/* Design System Variables */
:root {
    /* Colors */
    --bg-eggshell: #FAF9F6;
    --text-primary: #1A1A1A;
    --text-body: #2D2D2D;
    --text-muted: #6B6B6B;
    --border-subtle: #E5E4E0;

    /* Typography */
    --font-heading: 'JetBrains Mono', monospace;
    --font-body: 'Inter', sans-serif;
    --font-editorial: 'Playfair Display', serif;

    /* Spacing */
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Layout */
    --max-width: 720px;
    --header-height: 60px;
}

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

/* Base */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-body);
    background-color: var(--bg-eggshell);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ========== Dashboard Grid ========== */
.dashboard {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4px;
    padding: 4px;
}

.dashboard-main {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dashboard-sidebar {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dashboard-bottom {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}

/* Card Base */
.card {
    border: 1px solid var(--text-primary);
    background-color: var(--bg-eggshell);
    display: flex;
    flex-direction: column;
}

.card-header {
    padding: 0.625rem 1rem;
    border-bottom: 1px solid var(--text-primary);
    background-color: var(--bg-eggshell);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.card-body {
    padding: 1rem;
}

/* Header - Console Style */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-eggshell);
    border-bottom: 1px solid var(--text-primary);
    z-index: 100;
}

.header-container {
    display: flex;
    align-items: stretch;
    height: 100%;
}

.header-section {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    border-right: 1px solid var(--text-primary);
}

.header-section:last-child {
    border-right: none;
}

.header-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 0.05em;
}

.header-nav {
    display: flex;
    gap: var(--space-md);
    flex: 1;
    justify-content: center;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding-top: 0.5rem;
    z-index: 200;
    flex-direction: column;
}

.nav-dropdown-menu-inner {
    background: var(--bg-eggshell);
    border: 1px solid var(--text-primary);
    border-radius: 0.5rem;
    padding: 0.5rem;
    min-width: 140px;
    flex-direction: column;
    display: flex;
}

.nav-dropdown:hover .nav-dropdown-menu {
    display: flex;
}

.nav-dropdown-item {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: 0.25rem;
    transition: background 0.15s;
}

.nav-dropdown-item:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.header-tagline {
    border-right: none;
}

.tagline-text {
    font-family: var(--font-editorial);
    font-style: italic;
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.header-status {
    background-color: var(--text-primary);
    border-right: none;
}

.status-text {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--bg-eggshell);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    width: 50%;
    z-index: 2;
}

.hero-name {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-muted);
}

.hero-about {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text-body);
    margin-top: var(--space-md);
    text-align: justify;
    hyphens: auto;
}

.hero-links {
    display: flex;
    gap: 1.25rem;
    margin-top: var(--space-md);
}

.hero-icon {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.hero-icon:hover {
    color: var(--text-primary);
}

.hero-canvas {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    height: 100%;
}

/* ========== Card Content Styles ========== */

/* Experience */
.experience-item {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-subtle);
}

.experience-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.experience-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.experience-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    flex-shrink: 0;
    mix-blend-mode: multiply;
}

.experience-role {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    display: inline;
}

.experience-company {
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--text-body);
}

.experience-company::before {
    content: " — ";
    color: var(--text-muted);
}

.experience-date {
    display: block;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.125rem;
}

.experience-bullets {
    list-style: none;
    margin-top: 0.5rem;
}

.experience-bullets li {
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-body);
    padding-left: 0.875rem;
    position: relative;
    margin-bottom: 0.25rem;
}

.experience-bullets li::before {
    content: "–";
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

/* Education */
.education-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.education-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    flex-shrink: 0;
    mix-blend-mode: multiply;
}

.education-item {
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}

.education-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.education-degree {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    display: inline;
}

.education-school {
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--text-body);
}

.education-school::before {
    content: " — ";
    color: var(--text-muted);
}

.education-date {
    display: block;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.125rem;
}

