/* ==========================================================================
   Portfolio — Diogo Vala Alves
   Thème sombre. Les couleurs se changent dans :root.
   ========================================================================== */

:root {
  --bg: #070b12;
  --bg-alt: #0a1019;
  --surface: #0e1520;
  --surface-2: #121c2a;
  --border: #1c2a3b;
  --border-strong: #2a3d55;
  --text: #e8eef7;
  --muted: #93a3bb;

  --mint: #34e6b4;
  --blue: #5b8cff;
  --violet: #a66bff;
  --amber: #ffb454;
  --pink: #ff6bb5;
  --cyan: #38d4ff;

  --accent: var(--mint);
  --grad: linear-gradient(95deg, var(--mint) 0%, var(--blue) 52%, var(--violet) 100%);

  --radius: 18px;
  --header-h: 64px;
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
}

html:has(dialog[open]) { overflow: hidden; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }

:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: fixed; left: 16px; top: -60px; z-index: 100;
  padding: 10px 16px; border-radius: 10px;
  background: var(--mint); color: #04130e; font-weight: 600; text-decoration: none;
  transition: top .2s;
}
.skip:focus { top: 12px; }

/* ----------------------------- Header ----------------------------- */
.header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(7, 11, 18, .72);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid rgba(28, 42, 59, .7);
}
.header__inner {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__mark { width: 28px; height: 28px; }
.brand__text { font-family: var(--mono); font-weight: 600; font-size: 1.1rem; letter-spacing: .02em; }
.brand__cursor { color: var(--mint); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav { display: flex; gap: 6px; }
.nav a {
  position: relative;
  padding: 8px 14px; border-radius: 999px;
  color: var(--muted); text-decoration: none; font-size: .95rem;
  transition: color .2s, background .2s;
}
.nav a:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.nav a.is-active { color: var(--text); }
.nav a.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px; height: 2px;
  border-radius: 2px; background: var(--grad);
}

.header__actions { display: flex; align-items: center; gap: 10px; }

.pill {
  min-width: 52px; height: 36px; padding: 0 14px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: transparent; color: var(--text);
  font: 600 .8rem/1 var(--font); letter-spacing: .04em; cursor: pointer;
  transition: border-color .2s, background .2s;
}
.pill:hover { border-color: var(--mint); background: rgba(52, 230, 180, .08); }

.burger {
  display: none; width: 40px; height: 40px; padding: 0;
  border: 1px solid var(--border-strong); border-radius: 12px;
  background: transparent; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.burger span { width: 18px; height: 2px; border-radius: 2px; background: var(--text); transition: transform .25s, opacity .25s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ------------------------------ Hero ------------------------------ */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: calc(100svh - var(--header-h));
  display: grid; place-items: center;
  padding: 72px 0 96px;
  text-align: center;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 42%, rgba(91, 140, 255, .14), transparent 70%),
    radial-gradient(40% 35% at 20% 80%, rgba(52, 230, 180, .08), transparent 70%),
    radial-gradient(40% 35% at 85% 20%, rgba(166, 107, 255, .1), transparent 70%);
}
.hero__canvas {
  position: absolute; inset: 0; z-index: -2;
  width: 100%; height: 100%;
  -webkit-mask-image: radial-gradient(75% 75% at 50% 48%, #000 35%, transparent 100%);
          mask-image: radial-gradient(75% 75% at 50% 48%, #000 35%, transparent 100%);
}

.badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: rgba(14, 21, 32, .7);
  color: var(--muted); font-size: .88rem;
}
.badge__dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--mint);
  box-shadow: 0 0 0 0 rgba(52, 230, 180, .6); animation: ping 2s infinite;
}
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(52, 230, 180, .55); }
  80%, 100% { box-shadow: 0 0 0 10px rgba(52, 230, 180, 0); }
}

.hero h1 {
  margin: 26px auto 0; max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5.4rem);
  font-weight: 800; line-height: 1.04; letter-spacing: -.03em;
  text-wrap: balance;
}
.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero__sub { margin: 26px auto 0; max-width: 56ch; color: var(--muted); font-size: clamp(1rem, 2.2vw, 1.2rem); text-wrap: balance; }
.hero__sub strong { color: var(--text); font-weight: 600; }

.hero__cta { margin-top: 36px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

.stats { margin-top: 56px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 40px; }
.stats li { display: flex; align-items: baseline; gap: 8px; color: var(--muted); font-size: .92rem; }
.stats b { font-family: var(--mono); font-size: 1.5rem; font-weight: 600; color: var(--text); }

/* ----------------------------- Buttons ----------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 26px; border-radius: 999px;
  border: 1px solid transparent;
  font: 600 .98rem/1 var(--font); text-decoration: none; cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn--primary { background: var(--mint); color: #04130e; }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -8px rgba(52, 230, 180, .55); }
.btn--ghost { background: rgba(14, 21, 32, .6); border-color: var(--border-strong); color: var(--text); }
.btn--ghost:hover { border-color: var(--mint); background: rgba(52, 230, 180, .08); transform: translateY(-2px); }

