/* ============================================================
   OceanRAG — contact.css
   合作聊聊 (Contact) Page Styles
   ============================================================ */

/* Hero */
.contact-hero {
  text-align: center;
  padding: 80px 0 40px;
}

.contact-hero h1 {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.contact-hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.contact-note {
  font-size: 0.95rem !important;
  color: var(--text-muted) !important;
  margin-top: 12px;
  font-style: italic;
}

/* Main Grid */
.contact-main {
  padding: 0 0 120px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 40px;
  align-items: start;
}

/* Left Column */
.contact-left {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Calendar Card */
.calendar-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

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

.cal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.cal-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.2s;
}

.cal-nav:hover {
  background: var(--accent-base);
  color: #fff;
  border-color: var(--accent-base);
}

/* Weekday Headers */
.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  margin-bottom: 8px;
}

.calendar-weekdays span {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 6px 0;
}

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

.cal-day {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
  color: var(--text-main);
  background: transparent;
}

.cal-day:hover:not(.past):not(.empty) {
  background: rgba(0, 77, 128, 0.08);
}

.cal-day.past {
  color: #cbd5e1;
  cursor: default;
  background: #f8fafc;
}

.cal-day.today {
  border-color: var(--accent-base);
  font-weight: 700;
}

.cal-day.selected {
  background: var(--accent-base);
  color: #fff;
  font-weight: 700;
  border-color: var(--accent-base);
}

.cal-day.empty {
  cursor: default;
}

/* Time Slot Card */
.timeslot-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 24px 28px;
  box-shadow: var(--shadow-md);
  animation: fadeSlideUp 0.3s ease-out;
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.timeslot-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.timeslot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.slot-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.slot-btn:hover {
  border-color: var(--accent-base);
  color: var(--accent-base);
  background: rgba(0, 77, 128, 0.04);
}

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

.slot-btn.booked {
  opacity: 0.45;
  cursor: not-allowed;
  text-decoration: line-through;
  background: #f1f5f9;
  color: #94a3b8;
  border-color: #e2e8f0;
  font-size: 12px;
}

.slot-btn.booked:hover {
  border-color: #e2e8f0;
  color: #94a3b8;
  background: #f1f5f9;
}

.slot-btn.loading {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  color: transparent;
  cursor: wait;
  border-color: #e2e8f0;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Right Column: Form Card */
.form-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.form-title i {
  color: var(--accent-base);
  font-size: 1.2rem;
}

/* Selected Datetime Badge */
.selected-datetime {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 77, 128, 0.06);
  border: 1px solid rgba(0, 77, 128, 0.15);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-base);
  animation: fadeSlideUp 0.3s ease-out;
}

.selected-datetime i {
  font-size: 16px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.required {
  color: var(--accent-danger);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  font-size: 14px;
  font-family: var(--font-family);
  color: var(--text-main);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-base);
  box-shadow: 0 0 0 3px rgba(0, 77, 128, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #94a3b8;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Validation Error State */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: var(--accent-danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-group .error-msg {
  display: none;
  font-size: 12px;
  color: var(--accent-danger);
  margin-top: 6px;
  font-weight: 500;
}

.form-group.error .error-msg {
  display: block;
}

/* Submit Button */
.btn-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 30px;
  background: var(--accent-base);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-family);
  cursor: pointer;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: transform 0.2s, box-shadow 0.2s;
  margin-top: 8px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-submit:active {
  transform: translateY(0);
}

/* Submit Notice */
.submit-notice {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(5, 150, 105, 0.08);
  border: 1px solid rgba(5, 150, 105, 0.2);
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 20px;
  animation: fadeSlideUp 0.3s ease-out;
}

.submit-notice i {
  color: var(--accent-success);
  font-size: 20px;
  flex-shrink: 0;
}

.submit-notice p {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-success);
  margin: 0;
}

.submit-notice.error {
  background: rgba(220, 38, 38, 0.08);
  border-color: rgba(220, 38, 38, 0.2);
}

.submit-notice.error i,
.submit-notice.error p {
  color: var(--accent-danger);
}

.submit-notice.success {
  background: rgba(5, 150, 105, 0.08);
  border-color: rgba(5, 150, 105, 0.2);
}

.submit-notice.success i,
.submit-notice.success p {
  color: var(--accent-success);
}

/* Submit button disabled state */
.btn-submit:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .contact-hero h1 {
    font-size: 2.5rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-left {
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }

  .form-card {
    padding: 32px 24px;
  }
}

@media (max-width: 480px) {
  .contact-hero {
    padding: 60px 0 24px;
  }

  .contact-hero h1 {
    font-size: 2rem;
  }

  .contact-hero p {
    font-size: 1rem;
  }

  .calendar-card {
    padding: 20px;
  }

  .cal-day {
    font-size: 13px;
    border-radius: 8px;
  }

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

  .slot-btn {
    padding: 8px 12px;
    font-size: 13px;
  }

  .form-card {
    padding: 24px 16px;
  }

  .form-title {
    font-size: 1.25rem;
    margin-bottom: 24px;
  }

  .btn-submit {
    font-size: 0.95rem;
    padding: 14px;
  }
}