/**
 * Warframe Clan Website Styles
 *
 * Dark-mode theme with greens, slate grays, and dark purples
 * Clean, sleek, minimalistic design
 */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
    /* Primary Colors - Dark Purple Scale */
    --purple-900: #1a0a2e;
    --purple-800: #2d1b4e;
    --purple-700: #3d2463;
    --purple-600: #4e2d78;
    --purple-500: #6b3fa0;
    --purple-400: #8b5fc4;
    --purple-300: #a87fd4;

    /* Secondary Colors - Slate Gray Scale */
    --slate-900: #0f1419;
    --slate-800: #1a1f26;
    --slate-700: #252b33;
    --slate-600: #353d47;
    --slate-500: #4a5568;
    --slate-400: #64748b;
    --slate-300: #94a3b8;
    --slate-200: #cbd5e1;
    --slate-100: #e2e8f0;

    /* Accent Colors - Green Scale */
    --green-900: #0a2618;
    --green-800: #134d2e;
    --green-700: #166534;
    --green-600: #1d7a42;
    --green-500: #22c55e;
    --green-400: #4ade80;
    --green-300: #86efac;

    /* Semantic Colors */
    --background-primary: var(--slate-900);
    --background-secondary: var(--slate-800);
    --background-tertiary: var(--slate-700);
    --background-elevated: var(--purple-900);

    --text-primary: var(--slate-100);
    --text-secondary: var(--slate-300);
    --text-muted: var(--slate-400);

    --accent-primary: var(--green-500);
    --accent-secondary: var(--purple-500);
    --accent-hover: var(--green-400);

    --border-color: var(--slate-600);
    --border-subtle: var(--slate-700);

    /* Status Colors */
    --success: var(--green-500);
    --warning: #eab308;
    --error: #ef4444;
    --info: var(--purple-400);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--purple-800) 0%, var(--slate-900) 100%);
    --gradient-accent: linear-gradient(135deg, var(--green-700) 0%, var(--green-500) 100%);
    --gradient-card: linear-gradient(180deg, var(--slate-800) 0%, var(--slate-900) 100%);
    --gradient-hero: linear-gradient(135deg, var(--purple-900) 0%, var(--slate-900) 50%, var(--green-900) 100%);
    --gradient-subtle: linear-gradient(180deg, rgba(107, 63, 160, 0.1) 0%, transparent 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
    --shadow-glow-green: 0 0 20px rgba(34, 197, 94, 0.3);
    --shadow-glow-purple: 0 0 20px rgba(107, 63, 160, 0.3);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --container-max: 1280px;
    --container-narrow: 800px;
    --nav-height: 64px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background: var(--background-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
}

/* ========================================
   Layout Components
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--spacing-16) 0;
}

.section--hero {
    padding: var(--spacing-20) 0;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.section--hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(107, 63, 160, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(34, 197, 94, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* ========================================
   Navigation
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(15, 20, 25, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.nav__logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-decoration: none;
}

.nav__logo-accent {
    color: var(--accent-primary);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
    list-style: none;
}

.nav__link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
    padding: var(--spacing-2) 0;
    position: relative;
}

.nav__link:hover,
.nav__link--active {
    color: var(--accent-primary);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 100%;
}

.nav__link--logout {
    color: var(--error);
}

.nav__link--logout:hover {
    color: #f87171;
}

.nav__link--logout::after {
    background: var(--error);
}

/* ========================================
   Mobile Navigation Toggle (Hamburger)
   ======================================== */

.nav__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-2);
    width: 44px;
    height: 44px;
    position: relative;
    z-index: 1002;
}

.nav__toggle-icon {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 24px;
    height: 24px;
    position: relative;
}

.nav__toggle-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    position: absolute;
    transition: all 0.3s cubic-bezier(0.68, -0.6, 0.32, 1.6);
}

.nav__toggle-line:nth-child(1) {
    top: 6px;
}

.nav__toggle-line:nth-child(2) {
    top: 11px;
}

.nav__toggle-line:nth-child(3) {
    top: 16px;
}

/* Animated state - transforms into X */
.nav__toggle--active .nav__toggle-line:nth-child(1) {
    top: 11px;
    transform: rotate(45deg);
    background: var(--accent-primary);
}

