@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Variables ───────────────────────────────────────── */
:root {
  --bg:          #0b0d12;
  --surface:     #12151f;
  --surface2:    #181c2a;
  --border:      #1e2336;
  --border2:     #252d45;
  --accent:      #6c63ff;
  --accent2:     #a78bfa;
  --accent-glow: rgba(108,99,255,0.18);
  --success:     #10b981;
  --success-glow:rgba(16,185,129,0.15);
  --danger:      #ef4444;
  --danger-glow: rgba(239,68,68,0.15);
  --warning:     #f59e0b;
  --text:        #e2e8f0;
  --muted:       #64748b;
  --faint:       #374151;
  --radius:      14px;
  --radius-sm:   8px;
  --font:        'Inter', system-ui, sans-serif;
}

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

/* ── Body ────────────────────────────────────────────── */
html, body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}
body {
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -5%,  rgba(108,99,255,0.13), transparent),
    radial-gradient(ellipse 50% 40% at 90% 100%, rgba(167,139,250,0.07), transparent);
  background-attachment: fixed;
}

/* ── Topbar (navigation principale) ─────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,13,18,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 56px;
  display: flex; align-items: center;
  padding: 0 28px; gap: 8px;
}
.topbar-brand {
  font-weight: 700; font-size: 1rem;
  color: var(--text); text-decoration: none;
  display: flex; align-items: center; gap: 8px;
  letter-spacing: -.3px; flex-shrink: 0; margin-right: 12px;
}
.topbar-brand .brand-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff;
  box-shadow: 0 0 14px rgba(108,99,255,0.45);
}
.topbar-brand .brand-label span { color: var(--accent2); }
.topbar-nav {
  display: flex; align-items: center; gap: 2px; flex: 1;
}
.topbar-nav a {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 13px; border-radius: var(--radius-sm);
  color: var(--muted); text-decoration: none;
  font-size: 0.85rem; font-weight: 500;
  transition: background .15s, color .15s;
}
.topbar-nav a i { font-size: 12px; }
.topbar-nav a:hover, .topbar-nav a.active {
  background: rgba(108,99,255,0.1); color: var(--accent2);
}
.topbar-right {
  margin-left: auto; display: flex; align-items: center;
  gap: 14px; flex-shrink: 0;
}
.topbar-right .who { font-size: 0.82rem; color: var(--muted); }
.topbar-right .who strong { color: var(--text); font-weight: 600; }
.topbar-right a.logout {
  display: flex; align-items: center; gap: 6px;
  color: var(--danger); font-size: 0.82rem; font-weight: 600;
  text-decoration: none; padding: 5px 10px;
  border-radius: 7px; border: 1px solid rgba(239,68,68,0.2);
  transition: background .15s, border-color .15s;
}
.topbar-right a.logout:hover {
  background: var(--danger-glow); border-color: rgba(239,68,68,0.4);
}
.topbar-right a.topbar-link {
  display: flex; align-items: center; gap: 6px;
  color: var(--accent2); font-size: 0.82rem; font-weight: 500;
  text-decoration: none; padding: 5px 10px;
  border-radius: 7px; border: 1px solid rgba(108,99,255,0.2);
  transition: background .15s;
}
.topbar-right a.topbar-link:hover { background: var(--accent-glow); }

/* ── Auth page (pages centrées : login, register…) ─── */
.auth-page {
  min-height: calc(100vh - 56px);
  display: flex; align-items: center; justify-content: center;
  padding: 32px 20px;
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 44px 38px;
  max-width: 440px; width: 100%;
  animation: fadeUp 0.35s ease;
  box-shadow: 0 0 60px rgba(108,99,255,0.1), 0 20px 60px rgba(0,0,0,0.4);
}
@keyframes fadeUp {
  from { opacity:0; transform: translateY(20px); }
  to   { opacity:1; transform: translateY(0); }
}
.auth-brand {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 28px; justify-content: center;
}
.auth-brand .brand-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; color: #fff;
  box-shadow: 0 0 18px rgba(108,99,255,0.4);
}
.auth-brand .brand-name {
  font-size: 1.1rem; font-weight: 700; color: var(--text);
}
.auth-brand .brand-name span { color: var(--accent2); }
.auth-card h1 {
  font-size: 1.35rem; font-weight: 700;
  text-align: center; margin-bottom: 6px; color: var(--text);
}
.auth-card .subtitle {
  text-align: center; color: var(--muted);
  font-size: 0.85rem; margin-bottom: 28px;
}
.auth-footer {
  margin-top: 22px; text-align: center;
  font-size: 0.82rem; color: var(--muted);
}
.auth-footer a { color: var(--accent2); text-decoration: none; }
.auth-footer a:hover { text-decoration: underline; }

/* ── Formulaires ─────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 0.75rem; font-weight: 600;
  color: var(--muted); letter-spacing: .4px;
  text-transform: uppercase; margin-bottom: 6px;
}
.form-group .field-error {
  font-size: 0.75rem; color: var(--danger);
  margin-top: 4px; min-height: 16px;
}
.field-hint {
  font-size: 0.75rem; color: var(--muted); margin-top: 4px;
}

