/* ==============================================================================
   Office Hours Booking System - Stylesheet
   Designed to blend seamlessly with yunusserhat.com (Wowchemy Academic Minimal)
   Supports Light Mode & Dark Mode (.dark), Glassmorphic cards, Responsive UI
   ============================================================================== */

:root {
  --oh-primary: #1565c0;
  --oh-primary-hover: #0d47a1;
  --oh-primary-light: rgba(21, 101, 192, 0.08);
  --oh-primary-border: rgba(21, 101, 192, 0.25);
  --oh-success: #2e7d32;
  --oh-success-light: rgba(46, 125, 50, 0.1);
  --oh-danger: #c62828;
  --oh-danger-light: rgba(198, 40, 40, 0.1);
  --oh-warning: #f57f17;
  --oh-warning-light: rgba(245, 127, 23, 0.1);
  --oh-card-bg: #ffffff;
  --oh-card-border: rgba(0, 0, 0, 0.08);
  --oh-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.03);
  --oh-text: #2b2b2b;
  --oh-text-muted: #666666;
  --oh-slot-bg: #f8f9fa;
  --oh-slot-hover: #e3f2fd;
  --oh-input-bg: #ffffff;
  --oh-input-border: #ced4da;
  --oh-modal-backdrop: rgba(0, 0, 0, 0.55);
}

/* Dark Theme overrides when Wowchemy body has .dark */
body.dark {
  --oh-primary: #42a5f5;
  --oh-primary-hover: #90caf9;
  --oh-primary-light: rgba(66, 165, 245, 0.15);
  --oh-primary-border: rgba(66, 165, 245, 0.35);
  --oh-card-bg: #1e2430;
  --oh-card-border: rgba(255, 255, 255, 0.1);
  --oh-card-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --oh-text: #e0e6ed;
  --oh-text-muted: #9ba7b6;
  --oh-slot-bg: #272f3d;
  --oh-slot-hover: #313d50;
  --oh-input-bg: #161b22;
  --oh-input-border: #3b4454;
  --oh-modal-backdrop: rgba(0, 0, 0, 0.75);
}

/* Wrapper & Global Layout */
.officehours-wrapper {
  font-family: inherit;
  color: var(--oh-text);
  min-height: 70vh;
}

/* Glassmorphic & Modern Cards */
.oh-card {
  background: var(--oh-card-bg);
  border: 1px solid var(--oh-card-border);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: var(--oh-card-shadow);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.oh-header-card {
  background: linear-gradient(135deg, var(--oh-card-bg) 0%, var(--oh-primary-light) 100%);
  border-top: 4px solid var(--oh-primary);
}

.oh-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.oh-subtitle {
  font-size: 1.05rem;
  font-weight: 500;
}

.oh-lead {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  color: var(--oh-text-muted);
}

/* Badges & Chips */
.oh-badge-chip {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: var(--oh-primary-light);
  color: var(--oh-primary);
  border: 1px solid var(--oh-primary-border);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.oh-domain-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--oh-primary-light);
  color: var(--oh-primary);
  border: 1px solid var(--oh-primary-border);
}

/* Step Indicators & Icons */
.oh-step-indicator {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--oh-primary-light);
  color: var(--oh-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

/* Form Controls & Inputs */
.form-control, .form-select {
  background-color: var(--oh-input-bg) !important;
  color: var(--oh-text) !important;
  border-color: var(--oh-input-border) !important;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus, .form-select:focus {
  border-color: var(--oh-primary) !important;
  box-shadow: 0 0 0 0.25rem var(--oh-primary-light) !important;
}

.input-group-text {
  background-color: var(--oh-slot-bg);
  border-color: var(--oh-input-border);
  color: var(--oh-text-muted);
  border-radius: 8px 0 0 8px;
}

.oh-otp-input {
  letter-spacing: 0.4em;
  font-size: 1.75rem;
  font-weight: 700;
  max-width: 260px;
}

/* Buttons */
.btn-primary {
  background-color: var(--oh-primary) !important;
  border-color: var(--oh-primary) !important;
  color: #ffffff !important;
  font-weight: 600;
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  transition: all 0.2s ease;
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--oh-primary-hover) !important;
  border-color: var(--oh-primary-hover) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--oh-primary-light);
}

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

.btn-outline-primary {
  color: var(--oh-primary) !important;
  border-color: var(--oh-primary) !important;
  font-weight: 600;
  border-radius: 8px;
}

.btn-outline-primary:hover {
  background-color: var(--oh-primary) !important;
  color: #ffffff !important;
}

/* Status Bar & User Info */
.oh-status-bar {
  padding: 1rem 1.5rem;
  background: var(--oh-card-bg);
  border-left: 4px solid var(--oh-primary);
}

