/* Page reset: kill stray borders/outlines on common blocks */
.main-content,
.session-grid,
.content-header,
.content-title,
.calendar,
.calendar-header,
.calendar-grid,
.calendar-container {
  border: 0;
  outline: 0;
}

/* Containers */
.container,
.session-container {
  background: #fff;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.booking-container { border: 0; }
.section-header { margin-bottom: 2rem; }

.section-header-content h2 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.section-header-content p { color: #666; }

.toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.primary-btn {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  background: var(--accent-color);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: all .3s ease;
}
.primary-btn:hover { transform: translateY(-2px); }

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem;
}
.pagination-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  border-radius: 50%;
  transition: background-color .3s;
}
.pagination-btn:disabled { cursor: not-allowed; opacity: .5; }
#pageInfo { font-size: .9rem; color: #666; min-width: 100px; text-align: center; }
.toggle-btn:hover { background: var(--hover-color); }

/* Upcoming sessions */
.upcoming-sessions { display: grid; gap: 1rem; margin-top: 1.5rem; }

.session-card {
  background: #fff;
  border-radius: 8px;
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all .3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin: .5rem 0;
}
.session-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }

.session-info { flex-grow: 1; margin-right: 1.5rem; }
.session-info h4 { margin: 0 0 .5rem 0; font-size: 1.2rem; }
.session-date { color: #666; font-size: .9rem; margin: 0; }

.join-session-btn {
  display: flex; align-items: center; gap: .5rem;
  padding: .5rem 1rem;
  background: var(--accent-color);
  color: #fff;
  border: none; border-radius: 4px;
  cursor: pointer; font-weight: 500;
  transition: all .3s ease;
}
.join-session-btn:hover { transform: translateY(-2px); box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.join-session-btn .material-icons { font-size: 1.2rem; }

/* Subject selection */
.subject-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
  list-style: none;
  padding: 0;
}

.subject-item {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  display: flex; align-items: center; gap: .75rem;
  transition: all .3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  font-size: 1rem;
}
.subject-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.subject-item.selected { background: var(--accent-color); color: #fff; }

/* Calendar */
.calendar {
  background: #fff;
  border-radius: 8px;
  padding: 2.5rem;
  margin-top: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.calendar.active { display: block; }

.calendar-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 2rem;
}
.calendar-header h3 { margin: 0; font-size: 1.3rem; font-weight: 600; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: .5rem;
}

.calendar-day {
  text-align: center;
  padding: .5rem;
  cursor: pointer;
  border-radius: 4px;
  border: 0;
  background: #fff;
  position: relative;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
}
.calendar-day.header {
  cursor: default; font-weight: 600; background: transparent !important;
  border: 0 !important; pointer-events: none !important;
  box-shadow: none !important;
  color: #000;
  position: relative;
  z-index: 1;
}
.calendar-day.header:hover { background: transparent !important; transform: none !important; box-shadow: none !important; }
.calendar-day:hover { background: var(--hover-color); }
.calendar-day.selected { background: var(--accent-color); color: #fff; }
.calendar-day.has-event { background: #f5f5f5; font-weight: 600; }
.calendar-day.today { background: #fff9c4; box-shadow: none !important; }

/* Time slots */
.time-slots {
  display: none;
  margin-top: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
}
.time-slots.active { display: grid; }
.time-slots h3 {
  grid-column: 1 / -1;
  margin: 0 0 1rem 0;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-color);
}

.time-slot {
  padding: 1rem; background: #fff; border-radius: 8px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  transition: all .3s ease; border: 1px solid #eee;
}
.time-slot:hover { background: var(--hover-color); transform: translateY(-2px); box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.time-slot.selected { background: var(--accent-color); color: #fff; border-color: var(--accent-color); }
.time-slot.selected .material-icons { animation: pulse 1s infinite; }

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* Subscribe */
.subscribe-btn {
  display: none;
  margin-top: 1.5rem;
  padding: .75rem 1.5rem;
  background: var(--accent-color);
  color: #fff;
  border: none; border-radius: 4px;
  cursor: pointer; font-weight: 500;
  transition: all .3s ease;
  width: 100%; max-width: 300px; margin-left: auto; margin-right: auto;
}
.subscribe-btn:hover { transform: translateY(-2px); box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.subscribe-btn.active { display: block; }

/* Success */
.success-message {
  display: none;
  margin-top: 2rem;
  padding: 1.5rem;
  background: #4CAF50;
  color: #fff;
  border-radius: 8px;
  text-align: center;
  animation: fadeIn .3s ease-in-out;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.success-message.active { display: block; }