/* Inputs */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select, textarea {
  width: 100%; padding: 10px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border2);
  background: rgba(0,0,0,0.3);
  color: var(--text); font-size: 0.9rem;
  font-family: var(--font);
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.18);
}
input::placeholder { color: var(--faint); }
input.invalid { border-color: var(--danger) !important; }
select option { background: var(--surface); color: var(--text); }

/* Strength bar */
.strength-bar {
  margin-top: 5px; height: 3px;
  border-radius: 2px; background: rgba(255,255,255,0.05);
  overflow: hidden;
}
.strength-bar-fill {
  height: 100%; width: 0; border-radius: 2px;
  transition: width 0.3s, background 0.3s;
}

/* Checkbox */
.checkbox-group {
  display: flex; align-items: flex-start; gap: 10px;
  margin: 18px 0; cursor: pointer; user-select: none;
}
.checkbox-group input[type="checkbox"] {
  width: auto; margin-top: 2px; cursor: pointer;
  accent-color: var(--accent);
}
.checkbox-group label {
  text-transform: none; font-size: 0.83rem;
  color: var(--text); font-weight: 400;
  letter-spacing: normal; margin-bottom: 0;
  cursor: pointer; line-height: 1.45;
}
.checkbox-group a { color: var(--accent2); text-decoration: none; }
.checkbox-group a:hover { text-decoration: underline; }

/* ── Boutons ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 7px; padding: 10px 20px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.9rem; font-family: var(--font);
  cursor: pointer; border: none; text-decoration: none;
  transition: transform .1s, box-shadow .15s, background .15s;
  white-space: nowrap; letter-spacing: -.1px; position: relative;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none !important; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; box-shadow: 0 4px 18px rgba(108,99,255,0.3);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 6px 24px rgba(108,99,255,0.5);
  transform: translateY(-1px);
}
.btn-block { width: 100%; }
.btn-success  { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.1); }
.btn-danger   {
  background: rgba(239,68,68,0.15); color: var(--danger);
  border: 1px solid rgba(239,68,68,0.25);
}
.btn-danger:hover { background: rgba(239,68,68,0.25); }
.btn-ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border2);
}
.btn-ghost:hover { background: var(--surface2); color: var(--text); }
.btn-sm  { padding: 6px 13px; font-size: 0.82rem; }
.btn-xs  { padding: 3px 9px;  font-size: 0.75rem; border-radius: 6px; gap: 4px; }

/* Spinner inline dans bouton */
.btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff; border-radius: 50%;
  animation: spin .7s linear infinite;
  display: none; position: absolute; right: 14px; top: 50%;
  transform: translateY(-50%);
}
.btn-spinner.show { display: block; }
@keyframes spin { to { transform: translateY(-50%) rotate(360deg); } }

/* Spinner standalone */
.spinner-wrap {
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.spinner {
  width: 36px; height: 36px;
  border: 3px solid rgba(108,99,255,0.2);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin2 .8s linear infinite;
}
@keyframes spin2 { to { transform: rotate(360deg); } }

/* ── Alertes ─────────────────────────────────────────── */
.alert {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 15px; border-radius: var(--radius-sm);
  font-size: 0.85rem; line-height: 1.5; margin-bottom: 18px;
}
.alert-error {
  background: var(--danger-glow); color: var(--danger);
  border: 1px solid rgba(239,68,68,0.2);
}
.alert-success {
  background: var(--success-glow); color: var(--success);
  border: 1px solid rgba(16,185,129,0.2);
}
.alert.hidden { display: none !important; }

/* ── Badges ──────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 9px; border-radius: 999px;
  font-size: 0.72rem; font-weight: 600; white-space: nowrap;
}
.badge-accent  { background: rgba(108,99,255,0.15); color: var(--accent2); border: 1px solid rgba(108,99,255,0.25); }
.badge-success { background: var(--success-glow);  color: var(--success);  border: 1px solid rgba(16,185,129,0.2); }
.badge-danger  { background: var(--danger-glow);   color: var(--danger);   border: 1px solid rgba(239,68,68,0.2); }
.badge-warning { background: rgba(245,158,11,0.12); color: var(--warning);  border: 1px solid rgba(245,158,11,0.2); }
.badge-muted   { background: rgba(100,116,139,0.1); color: var(--muted);    border: 1px solid rgba(100,116,139,0.15); }

/* ── Overlay (chargement plein écran) ────────────────── */
.overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.75); z-index: 9999;
  justify-content: center; align-items: center;
  flex-direction: column; gap: 16px;
}
.overlay.show { display: flex; }
.overlay .overlay-spinner {
  width: 48px; height: 48px;
  border: 4px solid rgba(108,99,255,0.2);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin2 .8s linear infinite;
}

/* ── Footer ──────────────────────────────────────────── */
footer {
  text-align: center; padding: 24px 20px;
  color: var(--faint); font-size: 0.8rem;
  border-top: 1px solid var(--border);
}
footer .brand { color: var(--accent2); font-weight: 600; }
footer a { color: var(--faint); text-decoration: none; }
footer a:hover { color: var(--muted); }

/* ── Liens généraux ──────────────────────────────────── */
a { color: var(--accent2); }
a:hover { text-decoration: underline; }

/* ── Scrollbar ───────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--faint); border-radius: 99px; }

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 600px) {
  .auth-card { padding: 32px 22px; }
  .topbar { padding: 0 16px; }
  .topbar-nav a span { display: none; }
}