/* assets/css/style.css */
/* --- Base Styles & Variables --- */
:root {
    --bg-color: #0a0a0f;
    --bg-secondary: #12121a;
    --card-bg: rgba(255, 255, 255, 0.04);
    --card-bg-hover: rgba(255, 255, 255, 0.07);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-tertiary: #55556a;
    --accent-color: #daa520;
    --gradient-1: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
    --gradient-2: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
    --gradient-3: linear-gradient(135deg, #f43f5e 0%, #fb7185 100%);
    --gradient-4: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --title-gradient: linear-gradient(135deg, #a855f7 0%, #ec4899 50%, #f97316 100%);
    --glow-purple: rgba(124, 58, 237, 0.15);
    --glow-blue: rgba(14, 165, 233, 0.15);
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.4);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Ambient background glow */
body::before {
    content: '';
    position: fixed;
    top: -40%;
    left: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(ellipse, var(--glow-purple) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}
body::after {
    content: '';
    position: fixed;
    bottom: -40%;
    right: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(ellipse, var(--glow-blue) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* --- Animations --- */
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

/* --- Header / Hero --- */
header {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
    animation: fadeSlideIn 0.8s ease forwards;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: var(--spacing-xs);
    font-weight: 800;
    letter-spacing: -0.04em;
    background: var(--title-gradient);
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    animation: shimmer 8s linear infinite;
}

.hero-tagline {
    font-size: clamp(1rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    font-weight: 500;
    margin: 0 auto var(--spacing-sm);
    letter-spacing: -0.01em;
}

.subtitle {
    font-size: clamp(0.9rem, 1.5vw, 1.05rem);
    color: var(--text-tertiary);
    max-width: 560px;
    margin: 0 auto var(--spacing-md);
    font-weight: 400;
    line-height: 1.7;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-md) auto;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 100px;
    width: fit-content;
    backdrop-filter: blur(12px);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-divider {
    width: 1px;
    height: 28px;
    background: var(--card-border);
}

/* Hero Links */
.hero-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.hero-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.45rem 1rem;
    border-radius: 100px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.hero-link:hover {
    background: var(--card-bg-hover);
    border-color: var(--card-border-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-lg);
    animation: fadeSlideIn 0.6s ease 0.2s both;
}

.filter-btn {
    padding: 0.45rem 1.1rem;
    border: 1px solid var(--card-border);
    border-radius: 100px;
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.filter-btn.active {
    background: rgba(168, 85, 247, 0.15);
    border-color: rgba(168, 85, 247, 0.4);
    color: #c084fc;
}

.filter-btn i { font-size: 0.75rem; }

/* --- Bento Grid Layout --- */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: auto;
    gap: var(--spacing-md);
    animation: fadeSlideIn 0.6s ease 0.3s both;
}

/* --- Project Card --- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 220px;
    text-decoration: none;
    color: var(--text-primary);
    backdrop-filter: blur(8px);
    animation: fadeSlideIn 0.5s ease both;
}

/* Gradient top accent */
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--gradient-1);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.card:hover, .card:focus {
    transform: translateY(-4px);
    background: var(--card-bg-hover);
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-lg);
    outline: none;
}
.card:hover::before, .card:focus::before { opacity: 1; }

.card-gradient-1::before { background: var(--gradient-1); }
.card-gradient-2::before { background: var(--gradient-2); }
.card-gradient-3::before { background: var(--gradient-3); }
.card-gradient-4::before { background: var(--gradient-4); }

/* Size classes */
.epic { grid-column: span 6; grid-row: span 2; min-height: 320px; }
.feature { grid-column: span 4; }
.mini { grid-column: span 3; }

/* Card thumbnail */
.card-thumbnail {
    margin: calc(-1 * var(--spacing-md));
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}
.card-thumbnail picture {
    display: block;
    line-height: 0;
}
.card-thumbnail img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

/* Card content */
.card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-xs);
}

.card-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }

.card-tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 100px;
    background: rgba(255,255,255,0.06);
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* Status pills */
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.2rem 0.65rem;
    font-size: 0.68rem;
    font-weight: 700;
    border-radius: 100px;
    white-space: nowrap;
    flex-shrink: 0;
}
.status-pill i { font-size: 0.6rem; }

.status-released {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}
.status-building {
    background: rgba(14, 165, 233, 0.15);
    color: #38bdf8;
}