/* Booking summary */
.booking-message {
  margin-top: 2rem;
  padding: 2rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.booking-summary { text-align: center; }
.booking-summary h3 {
  margin: 0 0 1.5rem 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-color);
}
.booking-summary p { margin: .75rem 0; font-size: 1rem; color: var(--text-color); }

.confirm-booking-btn {
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .75rem 1.5rem;
  background: var(--accent-color); color: #fff;
  border: none; border-radius: 8px; cursor: pointer;
  font-weight: 600; font-size: 1rem; transition: all .3s ease;
  margin: 1.5rem auto 0; min-width: 200px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.confirm-booking-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,0.15); background: var(--hover-color); }
.confirm-booking-btn:active { transform: translateY(0); }
.confirm-booking-btn .material-icons { font-size: 1.2rem; }

/* Generic confirm/cancel/join buttons used in confirmation */
.confirm-btn {
  background-color: #fff !important;
  color: #4CAF50 !important;
  margin-top: 1rem !important;
  font-weight: bold !important;
  transition: transform .2s ease-in-out !important;
}
.confirm-btn:hover { transform: translateY(-2px) !important; box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important; }

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

.success-actions { display: none; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
.success-actions.active { display: flex; }

.book-new-btn, .back-btn, .book-another-btn {
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  margin: 1.5rem auto; padding: .75rem 1.5rem;
  color: #fff; border: none; border-radius: 4px; cursor: pointer;
  font-weight: 500; transition: all .3s ease; width: 100%; max-width: 300px;
}
.book-new-btn, .book-another-btn { background: var(--accent-color); }
.back-btn { background: #666; }
.book-new-btn:hover, .back-btn:hover, .book-another-btn:hover { transform: translateY(-2px); box-shadow: 0 2px 8px rgba(0,0,0,0.1); }

/* Booking container visibility */
.booking-container { display: none; }
.booking-container.active { display: block; }
.booking-container .section-header { margin-bottom: 2rem; }
.booking-container .section-header h2 { margin: 0; padding: 0; }

/* Section headings */
.subject-selection { margin-top: 2rem; }
.subject-selection h3,
.session-type-selection h3 {
  margin: 0 0 1.5rem 0;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-color);
}
.session-type-selection { margin-top: 2rem; }

.section-actions { display: flex; flex-direction: column; gap: 1rem; align-items: center; }

/* Confirmation */
.confirmation-message {
  margin-top: 2rem;
  padding: 2rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  animation: slideIn .3s ease-out;
}
.confirmation-content { text-align: center; }
.confirmation-content h3 { color: var(--accent-color); margin-bottom: 1.5rem; font-size: 1.5rem; }

.session-details { background: #f8f9fa; padding: 1.5rem; border-radius: 8px; margin-bottom: 1.5rem; }
.session-details p { margin: .5rem 0; font-size: 1.1rem; }

.confirmation-buttons { display: flex; gap: 1rem; justify-content: center; margin-top: 1.5rem; }
.confirm-btn, .cancel-btn, .join-btn {
  display: flex; align-items: center; gap: .5rem;
  padding: .75rem 1.5rem; border: none; border-radius: 6px; cursor: pointer; font-weight: 500; transition: all .3s ease;
}
.confirm-btn { background: var(--accent-color); color: #fff; }
.cancel-btn { background: #dc3545; color: #fff; }
.join-btn { background: #28a745; color: #fff; }
.confirm-btn:hover, .cancel-btn:hover, .join-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.confirmation-content.success { color: #28a745; }
.success-icon { font-size: 3rem; color: #28a745; margin-bottom: 1rem; }

/* Session type cards */
.session-type-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.session-type-option { cursor: pointer; display: block; }
.session-type-option input[type="radio"] { display: none; }

.session-type-option .option-content {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.5rem; background: #fff;
  border: 2px solid rgba(255,152,0,.3); /* fixed undefined --primary-color-rgb */
  border-radius: 8px; transition: all .3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.session-type-option:hover .option-content {
  transform: translateY(-2px);
  border-color: var(--accent-color);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.session-type-option input[type="radio"]:checked + .option-content {
  background: var(--accent-color); color: #fff; border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(255,87,34,.3); /* fixed undefined --accent-color-rgb */
}
.session-type-option .material-icons { font-size: 2rem; color: var(--accent-color); transition: color .3s ease; }
.session-type-option input[type="radio"]:checked + .option-content .material-icons { color: #fff; }
.session-type-option .option-text { display: flex; flex-direction: column; gap: .25rem; }
.session-type-option .option-text strong { font-size: 1.1rem; font-weight: 600; }
.session-type-option .option-text small { font-size: .875rem; opacity: .9; }

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

/* Prefer instant scroll on this page */
html { scroll-behavior: auto !important; }