/* Cal.com inspired design */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --cal-bg: #f5f5f5;
  --cal-card: #ffffff;
  --cal-text: #111827;
  --cal-text-muted: #6b7280;
  --cal-border: #e5e7eb;
  --cal-accent: #111827;
  --cal-hover: #f3f4f6;
  --cal-success: #10B981;
  --cal-radius: 8px;
  --cal-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --cal-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--cal-bg);
  color: var(--cal-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Main Container */
.cal-container {
  display: grid;
  grid-template-columns: 300px 1fr;
  max-width: 1000px;
  margin: 2rem auto;
  background: var(--cal-card);
  border-radius: var(--cal-radius);
  box-shadow: var(--cal-shadow-md);
  border: 1px solid var(--cal-border);
  overflow: hidden;
  min-height: 600px;
}

/* Left Column: Event Info */
.event-info {
  padding: 2rem 1.5rem;
  border-right: 1px solid var(--cal-border);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--cal-accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.owner-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--cal-text-muted);
  margin-bottom: 0.25rem;
}

.event-type {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--cal-accent);
  margin-bottom: 0.5rem;
}

.event-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--cal-text-muted);
  font-size: 0.875rem;
}

.meta-item .icon {
  color: var(--cal-text-muted);
}

.event-description {
  font-size: 0.875rem;
  color: var(--cal-text-muted);
  line-height: 1.6;
  padding-top: 0.5rem;
  border-top: 1px solid var(--cal-border);
}

/* Right Column: Booking Area */
.booking-area {
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.booking-step {
  display: none;
}

.booking-step.active {
  display: block;
  animation: fadeIn 0.2s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Calendar */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.month-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--cal-accent);
}

.nav-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--cal-border);
  background: white;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--cal-text-muted);
}

.nav-btn:hover:not(:disabled) {
  background: var(--cal-hover);
  border-color: var(--cal-accent);
  color: var(--cal-accent);
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.25rem;
}

.day-label {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--cal-text-muted);
  padding: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s;
  position: relative;
}

.calendar-day.empty {
  cursor: default;
  opacity: 0;
}

.calendar-day.disabled {
  color: #d1d5db;
  cursor: not-allowed;
}

.calendar-day.available {
  font-weight: 700;
  color: var(--cal-accent);
}

.calendar-day.available:hover {
  background: var(--cal-hover);
}

.calendar-day.selected {
  background: var(--cal-accent);
  color: white;
  font-weight: 700;
}

/* Time Slots */
.back-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  margin-bottom: 1.5rem;
  border: none;
  background: none;
  color: var(--cal-text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: color 0.15s;
}

.back-btn:hover {
  color: var(--cal-accent);
}

.slots-container {
  display: grid;
  gap: 0.5rem;
  max-height: 450px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.slots-container::-webkit-scrollbar {
  width: 6px;
}

.slots-container::-webkit-scrollbar-track {
  background: transparent;
}

.slots-container::-webkit-scrollbar-thumb {
  background: var(--cal-border);
  border-radius: 3px;
}

.time-slot {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--cal-border);
  border-radius: 6px;
  background: white;
  cursor: pointer;
  transition: all 0.15s;
  font-weight: 500;
  text-align: center;
  font-size: 0.9375rem;
}

.time-slot:hover {
  border-color: var(--cal-accent);
  background: var(--cal-hover);
}

.time-slot.selected {
  background: var(--cal-success);
  border-color: var(--cal-success);
  color: white;
}

.time-slot.selected::after {
  content: " ✓ Confirm";
}

/* Booking Form */
.selected-slot-info {
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #166534;
}

.booking-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.form-field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cal-accent);
}

.form-field input,
.form-field textarea {
  padding: 0.75rem;
  border: 1.5px solid var(--cal-border);
  border-radius: 6px;
  font-size: 0.9375rem;
  font-family: inherit;
  transition: all 0.15s;
  background: white;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--cal-accent);
  box-shadow: 0 0 0 3px rgba(17, 24, 39, 0.05);
}

.form-field textarea {
  resize: vertical;
  min-height: 80px;
}

.submit-btn {
  padding: 0.875rem 1.5rem;
  background: var(--cal-accent);
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all 0.15s;
  margin-top: 0.5rem;
}

.submit-btn:hover:not(:disabled) {
  background: #1f2937;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Success */
.success-card {
  text-align: center;
  padding: 2rem 1rem;
}

.success-icon {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.success-card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--cal-accent);
  margin-bottom: 0.75rem;
}

.success-card p {
  color: var(--cal-text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.event-details {
  background: var(--cal-hover);
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: left;
}

.event-details strong {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--cal-accent);
  font-size: 1rem;
}

.event-details a {
  color: var(--cal-accent);
  text-decoration: none;
  font-weight: 500;
}

.event-details a:hover {
  text-decoration: underline;
}

/* Loading */
.loading {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(4px);
}

.loading.hidden {
  display: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--cal-border);
  border-top-color: var(--cal-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
  .cal-container {
    grid-template-columns: 1fr;
    margin: 0;
    border-radius: 0;
    min-height: 100vh;
  }

  .event-info {
    border-right: none;
    border-bottom: 1px solid var(--cal-border);
    padding: 1.5rem 1rem;
  }

  .booking-area {
    padding: 1.5rem 1rem;
  }

  .calendar-grid {
    gap: 0.125rem;
  }

  .calendar-day {
    font-size: 0.8125rem;
  }
}

@media (max-width: 480px) {
  .event-info {
    padding: 1rem;
  }

  .booking-area {
    padding: 1rem;
  }

  .avatar {
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
  }

  .event-type {
    font-size: 1.125rem;
  }
}