/* Design System: High-End Senior Researcher Portfolio */
:root {
    --bg-color: #ffffff;
    --text-primary: #0a0a0a;
    --text-secondary: #4a4a4a;
    --accent: #2E5BFF; /* Deep Cobalt - Professional & Technical */
    --accent-light: #F0F4FF;
    --border: #f0f0f0;
    --nav-height: 72px;
    --container-width: 1100px;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Base Layout */
section {
    scroll-margin-top: var(--nav-height);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 32px;
}

/* Navigation - Glassmorphism */
nav {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.nav-container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 13px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

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

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: block;
    opacity: 0;
    visibility: hidden;
    position: absolute;
    background: #fff;
    min-width: 280px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
    padding: 12px 0;
    top: calc(100% + 10px);
    right: -20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    transform: translateY(15px);
    transition: var(--transition);
}

.dropdown-content a {
    padding: 14px 24px;
    display: block;
    font-weight: 500;
    font-size: 13px;
}

.dropdown-content.right-align {
    right: 0;
    left: auto;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: radial-gradient(circle at 10% 20%, rgba(46, 91, 255, 0.03) 0%, transparent 40%);
}

.hero h1 {
    font-size: clamp(48px, 8vw, 84px);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 0.95;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.tagline {
    font-size: 22px;
    color: var(--text-secondary);
    max-width: 650px;
    font-weight: 400;
    border-left: 2px solid var(--accent);
    padding-left: 24px;
}

/* Project Layout */
.project-block {
    padding: 120px 0;
    border-top: 1px solid var(--border);
}

.category {
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.15em;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.company-logo {
    height: 24px;
    width: auto;
    object-fit: contain;
    opacity: 0.9;
}

.project-header h2 {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 60px;
    max-width: 800px;
}

.project-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 100px;
    align-items: start;
}

.project-grid.alt {
    grid-template-columns: 1fr 1.2fr;
}

/* Responsive Image Containers with Fix for Cutoffs */
.project-image {
    position: relative;
}

.image-container {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background-color: #ffffff; /* Pure white to blend with screenshots */
    border: 1px solid var(--border);
    aspect-ratio: 16 / 10;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    padding: 24px; /* Safety margin to prevent border-radius from cutting content */
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-container:hover {
    box-shadow: 0 40px 80px rgba(46, 91, 255, 0.1);
    transform: translateY(-8px);
    border-color: var(--accent);
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* CRITICAL FIX: Ensures no content is cropped */
    transition: transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.image-duo {
    display: flex;
    gap: 20px;
    width: 100%;
    align-items: center;
}

.image-duo .image-container {
    flex: 1;
    aspect-ratio: 1 / 1; /* Keeping them square/same size */
}

.image-container:hover img {
    transform: scale(1.05); /* Slight zoom, but contain keeps it safe */
}

figcaption {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 20px;
    font-style: italic;
    padding-left: 10px;
    border-left: 1px solid var(--accent);
}

/* Refined Details & Interactions */
.detail-group {
    margin-bottom: 48px;
    padding-left: 0;
    transition: var(--transition);
    border-left: 0px solid var(--accent);
}

.detail-group:hover {
    padding-left: 24px;
    border-left: 3px solid var(--accent);
}

.detail-group label {
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 14px;
    color: var(--accent);
}

.detail-group p {
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.7;
}

/* Sophisticated Stats */
.stats-row {
    display: flex;
    gap: 60px;
    margin-top: 40px;
    background: var(--accent-light);
    padding: 24px;
    border-radius: 12px;
}

.stat h3 {
    font-size: 28px;
    font-weight: 900;
    color: var(--accent);
    margin-bottom: 4px;
}

.stat p {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

/* Methodology Cards */
.methodology-section {
    padding: 120px 0;
    background-color: #fafafa;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-label {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.2em;
    margin-bottom: 80px;
    text-align: center;
    color: var(--text-primary);
    position: relative;
}

.section-label::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--accent);
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.method-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--accent);
    transition: var(--transition);
}

.method-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.method-card:hover::before {
    height: 100%;
}

.method-card h3 {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.method-card p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* Research Tables */

/* Footer */
footer {
    padding: 100px 0;
    background: #000;
    color: #fff;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    opacity: 0.7;
}

/* Animations */
.fade-in {
    animation: fadeInMove 1.2s cubic-bezier(0.165, 0.84, 0.44, 1) forwards;
}

@keyframes fadeInMove {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 1024px) {
    .project-grid, .project-grid.alt {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    .method-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .method-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 48px;
    }
}