/* ============================================
   RzGans Project Hub — Premium Design System
   ============================================ */

/* === CSS Custom Properties === */
:root {
    /* Colors — Dark Space Theme */
    --bg-primary: #06080f;
    --bg-secondary: #0c1020;
    --bg-card: rgba(14, 18, 36, 0.6);
    --bg-card-hover: rgba(20, 26, 50, 0.8);

    /* Accent Colors */
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-ai: linear-gradient(135deg, #06b6d4, #3b82f6);
    --gradient-gacha: linear-gradient(135deg, #ec4899, #f43f5e);
    --gradient-portfolio: linear-gradient(135deg, #10b981, #06b6d4);
    --gradient-main: linear-gradient(135deg, #8b5cf6, #ec4899);
    --gradient-text: linear-gradient(135deg, #60a5fa, #c084fc, #f472b6);

    /* Text Colors */
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Borders */
    --border-color: rgba(148, 163, 184, 0.08);
    --border-hover: rgba(148, 163, 184, 0.15);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

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

/* === Background Effects === */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 0;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
    animation: glowFloat 15s ease-in-out infinite;
}

.glow-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-blue);
    top: -10%;
    right: -5%;
    animation-delay: 0s;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-purple);
    bottom: 10%;
    left: -5%;
    animation-delay: -5s;
}

.glow-3 {
    width: 350px;
    height: 350px;
    background: var(--accent-pink);
    top: 50%;
    right: 20%;
    animation-delay: -10s;
    opacity: 0.08;
}

@keyframes glowFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.1);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    75% {
        transform: translate(15px, 15px) scale(1.05);
    }
}

/* Particle Canvas */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* === Main Content === */
.main-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* === Hero Header === */
.hero-header {
    text-align: center;
    padding: var(--space-4xl) 0 var(--space-3xl);
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-blue);
    margin-bottom: var(--space-xl);
    letter-spacing: 0.5px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-emerald);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
    color: var(--text-primary);
}

.title-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 520px;
    margin: 0 auto var(--space-2xl);
}

.hero-stats-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.stat-chip {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

.stat-chip i {
    font-size: 0.75rem;
    color: var(--accent-blue);
}

.stat-chip strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* === Projects Section === */
.projects-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding-bottom: var(--space-4xl);
}

/* === Project Card === */
.project-card {
    position: relative;
    display: block;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-spring), box-shadow var(--transition-base);
    animation: fadeInUp 0.8s ease-out backwards;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }

.project-card:hover {
    transform: translateY(-4px) scale(1.01);
}

/* Card Glow */
.card-glow {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 0;
}

.project-card:hover .card-glow {
    opacity: 1;
}

/* Card Border */
.card-border {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-base);
    z-index: 2;
    pointer-events: none;
}

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

/* Card Content */
.card-content {
    position: relative;
    z-index: 1;
    padding: var(--space-xl) var(--space-2xl);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: inherit;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    transition: background var(--transition-base);
}

.project-card:hover .card-content {
    background: var(--bg-card-hover);
}

/* Card Header */
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.card-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.15;
    border-radius: inherit;
}

.icon-portfolio {
    background: var(--gradient-portfolio);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.icon-main {
    background: var(--gradient-main);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.icon-ai {
    background: var(--gradient-ai);
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.3);
}

.icon-gacha {
    background: var(--gradient-gacha);
    box-shadow: 0 4px 20px rgba(236, 72, 153, 0.3);
}

.card-badges {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.badge-featured {
    background: rgba(16, 185, 129, 0.12);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-featured i {
    font-size: 0.6rem;
}

.badge-primary {
    background: rgba(139, 92, 246, 0.12);
    color: var(--accent-purple);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.badge-ai {
    background: rgba(6, 182, 212, 0.12);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.badge-gacha {
    background: rgba(236, 72, 153, 0.12);
    color: var(--accent-pink);
    border: 1px solid rgba(236, 72, 153, 0.2);
}

.badge-live {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.live-dot {
    width: 5px;
    height: 5px;
    background: var(--accent-emerald);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

