/* =========================================================
   Prelevements.info — Design system
   ========================================================= */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100vh; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
table { border-collapse: collapse; width: 100%; }

/* ---------- Tokens ---------- */
:root {
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  --bg: #f5f6fb;
  --bg-elevated: #ffffff;
  --bg-subtle: #eef0f9;
  --surface: #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.7);
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.14);

  --text: #12172b;
  --text-muted: #5c6480;
  --text-faint: #8991ac;

  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --accent-soft: rgba(79, 70, 229, 0.1);
  --accent-gradient: linear-gradient(120deg, #4f46e5 0%, #7c3aed 55%, #06b6d4 100%);
  --accent-contrast: #ffffff;

  --success: #16a34a;
  --success-soft: rgba(22, 163, 74, 0.12);
  --warning: #d97706;
  --warning-soft: rgba(217, 119, 6, 0.14);
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.12);
  --info: #0891b2;
  --info-soft: rgba(8, 145, 178, 0.12);

  --radius-sm: 0.6rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 12px 32px -12px rgba(15, 23, 42, 0.16);
  --shadow-lg: 0 24px 64px -20px rgba(15, 23, 42, 0.28);
  --shadow-glow: 0 0 0 1px rgba(79, 70, 229, 0.08), 0 20px 50px -20px rgba(79, 70, 229, 0.35);

  --header-h: 4.5rem;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0a0d1a;
  --bg-elevated: #11152594;
  --bg-subtle: #141a2e;
  --surface: #11162a;
  --surface-glass: rgba(20, 25, 46, 0.6);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --text: #f1f3fb;
  --text-muted: #9aa2c0;
  --text-faint: #6b7291;

  --accent: #818cf8;
  --accent-2: #a78bfa;
  --accent-soft: rgba(129, 140, 248, 0.16);
  --accent-gradient: linear-gradient(120deg, #6366f1 0%, #a855f7 55%, #22d3ee 100%);

  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.14);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.14);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.14);
  --info: #22d3ee;
  --info-soft: rgba(34, 211, 238, 0.14);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 16px 40px -16px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 30px 70px -24px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 0 1px rgba(129, 140, 248, 0.14), 0 20px 60px -18px rgba(129, 140, 248, 0.45);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0d1a;
    --bg-elevated: #11152594;
    --bg-subtle: #141a2e;
    --surface: #11162a;
    --surface-glass: rgba(20, 25, 46, 0.6);
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --text: #f1f3fb;
    --text-muted: #9aa2c0;
    --text-faint: #6b7291;
    --accent: #818cf8;
    --accent-2: #a78bfa;
    --accent-soft: rgba(129, 140, 248, 0.16);
    --accent-gradient: linear-gradient(120deg, #6366f1 0%, #a855f7 55%, #22d3ee 100%);
    --success: #4ade80;
    --success-soft: rgba(74, 222, 128, 0.14);
    --warning: #fbbf24;
    --warning-soft: rgba(251, 191, 36, 0.14);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.14);
    --info: #22d3ee;
    --info-soft: rgba(34, 211, 238, 0.14);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 16px 40px -16px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 30px 70px -24px rgba(0, 0, 0, 0.65);
    --shadow-glow: 0 0 0 1px rgba(129, 140, 248, 0.14), 0 20px 60px -18px rgba(129, 140, 248, 0.45);
    color-scheme: dark;
  }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  transition: background-color .25s ease, color .25s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text);
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

p { color: var(--text); }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: 1180px; margin-inline: auto; padding-inline: 1.25rem; }
.section { padding-block: clamp(2.5rem, 5vw, 4.5rem); }

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1 1 auto; }
.min-w-0 { min-width: 0; }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 992px) { .grid-4, .grid-5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px) { .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; } }

.layout-split { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 1.75rem; align-items: start; }
@media (max-width: 992px) { .layout-split { grid-template-columns: 1fr; } }