.nav__toggle--active .nav__toggle-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.nav__toggle--active .nav__toggle-line:nth-child(3) {
    top: 11px;
    transform: rotate(-45deg);
    background: var(--accent-primary);
}

/* ========================================
   Cards
   ======================================== */

.card {
    background: var(--gradient-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
}

.card--interactive:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow-green);
}

.card__header {
    margin-bottom: var(--spacing-4);
}

.card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2);
}

.card__subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.card__content {
    color: var(--text-secondary);
}

.card__footer {
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-subtle);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background: var(--gradient-accent);
    color: var(--slate-900);
    box-shadow: var(--shadow-md);
}

.btn--primary:hover:not(:disabled) {
    box-shadow: var(--shadow-glow-green);
    transform: translateY(-2px);
}

.btn--secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn--secondary:hover:not(:disabled) {
    background: rgba(34, 197, 94, 0.1);
}

.btn--ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn--ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: var(--background-tertiary);
}

.btn--lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn--sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

/* ========================================
   Forms
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-4) center;
    padding-right: var(--spacing-10);
}

/* Checkbox and Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    cursor: pointer;
}

.form-check-input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========================================
   Activity & Reward Cards
   ======================================== */

.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.activity-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.activity-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow-green);
    transform: translateY(-4px);
}

.activity-card__header {
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--gradient-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.activity-card__category {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-1);
}

.activity-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.activity-card__body {
    padding: var(--spacing-5);
}

.activity-card__description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-4);
}

.activity-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.activity-card__tag {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
    background: var(--background-tertiary);
    border-radius: var(--radius-full);
}

.activity-card__footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ========================================
   Progress Indicators
   ======================================== */

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--background-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar__fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-steps {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.progress-step {
    flex: 1;
    height: 4px;
    background: var(--background-tertiary);
    border-radius: var(--radius-full);
    position: relative;
}

.progress-step--completed {
    background: var(--accent-primary);
}

.progress-step--current {
    background: linear-gradient(90deg, var(--accent-primary) 50%, var(--background-tertiary) 50%);
}

/* ========================================
   Search & Filters
   ======================================== */

.search-bar {
    position: relative;
    max-width: 500px;
}

.search-bar__input {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-12) var(--spacing-4) var(--spacing-4);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-bar__input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.search-bar__btn {
    position: absolute;
    right: var(--spacing-2);
    top: 50%;
    transform: translateY(-50%);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--accent-primary);
    color: var(--slate-900);
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-bar__btn:hover {
    background: var(--accent-hover);
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.filter-chip {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.filter-chip--active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--slate-900);
}

/* ========================================
   Tables
   ======================================== */

.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}

.table th {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--background-secondary);
}

.table td {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.table tr:hover td {
    background: var(--background-secondary);
}

.table tr:last-child td {
    border-bottom: none;
}

/* ========================================
   Badges & Status
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.badge--success {
    background: rgba(34, 197, 94, 0.2);
    color: var(--green-400);
}

.badge--warning {
    background: rgba(234, 179, 8, 0.2);
    color: #fbbf24;
}

.badge--error {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.badge--info {
    background: rgba(107, 63, 160, 0.2);
    color: var(--purple-400);
}

.badge--neutral {
    background: var(--background-tertiary);
    color: var(--text-muted);
}

/* ========================================
   Modal
   ======================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-6);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay--active {
    opacity: 1;
    visibility: visible;
}

.modal {
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay--active .modal {
    transform: translateY(0);
}

.modal__header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.modal__close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.modal__close:hover {
    background: var(--background-tertiary);
    color: var(--text-primary);
}

.modal__body {
    padding: var(--spacing-6);
    overflow-y: auto;
    max-height: 60vh;
}

.modal__footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--background-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer__section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.footer__links {
    list-style: none;
}

.footer__link {
    display: block;
    padding: var(--spacing-1) 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--accent-primary);
}

