/* ========================================
   CSS Variables & Design Tokens
   ======================================== */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0f1115;
    --bg-secondary: #1a1d24;
    --bg-tertiary: #252a33;
    --bg-card: #1e2229;
    --bg-card-hover: #262c36;

    --text-primary: #ffffff;
    --text-secondary: #a0a6b4;
    --text-muted: #6b7280;

    --accent-primary: #ff4655;
    --accent-secondary: #00d4aa;
    --accent-tertiary: #5865f2;

    --border-color: #2d333d;
    --border-light: #3d444f;

    /* Valorant-inspired crosshair colors */
    --ch-green: #00ff00;
    --ch-cyan: #00ffff;
    --ch-yellow: #ffff00;
    --ch-pink: #ff00ff;
    --ch-red: #ff0000;
    --ch-white: #ffffff;

    /* Spacing Scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

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

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: var(--space-md);
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select {
    font-family: inherit;
    font-size: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.main {
    min-height: calc(100vh - 200px);
}

/* ========================================
   Header
   ======================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 17, 21, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--text-lg);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

.nav {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--space-sm) 0;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 1px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: var(--space-2xl) 0 var(--space-xl);
    text-align: center;
}

.hero h1 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-base);
    max-width: 500px;
    margin: 0 auto;
}

/* Category Hero */
.category-hero {
    text-align: left;
}

.category-hero h1 {
    margin-top: var(--space-sm);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

/* ========================================
   Filters Section
   ======================================== */
.filters-section {
    padding-bottom: var(--space-lg);
}

.search-bar {
    position: relative;
    margin-bottom: var(--space-md);
}

.search-bar input {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) var(--space-2xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast);
}

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

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

.filter-tabs {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
    scrollbar-width: none;
}

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

.filter-tab {
    flex-shrink: 0;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-tab:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.advanced-filters-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    padding: var(--space-sm) 0;
    transition: color var(--transition-fast);
}

.advanced-filters-toggle:hover {
    color: var(--text-primary);
}

.advanced-filters-toggle .chevron {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.advanced-filters-toggle.open .chevron {
    transform: rotate(180deg);
}

.advanced-filters {
    display: none;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin-top: var(--space-md);
}

.advanced-filters.open {
    display: block;
}

.filter-group {
    margin-bottom: var(--space-md);
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.filter-chip {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

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

.filter-chip.active {
    background: var(--accent-tertiary);
    border-color: var(--accent-tertiary);
    color: white;
}

.color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
}

/* ========================================
   Crosshairs Grid
   ======================================== */
.crosshairs-section {
    padding-bottom: var(--space-3xl);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

#results-count {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.sort-dropdown select {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-sm);
}

/* ========================================
   Crosshairs Grid - Strict Auto-Layout
   ======================================== */
.crosshairs-grid {
    --grid-gap: var(--space-xl);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-gap);
}

/* ========================================
   Crosshair Card - Clean Design System
   ======================================== */
.crosshair-card {
    --card-padding: var(--space-xl);
    --card-gap: var(--space-md);
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.crosshair-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Card Preview */
.card-preview {
    position: relative;
    aspect-ratio: 16 / 9;
    min-height: 160px;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-preview canvas {
    max-width: 100%;
    max-height: 100%;
}

/* Category Badge */
.card-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-category.pro { color: #ffd700; }
.card-category.streamer { color: #a855f7; }
.card-category.ranked-tryhard { color: #ef4444; }
.card-category.minimal { color: #94a3b8; }
.card-category.fun-troll { color: #22c55e; }
.card-category.beginner-friendly { color: #3b82f6; }

/* Card Content */
.card-content {
    display: flex;
    flex-direction: column;
    gap: var(--card-gap);
    padding: var(--card-padding);
    flex: 1;
}

/* Card Header */
.card-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

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

/* Card Tags */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.card-tag {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Card Code Block */
.card-code {
    display: flex;
    gap: var(--space-sm);
    align-items: stretch;
}

.code-display {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: flex;
    align-items: center;
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--accent-primary);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.copy-btn:hover {
    background: #e63e4c;
    transform: translateY(-1px);
}

.copy-btn svg {
    width: 16px;
    height: 16px;
}

/* Card Actions */
.card-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--space-sm);
    margin-top: auto;
    padding-top: var(--card-gap);
    border-top: 1px solid var(--border-color);
}

