/* ==============================================
   TIMOTHÉ DUC — PORTFOLIO
   Dark "Neon Terminal" aesthetic
   ============================================== */

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

/* ---------- Tokens ---------- */
:root {
    --bg:          #0a0a0f;
    --bg-alt:      #111118;
    --bg-card:     #15151e;
    --text:        #e8e4de;
    --text-dim:    #8a879a;
    --accent:      #00d4aa;
    --accent-hi:   #00e8bb;
    --accent-soft: rgba(0,212,170,.08);
    --accent-glow: rgba(0,212,170,.15);
    --border:      rgba(255,255,255,.06);
    --border-hi:   rgba(0,212,170,.3);

    --ff-display: 'Syne', sans-serif;
    --ff-body:    'Outfit', sans-serif;
    --ff-mono:    'JetBrains Mono', monospace;

    --pad-section: clamp(5rem, 12vh, 9rem);
    --container:   min(90%, 1200px);
}

/* ---------- Base ---------- */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--ff-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--bg); }

img  { display: block; max-width: 100%; }
a    { color: inherit; text-decoration: none; }
strong { color: var(--accent); font-weight: 500; }

/* ---------- Noise overlay ---------- */
.noise {
    position: fixed; inset: 0;
    pointer-events: none; z-index: 9999;
    opacity: .035;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

/* ================================================
   NAVIGATION
   ================================================ */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem clamp(1.5rem, 5vw, 3rem);
    transition: background .3s, backdrop-filter .3s, border-color .3s;
    border-bottom: 1px solid transparent;
}

.nav.scrolled {
    background: rgba(10,10,15,.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--border);
}

.nav-logo img { border-radius: 8px; transition: opacity .2s; }
.nav-logo:hover img { opacity: .75; }

.nav-toggle { display: none; }

.nav-links {
    display: flex; align-items: center; gap: 2rem;
}

.nav-links a {
    font-family: var(--ff-mono);
    font-size: .78rem;
    letter-spacing: .06em;
    color: var(--text-dim);
    transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
    padding: .5rem 1.15rem !important;
    border: 1px solid var(--border-hi) !important;
    border-radius: 6px;
    color: var(--accent) !important;
    transition: background .25s, color .25s, box-shadow .25s !important;
}
.nav-cta:hover {
    background: var(--accent) !important;
    color: var(--bg) !important;
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Hamburger (mobile) */
.nav-burger {
    display: none; flex-direction: column; gap: 5px;
    cursor: pointer; z-index: 10;
}
.nav-burger span {
    display: block; width: 24px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform .3s, opacity .25s;
}

/* ================================================
   HERO
   ================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 7rem clamp(1.5rem, 5vw, 3rem) 3rem;
    overflow: hidden;
}

/* Background grid + glow */
.hero-bg { position: absolute; inset: 0; z-index: 0; }

.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(0,212,170,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,170,.03) 1px, transparent 1px);
    background-size: 60px 60px;
    -webkit-mask-image: radial-gradient(ellipse 60% 55% at 50% 45%, black 10%, transparent 100%);
    mask-image: radial-gradient(ellipse 60% 55% at 50% 45%, black 10%, transparent 100%);
}

.hero-glow {
    position: absolute;
    top: 15%; left: 50%; width: 700px; height: 700px;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(0,212,170,.07) 0%, transparent 70%);
    filter: blur(60px);
    animation: pulse 7s ease-in-out infinite alternate;
}

@keyframes pulse {
    from { opacity: .45; transform: translateX(-50%) scale(1); }
    to   { opacity: 1;   transform: translateX(-50%) scale(1.18); }
}

/* Content */
.hero-content {
    position: relative; z-index: 1;
    text-align: center;
    width: 100%;
}

.hero-tag {
    display: inline-flex; align-items: center; gap: .6rem;
    font-family: var(--ff-mono);
    font-size: .78rem;
    color: var(--accent);
    letter-spacing: .12em;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.tag-pulse {
    width: 8px; height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
    box-shadow: 0 0 8px var(--accent-glow);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%      { opacity: .2; }
}

.hero-title {
    font-family: var(--ff-display);
    font-weight: 800;
    line-height: .92;
    letter-spacing: -.035em;
    margin: 0 auto 1.8rem;
    text-align: center;
}