.card-title {
    font-size: clamp(1.15rem, 1.8vw, 1.5rem);
    font-weight: 700;
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--text-primary);
    line-height: 1.25;
}

.epic .card-title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    background: var(--title-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: clamp(0.82rem, 0.9vw, 0.92rem);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.epic .card-description {
    -webkit-line-clamp: 4;
    font-size: clamp(0.9rem, 1vw, 1rem);
}

/* Card footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255,255,255,0.04);
}

.card-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
    background: var(--title-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}
.card-link i { margin-left: 0.5rem; color: var(--text-secondary); }

.card-meta {
    display: flex;
    align-items: center;
    color: var(--text-tertiary);
    font-size: 1rem;
}

/* --- Footer --- */
footer {
    margin-top: var(--spacing-xl);
    text-align: center;
    padding: var(--spacing-lg) 0 var(--spacing-md);
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: 0.85rem;
    border-top: 1px solid var(--card-border);
}

/* --- Empty State --- */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
}
.empty-state i { font-size: 3rem; margin-bottom: var(--spacing-md); opacity: 0.3; }
.empty-state h3 { margin-bottom: var(--spacing-sm); font-size: 1.5rem; color: var(--text-primary); }

/* --- Project Detail Page --- */
.container-narrow { max-width: 900px; }

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--card-border);
}

.site-logo {
    display: flex; align-items: center; text-decoration: none;
}
.site-logo i { font-size: 1.5rem; margin-right: var(--spacing-sm); color: var(--text-primary); }

.back-link {
    display: inline-flex; align-items: center;
    color: var(--text-primary); text-decoration: none;
    transition: var(--transition); font-weight: 500;
    padding: 0.5rem 1rem; border-radius: 100px;
    background: var(--card-bg); border: 1px solid var(--card-border);
}
.back-link:hover { background: var(--card-bg-hover); border-color: var(--card-border-hover); }
.back-link i { margin-right: var(--spacing-sm); }

.project-header { margin-bottom: var(--spacing-lg); padding-bottom: var(--spacing-lg); border-bottom: 1px solid var(--card-border); }

.project-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-sm);
    background: var(--title-gradient); -webkit-background-clip: text; background-clip: text; color: transparent;
    font-weight: 800; line-height: 1.2;
}

.project-meta { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }

.project-short-description { font-size: 1.1rem; max-width: 800px; margin-bottom: var(--spacing-md); color: var(--text-secondary); }

.project-links { display: flex; flex-wrap: wrap; gap: var(--spacing-md); margin-bottom: var(--spacing-md); }

.project-link {
    display: inline-flex; align-items: center; padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius-sm); text-decoration: none;
    font-weight: 600; transition: var(--transition); border: none; cursor: pointer;
}
.github-link { background: rgba(255,255,255,0.08); color: white; border: 1px solid var(--card-border); }
.github-link:hover { background: rgba(255,255,255,0.12); border-color: var(--card-border-hover); }
.live-link { background: var(--gradient-1); color: white; }
.live-link:hover { opacity: 0.9; transform: translateY(-2px); }
.project-link i { margin-right: 0.5rem; }

.project-section {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--border-radius); padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg); backdrop-filter: blur(8px); overflow: hidden;
}

.section-title {
    font-size: 1.3rem; font-weight: 700; margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm); border-bottom: 1px solid var(--card-border);
}

.demo-section { min-height: 400px; display: flex; align-items: center; justify-content: center; }
.demo-container { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.demo-placeholder { text-align: center; color: var(--text-secondary); padding: var(--spacing-lg); }
.demo-placeholder i { font-size: 3rem; margin-bottom: var(--spacing-sm); opacity: 0.3; }
.demo-iframe { width: 100%; height: 500px; border: none; border-radius: var(--border-radius-sm); }

.video-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: var(--border-radius-sm); }
.video-container iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }

.content-text { color: var(--text-secondary); line-height: 1.8; }
.content-text p, .content-text ul, .content-text ol { margin-bottom: var(--spacing-md); }
.content-text ul, .content-text ol { padding-left: var(--spacing-lg); }
.content-text li { margin-bottom: var(--spacing-xs); }
.content-text a { color: #a855f7; text-decoration: none; font-weight: 500; }
.content-text a:hover { text-decoration: underline; }
.content-text code {
    background: rgba(168, 85, 247, 0.1); padding: 0.2em 0.4em;
    border-radius: 4px; font-family: 'Courier New', monospace; font-size: 0.9em;
    color: #c084fc;
}
.content-text pre {
    background: rgba(0,0,0,0.4); padding: var(--spacing-md);
    border-radius: var(--border-radius-sm); overflow-x: auto; margin-bottom: var(--spacing-md);
    border: 1px solid var(--card-border);
}
.content-text pre code { background: transparent; padding: 0; color: var(--text-secondary); }

