/* Thème du portail : clair / sombre selon l'appareil. Aucune ressource externe (polices système). */
:root {
  /* SharkDrop : acier, cyan des circuits (guidage), orange « Drop » (actions principales) */
  --bg: #eef2f6; --panel: #ffffff; --ink: #121a22; --muted: #5a6776; --line: #d9e1ea;
  --accent: #0b8ea2; --aink: #ffffff; --field: #f1f5f9; --danger: #c62828; --warn: #d18a00;
  --drop: #e8650a; --dink: #ffffff;
  --stage: #0d141b; --stage2: #12303a;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
  --shadow: 0 18px 50px -26px rgba(16, 32, 48, .5);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d141b; --panel: #151f29; --ink: #e8eef4; --muted: #a7b4c2; --line: #283748;
    --accent: #38c8dc; --aink: #04161a; --field: #0f1820; --danger: #ff6b6b; --warn: #f5b942;
    --drop: #ff7a1f; --dink: #1a0d03;
    --stage: #0b1117; --stage2: #10303a; --shadow: 0 20px 56px -28px rgba(0, 0, 0, .75);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 15px; line-height: 1.5; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Connexion ---------- */
.stage {
  min-height: 100vh; display: grid; place-items: center; padding: 28px 16px; position: relative; overflow-x: hidden;
  background: radial-gradient(120% 90% at 15% 0%, var(--stage2) 0%, var(--stage) 60%);
}
.stage::before {
  content: ""; position: fixed; inset: 0; opacity: .16; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 40%, #000, transparent); mask-image: radial-gradient(70% 70% at 50% 40%, #000, transparent);
}
.card {
  position: relative; width: 100%; max-width: 360px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px 24px 20px; box-shadow: 0 30px 60px -30px rgba(0,0,0,.6);
}
.logo { width: 48px; height: 48px; border-radius: 13px; background: var(--accent); color: var(--aink); display: grid; place-items: center; margin: 0 auto 10px; }
.logo svg { width: 25px; height: 25px; }
.logo { background: #1c262f; overflow: hidden; width: 72px; height: 72px; border-radius: 18px; }
.logo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card h1 { font-size: 1.3rem; font-weight: 650; text-align: center; margin: 0; letter-spacing: -.01em; }
.tag { font-size: .8rem; color: var(--muted); text-align: center; margin: 2px 0 18px; }
.intro { font-size: .84rem; color: var(--muted); margin: 0 0 12px; }
label { display: block; font-size: .74rem; font-weight: 600; color: var(--muted); margin: 12px 0 5px; }
.inp { width: 100%; height: 42px; border-radius: 10px; background: var(--field); border: 1px solid var(--line); padding: 0 12px; font-size: .92rem; }
.inp:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.inp.code { font-family: var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.box { position: relative; }
.box .inp { padding-right: 44px; }
.eye { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; border: 0; background: none; color: var(--muted); border-radius: 8px; cursor: pointer; display: grid; place-items: center; padding: 0; }
.eye svg { width: 18px; height: 18px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); font-weight: 600; font-size: .9rem; cursor: pointer; }
.btn.pri { width: 100%; margin-top: 18px; border-color: var(--drop); background: var(--drop); color: var(--dink); box-shadow: 0 6px 20px -10px var(--drop); }
.btn[disabled] { opacity: .6; cursor: wait; }
.link { border: 0; background: none; padding: 0; color: var(--accent); font-weight: 600; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.small { font-size: .78rem; text-align: center; margin: 14px 0 0; }
.muted { color: var(--muted); }
.hint { font-size: .74rem; color: var(--muted); margin: 6px 0 0; }
.stage .err { display: flex; gap: 9px; align-items: flex-start; font-size: .8rem; color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent); border-radius: 10px; padding: 9px 11px; margin-bottom: 4px; }
.meta { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); font-size: .7rem; color: var(--muted); }

/* ---------- Application (provisoire, étape 1) ---------- */
.shell { max-width: 760px; margin: 0 auto; padding: 32px 16px; }
.top { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.top .logo { margin: 0; width: 38px; height: 38px; border-radius: 10px; }
.top .logo svg { width: 20px; height: 20px; }
.top b { font-size: 1.1rem; }
.top .sp { flex: 1; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }
.panel h2 { margin: 0 0 6px; font-size: 1.05rem; }
.chip { display: inline-flex; font-size: .72rem; font-weight: 600; padding: 2px 9px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.stage .ok { display: flex; gap: 9px; align-items: flex-start; font-size: .8rem; color: var(--ink); background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); border-radius: 10px; padding: 9px 11px; margin-bottom: 4px; }

/* fond animé (fond.js) : derrière la carte ; l'ancienne trame est masquée quand il tourne */
.fond { position: fixed; inset: 0; width: 100%; height: 100%; display: block; z-index: 0; }
.stage .card { z-index: 1; }
.fond-anime::before { display: none; }

/* SharkDrop : mot « Drop » en orange, halo cyan autour du logo */
.drop-word { color: var(--drop); }
.logo { box-shadow: 0 0 0 1px var(--line), 0 0 40px -8px var(--accent); }