/* ============================================
   ABOUT
   ============================================ */

.about-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.about-text p {
    margin-bottom: var(--space-md);
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--gray-500);
}

.about-text p:first-child {
    font-size: var(--text-md);
    color: var(--gray-600);
}

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

.metric-card {
    padding: var(--space-md);
    background: white;
    border-radius: var(--border-radius-lg);
    border: var(--border-light);
    transition: transform var(--duration-base) var(--ease-out),
                box-shadow var(--duration-base) var(--ease-out);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.metric-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.metric-value {
    font-size: var(--text-2xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.metric-icon {
    color: var(--blue);
}

.metric-label {
    font-size: var(--text-xs);
    color: var(--gray-400);
    line-height: 1.4;
}

/* ============================================
   DISCIPLINES
   ============================================ */

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

.discipline-card {
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    border: var(--border-dark);
    background: var(--surface-dark);
    position: relative;
    overflow: hidden;
    transition: background var(--duration-base) ease,
                border-color var(--duration-base) ease,
                transform var(--duration-base) var(--ease-out);
}

.discipline-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

/* Glow effect on hover */
.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    opacity: 0;
    transition: opacity var(--duration-slow) ease;
    pointer-events: none;
}

.discipline-card:hover .card-glow {
    opacity: 1;
}

.discipline-card[data-accent="blue"] .card-glow {
    background: radial-gradient(circle at 50% 50%, rgba(0, 113, 227, 0.06) 0%, transparent 50%);
}

.discipline-card[data-accent="violet"] .card-glow {
    background: radial-gradient(circle at 50% 50%, rgba(168, 85, 247, 0.06) 0%, transparent 50%);
}

.discipline-card[data-accent="teal"] .card-glow {
    background: radial-gradient(circle at 50% 50%, rgba(94, 234, 212, 0.06) 0%, transparent 50%);
}

/* Top accent line */
.discipline-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    opacity: 0;
    transition: opacity var(--duration-base) ease;
}

.discipline-card:hover::before { opacity: 1; }

.discipline-card[data-accent="blue"]::before   { background: linear-gradient(90deg, var(--blue), var(--teal)); }
.discipline-card[data-accent="violet"]::before  { background: linear-gradient(90deg, var(--violet), var(--orange)); }
.discipline-card[data-accent="teal"]::before    { background: linear-gradient(90deg, var(--teal), var(--green)); }

.discipline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
}

.discipline-number {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--gray-500);
    letter-spacing: 0.04em;
}

.discipline-icon {
    font-size: 1.6rem;
    color: var(--gray-200);
}

.discipline-icon svg {
    color: var(--gray-200);
}

.discipline-card h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: white;
    margin-bottom: 0.8rem;
}

.discipline-card p {
    font-size: var(--text-sm);
    color: var(--gray-300);
    line-height: 1.6;
}

.discipline-equation {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--gray-500);
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    letter-spacing: 0.02em;
}

/* ============================================
   RESEARCH
   ============================================ */

.research-list {
    display: flex;
    flex-direction: column;
}

.research-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-lg);
    align-items: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--gray-50);
    transition: background var(--duration-fast) ease;
}

.research-item:first-child {
    border-top: 1px solid var(--gray-50);
}

.research-item:hover {
    background: var(--off-white);
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
    margin-left: calc(-1 * var(--space-sm));
    margin-right: calc(-1 * var(--space-sm));
    border-radius: var(--border-radius-md);
}

.research-content h3 {
    font-size: var(--text-md);
    font-weight: 700;
    letter-spacing: -0.015em;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.research-meta {
    font-size: var(--text-xs);
    color: var(--gray-300);
    font-weight: 500;
    margin-bottom: 0.4rem;
}

.research-desc {
    font-size: var(--text-sm);
    color: var(--gray-400);
    line-height: 1.5;
    display: none;
}

.research-item:hover .research-desc {
    display: block;
}

.research-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

/* ============================================
   QUOTE BANNER
   ============================================ */

.quote-banner {
    background: linear-gradient(135deg, #0f0f1a 0%, #0a0a0a 100%);
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.quote-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(0, 113, 227, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 80%, rgba(168, 85, 247, 0.04) 0%, transparent 40%);
    pointer-events: none;
}

.quote-inner {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.quote-banner blockquote p {
    font-family: var(--font-serif);
    font-size: clamp(var(--text-xl), 3.5vw, var(--text-3xl));
    font-weight: 400;
    font-style: italic;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: -0.01em;
}

.quote-banner cite {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-style: normal;
    color: var(--gray-400);
    margin-top: var(--space-md);
    letter-spacing: 0.06em;
}