.card-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.card-action-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.card-action-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Pro Player Button */
.card-action-btn.card-action-pro {
    background: rgba(255, 70, 85, 0.08);
    border-color: rgba(255, 70, 85, 0.2);
    color: var(--accent-primary);
}

.card-action-btn.card-action-pro:hover {
    background: rgba(255, 70, 85, 0.15);
    border-color: var(--accent-primary);
}

/* Favorite Button */
.card-action-btn.card-action-favorite {
    background: rgba(255, 70, 85, 0.06);
    border-color: rgba(255, 70, 85, 0.15);
    color: var(--accent-primary);
}

.card-action-btn.card-action-favorite:hover {
    background: rgba(255, 70, 85, 0.12);
    border-color: var(--accent-primary);
}

.card-action-btn.card-action-favorite svg {
    transition: transform var(--transition-fast);
}

.card-action-btn.card-action-favorite:hover svg {
    transform: scale(1.15);
}

/* ========================================
   App Promo Modal
   ======================================== */
.app-promo-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.app-promo-modal.show {
    opacity: 1;
    visibility: visible;
}

.app-promo-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
}

.app-promo-content {
    position: relative;
    width: 100%;
    max-width: 380px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.app-promo-modal.show .app-promo-content {
    transform: scale(1) translateY(0);
}

.app-promo-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.app-promo-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.app-promo-close svg {
    width: 18px;
    height: 18px;
}

.app-promo-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255, 70, 85, 0.2), rgba(255, 70, 85, 0.1));
    border-radius: 50%;
    color: var(--accent-primary);
}

.app-promo-icon svg {
    width: 32px;
    height: 32px;
}

.app-promo-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.app-promo-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.app-promo-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--space-xl);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.app-promo-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: var(--text-sm);
    color: var(--text-primary);
}

.app-promo-features li:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.app-promo-features .feature-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 170, 0.15);
    color: var(--accent-secondary);
    border-radius: 50%;
    font-size: 10px;
    font-weight: 700;
    flex-shrink: 0;
}

.app-promo-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, #000000, #1a1a1a);
    color: white;
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid #333;
}

.app-promo-btn:hover {
    background: linear-gradient(135deg, #1a1a1a, #333);
    transform: translateY(-1px);
}

.app-promo-btn svg {
    width: 20px;
    height: 20px;
}

.app-promo-dismiss {
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    color: var(--text-muted);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.app-promo-dismiss:hover {
    color: var(--text-secondary);
}

/* Load More Button */
.load-more-btn {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: var(--space-xl) auto 0;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.load-more-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand .logo-icon,
.footer-brand .logo-text {
    display: inline-block;
    vertical-align: middle;
}

.footer-brand .logo-icon {
    margin-right: var(--space-sm);
}

.footer-desc {
    margin-top: var(--space-sm);
    color: var(--text-muted);
    font-size: var(--text-sm);
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.footer-col h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: var(--text-xs);
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--space-md) var(--space-lg);
    background: var(--accent-secondary);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-sm);
    opacity: 0;
    transition: all var(--transition-base);
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-md);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
}

.empty-state h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    color: var(--text-secondary);
}

/* ========================================
   Loading State
   ======================================== */
.loading {
    display: flex;
    justify-content: center;
    padding: var(--space-2xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========================================
   Responsive Design - Strict Grid System
   ======================================== */
@media (min-width: 640px) {
    .hero h1 {
        font-size: var(--text-3xl);
    }

    .crosshairs-grid {
        --grid-gap: var(--space-xl);
        grid-template-columns: repeat(2, 1fr);
    }

    .crosshair-card {
        --card-padding: var(--space-xl);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    :root {
        --container-padding: var(--space-xl);
    }

    .crosshairs-grid {
        --grid-gap: var(--space-2xl);
        grid-template-columns: repeat(3, 1fr);
    }

    .crosshair-card {
        --card-padding: var(--space-xl);
        --card-gap: var(--space-lg);
    }

    .footer-content {
        grid-template-columns: 1.5fr 1fr;
    }

    .footer-links {
        justify-self: end;
    }
}

@media (min-width: 1280px) {
    .crosshairs-grid {
        --grid-gap: var(--space-3xl);
    }

    .crosshair-card {
        --card-padding: var(--space-2xl);
    }
}

@media (max-width: 639px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        padding: var(--space-md);
    }

    .nav.open {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }
}