/* =====================================================
   Editorial Portfolio Design System
   Premium, Trust-Building, Business-Focused
   ===================================================== */

/* ----- CSS Variables ----- */
:root {
    /* Colors - Sophisticated Neutral Palette */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #141414;

    --text-primary: #fafafa;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;
    --text-accent: #e5e5e5;

    /* Accent - Warm Gold for Trust/Premium Feel */
    --accent-primary: #d4a853;
    --accent-secondary: #c9974a;
    --accent-muted: rgba(212, 168, 83, 0.15);

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;

    /* Layout */
    --max-width: 1200px;
    --content-width: 800px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms 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-sans);
    background: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

/* ----- Loading Screen ----- */
.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-logo {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* ----- Gradient Mesh Background ----- */
.gradient-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
    pointer-events: none;
}

.gradient-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 20s ease-in-out infinite;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.15) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(100, 100, 120, 0.1) 0%, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@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(20px, 10px) scale(1.02);
    }
}

/* ----- Navigation ----- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) var(--space-lg);
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

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

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ----- Hero Section ----- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: var(--content-width);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-lg);
}

.hero-eyebrow::before,
.hero-eyebrow::after {
    content: '';
    width: 40px;
    height: 1px;
    background: var(--accent-primary);
    opacity: 0.5;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ----- Buttons ----- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 1rem 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 0;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

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

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

/* ----- Sections ----- */
.section {
    padding: var(--space-3xl) var(--space-lg);
    position: relative;
}

.section-header {
    max-width: var(--max-width);
    margin: 0 auto var(--space-2xl);
    text-align: center;
}

.section-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    letter-spacing: 0.2em;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* ----- About Section ----- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-wrapper {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
}

.about-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-subtle);
}

.about-initials {
    font-family: var(--font-serif);
    font-size: 4rem;
    color: var(--accent-primary);
    opacity: 0.5;
}

.about-profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.1);
    /* Editorial B&W style */
    transition: filter var(--transition-slow);
}

.about-profile-image:hover {
    filter: grayscale(0%) contrast(1);
    /* Reveal color on hover */
}

.about-image-border {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 1px solid var(--accent-primary);
    opacity: 0.3;
    z-index: -1;
}

.about-content h3 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.about-content p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.about-content .highlight {
    color: var(--accent-primary);
    font-weight: 500;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: var(--space-xs);
}

/* ----- Experience Section ----- */
.experience-list {
    max-width: var(--content-width);
    margin: 0 auto;
}

.experience-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--border-subtle);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.experience-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.experience-date {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.experience-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.experience-company {
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.experience-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

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

.tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 4px 12px;
    border: 1px solid var(--border-subtle);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ----- Projects Section ----- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

/* Featured Projects Layout */
.project-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 0;
    padding: 0;
    /* Featured card handles its own padding */
}

.project-card.featured .project-image-wrapper {
    height: 100%;
    min-height: 400px;
}

.project-card.featured .project-info {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Regular Project Card Layout */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 0;
    /* Reset padding for image handling */
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card:not(.featured) .project-info {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-card:not(.featured) .project-tech {
    margin-top: auto;
    padding-top: var(--space-md);
}

/* Project Images */
.project-image-wrapper {
    position: relative;
    width: 100%;
    height: 240px;
    /* Fixed height for regular cards */
    overflow: hidden;
    background: var(--bg-tertiary);
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.6));
    z-index: 1;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-image-overlay {
    opacity: 0.8;
}

.project-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    display: inline-block;
}

.project-label {
    font-size: 0.75rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-sm);
}

.project-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.project-subtitle {
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.project-stats {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.project-stat {
    text-align: center;
}

.project-stat-value {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.project-stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    list-style: none;
}

.project-tech li {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 4px 10px;
    background: var(--bg-tertiary);
}

.project-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 8px 16px;
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-link:hover {
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.project-link-paper {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.project-link-paper:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.project-link svg {
    width: 14px;
    height: 14px;
}

/* ----- Skills Section ----- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: var(--space-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.skill-category.visible {
    opacity: 1;
    transform: translateY(0);
}

.skill-category:hover {
    border-color: var(--accent-primary);
}

.skill-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.skill-category h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.skill-list {
    list-style: none;
}

.skill-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.9rem;
}

.skill-list li:last-child {
    border-bottom: none;
}

.skill-name {
    color: var(--text-secondary);
}

.skill-level {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.skill-level.expert {
    background: var(--accent-primary);
}

.skill-level.advanced {
    background: var(--text-muted);
}

.skill-level.intermediate {
    background: var(--border-strong);
}

/* ----- Contact Section ----- */
.contact-content {
    max-width: var(--content-width);
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.contact-email {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--text-primary);
    text-decoration: none;
    display: inline-block;
    margin-bottom: var(--space-xl);
    position: relative;
    transition: color var(--transition-base);
}

.contact-email::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.contact-email:hover {
    color: var(--accent-primary);
}

.contact-email:hover::after {
    transform: scaleX(1);
}

.contact-social {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    transition: all var(--transition-base);
}

.social-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

/* ----- Footer ----- */
.footer {
    padding: var(--space-xl) var(--space-lg);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-name {
    color: var(--text-secondary);
}

/* ----- Scroll Progress ----- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--accent-primary);
    width: 0%;
    z-index: 1001;
    transition: width 50ms linear;
}

/* ----- Mobile Menu ----- */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 99;
    padding: var(--space-3xl) var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.mobile-nav-link {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--text-primary);
    text-decoration: none;
}

/* ----- Responsive ----- */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-image {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }

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

    .project-card.featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

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

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

    .nav-toggle {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

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

    .section {
        padding: var(--space-2xl) var(--space-md);
    }

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

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

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

/* ----- Animation Classes ----- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered delays */
.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

.delay-4 {
    transition-delay: 0.4s;
}

.delay-5 {
    transition-delay: 0.5s;
}