:root {
  --bg: #1a1a2e;
  --bg2: #16213e;
  --bg3: #0f3460;
  --accent: #e94560;
  --accent2: #f5a623;
  --text: #eaeaea;
  --text2: #a0a0b0;
  --success: #4caf50;
  --danger: #e94560;
  --card: #1e2a45;
  --border: #2a3a5e;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  padding-bottom: 70px;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ── Auth screens ── */
#auth-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100dvh;
  padding: 24px 20px;
  background: linear-gradient(160deg, var(--bg) 0%, var(--bg3) 100%);
  overflow-y: auto;
}
.auth-hero { text-align: center; padding: 24px 0 8px; }
.auth-logo { font-size: 3rem; margin-bottom: 8px; }
.auth-hero h1 { font-size: 2rem; color: var(--accent); margin-bottom: 4px; }
.auth-hero p { color: var(--text2); font-size: 0.9rem; margin-bottom: 24px; }

.auth-box {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px 24px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.auth-box h2 { font-size: 1.2rem; margin-bottom: 20px; color: var(--text); }

.auth-box .form-group input {
  width: 100%;
  padding: 13px 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
}
.auth-box .form-group input:focus { outline: none; border-color: var(--accent); }

.pw-field { position: relative; }
.pw-field input { padding-right: 48px !important; }
.pw-toggle {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 1rem; color: var(--text2);
  padding: 4px;
}
.pw-strength { margin-top: 4px; min-height: 18px; font-size: 0.78rem; font-weight: 600; }

.auth-submit {
  width: 100%; padding: 14px;
  background: var(--accent); color: white;
  border: none; border-radius: 8px;
  font-size: 1rem; font-weight: 600;
  cursor: pointer; margin-top: 8px;
  transition: opacity 0.2s;
}
.auth-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.auth-submit:hover:not(:disabled) { opacity: 0.88; }

.auth-links { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; text-align: center; }
.auth-links a { color: var(--text2); font-size: 0.85rem; text-decoration: none; }
.auth-links a:hover { color: var(--accent); }

.auth-tabs {
  display: flex;
  border-radius: 10px;
  background: var(--bg2);
  padding: 4px;
  margin-bottom: 24px;
  gap: 4px;
}
.auth-tab {
  flex: 1;
  padding: 10px 8px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text2);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.auth-tab.active {
  background: var(--card);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
.auth-text-btn {
  background: none;
  border: none;
  color: var(--text2);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 4px 8px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.auth-text-btn:hover { color: var(--accent); }
.auth-back-btn {
  background: none;
  border: none;
  color: var(--text2);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0;
  margin-bottom: 12px;
  display: block;
}
.auth-back-btn:hover { color: var(--accent); }

.auth-error {
  background: rgba(233,69,96,0.12);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 12px;
}
.auth-success {
  background: rgba(76,175,80,0.12);
  border: 1px solid var(--success);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--success);
  margin-bottom: 12px;
}
.auth-footer {
  color: var(--text2);
  font-size: 0.72rem;
  text-align: center;
  padding: 16px 0 8px;
  opacity: 0.6;
}

/* ── App layout ── */
#app { display: none; flex-direction: column; min-height: 100dvh; }
#app.visible { display: flex; }

header {
  background: var(--bg2);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.header-back {
  background: none; border: none; color: var(--text2);
  font-size: 1.4rem; cursor: pointer; padding: 4px 8px;
}

main { flex: 1; overflow-y: auto; }

/* ── Bottom nav ── */
nav.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  height: 64px;
  z-index: 200;
  padding-bottom: env(safe-area-inset-bottom);
}
.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text2);
  font-size: 0.6rem;
  cursor: pointer;
  gap: 3px;
  transition: color 0.2s;
  position: relative;
}
.nav-btn .icon { font-size: 1.4rem; }
.nav-btn.active { color: var(--accent); }
.nav-badge {
  position: absolute;
  top: 4px; right: calc(50% - 16px);
  background: var(--accent);
  color: white;
  font-size: 0.6rem;
  font-weight: 700;
  min-width: 16px; height: 16px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}

/* ── Pages ── */
.page { display: none; padding: 16px; }
.page.active { display: block; }

/* ── Cards & Lists ── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.card-title { font-weight: 600; font-size: 1rem; }
.card-sub { color: var(--text2); font-size: 0.85rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  text-decoration: none;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: white; }
.btn-secondary { background: var(--bg3); color: var(--text); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn:hover { opacity: 0.85; }
.btn-full { width: 100%; justify-content: center; }

.fab {
  position: fixed;
  bottom: 80px; right: 20px;
  width: 56px; height: 56px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.6rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(233,69,96,0.5);
  z-index: 150;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s;
}
.fab:active { transform: scale(0.92); }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  color: var(--text2);
  font-size: 0.85rem;
  font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 80px; }