/* ============================================
   EXPERIENCE / TIMELINE
   ============================================ */

.timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline-line {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--blue), var(--violet), var(--teal), transparent);
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -3.15rem;
    top: 0.35rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--off-white);
    border: 2px solid var(--gray-200);
    transition: all var(--duration-base) ease;
}

.timeline-item.active .timeline-marker {
    background: var(--blue);
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--gray-300);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-item h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gray-800);
}

.company-sub {
    font-weight: 400;
    color: var(--gray-400);
}

.timeline-role {
    font-size: var(--text-sm);
    color: var(--blue);
    font-weight: 600;
    margin-bottom: 0.6rem;
    display: block;
}

.timeline-item p {
    font-size: var(--text-sm);
    color: var(--gray-400);
    line-height: 1.65;
    max-width: 540px;
    margin-bottom: 0.8rem;
}

.timeline-skills {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

/* ============================================
   PROJECTS
   ============================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.project-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--off-white);
    border-radius: var(--border-radius-lg);
    border: 1px solid transparent;
    text-decoration: none;
    color: inherit;
    transition: border-color var(--duration-base) ease,
                transform var(--duration-base) var(--ease-out),
                box-shadow var(--duration-base) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    border-color: var(--gray-100);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-number {
    font-family: var(--font-mono);
    font-size: 4rem;
    font-weight: 800;
    color: var(--gray-50);
    line-height: 1;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.04em;
    transition: color var(--duration-base) ease;
}

.project-card:hover .project-number {
    color: var(--gray-100);
}

.project-card h3 {
    font-size: var(--text-md);
    font-weight: 700;
    letter-spacing: -0.015em;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.project-card p {
    font-size: var(--text-sm);
    color: var(--gray-400);
    line-height: 1.6;
    flex: 1;
}

.project-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: var(--space-md);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--blue);
    margin-top: var(--space-sm);
    transition: gap var(--duration-fast) ease;
}

.project-card:hover .project-link {
    gap: 0.6rem;
}

/* ============================================
   LIFE OFFLINE / PHOTO MOSAIC
   ============================================ */

.photo-mosaic {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 220px;
    gap: var(--space-sm);
}

.photo-item {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s var(--ease-out);
}

.photo-polaroid img {
    object-position: center 56%;
}

.photo-item:hover img {
    transform: scale(1.06);
}

.photo-large {
    grid-column: span 2;
    grid-row: span 2;
}

.photo-wide {
    grid-column: span 2;
}

.photo-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg) var(--space-md) var(--space-sm);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.65) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--duration-base) ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.photo-item:hover .photo-overlay {
    opacity: 1;
}

.photo-location {
    font-size: var(--text-sm);
    font-weight: 600;
    color: white;
}

.photo-country {
    font-size: var(--text-xs);
    color: var(--gray-200);
    margin-top: 0.15rem;
}

/* ============================================
   CONTACT
   ============================================ */

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

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

.contact-card {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
    border: var(--border-dark);
    background: var(--surface-dark);
    text-decoration: none;
    color: white;
    transition: background var(--duration-base) ease,
                border-color var(--duration-base) ease;
}

a.contact-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-sm);
    background: rgba(0, 113, 227, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--blue-light);
}

.contact-detail {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.contact-type {
    font-size: var(--text-xs);
    color: var(--gray-400);
    font-weight: 500;
}

.contact-value {
    font-size: var(--text-sm);
    color: var(--gray-200);
    font-weight: 500;
}

.contact-arrow {
    color: var(--gray-500);
    transition: transform var(--duration-fast) ease,
                color var(--duration-fast) ease;
}

a.contact-card:hover .contact-arrow {
    transform: translate(2px, -2px);
    color: var(--blue-light);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--gray-400);
    letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-sm);
    padding: 0.85rem 1rem;
    color: white;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    outline: none;
    transition: border-color var(--duration-base) ease,
                background var(--duration-base) ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-500);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--blue-light);
    background: rgba(255, 255, 255, 0.06);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form success state */
.contact-form.success .form-submit {
    background: var(--green);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    background: var(--black);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding: var(--space-lg);
}

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

.footer-logo {
    font-weight: 700;
    font-size: var(--text-sm);
    color: white;
    letter-spacing: -0.02em;
    margin-bottom: 0.3rem;
}

.footer-copy {
    font-size: var(--text-xs);
    color: var(--gray-500);
}

.footer-nav {
    display: flex;
    gap: var(--space-md);
}

.footer-nav a {
    font-size: var(--text-xs);
    color: var(--gray-400);
    transition: color var(--duration-fast) ease;
}

.footer-nav a:hover {
    color: var(--gray-200);
}