.gap-1 { gap: .375rem; } .gap-2 { gap: .625rem; } .gap-3 { gap: 1rem; } .gap-4 { gap: 1.5rem; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-faint { color: var(--text-faint); }
.text-sm { font-size: .875rem; }
.text-xs { font-size: .75rem; }
.hidden { display: none !important; }
.mx-auto { margin-inline: auto; }

@media (max-width: 720px) {
  .mobile-hidden { display: none !important; }
}
@media (min-width: 721px) {
  .desktop-hidden { display: none !important; }
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--border);
}
.navbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; width: 100%; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.brand-mark {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: var(--accent-gradient); display: flex; align-items: center; justify-content: center;
  color: #fff; flex-shrink: 0; box-shadow: var(--shadow-glow);
}
.nav-links { display: flex; align-items: center; gap: 1.9rem; }
.nav-links a { font-size: .93rem; font-weight: 500; color: var(--text-muted); transition: color .15s ease; white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: .6rem; }
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--surface); align-items: center; justify-content: center;
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
}
.nav-links-mobile {
  position: absolute; top: 100%; right: 0;
  width: min(280px, 85vw);
  display: flex; flex-direction: column; gap: .25rem; padding: 1rem 1.25rem 1.5rem;
  border: 1px solid var(--border); border-top: none; border-radius: 0 0 0 var(--radius-md);
  background: var(--surface); box-shadow: var(--shadow-lg);
}
.nav-links-mobile a { padding: .65rem .25rem; font-weight: 500; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.nav-links-mobile a:last-child { border-bottom: none; }

.icon-btn {
  width: 40px; height: 40px; border-radius: var(--radius-full); border: 1px solid var(--border);
  background: var(--surface); display: inline-flex; align-items: center; justify-content: center;
  color: var(--text-muted); transition: all .15s ease; flex-shrink: 0;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent-soft); background: var(--accent-soft); }

.lang-select {
  appearance: none; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: var(--radius-full); padding: .45rem 1.9rem .45rem .9rem; font-size: .82rem; font-weight: 600;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%235c6480' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .8rem center;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border-radius: var(--radius-full); border: 1px solid transparent; font-weight: 600; font-size: .95rem;
  padding: .7rem 1.4rem; transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease, color .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: .95rem 1.85rem; font-size: 1.02rem; }
.btn-sm { padding: .45rem 1rem; font-size: .85rem; }
.btn-primary { background: var(--accent-gradient); color: #fff; box-shadow: var(--shadow-glow); }
.btn-primary:hover { filter: brightness(1.08); box-shadow: var(--shadow-lg); }
.btn-outline { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: var(--accent-soft); color: var(--accent); }
.btn-ghost:hover { filter: brightness(1.05); }
.btn-danger-outline { background: transparent; border-color: var(--danger-soft); color: var(--danger); }
.btn-danger-outline:hover { background: var(--danger-soft); }
.btn-block { width: 100%; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}
.card-hover { transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.card-glass {
  background: var(--surface-glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}

/* ---------- Badges / pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .4rem; font-size: .78rem; font-weight: 600;
  padding: .4rem .85rem; border-radius: var(--radius-full); background: var(--accent-soft); color: var(--accent);
}
.badge-lg { font-size: .85rem; padding: .5rem 1rem; }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-info { background: var(--info-soft); color: var(--info); }
.badge-neutral { background: var(--bg-subtle); color: var(--text-muted); }

.pill {
  display: inline-flex; align-items: center; font-size: .82rem; font-weight: 600; letter-spacing: .01em;
  padding: .45rem 1rem; border-radius: var(--radius-full); background: var(--accent-soft); color: var(--accent);
  border: 1px solid transparent; transition: all .15s ease;
}
.pill:hover { background: var(--accent); color: #fff; }