.footer__bottom {
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.footer__copyright {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========================================
   Utility Classes
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-primary); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

.hidden { display: none; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    :root {
        --container-max: 100%;
    }

    .section {
        padding: var(--spacing-12) 0;
    }

    .section--hero {
        padding: var(--spacing-16) 0;
    }
}

@media (max-width: 768px) {
    /* Define mobile nav height for taller nav with search bar on second row */
    :root {
        --nav-height-mobile: 110px;
    }

    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }

    /* Full-screen overlay menu */
    .nav__menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        max-width: 100vw;
        max-height: 100vh;
        overflow-x: hidden;
        overflow-y: auto;
        background: rgba(15, 20, 25, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: var(--spacing-8);
        gap: var(--spacing-2);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.4s ease, visibility 0.4s ease;
        z-index: 1001;
        -webkit-overflow-scrolling: touch;
    }

    .nav__menu::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(ellipse at 50% 0%, rgba(107, 63, 160, 0.15) 0%, transparent 60%),
                    radial-gradient(ellipse at 50% 100%, rgba(34, 197, 94, 0.1) 0%, transparent 60%);
        pointer-events: none;
    }

    .nav__menu--open {
        opacity: 1;
        visibility: visible;
    }

    .nav__menu li {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.3s ease, transform 0.3s ease;
        width: 100%;
        text-align: center;
        max-width: 100%;
    }

    .nav__menu--open li {
        opacity: 1;
        transform: translateY(0);
    }

    /* Staggered animation delays for menu items */
    .nav__menu--open li:nth-child(1) { transition-delay: 0.1s; }
    .nav__menu--open li:nth-child(2) { transition-delay: 0.15s; }
    .nav__menu--open li:nth-child(3) { transition-delay: 0.2s; }
    .nav__menu--open li:nth-child(4) { transition-delay: 0.25s; }
    .nav__menu--open li:nth-child(5) { transition-delay: 0.3s; }
    .nav__menu--open li:nth-child(6) { transition-delay: 0.35s; }

    .nav__menu .nav__link {
        font-size: var(--font-size-2xl);
        font-weight: var(--font-weight-semibold);
        letter-spacing: 0.02em;
        text-transform: none;
        padding: var(--spacing-3) var(--spacing-4);
        position: relative;
        display: inline-block;
        max-width: 100%;
        word-wrap: break-word;
    }

    .nav__menu .nav__link::after {
        bottom: 0;
        height: 2px;
        background: var(--accent-primary);
    }

    .nav__menu .nav__link--active {
        color: var(--accent-primary);
    }

    .nav__toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .activity-grid {
        grid-template-columns: 1fr;
    }

    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }

    .btn--lg {
        width: 100%;
    }

    .modal {
        max-height: 100vh;
        border-radius: 0;
    }
}

/* ========================================
   Nav Search Component
   ======================================== */

.nav__search {
    flex: 1;
    max-width: 320px;
    margin: 0 var(--spacing-4);
}

.nav__search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.nav__search-wrapper:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.nav__search-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    outline: none;
    min-width: 0;
}

.nav__search-input::placeholder {
    color: var(--text-muted);
}

.nav__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.nav__search-btn:hover {
    color: var(--accent-primary);
}

/* Nav Search Dropdown */
.nav__search-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1001;
    display: none;
}

.nav__search-dropdown.active {
    display: block;
}

.nav__search-dropdown:empty {
    display: none;
}

.search-suggestion {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    cursor: pointer;
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.search-suggestion:last-child {
    border-bottom: none;
}

.search-suggestion:hover,
.search-suggestion.highlighted {
    background: var(--background-tertiary);
}

.search-suggestion__image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    background: var(--background-primary);
    flex-shrink: 0;
}

.search-suggestion__info {
    flex: 1;
    min-width: 0;
}

.search-suggestion__name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-suggestion__type {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: capitalize;
}

.search-suggestion__badge {
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: var(--purple-800);
    color: var(--purple-300);
}

.search-suggestion__badge--prime {
    background: var(--green-900);
    color: var(--green-400);
}