.checkboxes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 6px;
}
.checkbox-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text2);
  cursor: pointer;
}
.checkbox-item input[type=checkbox] { accent-color: var(--accent); width: 18px; height: 18px; }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-red { background: rgba(233,69,96,0.2); color: var(--accent); border: 1px solid var(--accent); }
.badge-green { background: rgba(76,175,80,0.2); color: var(--success); border: 1px solid var(--success); }
.badge-orange { background: rgba(245,166,35,0.2); color: var(--accent2); border: 1px solid var(--accent2); }
.badge-blue { background: rgba(15,52,96,0.5); color: #7ecfff; border: 1px solid #2a5a8e; }

/* ── Tabs ── */
.tabs {
  display: flex;
  background: var(--bg2);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 20px;
  gap: 4px;
}
.tab-btn {
  flex: 1;
  padding: 10px 6px;
  background: none;
  border: none;
  color: var(--text2);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn.active {
  background: var(--accent);
  color: white;
}

/* ── Photo upload ── */
.photo-upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  color: var(--text2);
  cursor: pointer;
  transition: border-color 0.2s;
  margin-bottom: 16px;
}
.photo-upload-area:hover { border-color: var(--accent); }
.photo-upload-area img { max-width: 100%; max-height: 200px; border-radius: 8px; margin-top: 12px; }

/* ── Alert items ── */
.alert-item {
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
  border-left: 4px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.alert-item.unread { border-left-color: var(--accent); }
.alert-item.type-weekend { border-left-color: var(--accent2); }
.alert-item.type-SI_stock { border-left-color: #7ecfff; }
.alert-item .alert-icon { font-size: 1.4rem; margin-top: 2px; }
.alert-item .alert-body { flex: 1; }
.alert-item .alert-msg { font-size: 0.95rem; margin-bottom: 4px; }
.alert-item .alert-time { font-size: 0.75rem; color: var(--text2); }
.alert-item .alert-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text2);
}
.empty-state .emoji { font-size: 3rem; margin-bottom: 12px; }
.empty-state p { font-size: 0.95rem; }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 1000;
  display: flex;
  align-items: flex-end;
  padding: 0;
}
.modal {
  background: var(--bg2);
  border-radius: var(--radius) var(--radius) 0 0;
  width: 100%;
  max-height: 90dvh;
  overflow-y: auto;
  padding: 24px 20px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
  animation: slideUp 0.25s ease-out;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-title { font-size: 1.15rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text2); font-size: 1.4rem; cursor: pointer; }

/* ── SI toggle ── */
.si-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
}
.si-toggle label { cursor: pointer; font-weight: 500; }
.toggle-switch {
  position: relative; width: 44px; height: 24px;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--border); border-radius: 24px; cursor: pointer;
  transition: background 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 18px; height: 18px;
  background: white; border-radius: 50%;
  transition: transform 0.2s;
}
input:checked + .toggle-slider { background: var(--accent); }
input:checked + .toggle-slider::before { transform: translateX(20px); }

/* ── Ingredient row ── */
.ing-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.ing-row:last-child { border-bottom: none; }
.ing-name { flex: 1; font-size: 0.95rem; }
.ing-qty { color: var(--text2); font-size: 0.85rem; white-space: nowrap; }
.ing-actions { display: flex; gap: 4px; }

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ── */
#toast {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--card); color: var(--text);
  padding: 12px 20px; border-radius: 8px;
  box-shadow: var(--shadow);
  opacity: 0; transition: all 0.3s;
  z-index: 2000; white-space: nowrap;
  pointer-events: none;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.error { border-left: 4px solid var(--accent); }
#toast.success { border-left: 4px solid var(--success); }

/* ── Section title ── */
.section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text2);
  margin: 20px 0 10px;
  font-weight: 600;
}

/* ── Facturation ── */
.billing-tabs { margin-bottom: 20px; }
.billing-tab-btn { font-size: 0.8rem; }

#profil-form .form-group input,
#profil-form .form-group select,
#profil-form .form-group textarea {
  font-size: 0.9rem;
}

.heures-total-bar {
  background: var(--bg3);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-weight: 600;
}

.facture-card { border-left: 4px solid var(--border); }
.facture-card.payee { border-left-color: var(--success); }
.facture-card.envoyee { border-left-color: #7ecfff; }
.facture-card.brouillon { border-left-color: var(--text2); }

/* ── Responsive ── */
@media (min-width: 600px) {
  main { max-width: 600px; margin: 0 auto; }
  .modal-overlay { align-items: center; }
  .modal { border-radius: var(--radius); max-height: 80dvh; }
}