/* Modern Mobile-First CSS Theme for UNIMIB Calendar */

:root {
  --bg-primary: #0F172A;
  --bg-surface: #1E293B;
  --bg-surface-glass: rgba(30, 41, 59, 0.85);
  --bg-card: #334155;
  --bg-card-hover: #475569;
  --border-color: rgba(255, 255, 255, 0.1);
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --accent-purple: #8B5CF6;
  --accent-purple-bg: rgba(139, 92, 246, 0.15);
  --accent-green: #10B981;
  --accent-green-bg: rgba(16, 185, 129, 0.15);
  --accent-cyan: #06B6D4;
  --accent-cyan-bg: rgba(6, 182, 212, 0.15);
  --danger: #EF4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-main: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  padding-bottom: calc(90px + env(safe-area-inset-bottom, 0px));
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  overflow-x: hidden;
}

/* Header Navbar */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding-top: calc(12px + env(safe-area-inset-top, 0px));
  padding-bottom: 12px;
  padding-left: calc(16px + env(safe-area-inset-left, 0px));
  padding-right: calc(16px + env(safe-area-inset-right, 0px));
}

.nav-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: block;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(115, 7, 35, 0.4);
}

.app-title h1 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFF;
  line-height: 1.2;
}

.app-title p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-title {
  min-width: 0;
}

.app-title > div:last-child {
  min-width: 0;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.15rem;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.btn-icon:active {
  transform: scale(0.92);
  background: rgba(255, 255, 255, 0.15);
}

@media (max-width: 400px) {
  .app-header {
    padding-left: calc(10px + env(safe-area-inset-left, 0px));
    padding-right: calc(10px + env(safe-area-inset-right, 0px));
  }
  .header-actions {
    gap: 4px;
  }
  .btn-icon {
    width: 35px;
    height: 35px;
    min-width: 35px;
    min-height: 35px;
    font-size: 1rem;
    border-radius: 8px;
  }
  .app-title h1 {
    font-size: 0.95rem;
  }
  .app-logo {
    width: 30px;
    height: 30px;
  }
}

/* Shared Timetable Preview Banner */
.preview-banner {
  display: none;
  flex-direction: column;
  gap: 10px;
  padding: 12px 16px;
  background: var(--accent-cyan-bg);
  border-bottom: 1px solid var(--border-color);
}

.preview-banner.active {
  display: flex;
}

.preview-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.85rem;
}

.preview-info strong {
  color: var(--accent-cyan);
}

.preview-info span {
  color: var(--text-secondary);
}

.preview-info .preview-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.preview-info .preview-hint:empty {
  display: none;
}

.preview-actions,
.share-actions {
  display: flex;
  gap: 8px;
}

/* Filter Bar & Toggle */
.filter-container {
  padding: 12px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toggle-group {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.toggle-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
}

.toggle-btn.active {
  background: linear-gradient(135deg, var(--accent-purple), #6366F1);
  color: #FFF;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

/* Week Navigator Bar */
.week-navigator {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--bg-primary);
  margin-top: 4px;
}

.week-nav-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.week-label {
  text-align: center;
}

.week-label .date-range {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.week-label .badge-status {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  margin-top: 2px;
}

/* Days Horizontal Tab Bar */
.days-tab-bar {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px 16px;
  overflow-x: auto;
  scrollbar-width: none;
}

.days-tab-bar::-webkit-scrollbar {
  display: none;
}

.day-tab {
  flex: 0 0 auto;
  min-width: 68px;
  padding: 8px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.day-tab.active {
  background: #FFF;
  color: #0F172A;
  border-color: #FFF;
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
}

.day-tab .tab-name {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.day-tab .tab-date {
  font-size: 0.9rem;
  font-weight: 700;
  margin-top: 2px;
}

.day-tab .tab-dots {
  display: flex;
  justify-content: center;
  gap: 3px;
  margin-top: 4px;

}

.dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-purple);
}

/* Event List Container */
.events-container {
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.day-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.day-header-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.day-header-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

/* Event Card */
.event-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.event-card:active {
  transform: scale(0.98);
}