/* Loading state */
.search-suggestion--loading {
    justify-content: center;
    color: var(--text-muted);
    padding: var(--spacing-4);
}

/* No results */
.search-suggestion--empty {
    justify-content: center;
    color: var(--text-muted);
    padding: var(--spacing-4);
    cursor: default;
}

.search-suggestion--empty:hover {
    background: transparent;
}

/* View all results link */
.search-suggestion--action {
    justify-content: center;
    color: var(--accent-primary);
    font-weight: var(--font-weight-medium);
    border-top: 1px solid var(--border-color);
    border-bottom: none;
}

.search-suggestion--action:hover {
    background: var(--green-900);
}

/* Mobile adjustments for nav search */
@media (max-width: 768px) {
    /* Prevent horizontal overflow on mobile */
    html, body {
        overflow-x: hidden;
        max-width: 100vw;
    }

    /* Make nav taller to fit search on second row */
    .nav {
        height: auto;
        min-height: var(--nav-height);
        flex-wrap: wrap;
        padding-bottom: var(--spacing-3);
        overflow: visible;
    }

    .nav__container {
        flex-wrap: wrap;
        padding-top: var(--spacing-3);
        padding-bottom: 0;
        max-width: 100%;
        overflow: hidden;
    }

    /* Adjust main content padding for taller mobile nav */
    main {
        padding-top: var(--nav-height-mobile) !important;
        overflow-x: hidden;
    }

    /* Search bar on its own row */
    .nav__search {
        order: 3;
        flex: 0 0 100%;
        max-width: 100%;
        margin: var(--spacing-3) 0 0 0;
        padding: 0;
        box-sizing: border-box;
    }

    .nav__search-wrapper {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    .nav__search-input {
        font-size: var(--font-size-base);
        padding: var(--spacing-3) var(--spacing-4);
        max-width: 100%;
    }

    .nav__search-btn {
        padding: var(--spacing-3) var(--spacing-4);
        flex-shrink: 0;
    }

    .nav__search-dropdown {
        left: 0;
        right: 0;
        max-height: 60vh;
        max-width: 100vw;
        box-sizing: border-box;
    }

    /* Adjust hero/section padding to account for taller nav */
    .section--hero {
        padding-top: calc(var(--spacing-20) + var(--spacing-8));
    }

    .section:first-of-type:not(.section--hero) {
        padding-top: calc(var(--spacing-16) + var(--spacing-8));
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .nav__search {
        max-width: 200px;
    }
}

/* ========================================
   Item Detail Page
   ======================================== */

.item-page {
    padding-top: var(--spacing-4);
}

.item-page__back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-6);
    transition: color 0.2s;
}

.item-page__back:hover {
    color: var(--accent-primary);
}

/* Item Header */
.item-header {
    display: flex;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--background-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
}

.item-header__image-wrapper {
    flex-shrink: 0;
}

.item-header__image {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-lg);
    background: var(--background-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.item-header__image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.item-header__image.no-image {
    background: linear-gradient(135deg, var(--purple-800), var(--purple-900));
}

.item-header__info {
    flex: 1;
    min-width: 0;
}

.item-header__badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.item-header__name {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.item-header__description {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* Stats Grid */
.item-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.item-stats__card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    text-align: center;
}

.item-stats__card--highlight {
    border-color: var(--accent-primary);
    background: var(--green-900);
}

.item-stats__label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-1);
}

.item-stats__value {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

/* Tabs */
.item-tabs {
    display: flex;
    gap: var(--spacing-1);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-6);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.item-tabs__tab {
    padding: var(--spacing-3) var(--spacing-4);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

.item-tabs__tab:hover {
    color: var(--text-primary);
}

.item-tabs__tab--active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

/* Tab Content */
.item-content__panel {
    display: none;
}

.item-content__panel--active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Drops List */
.drops-list__loading,
.details-grid__loading,
.market-info__loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-8);
    color: var(--text-muted);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.drops-list__empty {
    text-align: center;
    padding: var(--spacing-8);
    color: var(--text-muted);
}

