/* ===================================
   CSS Custom Properties (Design Tokens)
   =================================== */
:root {
    /* Colors - Minimalist Monochrome Palette */
    --color-primary: #ffffff;
    --color-secondary: #a1a1aa;
    --color-accent: #52525b;

    /* Background Colors */
    --color-bg-primary: #09090b;
    /* Zinc 950 */
    --color-bg-secondary: #18181b;
    /* Zinc 900 */
    --color-bg-tertiary: #27272a;
    /* Zinc 800 */

    /* Text Colors */
    --color-text-primary: #f4f4f5;
    /* Zinc 100 */
    --color-text-secondary: #a1a1aa;
    /* Zinc 400 */
    --color-text-muted: #71717a;
    /* Zinc 500 */

    /* Borders */
    --border-color: #27272a;
    --border-hover: #3f3f46;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    /* Increased for more whitespace */

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2.25rem;
    --font-size-2xl: 3rem;
    --font-size-3xl: 4.5rem;
    /* Larger headings */

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows - Subtle */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===================================
   Typography
   =================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

p {
    color: var(--color-text-secondary);
}

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

/* ===================================
   Utility Classes
   =================================== */
.container {
    max-width: 1000px;
    /* Narrower container for readability */
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-2xl);
    text-align: left;
    /* Left aligned for minimalism */
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.section-subtitle {
    text-align: left;
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-lg);
    margin-top: calc(var(--spacing-md) * -0.5);
}

/* ===================================
   Navigation
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(9, 9, 11, 0.8);
    /* Semi-transparent dark */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1.25rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: var(--font-size-md);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

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

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 400;
    transition: color var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 1px;
    /* Thinner lines */
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-greeting {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    font-weight: 400;
}

.hero-name {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    letter-spacing: -0.03em;
}

.hero-title-wrapper {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    min-height: 3rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.hero-title-dynamic {
    color: var(--color-text-primary);
    font-weight: 500;
}

.hero-description {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    font-weight: 300;
}

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

.btn {
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    /* Less rounded */
    font-weight: 500;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    display: inline-block;
}

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

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

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

.btn-secondary:hover {
    border-color: var(--color-text-primary);
}

.hero-visual {
    display: flex;
    justify-content: flex-end;
}

.hero-card {
    width: 300px;
    height: 400px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    position: relative;
    /* Removed glow/gradient effects */
}

.hero-card::before {
    content: '';
    position: absolute;
    inset: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    opacity: 0.5;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 32px;
    border: 1px solid var(--color-text-secondary);
    border-radius: 10px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 6px;
    background: var(--color-text-secondary);
    border-radius: 1px;
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {

    0%,
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateX(-50%) translateY(6px);
    }
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    font-weight: 300;
}

.about-intro {
    font-size: var(--font-size-lg) !important;
    color: var(--color-text-primary) !important;
    font-weight: 400 !important;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    justify-content: center;
}

.stat-card {
    background: transparent;
    border-left: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: border-color var(--transition-fast);
}

.stat-card:hover {
    border-left-color: var(--color-text-primary);
}

.stat-icon {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    filter: grayscale(100%);
    /* Monochrome icons */
}

.stat-title {
    font-size: var(--font-size-sm);
    margin-bottom: 4px;
    color: var(--color-text-primary);
}

.stat-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

/* ===================================
   Skills Section
   =================================== */
.skills {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
}

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

.skill-icon {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    filter: grayscale(100%);
}

.skill-title {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
}

.skill-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    font-weight: 300;
}

/* ===================================
   Interests Section
   =================================== */
.interests {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.interest-card {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-fast);
}

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

.interest-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    filter: grayscale(100%);
}

.interest-title {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-xs);
}

.interest-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--border-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    filter: grayscale(100%);
}

.contact-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.contact-value {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    font-weight: 300;
}

.contact-value:hover {
    color: var(--color-text-secondary);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.social-link:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border-color: var(--color-text-primary);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-bg-primary);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
}

.footer-text {
    text-align: left;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 2.5rem;
        --font-size-2xl: 2rem;
        --font-size-xl: 1.5rem;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg-primary);
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        transition: transform var(--transition-normal);
        z-index: -1;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: left;
    }

    .hero-visual {
        display: none;
    }

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

    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}