/* ---------------------------- Sections ---------------------------- */
.section { padding: clamp(72px, 10vw, 120px) 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid rgba(28, 42, 59, .55); }

.section__head { margin-bottom: 40px; text-align: center; }
h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.1;
}
h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; letter-spacing: -.01em; }
.lead { margin-top: 14px; color: var(--muted); font-size: 1.08rem; max-width: 60ch; }
.section__head .lead { margin-inline: auto; }

/* Apparition au scroll (seulement si JS actif) */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ----------------------------- Filtres ----------------------------- */
.filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 36px; }
.filter {
  display: inline-flex; align-items: center; gap: 8px;
  height: 38px; padding: 0 16px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: transparent;
  color: var(--muted); font: 500 .9rem/1 var(--font); cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.filter:hover { color: var(--text); border-color: var(--muted); }
.filter[aria-pressed="true"] { color: #04130e; background: var(--mint); border-color: var(--mint); font-weight: 600; }
.filter small { font: 500 .75rem/1 var(--mono); opacity: .7; }

/* ------------------------------ Cartes ------------------------------ */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 24px; }

.card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.js .card { animation: rise .55s ease both; animation-delay: calc(var(--i, 0) * 55ms); }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.card:hover, .card:focus-within {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--c1) 60%, var(--border));
  box-shadow: 0 22px 50px -24px color-mix(in srgb, var(--c1) 55%, transparent);
}

.cover { aspect-ratio: 16 / 9; width: 100%; overflow: hidden; background: var(--surface-2); }
.cover svg, .cover img { width: 100%; height: 100%; object-fit: cover; }
.cover .cover__icon { transition: transform .5s ease; transform-origin: 50% 50%; }
.card:hover .cover__icon { transform: scale(1.06) rotate(-2deg); }

.card__body { flex: 1; display: flex; flex-direction: column; gap: 10px; padding: 20px 22px 22px; }
.card__meta { color: var(--c1); font: 500 .76rem/1.3 var(--mono); letter-spacing: .02em; text-transform: uppercase; }
.card h3 { font-size: 1.18rem; line-height: 1.3; }
.card__summary { color: var(--muted); font-size: .95rem; }

.card__open {
  all: unset; cursor: pointer;
}
.card__open::after { content: ""; position: absolute; inset: 0; z-index: 1; border-radius: inherit; }
.card__open:focus-visible { outline: 2px solid var(--mint); outline-offset: 4px; border-radius: 6px; }

.card__more {
  margin-top: auto; padding-top: 6px;
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--cyan); font-size: .92rem; font-weight: 500;
}
.card__more svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s; }
.card:hover .card__more svg { transform: translateX(4px); }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--border); background: rgba(255, 255, 255, .03);
  color: var(--muted); font: 500 .76rem/1.5 var(--mono);
}

/* ---------------------------- Compétences ---------------------------- */
.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 20px; }
.skill {
  padding: 24px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
}
.skill__head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.skill__icon {
  width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px;
  background: color-mix(in srgb, var(--c1) 14%, transparent); color: var(--c1);
}
.skill__icon svg { width: 22px; height: 22px; }

.ico { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  padding: 6px 12px; border-radius: 10px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text); font-size: .88rem;
}

/* ------------------------------ Parcours ------------------------------ */
.path { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.path__col h3 { margin-bottom: 22px; }

.timeline { position: relative; display: grid; gap: 28px; padding-left: 26px; }
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(var(--mint), var(--violet)); opacity: .55; border-radius: 2px;
}
.timeline li { position: relative; }
.timeline li::before {
  content: ""; position: absolute; left: -26px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--bg); border: 2px solid var(--mint);
}
.timeline__period { color: var(--mint); font: 500 .8rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: .03em; }
.timeline h4 { margin: 4px 0 0; font-size: 1.05rem; font-weight: 650; }
.timeline__place { color: var(--muted); font-size: .94rem; }
.timeline ul { margin-top: 10px; display: grid; gap: 4px; color: var(--muted); font-size: .92rem; }
.timeline ul li { padding-left: 16px; }
.timeline ul li::before { all: unset; content: "–"; position: absolute; left: 0; color: var(--border-strong); }

.modules { margin-top: 72px; }
.modules .lead { max-width: 70ch; }
.module-list { margin-top: 24px; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 10px; }
.module {
  position: relative; display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  font-size: .9rem; line-height: 1.35; width: 100%; text-align: left; color: var(--text);
  font-family: var(--font);
}
.module__n { flex: none; font: 600 .82rem/1 var(--mono); color: var(--muted); }
.module--link { cursor: pointer; transition: border-color .2s, background .2s; }
.module--link:hover { border-color: var(--cyan); background: rgba(56, 212, 255, .06); }
.module--link .module__n { color: var(--cyan); }
.module__dot { margin-left: auto; flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