/* Card Body */
.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    transition: color var(--transition-fast);
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.tech-tag {
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.3px;
}

/* Card Footer */
.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.card-link-text {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.card-arrow {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: transform var(--transition-spring), color var(--transition-fast);
}

.project-card:hover .card-arrow {
    transform: translateX(6px);
}

/* Card Shine Effect */
.card-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.03),
        transparent
    );
    z-index: 3;
    pointer-events: none;
    transition: left 0.6s ease;
}

.project-card:hover .card-shine {
    left: 100%;
}

/* === Card Specific Hover Colors === */
.card-portfolio:hover .card-glow {
    box-shadow: inset 0 0 80px rgba(16, 185, 129, 0.05), 0 0 60px rgba(16, 185, 129, 0.08);
}
.card-portfolio:hover .card-border {
    border-color: rgba(16, 185, 129, 0.2);
}
.card-portfolio:hover .card-title {
    color: #6ee7b7;
}
.card-portfolio:hover .card-link-text {
    color: var(--accent-emerald);
}
.card-portfolio:hover .card-arrow {
    color: var(--accent-emerald);
}

.card-main:hover .card-glow {
    box-shadow: inset 0 0 80px rgba(139, 92, 246, 0.05), 0 0 60px rgba(139, 92, 246, 0.08);
}
.card-main:hover .card-border {
    border-color: rgba(139, 92, 246, 0.2);
}
.card-main:hover .card-title {
    color: #c4b5fd;
}
.card-main:hover .card-link-text {
    color: var(--accent-purple);
}
.card-main:hover .card-arrow {
    color: var(--accent-purple);
}

.card-ai:hover .card-glow {
    box-shadow: inset 0 0 80px rgba(6, 182, 212, 0.05), 0 0 60px rgba(6, 182, 212, 0.08);
}
.card-ai:hover .card-border {
    border-color: rgba(6, 182, 212, 0.2);
}
.card-ai:hover .card-title {
    color: #67e8f9;
}
.card-ai:hover .card-link-text {
    color: var(--accent-cyan);
}
.card-ai:hover .card-arrow {
    color: var(--accent-cyan);
}

.card-gacha:hover .card-glow {
    box-shadow: inset 0 0 80px rgba(236, 72, 153, 0.05), 0 0 60px rgba(236, 72, 153, 0.08);
}
.card-gacha:hover .card-border {
    border-color: rgba(236, 72, 153, 0.2);
}
.card-gacha:hover .card-title {
    color: #f9a8d4;
}
.card-gacha:hover .card-link-text {
    color: var(--accent-pink);
}
.card-gacha:hover .card-arrow {
    color: var(--accent-pink);
}

/* === Featured Card Extra Styling === */
.card-featured .card-content {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.03), rgba(6, 182, 212, 0.03));
}

.card-featured .card-border {
    border-color: rgba(16, 185, 129, 0.12);
}

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

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-bracket {
    color: var(--accent-blue);
    font-weight: 800;
}

.footer-socials {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.footer-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .main-content {
        padding: var(--space-xl) var(--space-md);
    }

    .hero-header {
        padding: var(--space-2xl) 0 var(--space-xl);
    }

    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-stats-bar {
        gap: var(--space-sm);
    }

    .stat-chip {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .card-content {
        padding: var(--space-lg);
    }

    .card-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--space-md) var(--space-sm);
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-badge {
        font-size: 0.7rem;
        padding: 5px 12px;
    }

    .hero-stats-bar {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .stat-chip {
        width: 100%;
        justify-content: center;
    }

    .card-content {
        padding: var(--space-md);
        gap: var(--space-md);
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .card-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .card-title {
        font-size: 1.15rem;
    }

    .card-description {
        font-size: 0.85rem;
    }

    .footer-socials {
        gap: var(--space-sm);
    }

    .social-link {
        width: 36px;
        height: 36px;
        font-size: 0.8rem;
    }
}

/* === Mouse Follower === */
.mouse-follower {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.06), transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* === Selection === */
::selection {
    background: rgba(59, 130, 246, 0.3);
    color: #fff;
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.25);
}