:root {
    --bg: #0b0b10;
    --text: #e6e6ef;
    --muted: #a6a6b3;
    --accent: #7C3AED;
    --card: #13131a;
    --ring: #9F67F6;
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
    --radius: 14px;
    --container: 1100px;
    --ease: cubic-bezier(.2, .6, .2, 1);
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --text: #0f1020;
        --muted: #5a5d72;
        --accent: #7C3AED;
        --card: #f6f6fb;
        --ring: #7C3AED;
        --shadow: 0 8px 24px rgba(16, 24, 40, .08);
    }
}

[data-theme="dark"] {
    --bg: #0b0b10;
    --text: #e6e6ef;
    --muted: #a6a6b3;
    --accent: #7C3AED;
    --card: #13131a;
    --ring: #9F67F6;
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

[data-theme="light"] {
    --bg: #ffffff;
    --text: #0f1020;
    --muted: #5a5d72;
    --accent: #7C3AED;
    --card: #f6f6fb;
    --ring: #7C3AED;
    --shadow: 0 8px 24px rgba(16, 24, 40, .08);
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

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

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: var(--container);
    padding: 0 1rem;
    margin: 0 auto;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in oklab, var(--bg), #000 6%);
    backdrop-filter: saturate(140%) blur(8px);
    border-bottom: 1px solid color-mix(in oklab, var(--ring), transparent 80%);
}

.site-header .bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .75rem 0;
}

.logo {
    font-weight: 700;
    letter-spacing: .3px;
}

nav[role="navigation"] {
    display: flex;
    gap: .5rem;
    align-items: center;
}

#site-nav {
    display: flex;
    align-items: center;
    gap: .5rem;
}

#site-nav .primary-links {
    display: flex;
    gap: .5rem;
    align-items: center;
}

#site-nav .nav-actions {
    display: flex;
    gap: .5rem;
    align-items: center;
}

/* Hamburger behaviour */
@media (max-width: 800px) {
    #site-nav {
        position: relative;
    }

    #site-nav .primary-links {
        position: absolute;
        right: 0;
        top: calc(100% + 8px);
        display: none;
        flex-direction: column;
        gap: .5rem;
        padding: .5rem;
        background: color-mix(in oklab, var(--bg), #000 6%);
        border: 1px solid color-mix(in oklab, var(--ring), transparent 80%);
        border-radius: 12px;
        box-shadow: var(--shadow);
        min-width: 180px;
        z-index: 60;
    }

    #site-nav .primary-links.is-open {
        display: flex;
    }

    #menu-toggle {
        display: inline-flex;
    }
}

@media (min-width: 801px) {
    #menu-toggle {
        display: none;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem .9rem;
    border-radius: 12px;
    border: 1px solid color-mix(in oklab, var(--ring), transparent 65%);
    background: color-mix(in oklab, var(--card), transparent 30%);
    color: var(--text);
    transition: transform .2s var(--ease), box-shadow .25s var(--ease), border-color .2s, background .2s;
    will-change: transform;
}

.btn .icon {
    display: inline-block;
    vertical-align: middle;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--ring);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 3px solid var(--ring);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: color-mix(in oklab, var(--accent), #000 10%);
}

.btn-primary:hover {
    box-shadow: 0 10px 20px color-mix(in oklab, var(--accent), transparent 75%);
}

.btn-ghost {
    background: transparent;
}

/* Sections */
main {
    padding-bottom: 3rem;
}

section {
    padding: 3.5rem 0;
}

.section-sep {
    height: 1px;
    width: 100%;
    background: color-mix(in oklab, var(--ring), transparent 85%);
}

.projects.alt {
    background: color-mix(in oklab, var(--card), transparent 92%);
}

.hero {
    min-height: 64vh;
    display: grid;
    place-items: center;
}

.hero h1 {
    font-size: clamp(2rem, 6vw, 3.2rem);
    line-height: 1.15;
    margin: 0 0 .75rem;
}

.hero-grid {
    display: grid;
    align-items: center;
    gap: 1rem;
    grid-template-columns: 1fr;
}

@media (min-width: 900px) {
    .hero-grid {
        grid-template-columns: 1.1fr 1fr;
        gap: 2rem;
    }
}

.spline-wrap {
    width: 100%;
    max-width: 780px;
    aspect-ratio: 16/10;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid color-mix(in oklab, var(--ring), transparent 82%);
    background: color-mix(in oklab, var(--card), #000 6%);
}