.oh-avatar-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--oh-success);
  display: inline-block;
  box-shadow: 0 0 0 3px var(--oh-success-light);
}

/* Active Booking Banner */
.oh-active-booking {
  border-left: 4px solid var(--oh-success);
  background: linear-gradient(135deg, var(--oh-card-bg) 0%, var(--oh-success-light) 100%);
}

/* Slot List & Time Grid */
.oh-date-group {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--oh-card-border);
}

.oh-date-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.oh-date-heading {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
}

.oh-slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

/* Slot Pill Button */
.oh-slot-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 0.5rem;
  border-radius: 8px;
  background: var(--oh-slot-bg);
  border: 1px solid var(--oh-card-border);
  color: var(--oh-text);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease-in-out;
  text-decoration: none;
  user-select: none;
}

.oh-slot-btn .oh-slot-time {
  font-size: 1rem;
  font-weight: 700;
}

.oh-slot-btn .oh-slot-status {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 0.2rem;
  font-weight: 600;
}

/* Slot States */
.oh-slot-btn.oh-slot-available {
  border-color: var(--oh-primary-border);
  color: var(--oh-primary);
}

.oh-slot-btn.oh-slot-available:hover {
  background: var(--oh-primary);
  color: #ffffff;
  border-color: var(--oh-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--oh-primary-light);
}

.oh-slot-btn.oh-slot-available:hover .oh-slot-status {
  color: #ffffff;
}

.oh-slot-btn.oh-slot-available .oh-slot-status {
  color: var(--oh-success);
}

.oh-slot-btn.oh-slot-booked {
  opacity: 0.5;
  background: var(--oh-slot-bg);
  color: var(--oh-text-muted);
  cursor: not-allowed;
  text-decoration: line-through;
}

.oh-slot-btn.oh-slot-booked .oh-slot-status {
  color: var(--oh-danger);
  text-decoration: none;
}

.oh-slot-btn.oh-slot-too-soon {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Legend */
.oh-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 4px;
}

.oh-legend-available {
  background-color: var(--oh-success);
}

.oh-legend-unavailable {
  background-color: var(--oh-text-muted);
}

/* Modal Dialog */
.oh-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--oh-modal-backdrop);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1050;
  padding: 1rem;
}

.oh-modal-card {
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: ohModalSlideIn 0.2s ease-out;
}

@keyframes ohModalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.oh-slot-summary-box {
  background: var(--oh-slot-bg);
  border-left: 3px solid var(--oh-primary);
}

/* Alerts & Notices */
.oh-alert {
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  font-weight: 500;
}

.oh-alert-success {
  background-color: var(--oh-success-light);
  color: var(--oh-success);
  border: 1px solid rgba(46, 125, 50, 0.3);
}

.oh-alert-danger {
  background-color: var(--oh-danger-light);
  color: var(--oh-danger);
  border: 1px solid rgba(198, 40, 40, 0.3);
}

.oh-alert-warning {
  background-color: var(--oh-warning-light);
  color: var(--oh-warning);
  border: 1px solid rgba(245, 127, 23, 0.3);
}

.oh-code-hint {
  background: var(--oh-slot-bg);
  border: 1px solid var(--oh-card-border);
  color: var(--oh-text);
  line-height: 1.5;
}

/* Admin Tabs & Navigation */
.oh-nav-pills .nav-link {
  color: var(--oh-text-muted);
  background: var(--oh-card-bg);
  border: 1px solid var(--oh-card-border);
  border-radius: 8px;
  font-weight: 600;
  padding: 0.6rem 1.25rem;
  transition: all 0.2s ease;
}

.oh-nav-pills .nav-link.active {
  background: var(--oh-primary) !important;
  color: #ffffff !important;
  border-color: var(--oh-primary);
  box-shadow: 0 4px 12px var(--oh-primary-light);
}

.oh-nav-pills .nav-link:hover:not(.active) {
  background: var(--oh-slot-bg);
  color: var(--oh-text);
}

/* Admin Appointments Table / Card List */
.oh-admin-appt-card {
  border-left: 4px solid var(--oh-primary);
  margin-bottom: 1rem;
  padding: 1.25rem;
  background: var(--oh-slot-bg);
  border-radius: 8px;
  transition: transform 0.15s ease;
}

.oh-admin-appt-card:hover {
  transform: translateX(3px);
}

.oh-admin-appt-card.oh-status-cancelled {
  border-left-color: var(--oh-text-muted);
  opacity: 0.75;
}

/* Responsive utilities */
@media (max-width: 768px) {
  .oh-card {
    padding: 1.25rem;
  }
  .oh-title {
    font-size: 1.6rem;
  }
  .oh-slots-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }
  .oh-slot-btn {
    padding: 0.6rem 0.3rem;
  }
  .oh-slot-btn .oh-slot-time {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .oh-slots-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}