/* ==========================================================================
   TUKU Booking System Styles
   Following TUKU design system: JetBrains Mono, blue accents, minimal UI
   ========================================================================== */

/* CSS Custom Properties */
:root {
  --color-black: #000000;
  --color-white: #FFFFFF;
  --color-gold: #C19A4B;
  --color-blue-light: #f0f9ff;
  --color-blue-medium: #e0f2fe;
  --color-blue-accent: #5691c8;
  --color-blue-deep: #4a7ba7;
  --color-grey: #666666;
  --color-grey-light: #999999;
  --color-error: #C19A4B;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  min-height: 100vh;
}

/* Cloud Background */
#cloud-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Page Container */
.page {
  max-width: 600px;
  margin: 0 auto;
  padding: 60px 20px 40px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Step Sections */
.step {
  display: none;
  flex: 1;
}

.step.active {
  display: block;
}

.step-content {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Typography */
h1 {
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.subhead {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-grey);
  margin-bottom: 32px;
}

/* Back Link */
.back-link {
  display: inline-block;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--color-blue-accent);
  cursor: pointer;
  margin-bottom: 24px;
  padding: 0;
  transition: color 0.2s ease;
}

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

/* Buttons */
.btn-primary {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-white);
  background-color: var(--color-blue-accent);
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-align: center;
  text-decoration: none;
}

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

.btn-primary:disabled {
  background-color: var(--color-grey-light);
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-blue-accent);
  background-color: transparent;
  border: 1px solid var(--color-blue-accent);
  border-radius: 0;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  text-decoration: none;
  margin-bottom: 12px;
}

.btn-secondary:hover {
  background-color: var(--color-blue-light);
}

.btn-cancel {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-grey);
  background-color: transparent;
  border: 1px solid var(--color-grey-light);
  border-radius: 0;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  margin-top: 12px;
}

.btn-cancel:hover {
  border-color: var(--color-error);
  color: var(--color-error);
}

.meet-note {
  text-align: center;
  padding: 16px;
  margin-bottom: 12px;
  font-size: 0.875rem;
  color: var(--color-grey);
  background-color: var(--color-blue-light);
  border-radius: 4px;
}

.cancel-note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-grey);
  margin-top: 16px;
}

.link-home {
  display: block;
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--color-blue-accent);
  text-decoration: none;
}

.link-home:hover {
  color: var(--color-blue-deep);
}

/* Calendar */
#calendar-container {
  margin-bottom: 24px;
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.calendar-header span {
  font-size: 1rem;
  font-weight: 500;
}

.calendar-nav {
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.25rem;
  color: var(--color-blue-accent);
  cursor: pointer;
  padding: 8px 12px;
  transition: color 0.2s ease;
}

.calendar-nav:hover {
  color: var(--color-blue-deep);
}

.calendar-nav:disabled {
  color: var(--color-grey-light);
  cursor: not-allowed;
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 8px;
}

.calendar-weekdays span {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-grey-light);
  padding: 8px 0;
}

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

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  background: none;
  border: 1px solid transparent;
  cursor: default;
  transition: all 0.2s ease;
  font-family: inherit;
}

.calendar-day.available {
  cursor: pointer;
  border-color: var(--color-blue-accent);
  color: var(--color-blue-accent);
}

.calendar-day.available:hover {
  background-color: var(--color-blue-light);
}

.calendar-day.selected {
  background-color: var(--color-blue-accent);
  color: var(--color-white);
  border-color: var(--color-blue-accent);
}

.calendar-day.unavailable {
  color: var(--color-grey-light);
}

.calendar-day.other-month {
  color: var(--color-grey-light);
  opacity: 0.5;
}

/* Time Slots */
.date-context {
  font-size: 0.875rem;
  color: var(--color-grey);
  margin-bottom: 20px;
}

.time-slots {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.time-slot {
  padding: 12px 16px;
  font-family: inherit;
  font-size: 0.875rem;
  background: none;
  border: 1px solid var(--color-blue-accent);
  color: var(--color-blue-accent);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.time-slot:hover {
  background-color: var(--color-blue-light);
}

.time-slot.selected {
  background-color: var(--color-blue-accent);
  color: var(--color-white);
}

/* Form */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-black);
}

.form-group label .optional {
  font-weight: 400;
  color: var(--color-grey-light);
}

.form-group label .required {
  color: var(--color-error);
  font-weight: 400;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-grey-light);
  background-color: var(--color-white);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-blue-accent);
  background-color: var(--color-blue-light);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

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

.field-error {
  display: block;
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 4px;
  min-height: 1.2em;
}

.privacy-note {
  display: block;
  font-size: 0.75rem;
  color: var(--color-grey-light);
  margin-top: 6px;
  font-style: italic;
}

/* Booking Summary */
.booking-summary {
  background-color: var(--color-blue-light);
  padding: 20px;
  margin-bottom: 24px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-label {
  font-size: 0.875rem;
  color: var(--color-grey);
}

.summary-value {
  font-size: 0.875rem;
  font-weight: 500;
  text-align: right;
}

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

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

.confirm-note {
  font-size: 0.875rem;
  color: var(--color-grey);
  margin-bottom: 24px;
}

/* Success */
.success-icon {
  width: 60px;
  height: 60px;
  background-color: var(--color-blue-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 24px;
}

.success-message {
  text-align: center;
  margin-bottom: 24px;
}

.booking-details {
  text-align: center;
  background-color: var(--color-blue-light);
  padding: 20px;
  margin-bottom: 24px;
}

.booking-details p {
  margin: 4px 0;
}

/* Manage */
#manage-actions {
  margin-top: 24px;
}

.past-note {
  text-align: center;
  color: var(--color-grey);
  font-style: italic;
}

/* Error & Loading */
.error-message {
  color: var(--color-error);
  font-size: 0.875rem;
  padding: 12px;
  background-color: rgba(193, 154, 75, 0.1);
  margin-top: 16px;
}

.loading {
  text-align: center;
  color: var(--color-grey);
  padding: 40px 0;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

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

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

/* Footer */
.footer {
  margin-top: auto;
  padding-top: 60px;
  text-align: center;
}

.footer p {
  font-size: 0.75rem;
  color: var(--color-grey-light);
}

/* Responsive */
@media (max-width: 768px) {
  .page {
    padding: 40px 16px 30px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .time-slots {
    grid-template-columns: 1fr;
  }

  .calendar-day {
    font-size: 0.8rem;
  }
}