:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-2: #232736;
  --text: #e6e8ef;
  --muted: #8b90a1;
  --accent: #6c9ef8;
  --accent-dark: #4a7de0;
  --danger: #e06c75;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--surface-2);
}

.brand { font-weight: 700; }

.topbar nav { display: flex; gap: 1rem; flex: 1; }

.topbar a {
  color: var(--muted);
  text-decoration: none;
}

.topbar a:hover { color: var(--text); }

.logout-form { margin: 0; }

.container {
  max-width: 1100px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* ── Login ─────────────────────────────────── */

.login-box {
  max-width: 360px;
  margin: 10vh auto;
  padding: 2rem;
  background: var(--surface);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
}

.login-box h1 { margin-top: 0; text-align: center; }

.login-box form { display: flex; flex-direction: column; gap: 0.5rem; }

.login-box label { color: var(--muted); font-size: 0.875rem; }

.login-box input {
  padding: 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--surface-2);
  background: var(--bg);
  color: var(--text);
}

.error {
  color: var(--danger);
  text-align: center;
}

/* ── Boutons ───────────────────────────────── */

.btn-primary {
  margin-top: 1rem;
  padding: 0.6rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: #0b0d12;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary:hover { background: var(--accent-dark); color: var(--text); }

.btn-ghost {
  background: none;
  border: 1px solid var(--surface-2);
  border-radius: 6px;
  color: var(--muted);
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}

.btn-ghost:hover { color: var(--text); border-color: var(--muted); }

/* ── Navigation jour/semaine ───────────────── */

.day-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.day-nav h1 { font-size: 1.4rem; margin: 0; text-align: center; }

.nav-arrow {
  font-size: 1.5rem;
  color: var(--muted);
  text-decoration: none;
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
}

.nav-arrow:hover { color: var(--text); background: var(--surface); }

.badge {
  font-size: 0.7rem;
  vertical-align: middle;
  background: var(--accent);
  color: #0b0d12;
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  margin-left: 0.5rem;
}

/* ── Tâches ────────────────────────────────── */

.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.task {
  display: flex;
  align-items: center;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}

.task label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  cursor: pointer;
}

.task input[type="checkbox"] {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--accent);
}

.task.done .task-label {
  text-decoration: line-through;
  color: var(--muted);
}

.empty {
  color: var(--muted);
  padding: 1rem;
  text-align: center;
}

.empty a { color: var(--accent); }

.delete-task {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0 0.3rem;
}

.delete-task:hover { color: var(--danger); }

/* ── Vue semaine ───────────────────────────── */

.week-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.day-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
  border: 1px solid transparent;
}

.day-card.today { border-color: var(--accent); }

.day-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
}

.day-card h2 a { color: var(--text); text-decoration: none; }

.day-card h2 a:hover { color: var(--accent); }

.day-card .date { color: var(--muted); font-weight: 400; }

.task-list.compact .task {
  background: var(--surface-2);
  padding: 0.5rem 0.75rem;
}

.add-task-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.add-task-form input {
  flex: 1;
  padding: 0.45rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--surface-2);
  background: var(--bg);
  color: var(--text);
  min-width: 0;
}