.drop-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-3);
    overflow: hidden;
}

.drop-card__location {
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--background-tertiary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.drop-card__items {
    padding: var(--spacing-2) var(--spacing-4);
}

.drop-card__item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
}

.drop-card__item:last-child {
    border-bottom: none;
}

.drop-card__item-name {
    color: var(--text-secondary);
}

.drop-card__item-chance {
    font-weight: var(--font-weight-medium);
    color: var(--accent-primary);
}

/* Abilities */
.abilities-list {
    display: grid;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

.ability-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
}

.ability-card__name {
    font-weight: var(--font-weight-semibold);
    color: var(--accent-primary);
    margin-bottom: var(--spacing-2);
}

.ability-card__desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Info Table */
.info-table {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.info-table__row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
}

.info-table__row:last-child {
    border-bottom: none;
}

.info-table__label {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.info-table__value {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

/* Market Card */
.market-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    text-align: center;
}

.market-card--empty {
    color: var(--text-muted);
}

.market-card__price {
    margin-bottom: var(--spacing-4);
}

.market-card__label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-2);
}

.market-card__value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--accent-primary);
}

.market-card__plat {
    font-size: var(--font-size-lg);
    opacity: 0.7;
}

/* Related Items */
.related-items {
    margin-top: var(--spacing-10);
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--border-color);
}

.related-items__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
}

.related-items__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-4);
}

.related-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.2s;
}

.related-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.related-card__image {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.related-card__name {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    text-align: center;
    line-height: 1.3;
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, var(--background-tertiary) 25%, var(--slate-600) 50%, var(--background-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Activity card as link */
.activity-card--link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.activity-card--link:hover {
    transform: translateY(-2px);
}

/* ========================================
   Sub-filter Panel (Archwing filters)
   ======================================== */

.sub-filter-panel {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    background: var(--background-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sub-filter-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
    white-space: nowrap;
}

.sub-filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.sub-filter-chip {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
    background: var(--background-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sub-filter-chip:hover {
    border-color: var(--purple-500);
    color: var(--purple-400);
}

.sub-filter-chip--active {
    background: var(--purple-800);
    border-color: var(--purple-500);
    color: var(--purple-300);
}

/* Multi-level sub-filter panels */
.sub-filter-level-2,
.sub-filter-level-3 {
    margin-top: var(--spacing-2);
    padding-left: var(--spacing-4);
    border-left: 2px solid var(--border-color);
}

.sub-filter-group--wrap {
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

/* Augment Warframe Search */
.augment-search-container {
    position: relative;
    max-width: 300px;
    display: inline-block;
}

.augment-search-input {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-1);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.augment-search-input:focus {
    outline: none;
    border-color: var(--purple-500);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

.augment-search-input::placeholder {
    color: var(--text-muted);
}

.augment-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    margin-top: var(--spacing-1);
    box-shadow: var(--shadow-lg);
}

.augment-search-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    cursor: pointer;
    transition: background 0.15s ease;
}

.augment-search-item:hover {
    background: var(--surface-3);
}

.augment-search-item img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.augment-search-item span {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.augment-search-no-results {
    padding: var(--spacing-3);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* Mobile adjustments for sub-filter */
@media (max-width: 640px) {
    .sub-filter-panel {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-3);
    }

    .sub-filter-group {
        width: 100%;
    }

    .sub-filter-chip {
        flex: 1;
        text-align: center;
        min-width: 70px;
    }
}

/* Mobile Responsive */
@media (max-width: 640px) {
    .item-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .item-header__badges {
        justify-content: center;
    }

    .item-header__name {
        font-size: var(--font-size-xl);
    }

    .item-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .item-tabs {
        gap: 0;
    }

    .item-tabs__tab {
        flex: 1;
        padding: var(--spacing-3) var(--spacing-2);
        font-size: var(--font-size-xs);
    }

    .related-items__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .related-card {
        padding: var(--spacing-3);
    }

    .related-card__image {
        width: 48px;
        height: 48px;
    }

    .related-card__name {
        font-size: var(--font-size-xs);
    }
}

/* ========================================
   Enhanced Mobile Responsive Styles
   ======================================== */