/* ------------------------------ À propos ------------------------------ */
.about { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: start; }
.about__text h2 { margin-bottom: 22px; }
.about__text p { color: var(--muted); font-size: 1.08rem; margin-top: 16px; max-width: 62ch; }
.about__text strong { color: var(--text); font-weight: 600; }
.about__side { display: grid; gap: 20px; }
.panel { padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); }
.panel h3 { margin-bottom: 16px; }
.langs { display: grid; gap: 10px; }
.langs div { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px dashed var(--border); padding-bottom: 8px; }
.langs div:last-child { border-bottom: 0; padding-bottom: 0; }
.langs dt { font-weight: 500; }
.langs dd { color: var(--muted); font-size: .92rem; }

/* ------------------------------- Contact ------------------------------- */
.contact__card {
  position: relative; padding: clamp(32px, 6vw, 64px); text-align: center; overflow: hidden;
  border-radius: 28px; border: 1px solid var(--border-strong);
  background:
    radial-gradient(70% 90% at 50% 0%, rgba(91, 140, 255, .16), transparent 70%),
    var(--surface);
}
.contact__card .lead { margin-inline: auto; }
.contact__actions { margin-top: 32px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.contact__mail { margin-top: 22px; font-family: var(--mono); font-size: .98rem; color: var(--muted); min-height: 1.6em; word-break: break-all; }
.contact__links { margin-top: 18px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.contact__links a {
  display: inline-flex; padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--border-strong); text-decoration: none; font-size: .92rem; color: var(--text);
  transition: border-color .2s, background .2s;
}
.contact__links a:hover { border-color: var(--cyan); background: rgba(56, 212, 255, .07); }
.contact__loc { margin-top: 26px; display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: .92rem; }
.contact__loc svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ------------------------------- Footer ------------------------------- */
.footer { padding: 28px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--text); }

/* ------------------------------- Dialog ------------------------------- */
.dialog {
  width: min(720px, calc(100% - 24px)); max-height: min(88vh, 900px);
  padding: 0; border: 1px solid var(--border-strong); border-radius: 24px;
  background: var(--surface); color: var(--text);
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, .8);
  overflow: hidden;
}
.dialog[open] { display: flex; animation: pop .28s ease both; }
.dialog::backdrop { background: rgba(3, 6, 10, .72); backdrop-filter: blur(6px); animation: fade .28s ease both; }
@keyframes pop { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.dialog__body { position: relative; flex: 1; overflow-y: auto; overscroll-behavior: contain; }
.dialog .cover { aspect-ratio: 21 / 8; }
.dialog__content { padding: 26px clamp(20px, 4vw, 36px) 34px; display: grid; gap: 18px; }
.dialog__content h2 { font-size: clamp(1.5rem, 4vw, 2rem); line-height: 1.2; }
.dialog__content .card__meta { font-size: .8rem; }
.dialog__summary { color: var(--muted); font-size: 1.05rem; }
.dialog h3 { font-size: .8rem; font-family: var(--mono); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.dialog__points { display: grid; gap: 10px; }
.dialog__points li { position: relative; padding-left: 22px; }
.dialog__points li::before {
  content: ""; position: absolute; left: 0; top: .6em; width: 8px; height: 8px; border-radius: 3px;
  background: var(--c1);
}
.dialog__links { display: flex; flex-wrap: wrap; gap: 10px; }

.dialog__close {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--border-strong);
  background: rgba(7, 11, 18, .7); backdrop-filter: blur(8px); color: var(--text); cursor: pointer;
  transition: border-color .2s, background .2s;
}
.dialog__close:hover { border-color: var(--mint); background: rgba(52, 230, 180, .12); }
.dialog__close svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

/* ------------------------------ Responsive ------------------------------ */
@media (max-width: 900px) {
  .path, .about { grid-template-columns: 1fr; gap: 44px; }
}

@media (max-width: 760px) {
  .burger { display: inline-flex; }
  .nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; gap: 2px; padding: 12px 16px 18px;
    background: rgba(7, 11, 18, .97); border-bottom: 1px solid var(--border);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .2s, transform .2s, visibility .2s;
  }
  .nav.is-open { opacity: 1; transform: none; visibility: visible; }
  .nav a { padding: 12px 14px; font-size: 1.02rem; }
  .nav a.is-active::after { left: 14px; right: auto; width: 24px; bottom: 6px; }
  .hero { padding: 56px 0 72px; }
  .stats { gap: 10px 28px; }
  .dialog .cover { aspect-ratio: 16 / 8; }
}

@media (max-width: 440px) {
  .btn { width: 100%; }
  .hero__cta, .contact__actions { flex-direction: column; align-items: stretch; }
}

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