.spline-wrap spline-viewer {
    width: 100%;
    height: 100%;
    display: block;
}

.hero-content {
    text-align: center;
}

@media (min-width: 900px) {
    .hero-content {
        text-align: left;
    }
}

.hero p {
    margin: 0 0 1.25rem;
    color: var(--muted);
}

.about {
    /* keep semantics on section */
}

/* moved inline grid to CSS */
.about .container {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: 1fr;
    align-items: center;
}

@media (min-width: 700px) {
    .about .container {
        grid-template-columns: 280px 1fr;
        gap: 2rem;
    }
}

.portrait {
    border-radius: 14px;
    overflow: hidden;
    background: var(--card);
    border: 1px solid color-mix(in oklab, var(--ring), transparent 82%);
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: .5rem;
}

.chip {
    padding: .35rem .6rem;
    border-radius: 999px;
    border: 1px solid color-mix(in oklab, var(--ring), transparent 70%);
    background: color-mix(in oklab, var(--accent), transparent 92%);
    color: var(--text);
    font-size: .9rem;
}

.chip:hover {
    background: color-mix(in oklab, var(--accent), transparent 85%);
}

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

@media (min-width: 600px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 950px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.project-card {
    border-radius: var(--radius);
    background: var(--card);
    border: 1px solid color-mix(in oklab, var(--ring), transparent 82%);
    overflow: hidden;
    position: relative;
    transition: transform .35s var(--ease), box-shadow .35s var(--ease);
    transform-style: preserve-3d;
}

.project-card:hover {
    box-shadow: var(--shadow);
}

.project-media {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: color-mix(in oklab, var(--card), #000 10%);
}

.project-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1);
    transition: transform .6s var(--ease);
}

.project-card:hover .project-media img {
    transform: scale(1.03);
}

.project-body {
    padding: 1rem;
    display: grid;
    gap: .5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
}

.tag {
    font-size: .8rem;
    color: var(--muted);
    border: 1px dashed color-mix(in oklab, var(--ring), transparent 75%);
    padding: .25rem .5rem;
    border-radius: 999px;
}

.contact .container {
    display: grid;
    gap: 1rem;
}

.contact .row {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
    align-items: center;
}

.contact .socials {
    display: flex;
    gap: .6rem;
    flex-wrap: wrap;
}

.contact .socials a {
    border: 1px solid color-mix(in oklab, var(--ring), transparent 70%);
    padding: .5rem .7rem;
    border-radius: 12px;
}

.contact .socials a:hover {
    border-color: var(--ring);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

/* Reveal */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

.stagger>* {
    opacity: 0;
    transform: translateY(12px);
}

.stagger.is-visible>* {
    opacity: 1;
    transform: none;
    transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}

.stagger.is-visible>*:nth-child(1) {
    transition-delay: 50ms;
}

.stagger.is-visible>*:nth-child(2) {
    transition-delay: 150ms;
}

.stagger.is-visible>*:nth-child(3) {
    transition-delay: 250ms;
}

/* Footer */
footer {
    border-top: 1px solid color-mix(in oklab, var(--ring), transparent 82%);
    padding: 1.25rem 0;
    text-align: center;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }

    .project-card {
        transform: none !important;
    }
}

/* Modales de projets */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 300ms var(--ease), visibility 300ms var(--ease);
}

.project-modal.is-open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card);
    border: 1px solid color-mix(in oklab, var(--ring), transparent 30%);
    border-radius: var(--radius);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
    transform: scale(0.9) translateY(20px);
    transition: transform 300ms var(--ease);
}

.project-modal.is-open .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid color-mix(in oklab, var(--ring), transparent 20%);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--text);
}

.modal-close {
    background: none;
    border: none;
    color: var(--muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 6px;
    transition: all 200ms var(--ease);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text);
    background: color-mix(in oklab, var(--ring), transparent 20%);
}

.modal-body {
    padding: 1rem 1.5rem 1.5rem;
}

.modal-body p {
    margin: 0 0 1rem 0;
    color: var(--text);
    line-height: 1.6;
}

.modal-body p:last-child {
    margin-bottom: 0;
}

/* Responsive pour les modales */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-header {
        padding: 1rem 1rem 0.75rem;
    }
    
    .modal-body {
        padding: 0.75rem 1rem 1rem;
    }
}