/* Tablet breakpoint (768px and below) */
@media (max-width: 768px) {
    /* Search bar - full width on tablet/mobile */
    .search-bar {
        max-width: 100%;
    }

    /* Filter group - better spacing */
    .filter-group {
        gap: var(--spacing-2);
        margin-bottom: var(--spacing-4);
    }

    /* Filter chips - larger touch targets */
    .filter-chip {
        padding: var(--spacing-3) var(--spacing-4);
        font-size: var(--font-size-sm);
    }

    /* Activity grid - 2 columns on tablet */
    .activity-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-4);
    }

    /* Card adjustments */
    .activity-card__header {
        padding: var(--spacing-3) var(--spacing-4);
    }

    .activity-card__body {
        padding: var(--spacing-4);
    }

    .activity-card__footer {
        padding: var(--spacing-3) var(--spacing-4);
        flex-wrap: wrap;
        gap: var(--spacing-2);
    }

    /* Disable hover transform on touch devices */
    .activity-card:hover {
        transform: none;
    }

    /* Sub-filter panels */
    .sub-filter-level-2,
    .sub-filter-level-3 {
        margin-left: 0;
        padding-left: var(--spacing-3);
        border-left-width: 2px;
    }
}

/* Mobile breakpoint (480px and below) */
@media (max-width: 480px) {
    /* Activity grid - single column on mobile */
    .activity-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    /* Filter chips - scrollable horizontal on very small screens */
    .filter-group {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding-bottom: var(--spacing-2);
        margin-bottom: var(--spacing-4);
    }

    .filter-group::-webkit-scrollbar {
        display: none;
    }

    .filter-chip {
        flex-shrink: 0;
        white-space: nowrap;
    }

    /* Sub-filter panel stacking */
    .sub-filter-panel {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-3);
        padding: var(--spacing-3);
    }

    .sub-filter-label {
        margin-bottom: var(--spacing-1);
    }

    .sub-filter-group {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2);
    }

    .sub-filter-chip {
        text-align: center;
        padding: var(--spacing-2) var(--spacing-2);
        font-size: var(--font-size-xs);
    }

    /* Level 2/3 sub-filters - full width grid */
    .sub-filter-level-2,
    .sub-filter-level-3 {
        margin-top: var(--spacing-3);
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--border-subtle);
        padding-top: var(--spacing-3);
    }

    /* Card footer - stack on small screens */
    .activity-card__footer {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .activity-card__footer .badge {
        align-self: flex-start;
    }

    .activity-card__footer .btn {
        width: 100%;
    }

    /* Augment search - full width */
    .augment-search-container {
        max-width: 100%;
        width: 100%;
    }

    .augment-search-input {
        width: 100%;
    }

    /* Page title sizing */
    h1 {
        font-size: var(--font-size-2xl);
    }

    h2 {
        font-size: var(--font-size-xl);
    }

    /* Container padding */
    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }

    /* Section spacing */
    .section {
        padding: var(--spacing-8) 0;
    }

    /* Hero section */
    .section--hero {
        padding: var(--spacing-12) 0;
    }

    /* Reduce card image size on mobile */
    .activity-card__body img {
        max-width: 60px;
        max-height: 60px;
    }

    /* Modal - full screen on mobile */
    .modal {
        margin: 0;
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
        height: 100vh;
    }

    .modal__close {
        top: var(--spacing-3);
        right: var(--spacing-3);
    }

    /* Search results dropdown */
    .augment-search-results {
        max-height: 250px;
    }
}

/* Extra small devices (360px and below) */
@media (max-width: 360px) {
    .filter-chip {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-xs);
    }

    .sub-filter-group {
        grid-template-columns: 1fr;
    }

    .activity-card__title {
        font-size: var(--font-size-base);
    }

    .activity-card__description {
        font-size: var(--font-size-xs);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Disable hover effects on touch devices */
    .activity-card:hover {
        transform: none;
        box-shadow: none;
    }

