:root {
  --bg-body: #f5f7fb;
  --bg-card: #ffffff;
  --bg-accent-soft: #e0edff;
  --border-subtle: #e2e8f0;
  --text-main: #111827;
  --text-muted: #6b7280;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --accent-strong: #1d4ed8;
  --danger: #ef4444;
  --danger-soft: #fee2e2;
  --success: #16a34a;
  --success-soft: #dcfce7;
  --shadow-soft: 0 12px 25px rgba(15, 23, 42, 0.08);
  --radius-lg: 18px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at top left, #e0f2fe 0, #f5f7fb 35%, #f5f7fb 100%);
  color: var(--text-main);
}

/* Layout umum */

.layout {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(248, 250, 252, 0.9);
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.75rem;
}

.topbar-title {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: #0f172a;
}

.topbar-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-left: 1rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
}

.topbar-nav a:hover {
  background: rgba(148, 163, 184, 0.12);
  color: #0f172a;
}

.topbar-nav a.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-color: rgba(37, 99, 235, 0.3);
}

/* Container & cards */

.container {
  max-width: 1120px;
  margin: 1.5rem auto 2.5rem;
  padding: 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-subtle);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: 1rem;
}

.card h2 {
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
}

.muted {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Buttons */

.btn {
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  padding: 0.45rem 1.15rem;
  font-size: 0.9rem;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
}

.btn.primary {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #f9fafb;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.35);
}

.btn.primary:hover {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.btn.ghost {
  border-color: #cbd5f5;
  color: #1d4ed8;
  background: #eff6ff;
}

.btn.ghost:hover {
  background: #e0edff;
}

.btn-full {
  width: 100%;
}

/* Alerts */

.alert {
  border-radius: var(--radius-md);
  padding: 0.6rem 0.9rem;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.alert.success {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid #4ade80;
}

.alert.error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid #fecaca;
}

/* Calendar */

.calendar-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.calendar-month {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  background: #e5edff;
  color: #1e40af;
  font-weight: 600;
  font-size: 0.9rem;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.4rem;
  margin-top: 1rem;
}

.calendar-header {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
}

.calendar-cell {
  min-height: 88px;
  background: #f8fafc;
  border-radius: 14px;
  padding: 0.45rem;
  border: 1px dashed rgba(148, 163, 184, 0.5);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: transform 0.1s ease, box-shadow 0.1s ease, border-color 0.1s ease, background 0.1s ease;
  cursor: pointer;
}

.calendar-cell.empty {
  background: transparent;
  border-style: dotted;
  cursor: default;
}

.calendar-cell:hover:not(.empty) {
  transform: translateY(-1px);
  box-shadow: 0 9px 18px rgba(15, 23, 42, 0.14);
  border-color: #cbd5f5;
  background: #f1f5f9;
}

.calendar-day-number {
  font-size: 0.8rem;
  font-weight: 600;
  color: #0f172a;
}

.calendar-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  border-radius: 999px;
  padding: 0.1rem 0.45rem 0.1rem 0.2rem;
  font-size: 0.75rem;
  background: rgba(59, 130, 246, 0.06);
  color: #1f2937;
}

.calendar-item .badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  font-size: 0.7rem;
  background: #3b82f6;
  color: #eff6ff;
}

.calendar-item .title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* Form */

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-grid label span {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: #374151;
}

input[type="text"],
input[type="password"],
input[type="url"],
input[type="date"],
input[type="time"],
input[type="number"],
textarea,
input[type="file"],
input[type="email"] {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid #d1d5db;
  padding: 0.55rem 0.7rem;
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  background: #f9fafb;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

input:focus,
textarea:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.25);
  background: #ffffff;
}

textarea {
  resize: vertical;
}

.inline-row {
  display: flex;
  gap: 0.75rem;
}

.inline-row input {
  flex: 1;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  border: 1px solid #d1d5db;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  background: #f9fafb;
  cursor: pointer;
}

.chip input {
  accent-color: var(--accent);
}

.chip-disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.segmented {
  display: inline-flex;
  padding: 0.15rem;
  border-radius: 999px;
  background: #edf2ff;
  border: 1px solid #c7d2fe;
}

.segmented > label {
  font-size: 0.8rem;
  padding: 0.2rem 0.8rem;
  border-radius: 999px;
  cursor: pointer;
  color: #4b5563;
}

.segmented > label input {
  display: none;
}

.segmented > label input:checked + span,
.segmented > label:has(input:checked) {
  background: #ffffff;
  color: #1d4ed8;
  box-shadow: 0 4px 10px rgba(59, 130, 246, 0.25);
}

.segmented > label span {
  display: inline-block;
}

.form-actions {
  margin-top: 0.25rem;
}

/* Debug box */

.debug-box {
  background: #0b1120;
  color: #e5e7eb;
  padding: 0.75rem;
  border-radius: 0.75rem;
  font-size: 0.8rem;
  overflow-x: auto;
}

/* Auth page */

.auth-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #e0f2fe 0, #f5f7fb 50%, #e5e7eb 100%);
}

.auth-wrapper {
  width: 100%;
  max-width: 420px;
  padding: 1.5rem;
}

.auth-card {
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.18);
  padding: 1.75rem 1.9rem 1.5rem;
  border: 1px solid #e5e7eb;
}

.auth-title {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.auth-subtitle {
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.auth-form {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 0.75rem;
}

.auth-form label span {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  display: block;
}

.auth-hint {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Utils */

.hidden {
  display: none;
}

small {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Responsive */

@media (max-width: 768px) {
  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .calendar-grid {
    gap: 0.3rem;
  }

  .calendar-cell {
    min-height: 76px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .container {
    margin-top: 1rem;
  }
}