/* ===== FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
    --black: #0a0a0a;
    --white: #fafafa;
    --gray-100: #f0f0f0;
    --gray-200: #e0e0e0;
    --gray-300: #c0c0c0;
    --gray-400: #909090;
    --gray-500: #606060;
    --gray-600: #404040;
    --gray-700: #2a2a2a;
    --gray-800: #1a1a1a;
    --accent: #0a0a0a;
    --accent-inv: #fafafa;
    --red: #e03131;
    --font-display: 'Syne', system-ui, sans-serif;
    --font-mono: 'Space Mono', monospace;
    --radius: 0px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--black) var(--gray-200);
}

html::-webkit-scrollbar {
    width: 4px;
}

html::-webkit-scrollbar-track {
    background: var(--gray-200);
}

html::-webkit-scrollbar-thumb {
    background: var(--black);
}

body {
    font-family: var(--font-display);
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--black);
    text-decoration: none;
    transition: opacity var(--transition);
}

a:hover {
    opacity: 0.6;
}

img {
    max-width: 100%;
    display: block;
}

/* ===== LAYOUT ===== */
.wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px;
}

section {
    padding: 100px 0;
    border-bottom: 1px solid var(--gray-200);
}

/* ===== DIVIDERS ===== */
.divider {
    width: 60px;
    height: 3px;
    background: var(--black);
    margin: 16px 0 24px;
}

/* ===== SECTION HEADERS ===== */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--gray-400);
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    color: var(--black);
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(250, 250, 250, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
}

.navbar .wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--black);
}

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

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-500);
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--black);
    opacity: 1;
}

.nav-settings-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1.5px solid var(--gray-300);
    border-radius: 0;
    cursor: pointer;
    color: var(--gray-500);
    font-size: 1rem;
    transition: all var(--transition);
}

.nav-settings-btn:hover {
    border-color: var(--black);
    color: var(--black);
    transform: rotate(90deg);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 22px;
    height: 1.5px;
    background: var(--black);
    transition: all var(--transition);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    border-bottom: 1px solid var(--gray-200);
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 80px;
    align-items: center;
}

.hero-greeting {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--gray-400);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.2s;
}

.hero-name {
    font-family: var(--font-display);
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.35s;
}

.hero-headline {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--gray-500);
    margin-bottom: 12px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.5s;
}

.hero-location {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.6s;
}

.hero-location svg {
    width: 14px;
    height: 14px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.7s;
}

.btn-dark {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--black);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 2px solid var(--black);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-dark:hover {
    background: transparent;
    color: var(--black);
    opacity: 1;
}

.btn-outline-mono {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: transparent;
    color: var(--black);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 2px solid var(--gray-300);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-outline-mono:hover {
    border-color: var(--black);
    opacity: 1;
}

/* Hero avatar */
.hero-avatar-col {
    position: relative;
    opacity: 0;
    animation: fadeIn 0.6s ease forwards 0.5s;
}

.hero-avatar-frame {
    width: 320px;
    height: 400px;
    overflow: hidden;
    position: relative;
    border: 2px solid var(--gray-200);
}

.hero-avatar-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.1);
    transition: filter 0.6s ease;
}

.hero-avatar-col:hover .hero-avatar-frame img {
    filter: grayscale(0%) contrast(1);
}

.hero-avatar-frame::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(transparent, var(--white));
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== ABOUT ===== */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 80px;
    align-items: start;
}

.about-text {
    font-size: 1.1rem;
    color: var(--gray-600);
    line-height: 2;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.stat-block {
    padding: 24px;
    border: 1px solid var(--gray-200);
    text-align: center;
    transition: all var(--transition);
}

.stat-block:hover {
    border-color: var(--black);
}

.stat-val {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
}

.stat-key {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-400);
    margin-top: 6px;
}

/* ===== SKILLS ===== */
.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin-top: 32px;
}

.skill-block {
    padding: 16px 28px;
    border: 1px solid var(--gray-200);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--gray-600);
    transition: all var(--transition);
    cursor: default;
    margin: -0.5px;
}

.skill-block:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
    z-index: 1;
    position: relative;
}

/* ===== PROJECTS ===== */
.projects-list {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.project-row {
    display: grid;
    grid-template-columns: 240px 1fr;
    border: 1px solid var(--gray-200);
    margin-top: -1px;
    transition: all var(--transition);
    overflow: hidden;
}

.project-row:hover {
    border-color: var(--black);
    z-index: 1;
    position: relative;
}

.project-thumb {
    width: 100%;
    height: 100%;
    min-height: 200px;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition);
    background: var(--gray-100);
}

.project-row:hover .project-thumb {
    filter: grayscale(0%);
}

.project-body {
    padding: 28px 32px;
    display: flex;
    flex-direction: column;
}

.project-number {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--gray-400);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.8;
    flex: 1;
    margin-bottom: 16px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.tech-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 4px 12px;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
}

.project-actions {
    display: flex;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    transition: color var(--transition);
}

.project-link:hover {
    color: var(--black);
    opacity: 1;
}

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

.project-row.no-thumb {
    grid-template-columns: 1fr;
}

/* ===== PUBLICATIONS ===== */
.pubs-list {
    margin-top: 32px;
}

.pub-row {
    display: grid;
    grid-template-columns: 60px 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--gray-200);
    transition: padding-left var(--transition);
}