    .activity-card:active {
        border-color: var(--accent-primary);
        box-shadow: var(--shadow-glow-green);
    }

    /* Larger tap targets */
    .filter-chip,
    .sub-filter-chip {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .btn--sm {
        min-height: 44px;
        padding: var(--spacing-3) var(--spacing-4);
    }

    /* Remove focus ring on touch */
    .filter-chip:focus,
    .sub-filter-chip:focus,
    .btn:focus {
        outline: none;
    }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .activity-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section--hero {
        padding: var(--spacing-8) 0;
    }
}

/* Safe area insets for notched devices */
@supports (padding: max(0px)) {
    .container {
        padding-left: max(var(--spacing-4), env(safe-area-inset-left));
        padding-right: max(var(--spacing-4), env(safe-area-inset-right));
    }

    .nav {
        padding-left: max(var(--spacing-4), env(safe-area-inset-left));
        padding-right: max(var(--spacing-4), env(safe-area-inset-right));
    }

    .modal {
        padding-bottom: max(var(--spacing-4), env(safe-area-inset-bottom));
    }
}

/* ========================================
   Item Page - Crafting Components
   ======================================== */

.components-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

.build-summary {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--background-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
}

.build-summary__item {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.build-summary__label {
    color: var(--text-muted);
    margin-right: var(--spacing-1);
}

.component-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.component-card:hover {
    border-color: var(--border-color);
}

.component-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    cursor: default;
}

.component-card__info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.component-card__image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    background: var(--background-tertiary);
}

.component-card__details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.component-card__name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.component-card__count {
    font-size: var(--font-size-xs);
    color: var(--accent-primary);
    font-weight: var(--font-weight-semibold);
}

.component-card__ducats {
    font-size: var(--font-size-xs);
    color: var(--warning);
    margin-left: var(--spacing-2);
}

.component-card__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--background-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.component-card__toggle:hover {
    background: var(--background-primary);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.component-card__toggle svg {
    transition: transform var(--transition-fast);
}

.component-card__toggle--expanded svg {
    transform: rotate(180deg);
}

.component-card__content {
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-subtle);
    background: var(--background-primary);
    animation: slideDown 0.2s ease-out;
}

.component-drops__title {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-2);
}

.component-drops__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.component-drop {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--background-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

.component-drop__location {
    color: var(--text-secondary);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.component-drop__chance {
    color: var(--accent-primary);
    font-weight: var(--font-weight-medium);
    margin-left: var(--spacing-2);
    flex-shrink: 0;
}

.component-drop--more {
    color: var(--text-muted);
    font-style: italic;
    justify-content: center;
}

.component-resource {
    margin-top: var(--spacing-3);
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--border-subtle);
}

.component-resource__btn {
    width: 100%;
}

/* Crafting requirements section */
.component-crafting {
    margin-bottom: var(--spacing-3);
}

.component-crafting__title {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-2);
}

.component-crafting__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.component-crafting__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--background-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
}

.component-crafting__image {
    width: 28px;
    height: 28px;
    object-fit: contain;
    flex-shrink: 0;
}

.component-crafting__name {
    flex: 1;
    color: var(--accent-primary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.component-crafting__name:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

.component-crafting__count {
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
    flex-shrink: 0;
}

.component-crafting__summary {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--background-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Mobile adjustments for component cards */
@media (max-width: 480px) {
    .component-card__header {
        padding: var(--spacing-3);
    }

    .component-card__image {
        width: 32px;
        height: 32px;
    }

    .component-card__name {
        font-size: var(--font-size-xs);
    }

    .component-drop {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-1);
    }

    .component-drop__chance {
        margin-left: 0;
    }

    .build-summary {
        flex-direction: column;
        gap: var(--spacing-2);
    }
}

/* ========================================
   Weapon Hierarchy Page
   ======================================== */

.hierarchy-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: var(--background-secondary);
}

.hierarchy-table {
    min-width: 900px;
}

.hierarchy-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--slate-700);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    transition: color var(--transition-fast);
}