/* Left Accent Border for My Courses (color set per course by app.js) */
.event-card.target {
  border-left: 5px solid var(--course-color, var(--accent-purple));
}

.event-card.canceled {
  opacity: 0.65;
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.3);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}

.time-badge {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #FFF;
  white-space: nowrap;
}

.course-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  white-space: nowrap;
  background: color-mix(in srgb, var(--course-color, var(--accent-purple)) 15%, transparent);
  color: var(--course-color, var(--accent-purple));
  border: 1px solid color-mix(in srgb, var(--course-color, var(--accent-purple)) 30%, transparent);
}

.course-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 10px;
  line-height: 1.3;
}

.course-title.canceled-text {
  text-decoration: line-through;
  color: var(--danger);
}

.canceled-banner {
  background: var(--danger);
  color: #FFF;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.card-details {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-item i {
  width: 16px;
  text-align: center;
  color: var(--text-muted);
}

.room-pill {
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 600;
  color: #F1F5F9;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
  opacity: 0.6;
}

/* Loading Spinner */
.spinner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Floating QR/Info Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(20px + env(safe-area-inset-top, 0px)) calc(16px + env(safe-area-inset-right, 0px)) calc(20px + env(safe-area-inset-bottom, 0px)) calc(16px + env(safe-area-inset-left, 0px));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 100%;
  max-width: 440px;
  max-height: calc(100vh - 40px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  overflow-y: auto;
  box-shadow: var(--shadow-main);
  text-align: center;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.qr-box {
  background: #FFF;
  padding: 16px;
  border-radius: 12px;
  display: inline-block;
  margin: 16px 0;
}

.qr-box img {
  width: 180px;
  height: 180px;
}

.mobile-url-box {
  background: rgba(0, 0, 0, 0.4);
  padding: 10px 14px;
  border-radius: 8px;
  font-family: monospace;
  font-size: 0.95rem;
  color: var(--accent-cyan);
  word-break: break-all;
  margin-bottom: 14px;
  border: 1px solid var(--border-color);
  user-select: all;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple), #6366F1);
  color: #FFF;
  border: none;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  width: 100%;
  cursor: pointer;
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  width: 100%;
  cursor: pointer;
}

.preview-actions .btn-primary,
.preview-actions .btn-secondary {
  padding: 8px 14px;
}

/* Course of Study Setup Modal */
.setup-content {
  color-scheme: dark;
  text-align: left;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.form-field > label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.form-field select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}

.form-field select:disabled {
  opacity: 0.5;
}

.form-field select option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.field-hint {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0;
}

.choice-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  padding: 8px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
}

.choice-group-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 4px;
}

.choice-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  cursor: pointer;
}

.choice-item input {
  margin-top: 2px;
  accent-color: var(--accent-purple);
  flex-shrink: 0;
}

.choice-item small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: calc(75px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(15, 23, 42, 0.96);
  color: #FFF;
  padding: 10px 18px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), visibility 0.25s ease;
  z-index: 2000;
  white-space: pre-line;
  line-height: 1.4;
  text-align: center;
  max-width: 90vw;
  cursor: pointer;
  user-select: none;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* App Footer / Credits */
.app-footer {
  text-align: center;
  padding: 24px 16px 36px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.app-footer a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.app-footer a:hover {
  color: #FFF;
  text-decoration: underline;
}

.footer-github-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary) !important;
}

.footer-github-link:hover {
  color: #FFF !important;
}

/* App Views Switcher */
.app-view {
  display: block;
}

.app-view.hidden {
  display: none !important;
}

/* Bottom Navigation Bar */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(62px + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 200;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.nav-tab {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 6px 0;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.nav-tab .nav-icon {
  font-size: 1.35rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.nav-tab .nav-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.nav-tab.active {
  color: #FFF;
}

.nav-tab.active .nav-icon {
  transform: translateY(-2px) scale(1.1);
}

.nav-tab.active .nav-label {
  color: var(--accent-cyan);
}

.nav-tab.active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  border-radius: 0 0 3px 3px;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
}