.pub-row:first-child {
    border-top: 1px solid var(--gray-200);
}

.pub-row:hover {
    padding-left: 12px;
}

.pub-year {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--gray-400);
}

.pub-info {}

.pub-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 2px;
}

.pub-venue {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--gray-400);
    font-style: italic;
}

.pub-open {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-400);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color var(--transition);
}

.pub-open:hover {
    color: var(--black);
    opacity: 1;
}

.pub-open svg {
    width: 12px;
    height: 12px;
}

/* ===== CONTACT ===== */
.contact {
    border-bottom: none;
}

.contact-row {
    display: flex;
    gap: 0;
    margin-top: 32px;
}

.contact-card {
    flex: 1;
    padding: 32px;
    border: 1px solid var(--gray-200);
    margin-right: -1px;
    text-align: center;
    transition: all var(--transition);
}

.contact-card:hover {
    border-color: var(--black);
    z-index: 1;
    position: relative;
}

.contact-icon {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--gray-400);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-lbl {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-400);
    margin-bottom: 4px;
}

.contact-val {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--black);
}

.social-strip {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-top: 40px;
}

.social-link {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-200);
    color: var(--gray-500);
    margin-right: -1px;
    transition: all var(--transition);
}

.social-link:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
    z-index: 1;
    opacity: 1;
}

.social-link svg {
    width: 18px;
    height: 18px;
}

/* ===== FOOTER ===== */
.footer {
    padding: 30px 0;
    text-align: center;
}

.footer p {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--gray-400);
    letter-spacing: 0.05em;
}

.footer a {
    color: var(--black);
    font-weight: 700;
}

/* ===== SETTINGS PANEL ===== */
.settings-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.settings-overlay.active {
    opacity: 1;
    visibility: visible;
}

.settings-panel {
    position: fixed;
    top: 0;
    right: -500px;
    width: 480px;
    height: 100vh;
    background: var(--white);
    border-left: 1px solid var(--gray-200);
    z-index: 1501;
    display: flex;
    flex-direction: column;
    transition: right 0.35s ease;
    overflow-y: auto;
}

.settings-panel.active {
    right: 0;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.settings-header h2 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
}

.settings-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1.5px solid var(--gray-300);
    cursor: pointer;
    color: var(--gray-500);
    font-size: 1.1rem;
    transition: all var(--transition);
}

.settings-close:hover {
    border-color: var(--black);
    color: var(--black);
}

.settings-body {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.settings-body p {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-bottom: 8px;
    line-height: 1.6;
}

.settings-body .highlight {
    color: var(--black);
    font-weight: 600;
}

.settings-body textarea {
    flex: 1;
    min-height: 300px;
    margin-top: 16px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.7;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    color: var(--black);
    resize: vertical;
    outline: none;
    transition: border-color 0.2s ease;
}

.settings-body textarea:focus {
    border-color: var(--black);
}

.settings-error {
    font-size: 0.8rem;
    color: var(--red);
    margin-top: 8px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.settings-error.visible {
    opacity: 1;
}

.settings-success {
    font-size: 0.8rem;
    color: #2b8a3e;
    margin-top: 8px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.settings-success.visible {
    opacity: 1;
}

.settings-footer {
    display: flex;
    justify-content: space-between;
    padding: 20px 24px;
    border-top: 1px solid var(--gray-200);
}

.btn-reset {
    padding: 10px 24px;
    background: transparent;
    border: 1.5px solid var(--gray-300);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-reset:hover {
    border-color: var(--black);
    color: var(--black);
}

.btn-apply {
    padding: 10px 24px;
    background: var(--black);
    border: 1.5px solid var(--black);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--white);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-apply:hover {
    background: var(--gray-700);
}

/* ===== PIN AUTH MODAL ===== */
.pin-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(6px);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.pin-overlay.active {
    opacity: 1;
    visibility: visible;
}

.pin-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: 2001;
    background: var(--white);
    border: 2px solid var(--black);
    width: 340px;
    max-width: 90vw;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.pin-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.pin-modal-header {
    padding: 24px 24px 0;
    text-align: center;
}

.pin-modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--black);
}

.pin-modal-body {
    padding: 20px 24px;
    text-align: center;
}

.pin-subtitle {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--gray-500);
    margin-bottom: 20px;
}

.pin-input {
    width: 170px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 2rem;
    letter-spacing: 0.6em;
    padding: 12px 16px;
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    color: var(--black);
    outline: none;
    transition: border-color 0.2s ease;
}

.pin-input:focus {
    border-color: var(--black);
}

.pin-error {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--red);
    margin-top: 12px;
    min-height: 18px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.pin-error.visible {
    opacity: 1;
}

.pin-lockout {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--gray-500);
    margin-top: 4px;
    min-height: 16px;
}

.pin-modal-footer {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 0 24px 24px;
}

.pin-modal-footer .btn-reset,
.pin-modal-footer .btn-apply {
    padding: 10px 28px;
    font-size: 0.75rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-name {
        font-size: 3rem;
    }

    .hero-avatar-frame {
        width: 100%;
        height: 300px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .project-thumb {
        height: 200px;
    }

    .contact-row {
        flex-direction: column;
    }

    .contact-card {
        margin-right: 0;
        margin-bottom: -1px;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-200);
        padding: 20px 32px;
        gap: 16px;
    }

    .settings-panel {
        width: 100vw;
    }
}