.hierarchy-table thead th:hover {
    color: var(--accent-primary);
}

.hierarchy-table tbody tr {
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition-fast);
}

.hierarchy-table tbody tr:hover td {
    background: rgba(107, 63, 160, 0.08);
}

.hierarchy-table td {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.hierarchy-col-rank {
    width: 48px;
    text-align: center;
}

.hierarchy-table td.hierarchy-col-rank {
    font-weight: var(--font-weight-semibold);
    color: var(--text-muted);
    text-align: center;
}

.hierarchy-col-tier {
    width: 56px;
    text-align: center;
}

.hierarchy-col-name {
    min-width: 180px;
}

.hierarchy-col-score {
    width: 72px;
}

.hierarchy-col-stat {
    width: 72px;
}

.hierarchy-weapon-name {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.hierarchy-weapon-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.hierarchy-weapon-label {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Sort arrow indicators */
.sort-arrow {
    font-size: var(--font-size-xs);
    opacity: 0;
    margin-left: 2px;
    transition: opacity var(--transition-fast);
}

.hierarchy-table thead th:hover .sort-arrow,
.sort-arrow--active {
    opacity: 1;
}

.sort-arrow--asc {
    display: inline-block;
    transform: rotate(180deg);
}

/* Tier badges */
.tier-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.03em;
    text-align: center;
}

.tier-badge--S {
    background: rgba(234, 179, 8, 0.25);
    color: #fbbf24;
    box-shadow: 0 0 8px rgba(234, 179, 8, 0.2);
}

.tier-badge--A-plus {
    background: rgba(168, 127, 212, 0.25);
    color: var(--purple-300);
}

.tier-badge--A {
    background: rgba(107, 63, 160, 0.25);
    color: var(--purple-400);
}

.tier-badge--A-minus {
    background: rgba(107, 63, 160, 0.18);
    color: var(--purple-400);
}

.tier-badge--B-plus {
    background: rgba(59, 130, 246, 0.25);
    color: #60a5fa;
}

.tier-badge--B {
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
}

.tier-badge--B-minus {
    background: rgba(59, 130, 246, 0.12);
    color: #93bbfd;
}

.tier-badge--C-plus {
    background: rgba(34, 197, 94, 0.2);
    color: var(--green-400);
}

.tier-badge--C {
    background: rgba(34, 197, 94, 0.14);
    color: var(--green-400);
}

.tier-badge--C-minus {
    background: rgba(34, 197, 94, 0.1);
    color: var(--green-300);
}

.tier-badge--D {
    background: rgba(148, 163, 184, 0.15);
    color: var(--slate-400);
}

.tier-badge--F {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

/* Score column styling */
.hierarchy-score {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

/* How rankings work - collapsible section */
.hierarchy-info {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    background: var(--background-secondary);
    overflow: hidden;
}

.hierarchy-info__toggle {
    padding: var(--spacing-4) var(--spacing-6);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    list-style: none;
    transition: color var(--transition-fast);
}

.hierarchy-info__toggle::-webkit-details-marker {
    display: none;
}

.hierarchy-info__toggle::before {
    content: '\25B6';
    display: inline-block;
    margin-right: var(--spacing-2);
    font-size: var(--font-size-xs);
    transition: transform var(--transition-fast);
}

.hierarchy-info[open] .hierarchy-info__toggle::before {
    transform: rotate(90deg);
}

.hierarchy-info__toggle:hover {
    color: var(--accent-primary);
}

.hierarchy-info__content {
    padding: 0 var(--spacing-6) var(--spacing-6);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.hierarchy-info__content ul {
    margin: var(--spacing-3) 0;
    padding-left: var(--spacing-6);
}

.hierarchy-info__content li {
    margin-bottom: var(--spacing-2);
}

/* Responsive: table scrolls on small screens */
@media (max-width: 768px) {
    .hierarchy-table-wrapper {
        margin-left: calc(-1 * var(--spacing-4));
        margin-right: calc(-1 * var(--spacing-4));
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .hierarchy-table td,
    .hierarchy-table thead th {
        padding: var(--spacing-2) var(--spacing-3);
    }
}