.chip { display: inline-flex; align-items: center; gap: .35rem; font-size: .82rem; padding: .35rem .75rem; border-radius: var(--radius-full); background: var(--bg-subtle); color: var(--text-muted); border: 1px solid var(--border); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding-block: clamp(3rem, 7vw, 5.5rem);
}
.hero::before {
  content: ''; position: absolute; inset: -20% -10%; z-index: 0; opacity: .55;
  background:
    radial-gradient(38% 45% at 18% 25%, rgba(79, 70, 229, .35), transparent 70%),
    radial-gradient(32% 40% at 85% 15%, rgba(124, 58, 237, .28), transparent 70%),
    radial-gradient(40% 45% at 60% 90%, rgba(6, 182, 212, .2), transparent 70%);
  filter: blur(40px);
  animation: aurora 16s ease-in-out infinite alternate;
}
:root[data-theme="dark"] .hero::before { opacity: .8; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .hero::before { opacity: .8; } }
@keyframes aurora {
  0% { transform: translate3d(0,0,0) scale(1); }
  100% { transform: translate3d(2%, -3%, 0) scale(1.08); }
}
.hero-inner { position: relative; z-index: 1; }

/* ---------- Search ---------- */
.search-bar {
  display: flex; gap: .6rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-full);
  padding: .4rem .4rem .4rem 1.1rem; box-shadow: var(--shadow-md);
}
.search-bar input {
  flex: 1; border: none; outline: none; background: transparent; color: var(--text); font-size: 1rem;
}
.search-bar input::placeholder { color: var(--text-faint); }
@media (max-width: 640px) { .search-bar { flex-direction: column; border-radius: var(--radius-md); padding: .8rem; } }

/* ---------- Stat tiles ---------- */
.stat-tile { display: flex; flex-direction: column; gap: .6rem; }
.stat-icon {
  width: 46px; height: 46px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent); flex-shrink: 0;
}
.stat-value { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; }
.stat-label { color: var(--text-muted); font-size: .85rem; }

/* ---------- Avatar ---------- */
.avatar {
  width: 44px; height: 44px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; flex-shrink: 0; background: var(--accent-gradient);
}

/* ---------- List rows (signalements) ---------- */
.row-link {
  display: flex; align-items: center; gap: 1rem; padding: .7rem .6rem; border-radius: var(--radius-md);
  transition: background-color .15s ease;
}
.row-link:hover { background: var(--bg-subtle); }
.row-link .arrow { color: var(--text-faint); flex-shrink: 0; transition: transform .15s ease; }
.row-link:hover .arrow { transform: translateX(3px); color: var(--accent); }

.status-pill { font-size: .75rem; font-weight: 700; padding: .32rem .8rem; border-radius: var(--radius-full); }
.status-ok { background: var(--success-soft); color: var(--success); }
.status-bad { background: var(--danger-soft); color: var(--danger); }

/* ---------- Confidence gauge ---------- */
.gauge {
  --gauge-value: 0;
  --gauge-color: var(--accent);
  width: 74px; height: 74px; border-radius: 50%; position: relative; flex-shrink: 0;
  background: conic-gradient(var(--gauge-color) calc(var(--gauge-value) * 1%), var(--border) 0);
  display: flex; align-items: center; justify-content: center;
}
.gauge::before { content: ''; position: absolute; inset: 7px; border-radius: 50%; background: var(--surface); }
.gauge-value { position: relative; font-family: var(--font-display); font-weight: 700; font-size: 1rem; }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.1rem; }
.field-label { font-size: .85rem; font-weight: 600; color: var(--text); }
.field-label .optional { color: var(--text-faint); font-weight: 500; }
.field-error { color: var(--danger); font-size: .8rem; }
.field-hint { color: var(--text-faint); font-size: .78rem; }

