/* ===== CSS Variables ===== */
:root {
    --color-bg: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-text-dim: #71717a;
    --color-primary: #8b5cf6;
    --color-primary-light: #a78bfa;
    --color-primary-dark: #7c3aed;
    --color-accent: #06b6d4;
    --color-accent-secondary: #22d3ee;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    --gradient-card: linear-gradient(180deg, rgba(139, 92, 246, 0.05), transparent);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--color-primary);
    color: white;
}

/* ===== Ambient Background ===== */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
    opacity: 0.2;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.05);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: var(--transition-fast);
}

.logo:hover {
    color: var(--color-primary-light);
}

.logo-bracket {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-base);
    border-radius: 2px;
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-links a:hover::after {
    width: 100%;
}

.github-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.github-btn:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 120px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--color-primary-light);
    margin-bottom: 24px;
}

.pulse {
    width: 8px;
    height: 8px;
    background: #22c55e;
    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(1.2);
    }
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    font-weight: 400;
}

.typed-text {
    color: var(--color-accent);
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-dim);
    max-width: 500px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
    background: rgba(139, 92, 246, 0.05);
}

/* ===== Code Window ===== */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.code-window {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    width: 100%;
    max-width: 480px;
    animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.window-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.window-dots {
    display: flex;
    gap: 8px;
}

.window-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.window-dots span:nth-child(1) {
    background: #ff5f57;
}

.window-dots span:nth-child(2) {
    background: #febc2e;
}

.window-dots span:nth-child(3) {
    background: #28c840;
}

.window-title {
    color: var(--color-text-dim);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.code-content {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-content code {
    display: block;
}

.code-keyword {
    color: #c678dd;
}

.code-variable {
    color: #e5c07b;
}

.code-property {
    color: #e06c75;
}

.code-string {
    color: #98c379;
}

.code-function {
    color: #61afef;
}

/* ===== Section Styles ===== */
.section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--color-primary-light);
    font-weight: 500;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ===== About Section ===== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.about-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-base);
}

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

.about-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--color-primary-light);
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.about-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Projects Section ===== */
.projects-cta-centered {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.projects-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.store-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.btn-store {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition-base);
}

.btn-store:hover {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.store-label {
    font-size: 0.7rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.store-name {
    font-size: 1rem;
    font-weight: 600;
}

/* ===== Contact Section ===== */
.contact {
    background: var(--color-bg-secondary);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-base);
}

.contact-link:hover {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
    transform: translateY(-2px);
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-bg-tertiary);
    color: var(--color-text);
    padding: 16px 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-primary);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    text-align: center;
}

.footer-content p {
    color: var(--color-text-dim);
    font-size: 0.9rem;
}

.footer-tagline {
    margin-top: 8px;
    color: var(--color-text-muted);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto 32px;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 2.75rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section {
        padding: 80px 0;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

    .contact-links {
        flex-direction: column;
    }

    .store-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-store {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 16px 60px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .code-window {
        font-size: 0.8rem;
    }

    .about-card {
        padding: 24px;
    }
}