/* Control Card & Panels */
.control-card {
  margin: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Room Occupancy Styles */
.rooms-select-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rooms-select-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rooms-select-group label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.rooms-select-group select,
.rooms-select-group input[type="date"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: #FFF;
  font-size: 0.9rem;
  outline: none;
}

.rooms-date-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.date-picker-custom-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  cursor: pointer;
  min-height: 38px;
  box-sizing: border-box;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.date-picker-custom-wrapper:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(0, 0, 0, 0.45);
}

.custom-date-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: #FFF;
  letter-spacing: 0.5px;
  pointer-events: none;
  font-family: inherit;
}

.custom-date-icon {
  font-size: 0.9rem;
  pointer-events: none;
  opacity: 0.85;
}

.hidden-date-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 5;
  -webkit-appearance: none;
  color-scheme: dark;
}

.rooms-summary-banner {
  margin: 0 16px 12px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.82rem;
}

.stats-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.badge-stat {
  padding: 4px 8px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-stat.free {
  background: var(--accent-green-bg);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-stat.occupied {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-stat.total {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.rooms-filter-pills {
  display: flex;
  gap: 8px;
  margin: 0 16px 12px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.filter-pill {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.filter-pill.active {
  background: var(--accent-purple);
  color: #FFF;
  border-color: var(--accent-purple);
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4);
}

/* Rooms Grid */
.rooms-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 0 16px 20px;
}

@media (min-width: 640px) {
  .rooms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .rooms-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.room-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.room-card:active {
  transform: scale(0.98);
}

.room-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.room-card.free {
  border-left: 4px solid var(--accent-green);
}

.room-card.occupied {
  border-left: 4px solid var(--danger);
}

.room-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.room-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: #FFF;
  line-height: 1.2;
}

.room-card-capacity {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-badge {
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.status-badge.free {
  background: var(--accent-green-bg);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.status-badge.occupied {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.status-indicator-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.status-badge.free .status-indicator-dot {
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

.status-badge.occupied .status-indicator-dot {
  background: var(--danger);
  box-shadow: 0 0 6px var(--danger);
}

.room-card-body {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  background: rgba(0, 0, 0, 0.2);
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.room-card-body strong {
  color: #FFF;
}

.room-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-top: 2px;
}

/* Room Schedule Timeline (inside modal) */
.room-timeline {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
  text-align: left;
}

.timeline-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.timeline-time {
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--accent-cyan);
}

.timeline-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: #FFF;
}

.timeline-docente {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Exam Calendar Styles */
.exam-courses-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.course-chip {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: #FFF;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.course-chip.primary {
  background: var(--accent-purple-bg);
  border-color: rgba(139, 92, 246, 0.4);
  color: #E2E8F0;
}

.course-chip.extra {
  background: var(--accent-cyan-bg);
  border-color: rgba(6, 182, 212, 0.4);
  color: #E2E8F0;
}

.course-chip.external {
  background: rgba(139, 92, 246, 0.18);
  border-color: rgba(139, 92, 246, 0.45);
  color: #DDD6FE;
}

.course-chip-remove {
  background: none;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  padding: 0 2px;
  font-size: 0.85rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.course-chip-remove:hover {
  color: #EF4444;
}

.badge-external {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 600;
  background: rgba(139, 92, 246, 0.25);
  border: 1px solid rgba(139, 92, 246, 0.4);
  color: #DDD6FE;
}

.course-chip-add {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed var(--accent-cyan);
  color: var(--accent-cyan);
  cursor: pointer;
  transition: all 0.2s ease;
}

.course-chip-add:hover {
  background: var(--accent-cyan-bg);
}

.btn-remove-chip {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  padding: 0;
  margin-left: 2px;
}

.btn-remove-chip:hover {
  color: var(--danger);
}

.exams-date-group {
  margin-bottom: 20px;
}

.exams-date-header {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent-cyan);
  padding: 6px 16px;
  background: rgba(6, 182, 212, 0.1);
  border-left: 3px solid var(--accent-cyan);
  margin-bottom: 10px;
  border-radius: 0 6px 6px 0;
}