.input, .textarea, .select {
  width: 100%; border: 1px solid var(--border-strong); background: var(--bg-subtle); color: var(--text);
  border-radius: var(--radius-sm); padding: .75rem 1rem; font-size: .95rem; transition: border-color .15s ease, box-shadow .15s ease;
}
.input:focus, .textarea:focus, .select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.textarea { resize: vertical; min-height: 100px; }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235c6480' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.4rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.25rem; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.segmented { display: flex; background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius-full); padding: .3rem; gap: .3rem; }
.segmented button { flex: 1; border: none; background: transparent; padding: .65rem 1rem; border-radius: var(--radius-full); font-weight: 600; font-size: .9rem; color: var(--text-muted); transition: all .15s ease; }
.segmented button.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }

.autocomplete { position: relative; }
.autocomplete-panel {
  position: absolute; top: calc(100% + .4rem); left: 0; right: 0; z-index: 20;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); max-height: 260px; overflow-y: auto; padding: .4rem;
}
.autocomplete-item { display: block; width: 100%; text-align: left; padding: .6rem .75rem; border-radius: var(--radius-sm); font-size: .9rem; background: transparent; border: none; color: var(--text); }
.autocomplete-item:hover { background: var(--accent-soft); color: var(--accent); }

/* ---------- Alerts ---------- */
.alert { display: flex; align-items: flex-start; gap: .7rem; padding: 1rem 1.15rem; border-radius: var(--radius-md); border: 1px solid transparent; font-size: .92rem; }
.alert-info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.alert-success { background: var(--success-soft); color: var(--success); }
.alert-danger { background: var(--danger-soft); color: var(--danger); }
.alert-warning { background: var(--warning-soft); color: var(--warning); }
.alert p, .alert span { color: inherit; }
.alert-close { margin-left: auto; background: none; border: none; color: inherit; opacity: .7; }
.alert-close:hover { opacity: 1; }

/* ---------- Dropzone ---------- */
.dropzone {
  border: 2px dashed var(--border-strong); border-radius: var(--radius-lg); padding: clamp(2rem, 5vw, 3.5rem) 1.5rem;
  text-align: center; cursor: pointer; transition: border-color .15s ease, background-color .15s ease;
  background: var(--bg-subtle);
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: var(--accent-soft); }
.progress { height: 8px; border-radius: var(--radius-full); background: var(--bg-subtle); overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent-gradient); border-radius: var(--radius-full); transition: width .2s ease; }
.progress-bar.is-error { background: var(--danger); }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; }
.table { width: 100%; font-size: .9rem; }
.table th { text-align: left; color: var(--text-muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; padding: .7rem .85rem; border-bottom: 1px solid var(--border); }
.table td { padding: .85rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }

/* ---------- Steps ---------- */
.step { display: flex; gap: 1rem; }
.step-num {
  width: 40px; height: 40px; border-radius: 50%; background: var(--accent-gradient); color: #fff;
  display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-weight: 700; flex-shrink: 0;
}

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding-block: 2rem; text-align: center; color: var(--text-muted); font-size: .85rem; }

[x-cloak] { display: none !important; }

/* ---------- Reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* ---------- 404 ---------- */
.error-illustration { width: min(360px, 80vw); margin-inline: auto; }

/* ---------- Guide article ---------- */
.prose h2 { font-size: 1.35rem; margin-top: 2rem; margin-bottom: .75rem; }
.prose h2:first-child { margin-top: 0; }
.prose p { margin-bottom: 1rem; color: var(--text-muted); }
.prose ol, .prose ul { margin-bottom: 1rem; padding-left: 1.25rem; list-style: decimal; display: flex; flex-direction: column; gap: .5rem; }
.prose ul { list-style: disc; }
.prose li { color: var(--text-muted); }
.prose strong { color: var(--text); }

.guide-link { display: flex; justify-content: space-between; align-items: center; padding: .7rem 0; border-bottom: 1px solid var(--border); font-size: .9rem; font-weight: 500; }
.guide-link:last-child { border-bottom: none; }
.guide-link:hover { color: var(--accent); }