/* ===== CSS Variables ===== */
:root {
    --color-bg: #0a0a0b;
    --color-bg-secondary: #111113;
    --color-bg-tertiary: #1a1a1d;
    --color-border: #2a2a2e;
    --color-border-light: #3a3a3e;

    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-text-dark: #71717a;

    --color-primary: #06b6d4;
    --color-primary-light: #22d3ee;
    --color-secondary: #8b5cf6;
    --color-accent: #f59e0b;

    --font-display: 'Syne', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    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;
}

/* ===== Noise Overlay ===== */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.25rem 0;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-normal);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem 2rem 4rem;
    align-items: center;
    position: relative;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--color-primary);
    top: -10%;
    right: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--color-secondary);
    bottom: 10%;
    left: -5%;
    animation-delay: -2s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: var(--color-accent);
    top: 50%;
    left: 50%;
    animation-delay: -4s;
}

.orb-4 {
    width: 400px;
    height: 400px;
    background: var(--color-primary);
    top: 20%;
    left: -10%;
}

.orb-5 {
    width: 300px;
    height: 300px;
    background: var(--color-secondary);
    bottom: 0;
    right: -5%;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    width: fit-content;
}

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

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
    opacity: 0;
    animation: slideUp 0.6s ease forwards;
}

.title-line:nth-child(1) { animation-delay: 0.1s; }
.title-line:nth-child(2) { animation-delay: 0.2s; }
.title-line:nth-child(3) { animation-delay: 0.3s; }

.title-highlight {
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    background-image: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 450px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 1.8rem;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.2);
}

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

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

.hero-stats {
    display: flex;
    gap: 3rem;
    padding-top: 1rem;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

.phone-mockup {
    position: relative;
    animation: phoneFloat 6s ease-in-out infinite;
}

@keyframes phoneFloat {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

.phone-frame {
    width: 260px;
    height: 520px;
    background: var(--color-bg-tertiary);
    border: 3px solid var(--color-border);
    border-radius: 40px;
    padding: 12px;
    position: relative;
    box-shadow:
        0 50px 100px rgba(0, 0, 0, 0.5),
        inset 0 0 0 2px var(--color-border-light);
}

.phone-notch {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: var(--color-bg);
    border-radius: 20px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #0f172a 0%, #1e1b4b 100%);
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.screen-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.app-icon-wrapper {
    width: 80px;
    height: 80px;
}

.app-icon {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 10px 30px rgba(6, 182, 212, 0.4));
}

.app-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
}

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

.app-rating {
    font-size: 0.9rem;
    color: var(--color-accent);
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--color-border);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--color-primary);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(200%); }
}

/* ===== Section Base ===== */
section {
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) 2rem;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 500px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.text-cyan {
    color: var(--color-primary);
}

/* ===== About Section ===== */
.about {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--color-text-muted);
}

.about-text p {
    line-height: 1.8;
}

.skills {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.skill-icon {
    font-size: 1.2rem;
}

/* ===== Code Block ===== */
.code-block {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.code-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.code-dot.red { background: #ef4444; }
.code-dot.yellow { background: #f59e0b; }
.code-dot.green { background: #22c55e; }

.code-title {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--color-text-dark);
    font-family: var(--font-mono);
}

.code-content {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-keyword { color: #c084fc; }
.code-class { color: #38bdf8; }
.code-string { color: #86efac; }
.code-function { color: #fbbf24; }
.code-comment { color: #6b7280; }

/* ===== Apps Section ===== */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.app-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
    transition: all var(--transition-normal);
}

.app-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.app-card.featured {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-color: rgba(6, 182, 212, 0.3);
}

.app-card.coming-soon {
    opacity: 0.8;
}

.app-card.idea {
    opacity: 0.6;
    border-style: dashed;
}

.app-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

.status-dot.yellow { background: var(--color-accent); }
.status-dot.gray { background: var(--color-text-dark); }

.app-visual {
    position: relative;
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.app-icon-large {
    width: 80px;
    height: 80px;
    position: relative;
    z-index: 1;
}

.app-icon-large.placeholder {
    background: var(--color-bg-tertiary);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

.app-bg-icon {
    position: absolute;
    font-size: 8rem;
    font-weight: 800;
    color: var(--color-bg);
    opacity: 0.5;
    z-index: 0;
}

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

.app-name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.app-tagline {
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.app-description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.app-features {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.feature-tag {
    padding: 0.35rem 0.75rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-text);
}

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

.app-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.app-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.app-link:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-light);
}

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

.app-decoration {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.6rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.5;
}

/* ===== Contact Section ===== */
.contact {
    position: relative;
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.contact-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.contact-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin: 1rem 0 2rem;
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.contact-link:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border-light);
    transform: translateX(8px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    color: var(--color-text);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 1rem;
    color: var(--color-text);
}

.contact-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-text {
    font-size: 0.85rem;
    color: var(--color-text-dark);
    text-align: center;
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 10rem;
    }

    .hero-content {
        align-items: center;
    }

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

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

    .hero-visual {
        order: -1;
        margin-bottom: 2rem;
    }

    .scroll-indicator {
        display: none;
    }

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

    .code-block {
        order: -1;
    }

    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }
}

@media (max-width: 640px) {
    .section-container {
        padding: 4rem 1.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

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

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

/* ===== Mobile Menu ===== */
.nav.active .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-bg-secondary);
    padding: 2rem;
    border-bottom: 1px solid var(--color-border);
    gap: 1.5rem;
}

.nav.active .menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav.active .menu-toggle span:nth-child(2) {
    opacity: 0;
}