.exam-card {
  margin: 0 16px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s ease;
}

.exam-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
}

.exam-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.exam-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFF;
  line-height: 1.3;
}

.exam-time-badge {
  background: rgba(139, 92, 246, 0.2);
  color: var(--accent-purple);
  border: 1px solid rgba(139, 92, 246, 0.4);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
}

.exam-meta-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.exam-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.exam-meta-item.course {
  color: #E2E8F0;
  font-weight: 500;
}

.exam-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.btn-add-cal {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.btn-add-cal:hover {
  background: var(--accent-purple-bg);
  border-color: var(--accent-purple);
  color: #FFF;
}



/* ──────────────────────────────────────────────────────────────
   Profile & Shared Calendar Styles
   ────────────────────────────────────────────────────────────── */

/* Profile ID box (shown when logged in) */
.profile-id-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 8px;
}

.profile-nickname {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.profile-id-code {
  font-size: 1.05rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  color: var(--accent-purple);
  letter-spacing: 0.18em;
  display: block;
  margin-top: 4px;
}

.profile-sync-row {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px;
  padding: 10px 12px;
}

/* Profile header indicator (small badge shown in header when logged in) */
.btn-icon.profile-active {
  position: relative;
}

.btn-icon.profile-active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  border: 2px solid var(--bg-primary);
}

/* ── Friends View ── */
.friend-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  white-space: nowrap;
  max-width: 160px;
}

.friend-chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.friend-chip-remove {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  padding: 0 2px;
  font-size: 0.75rem;
  line-height: 1;
  transition: color 0.2s;
  flex-shrink: 0;
}

.friend-chip-remove:hover {
  color: #EF4444;
}

/* ── Shared Calendar Event cards ── */
.shared-event-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 8px;
  border-left: 4px solid var(--accent-purple);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.shared-event-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.shared-event-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shared-event-owner {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}

.shared-event-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.76rem;
  color: var(--text-secondary);
}

.shared-date-group {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px;
  padding: 8px 12px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* Friend search results list */
.friend-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  margin-bottom: 6px;
  cursor: pointer;
  transition: background 0.2s;
}

.friend-result-item:hover {
  background: rgba(139, 92, 246, 0.15);
}

.friend-result-info {
  display: flex;
  flex-direction: column;
}

.friend-result-nick {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.friend-result-id {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: monospace;
  letter-spacing: 0.1em;
}

/* Friends legend bar */
.friends-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.friends-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── Friends view: shared event card (me variant) ── */
.shared-event-card--me {
  background: rgba(45, 212, 191, 0.06);
}

/* ── Free Slots view ──────────────────────────────── */
.free-slots-intro {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.25);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.free-slots-day-header {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 8px 0 4px;
  border-top: 1px solid var(--border-color);
  margin-top: 8px;
}

.free-slot-card {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 8px;
}

.free-slot-time {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-green);
}

.free-slot-duration {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.free-slots-banner {
  text-align: center;
  padding: 30px 16px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 12px;
  color: var(--text-primary);
}

/* ── Friends: Shared event multiple student tags ── */
.shared-event-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  justify-content: flex-end;
}

/* ── Friends: Daily Timeline Grid View (08:30 – 18:30) ── */
.friends-day-pills {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 4px 2px 10px;
  margin-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.friends-day-pills::-webkit-scrollbar {
  display: none;
}

.friends-day-pill {
  flex: 1;
  min-width: 58px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 8px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}
.friends-day-pill:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.2);
}
.friends-day-pill.active {
  background: rgba(139, 92, 246, 0.22);
  border-color: var(--accent-purple);
  color: #FFF;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.25);
}
.day-pill-name {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}
.day-pill-num {
  font-size: 1rem;
  font-weight: 700;
  color: inherit;
  line-height: 1.1;
}
.day-pill-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-purple);
  margin-top: 2px;
}
.day-pill-dot.free {
  background: var(--accent-green);
}
.day-pill-today {
  font-size: 0.62rem;
  color: var(--accent-cyan);
  font-weight: 700;
  text-transform: uppercase;
  margin-top: 1px;
}