.education-details {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.education-coursework {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-subtle);
}

.coursework-title {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.coursework-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.coursework-tag {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-body);
    padding: 0.25rem 0.625rem;
    border: 1px solid var(--border-subtle);
}

/* Publications */
.publication-item {
    display: block;
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
    text-decoration: none;
    color: inherit;
}

.publication-item:hover {
    opacity: 0.7;
}

.publication-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.publication-text {
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-body);
    margin-bottom: 0.125rem;
}

.publication-venue {
    font-size: 0.75rem;
    font-style: italic;
    color: var(--text-muted);
}

/* Projects */
.project-item {
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}

.project-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.project-name {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.project-description {
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-body);
}

.project-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.project-link:hover { opacity: 0.7; }

.demo-badge {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.5625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: var(--text-primary);
    color: var(--bg-eggshell);
    padding: 0.125rem 0.5rem;
    vertical-align: middle;
    margin-left: 0.5rem;
}

.hackathon-badge {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.5625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: none;
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    padding: 0.0625rem 0.5rem;
    vertical-align: middle;
    margin-left: 0.5rem;
}

/* Skills */
.skills-category {
    margin-bottom: 0.75rem;
}

.skills-category:last-child {
    margin-bottom: 0;
}

.skills-category-title {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.skill-tag {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-body);
    padding: 0.25rem 0.625rem;
    border: 1px solid var(--border-subtle);
}

/* Personal Section */
.personal {
    max-width: 1200px;
    margin: var(--space-lg) auto;
    padding: 0 var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.personal-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
    text-align: center;
}

.personal-text {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text-body);
    max-width: 900px;
    margin-bottom: var(--space-md);
    text-align: center;
}

/* Carousel */
.carousel {
    width: 100%;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 120px, black calc(100% - 120px), transparent 100%);
    mask-image: linear-gradient(to right, transparent 0%, black 120px, black calc(100% - 120px), transparent 100%);
    margin-bottom: var(--space-lg);
}

.carousel-track {
    display: flex;
    gap: 1rem;
    width: max-content;
}

.carousel-img {
    width: 280px;
    height: 280px;
    object-fit: cover;
    border-radius: 0.5rem;
    border: 1px solid var(--text-primary);
    flex-shrink: 0;
}

/* Contact */
.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-link {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
}

/* Demos Section */
.demos {
    max-width: 1200px;
    margin: var(--space-lg) auto;
    padding: 0 var(--space-md);
}

.demos-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.demos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: var(--space-md);
}

.demo-item {
    background: #000;
    border: 1px solid var(--text-primary);
    border-radius: 0.5rem;
    overflow: hidden;
}

.demo-item-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.demo-item-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.demo-preview {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    background: #fff;
}

.demo-preview-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.demo-preview-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.25rem;
    background: linear-gradient(transparent, rgba(26, 26, 26, 0.85));
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.demo-preview-label {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.03em;
}

.demo-preview-sub {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.demo-video {
    position: relative;
    height: 100%;
}

.demo-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Footer */
.footer {
    padding: var(--space-md) 0;
    text-align: center;
}

.footer p {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========== Responsive Design ========== */
@media (max-width: 900px) {
    .header-tagline,
    .header-status {
        display: none;
    }

    .dashboard {
        grid-template-columns: 2fr 1fr;
    }
}

@media (max-width: 640px) {
    :root {
        --space-md: 1.5rem;
        --space-lg: 3rem;
        --space-xl: 4rem;
    }

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

    .header-nav {
        gap: var(--space-sm);
    }

    .nav-link {
        font-size: 0.75rem;
    }

    .hero-content {
        width: 100%;
        padding: var(--space-xl) var(--space-md);
    }

    .hero-canvas {
        width: 100%;
        opacity: 0.3;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1.125rem;
    }

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

    .dashboard-bottom {
        grid-template-columns: 1fr;
    }
}