@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&family=Poppins:wght@500;600;700;800&display=swap');

:root {
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-secondary: #0ea5e9;
  --color-accent: #059669;
  --color-accent-hover: #047857;
  --color-background: #f0f9ff;
  --color-surface: #ffffff;
  --color-foreground: #0f172a;
  --color-muted: #eff7fb;
  --color-muted-foreground: #5b6b7a;
  --color-border: #e0f0f8;
  --color-destructive: #dc2626;
  --color-ring: #0284c7;

  --font-heading: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #38bdf8;
    --color-primary-hover: #0ea5e9;
    --color-secondary: #38bdf8;
    --color-accent: #10b981;
    --color-accent-hover: #34d399;
    --color-background: #0b1220;
    --color-surface: #111a2b;
    --color-foreground: #f1f5f9;
    --color-muted: #16213a;
    --color-muted-foreground: #93a3b8;
    --color-border: #223252;
    --color-destructive: #f87171;
    --color-ring: #38bdf8;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.45);
  }
}

:root[data-theme="dark"] {
  --color-primary: #38bdf8;
  --color-primary-hover: #0ea5e9;
  --color-secondary: #38bdf8;
  --color-accent: #10b981;
  --color-accent-hover: #34d399;
  --color-background: #0b1220;
  --color-surface: #111a2b;
  --color-foreground: #f1f5f9;
  --color-muted: #16213a;
  --color-muted-foreground: #93a3b8;
  --color-border: #223252;
  --color-destructive: #f87171;
  --color-ring: #38bdf8;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  padding: 24px 16px;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
}

a {
  color: var(--color-primary);
}

/* Card shell (booking page) */
.card {
  width: 100%;
  max-width: 600px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.card-narrow {
  max-width: 400px;
}

.card-wide {
  max-width: 960px;
}

.card h1 {
  margin: 0 0 8px;
  font-size: 22px;
  text-align: center;
}

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

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--color-muted-foreground);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.back-link:hover {
  color: var(--color-primary);
}

/* Hero (home page) */
.hero {
  width: 100%;
  max-width: 640px;
  text-align: center;
  padding: 16px;
}

.hero-eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-muted);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.15;
  margin: 0 0 16px;
}

.hero .subtitle {
  font-size: 16px;
  max-width: 480px;
  margin: 0 auto 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
  padding: 14px 32px;
  border: none;
  border-radius: 10px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 200ms ease, transform 150ms ease;
}

.btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.stats-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 40px;
}

.stat-card {
  flex: 1 1 140px;
  min-width: 140px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 18px 16px;
  box-shadow: var(--shadow-sm);
}

.stat-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: border-color 150ms ease, transform 150ms ease;
}

.stat-card-link:hover {
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--color-muted-foreground);
}

/* Form */
form {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

label {
  font-size: 13px;
  font-weight: 600;
  margin-top: 12px;
}

input,
textarea {
  font: inherit;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  color: var(--color-foreground);
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

input:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ring) 20%, transparent);
}

textarea {
  resize: vertical;
}

button {
  margin-top: 20px;
  padding: 13px;
  border: none;
  border-radius: 10px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 200ms ease;
}

button:hover {
  background: var(--color-accent-hover);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.link-btn {
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-primary);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
}

.status {
  min-height: 20px;
  margin: 14px 0 0;
  font-size: 14px;
  text-align: center;
}

.status.success {
  color: var(--color-accent);
}

.status.error {
  color: var(--color-destructive);
}

/* Calendar */
.calendar {
  max-width: 340px;
  margin: 0 auto 24px;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.calendar-header h3 {
  margin: 0;
  font-size: 15px;
}

.calendar-nav-btn {
  width: 32px;
  height: 32px;
  padding: 0;
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease;
}

.calendar-nav-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.calendar-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.calendar-weekdays,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-weekdays {
  margin-bottom: 4px;
}

.calendar-weekdays span {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-muted-foreground);
  text-transform: uppercase;
}

.calendar-day {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  background: none;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 150ms ease, background 150ms ease, color 150ms ease;
}

.calendar-day:hover:not(:disabled) {
  border-color: var(--color-primary);
}

.calendar-day.selected {
  background: var(--color-primary);
  color: #fff;
}

.calendar-day:disabled {
  color: var(--color-muted-foreground);
  opacity: 0.35;
  cursor: not-allowed;
}

.calendar-day-empty {
  visibility: hidden;
}

/* Time slot chips */
.slot-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.slot-btn {
  margin: 0;
  padding: 10px 16px;
  min-height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 150ms ease, background 150ms ease, color 150ms ease;
}

.slot-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.slot-btn.selected {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* Dashboard */
.dashboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.dashboard-header h1 {
  margin: 0;
  font-size: 22px;
  text-align: left;
}

.btn-secondary {
  margin: 0;
  padding: 9px 18px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-surface);
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-muted-foreground);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table tbody tr:hover {
  background: var(--color-muted);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-pending {
  background: var(--color-muted);
  color: var(--color-muted-foreground);
}

.badge-call_initiated {
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-primary);
}

.badge-confirmed {
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
}

.badge-declined,
.badge-call_failed {
  background: color-mix(in srgb, var(--color-destructive) 12%, transparent);
  color: var(--color-destructive);
}

@media (max-width: 480px) {
  .card {
    padding: 24px 20px;
  }

  .dashboard-header {
    flex-direction: column;
  }
}