.friends-grid-header-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
  padding: 0 4px;
}

.friends-grid-scroll-box {
  position: relative;
  overflow-y: auto;
  overflow-x: hidden;
  max-height: 72vh;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-color);
  padding: 10px 6px 12px 0;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

.friends-grid-wrapper {
  position: relative;
  width: 100%;
  display: flex;
  box-sizing: border-box;
}

.friends-grid-times {
  position: relative;
  width: 52px;
  flex-shrink: 0;
}
.friends-grid-time-label {
  position: absolute;
  left: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: monospace;
  font-weight: 600;
  transform: translateY(-50%);
  user-select: none;
}

.friends-grid-canvas {
  position: relative;
  flex: 1;
  min-width: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.friends-grid-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  border-top: 1px dashed rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

.friends-grid-now {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: #EF4444;
  z-index: 10;
  pointer-events: none;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
}
.friends-grid-now-badge {
  position: absolute;
  right: 4px;
  top: -10px;
  background: #EF4444;
  color: #FFF;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 8px;
}

.friends-grid-card {
  position: absolute;
  border-radius: 8px;
  background: rgba(30, 41, 59, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-left-width: 4px;
  border-left-style: solid;
  box-sizing: border-box;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, z-index 0.15s ease;
  z-index: 2;
}
.friends-grid-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5);
  z-index: 8;
  border-color: rgba(255, 255, 255, 0.3);
}

.friends-grid-card-inner {
  padding: 4px 6px;
  height: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.friends-grid-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  margin-bottom: 2px;
}
.friends-grid-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 5px;
  white-space: nowrap;
  line-height: 1.2;
}

.friends-grid-card-title {
  font-size: 0.76rem;
  font-weight: 700;
  color: #FFF;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.friends-grid-card-time {
  font-size: 0.68rem;
  color: var(--text-secondary);
  margin-top: 1px;
  font-family: monospace;
  white-space: nowrap;
}

.friends-grid-card-room,
.friends-grid-card-prof {
  font-size: 0.66rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.friends-grid-card--me {
  background: rgba(45, 212, 191, 0.09);
  border-color: rgba(45, 212, 191, 0.35);
}

.friends-grid-empty-banner {
  text-align: center;
  padding: 80px 16px;
  width: 100%;
  color: var(--text-primary);
  box-sizing: border-box;
}

/* ============================================================
   Teachers Calendar & Autocomplete Styles (Calendario Docenti)
   ============================================================ */
.teachers-autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-top: 6px;
  max-height: 290px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
}

.teachers-autocomplete-item {
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.teachers-autocomplete-item:last-child {
  border-bottom: none;
}

.teachers-autocomplete-item:hover,
.teachers-autocomplete-item.active {
  background: rgba(139, 92, 246, 0.22);
}

.teachers-autocomplete-item .teacher-item-name {
  color: #FFF;
  font-weight: 600;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.teachers-autocomplete-item .teacher-item-courses {
  color: var(--text-secondary);
  font-size: 0.74rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.teacher-favorite-chip {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: #FFF;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.teacher-favorite-chip:hover {
  background: var(--accent-purple-bg);
  border-color: rgba(139, 92, 246, 0.4);
}

.teacher-favorite-chip.active {
  background: linear-gradient(135deg, var(--accent-purple), #6366F1);
  border-color: transparent;
  color: #FFF;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.35);
}

.teacher-suggestion-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: 14px;
  font-size: 0.76rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.teacher-suggestion-chip:hover {
  background: var(--accent-cyan-bg);
  border-color: var(--accent-cyan);
  color: #FFF;
}

.teacher-email-link {
  color: var(--accent-cyan);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  padding: 2px 6px;
  background: rgba(6, 182, 212, 0.1);
  border-radius: 6px;
  transition: background 0.15s ease;
}

.teacher-email-link:hover {
  background: rgba(6, 182, 212, 0.2);
  text-decoration: underline;
}

