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

:root {
    --color-bg: #0a0a0b;
    --color-surface: #141416;
    --color-surface-hover: #1c1c1f;
    --color-border: #2a2a2e;
    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-accent: #ec4899;
    --color-accent-hover: #f472b6;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --container-max: 1080px;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-2xl: 8rem;
    --radius: 12px;
    --transition: 0.2s ease;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), background var(--transition);
}

.site-header.scrolled {
    border-bottom-color: var(--color-border);
}

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

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

.nav-list {
    list-style: none;
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
}

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

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

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    flex-direction: column;
    gap: 5px;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-2xl) 0 var(--space-xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.hero-greeting {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
}

.hero-name {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    color: var(--color-text-muted);
    max-width: 540px;
    margin-bottom: var(--space-lg);
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
    transform: translateY(-1px);
}

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

.btn-outline:hover {
    color: var(--color-text);
    border-color: var(--color-text-muted);
    transform: translateY(-1px);
}

/* ===== Section Titles ===== */
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    margin-top: var(--space-sm);
}

/* ===== About ===== */
.about {
    padding: var(--space-2xl) 0;
}

.about-content {
    display: grid;
    gap: var(--space-lg);
}

.about-text p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    font-size: 1.0625rem;
    line-height: 1.7;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.stat {
    text-align: center;
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.stat-number {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-accent);
    display: inline;
    font-variant-numeric: tabular-nums;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== Skills ===== */
.skills {
    padding: var(--space-2xl) 0;
}

.skills-grid {
    display: grid;
    gap: var(--space-sm);
}

.skill-card {
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), transform var(--transition);
}

.skill-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.skill-icon {
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.skill-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.skill-card p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ===== Work ===== */
.work {
    padding: var(--space-2xl) 0;
}

.work-grid {
    display: grid;
    gap: var(--space-md);
}

.work-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition);
}

.work-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.work-card-image {
    height: 200px;
    width: 100%;
}

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

.work-card-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.work-card-content p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.25rem 0.625rem;
    background: rgba(236, 72, 153, 0.1);
    color: var(--color-accent);
    border-radius: 6px;
    border: 1px solid rgba(236, 72, 153, 0.2);
}

/* ===== Contact ===== */
.contact {
    padding: var(--space-2xl) 0;
}

.contact-intro {
    color: var(--color-text-muted);
    font-size: 1.0625rem;
    max-width: 500px;
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.contact-grid {
    display: grid;
    gap: var(--space-sm);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    transition: border-color var(--transition), transform var(--transition);
}

.contact-card:hover {
    border-color: var(--color-accent);
    color: var(--color-text);
    transform: translateY(-2px);
}

.contact-card svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

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

.contact-value {
    font-weight: 500;
}

/* ===== Footer ===== */
.site-footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Mobile Navigation ===== */
@media (max-width: 640px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 11, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav.open {
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--space-lg);
    }

    .nav-link {
        font-size: 1.25rem;
    }

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

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

    .nav-toggle.active .nav-toggle-bar:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .stat {
        padding: var(--space-sm);
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.6875rem;
    }

    .hero-cta .btn {
        width: 100%;
        text-align: center;
    }

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

/* ===== Tablet ===== */
@media (min-width: 641px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-card {
        flex-direction: column;
        text-align: center;
        padding: var(--space-lg) var(--space-md);
    }

    .contact-label {
        margin-top: var(--space-xs);
    }
}

/* ===== Desktop ===== */
@media (min-width: 960px) {
    .about-content {
        grid-template-columns: 2fr 1fr;
        align-items: start;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .skills-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .work-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .work-card-image {
        height: 180px;
    }
}