.hero-line {
    display: block;
    font-size: clamp(3.2rem, 13vw, 9.5rem);
}

.dot { color: var(--accent); }

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 300;
    color: var(--text-dim);
    max-width: 540px;
    margin: 0 auto 2.5rem;
    line-height: 1.75;
}

.hero-actions {
    display: flex; gap: 1rem;
    justify-content: center; flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .85rem 1.8rem;
    border-radius: 8px;
    font-family: var(--ff-body);
    font-size: .95rem; font-weight: 500;
    transition: all .3s;
    cursor: pointer;
    border: none;
}

.btn-fill {
    background: var(--accent); color: var(--bg);
}
.btn-fill:hover {
    background: var(--accent-hi);
    box-shadow: 0 4px 30px rgba(0,212,170,.3);
    transform: translateY(-2px);
}

.btn-ghost {
    border: 1px solid var(--border);
    color: var(--text-dim);
    background: transparent;
}
.btn-ghost:hover {
    border-color: var(--text-dim);
    color: var(--text);
}

/* Scroll indicator */
.hero-scroll {
    position: absolute; bottom: 2rem; left: 50%;
    transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: .5rem;
    font-family: var(--ff-mono);
    font-size: .6rem; color: var(--text-dim);
    letter-spacing: .18em; text-transform: uppercase;
}

.scroll-bar {
    width: 1px; height: 36px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollAnim 2.2s ease-in-out infinite;
}

@keyframes scrollAnim {
    0%   { transform: scaleY(0); transform-origin: top; }
    45%  { transform: scaleY(1); transform-origin: top; }
    46%  { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ================================================
   SECTION — Shared
   ================================================ */
.sec-head {
    max-width: var(--container);
    margin: 0 auto clamp(2.5rem, 5vw, 4.5rem);
}

.sec-num {
    display: block;
    font-family: var(--ff-mono);
    font-size: .72rem;
    color: var(--accent);
    letter-spacing: .12em;
    margin-bottom: .7rem;
}

.sec-title {
    font-family: var(--ff-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -.025em;
    margin-bottom: .6rem;
}

.sec-desc {
    color: var(--text-dim);
    font-size: 1.05rem;
    max-width: 460px;
}

/* ================================================
   SERVICES
   ================================================ */
.services {
    padding: var(--pad-section) clamp(1.5rem, 5vw, 3rem);
    background: var(--bg-alt);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: var(--container);
    margin: 0 auto;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.2rem;
    transition: transform .35s cubic-bezier(.16,1,.3,1),
                border-color .4s,
                box-shadow .4s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hi);
    box-shadow: 0 10px 50px rgba(0,0,0,.35),
                0 0 0 1px var(--border-hi);
}

.card-icon {
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 14px;
    background: var(--accent-soft);
    border: 1px solid rgba(0,212,170,.1);
    margin-bottom: 1.5rem;
    transition: background .3s, box-shadow .4s;
}

.card:hover .card-icon {
    background: rgba(0,212,170,.13);
    box-shadow: 0 0 28px rgba(0,212,170,.18);
}

.card h3 {
    font-family: var(--ff-display);
    font-size: 1.25rem; font-weight: 700;
    margin-bottom: .65rem;
}

.card p {
    color: var(--text-dim);
    font-size: .92rem; line-height: 1.65;
    margin-bottom: 1.4rem;
}

.tags {
    display: flex; flex-wrap: wrap; gap: .45rem;
    list-style: none;
}

.tags li {
    font-family: var(--ff-mono);
    font-size: .68rem;
    color: var(--accent);
    background: var(--accent-soft);
    padding: .28rem .7rem;
    border-radius: 4px;
    letter-spacing: .02em;
}

/* ================================================
   DÉMARCHE
   ================================================ */
.demarche {
    padding: var(--pad-section) clamp(1.5rem, 5vw, 3rem);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    max-width: var(--container);
    margin: 0 auto;
}

.step {
    padding: 2rem 1.5rem;
    border-left: 2px solid var(--border);
    transition: border-color .35s;
}

.step:hover { border-color: var(--accent); }

.step-n {
    display: block;
    font-family: var(--ff-display);
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1;
    color: rgba(0,212,170,.06);
    margin-bottom: .6rem;
    transition: color .35s;
}

.step:hover .step-n { color: rgba(0,212,170,.14); }

.step h3 {
    font-family: var(--ff-display);
    font-size: 1.1rem; font-weight: 700;
    margin-bottom: .45rem;
}