.btn-ics-action {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.btn-ics-action:hover {
  background: var(--accent-cyan-bg);
  color: #FFF;
  border-color: var(--accent-cyan);
}

/* ---------- Schedule Changes Notification & Modal Styles ---------- */
.changes-btn {
  position: relative;
}

.changes-badge-dot {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 9px;
  height: 9px;
  background: #EF4444;
  border-radius: 50%;
  border: 2px solid var(--bg-surface);
  box-shadow: 0 0 6px rgba(239, 68, 68, 0.8);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.timetable-changes-banner {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(239, 68, 68, 0.1));
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin: 12px 16px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  animation: fadeIn 0.3s ease;
}

.changes-banner-content {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.changes-banner-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.changes-banner-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.changes-banner-text strong {
  font-size: 0.86rem;
  color: #FBBF24;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.changes-banner-text span {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.changes-banner-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.btn-changes-view {
  background: rgba(245, 158, 11, 0.22);
  color: #FDE68A;
  border: 1px solid rgba(245, 158, 11, 0.45);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.btn-changes-view:hover {
  background: rgba(245, 158, 11, 0.38);
  color: #FFF;
}

.btn-changes-dismiss {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  font-size: 0.85rem;
  border-radius: 4px;
}

.btn-changes-dismiss:hover {
  color: var(--text-primary);
}

.schedule-changes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 55vh;
  overflow-y: auto;
  margin: 14px 0 6px;
  padding-right: 4px;
}

.change-item-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-left-width: 4px;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background 0.2s ease;
}

.change-item-card.type-canceled,
.change-item-card.type-removed {
  border-left-color: #EF4444;
  background: rgba(239, 68, 68, 0.04);
}

.change-item-card.type-room {
  border-left-color: #F59E0B;
  background: rgba(245, 158, 11, 0.04);
}

.change-item-card.type-time {
  border-left-color: #06B6D4;
  background: rgba(6, 182, 212, 0.04);
}

.change-item-card.type-reinstated {
  border-left-color: #10B981;
  background: rgba(16, 185, 129, 0.04);
}

.change-item-card.type-added {
  border-left-color: #8B5CF6;
  background: rgba(139, 92, 246, 0.04);
}

.change-item-card.type-room-and-time {
  border-left-color: #F59E0B;
  background: rgba(245, 158, 11, 0.05);
}

.change-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.change-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.change-badge.badge-canceled,
.change-badge.badge-removed {
  background: rgba(239, 68, 68, 0.18);
  color: #FCA5A5;
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.change-badge.badge-room {
  background: rgba(245, 158, 11, 0.18);
  color: #FCD34D;
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.change-badge.badge-time {
  background: rgba(6, 182, 212, 0.18);
  color: #67E8F9;
  border: 1px solid rgba(6, 182, 212, 0.35);
}

.change-badge.badge-reinstated {
  background: rgba(16, 185, 129, 0.18);
  color: #6EE7B7;
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.change-badge.badge-added {
  background: rgba(139, 92, 246, 0.18);
  color: #C4B5FD;
  border: 1px solid rgba(139, 92, 246, 0.35);
}

.change-card-time {
  font-size: 0.74rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.change-card-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #FFF;
  line-height: 1.3;
}

.change-card-body {
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--text-primary);
}

.change-card-detail {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 3px;
}

.change-old-val {
  color: var(--text-muted);
  text-decoration: line-through;
  font-size: 0.76rem;
}

.change-new-val {
  font-weight: 700;
}

.change-new-val.room-val {
  color: #FBBF24;
}

.change-new-val.time-val {
  color: #38BDF8;
}

.event-card-change-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 6px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 600;
  width: fit-content;
}

.event-card-change-badge.badge-room-change {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #FBBF24;
}

.event-card-change-badge.badge-time-change {
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.4);
  color: #38BDF8;
}

.event-card.event-card-removed {
  opacity: 0.8;
  border-style: dashed;
  border-color: rgba(239, 68, 68, 0.6);
  background: rgba(239, 68, 68, 0.05);
}