.repo-info { display: flex; flex-wrap: wrap; gap: var(--spacing-md); margin-bottom: var(--spacing-md); padding-bottom: var(--spacing-md); border-bottom: 1px solid var(--card-border); }
.repo-stat { display: flex; flex-direction: column; align-items: center; min-width: 80px; }
.repo-stat-number { font-size: 1.5rem; font-weight: 700; }
.repo-stat-label { font-size: 0.8rem; color: var(--text-secondary); margin-top: 0.25rem; }
.code-preview { background: rgba(0,0,0,0.4); border-radius: var(--border-radius-sm); padding: var(--spacing-md); overflow-x: auto; margin-bottom: var(--spacing-md); border: 1px solid var(--card-border); }
.code-preview pre { font-family: 'Fira Code', 'Consolas', monospace; line-height: 1.5; color: var(--text-secondary); white-space: pre; }

.not-found-section { text-align: center; }
.not-found-section .section-title { text-align: center; border-bottom: none; }
.not-found-section p { margin-bottom: var(--spacing-md); }

/* --- Accessibility --- */
.accessibility-info {
    position: fixed; bottom: var(--spacing-md); right: var(--spacing-md);
    background: var(--card-bg); border: 1px solid var(--card-border);
    color: var(--text-secondary); padding: 0.5rem 1rem; border-radius: 100px;
    font-size: 0.8rem; display: flex; align-items: center; cursor: pointer;
    box-shadow: var(--shadow); transition: var(--transition); z-index: 100;
    font-weight: 600; backdrop-filter: blur(12px);
}
.accessibility-info:hover { transform: translateY(-3px); background: var(--card-bg-hover); border-color: var(--card-border-hover); }
.accessibility-info i { margin-right: 0.5rem; }

/* --- Responsive --- */
@media (max-width: 1200px) {
    .epic { grid-column: span 8; }
    .feature { grid-column: span 6; }
    .mini { grid-column: span 4; }
}

@media (max-width: 900px) {
    .epic { grid-column: span 12; }
    .feature { grid-column: span 6; }
    .mini { grid-column: span 6; }
    .hero-stats { gap: var(--spacing-sm); }
}

@media (max-width: 768px) {
    .bento-grid { grid-template-columns: 1fr; gap: var(--spacing-sm); }
    .epic, .feature, .mini { grid-column: 1 / -1; grid-row: auto; }
    .card-description { -webkit-line-clamp: 4; }
    .filter-bar { flex-wrap: wrap; }
    .hero-stats { flex-wrap: wrap; border-radius: var(--border-radius); }
    .project-links { flex-direction: column; gap: var(--spacing-sm); align-items: stretch; }
    .project-link { justify-content: center; }
    .project-title { font-size: clamp(1.8rem, 6vw, 2.5rem); }
}

@media (max-width: 600px) {
    body { padding: 0; }
    .container { padding: 0 var(--spacing-sm); }
}

/* --- Accessibility: Focus --- */
a:focus, button:focus, [tabindex="0"]:focus, .card:focus {
    outline: 2px solid #a855f7;
    outline-offset: 3px;
    border-radius: 4px;
}

/* --- High Contrast --- */
@media (forced-colors: active) {
    .card::before { background: CanvasText; }
    .card, .empty-state, .project-section, footer { border: 1px solid CanvasText; }
    h1, .epic .card-title, .card-link, .project-title { color: CanvasText; background: none; }
    .project-link { border: 1px solid ButtonText; background-color: ButtonFace; color: ButtonText; }
    .back-link { border: 1px solid LinkText; background: none; }
    .content-text a { color: LinkText; }
    .hero-stats { border: 1px solid CanvasText; }
    .filter-btn { border: 1px solid ButtonText; }
    .status-pill { border: 1px solid CanvasText; }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .card:hover, .card:focus, .hero-link:hover, .accessibility-info:hover { transform: none; }
    h1 { animation: none; }
}