.step p {
    color: var(--text-dim);
    font-size: .88rem; line-height: 1.65;
}

/* ================================================
   TECHNOLOGIES (marquee)
   ================================================ */
.tech {
    padding: var(--pad-section) 0;
    background: var(--bg-alt);
    overflow: hidden;
}

.tech .sec-head {
    padding: 0 clamp(1.5rem, 5vw, 3rem);
}

.marquee {
    position: relative;
    padding: 1rem 0;
    overflow: hidden;
}

/* Fading edges */
.marquee::before,
.marquee::after {
    content: ''; position: absolute;
    top: 0; bottom: 0; width: 100px; z-index: 2;
}
.marquee::before { left: 0;  background: linear-gradient(to right, var(--bg-alt), transparent); }
.marquee::after  { right: 0; background: linear-gradient(to left,  var(--bg-alt), transparent); }

.marquee-track {
    display: flex; gap: .8rem;
    width: max-content;
    animation: slide 42s linear infinite;
}

.marquee-rev .marquee-track {
    animation-direction: reverse;
    animation-duration: 36s;
}

.marquee-track span {
    font-family: var(--ff-mono);
    font-size: .8rem;
    color: var(--text-dim);
    white-space: nowrap;
    padding: .55rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-card);
    transition: border-color .3s, color .3s;
}

.marquee-track span:hover {
    border-color: var(--border-hi);
    color: var(--accent);
}

@keyframes slide {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ================================================
   CONTACT
   ================================================ */
.contact {
    padding: var(--pad-section) clamp(1.5rem, 5vw, 3rem);
    text-align: center;
}

.contact .sec-head { text-align: center; }

.contact-body { max-width: 600px; margin: 0 auto; }

.contact-lead {
    font-family: var(--ff-display);
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -.02em;
    line-height: 1.15;
    margin-bottom: 2rem;
}

.contact-mail {
    display: inline-block;
    font-family: var(--ff-mono);
    font-size: clamp(.95rem, 2.5vw, 1.35rem);
    color: var(--accent);
    padding: 1rem 2rem;
    border: 1px solid var(--border-hi);
    border-radius: 10px;
    transition: all .3s;
}

.contact-mail:hover {
    background: var(--accent);
    color: var(--bg);
    box-shadow: 0 0 40px rgba(0,212,170,.28);
    transform: translateY(-3px);
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
    border-top: 1px solid var(--border);
    padding: 2rem clamp(1.5rem, 5vw, 3rem);
}

.footer-inner {
    max-width: var(--container);
    margin: 0 auto;
    display: flex; justify-content: space-between;
    align-items: center; flex-wrap: wrap; gap: 1rem;
}

.footer-inner p {
    font-family: var(--ff-mono);
    font-size: .72rem;
    color: var(--text-dim);
}

/* ================================================
   REVEAL ANIMATION
   ================================================ */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .75s cubic-bezier(.16,1,.3,1),
                transform .75s cubic-bezier(.16,1,.3,1);
}

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

/* Stagger children */
.cards .card:nth-child(2) { transition-delay: .1s; }
.cards .card:nth-child(3) { transition-delay: .2s; }

.steps .step:nth-child(2) { transition-delay: .08s; }
.steps .step:nth-child(3) { transition-delay: .16s; }
.steps .step:nth-child(4) { transition-delay: .24s; }

/* ================================================
   REDUCED MOTION
   ================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 768px) {
    .nav-burger { display: flex; }

    .nav-links {
        position: fixed;
        top: 0; right: 0; bottom: 0;
        width: min(300px, 80vw);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        padding: 2rem;
        background: var(--bg-alt);
        border-left: 1px solid var(--border);
        transform: translateX(100%);
        transition: transform .4s cubic-bezier(.16,1,.3,1);
    }

    .nav-toggle:checked ~ .nav-links {
        transform: translateX(0);
    }

    .nav-toggle:checked ~ .nav-burger span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-links a { font-size: 1rem; color: var(--text); }

    .hero-scroll { display: none; }

    .cards { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr 1fr; }

    .footer-inner { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
    .hero-line { font-size: clamp(2.5rem, 16vw, 3.5rem); }
    .card { padding: 1.5rem; }
    .steps { grid-template-columns: 1fr; }
}