:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-alt: #273549;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --danger: #f87171;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

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

/* --- Auth pages --- */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 380px;
}

.auth-card h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--text-muted);
  font-size: 14px;
}

label {
  display: block;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--text-muted);
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 16px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

input:focus {
  outline: none;
  border-color: var(--primary);
}

.btn-primary {
  width: 100%;
  padding: 11px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  padding: 11px 16px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--surface-alt);
}

.auth-switch {
  margin: 20px 0 0;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--primary);
  text-decoration: none;
}

.auth-switch a:hover {
  text-decoration: underline;
}

.error-message {
  color: var(--danger);
  font-size: 13px;
  min-height: 18px;
  margin-bottom: 8px;
}

/* --- Dashboard --- */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  font-weight: 700;
  font-size: 18px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-username {
  color: var(--text-muted);
  font-size: 14px;
  margin-right: 4px;
}

.btn-add {
  padding: 10px 16px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-add:hover {
  background: var(--primary-hover);
}

.dashboard-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px;
}

.dashboard-main h2 {
  margin: 0 0 20px;
  font-size: 20px;
}

.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.task-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.task-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.task-name {
  font-weight: 600;
  font-size: 15px;
}

.task-type-badge {
  font-size: 12px;
  color: var(--primary);
  background: rgba(59, 130, 246, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 100;
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 400px;
}

.modal h3 {
  margin: 0 0 20px;
  font-size: 18px;
}

select {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 16px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 4px;
}

.hidden {
  display: none;
}