/* Modern Dark Glassmorphic Stylesheet */

/* --- Design System & CSS Variables --- */
:root {
  --font-heading: 'Outfit', 'Inter', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;

  /* Color Palette */
  --bg-main: #090d16;
  --bg-glass: rgba(17, 24, 39, 0.65);
  --bg-glass-hover: rgba(26, 36, 56, 0.8);
  --bg-glass-active: rgba(35, 48, 74, 0.9);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-bright: rgba(255, 255, 255, 0.16);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-glow: 0 0 15px rgba(59, 130, 246, 0.2);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-muted-light: #6b7280;

  --primary: #4f46e5;
  --primary-hover: #6366f1;
  --primary-light: rgba(79, 70, 229, 0.15);
  
  --secondary: #1f2937;
  --secondary-hover: #374151;

  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-hover: #f87171;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  overflow-x: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* --- Utilities --- */
.hidden {
  display: none !important;
}
.hidden-slide {
  max-height: 0 !important;
  opacity: 0 !important;
  overflow: hidden !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  transition: all var(--transition-normal);
}
.w-full { width: 100%; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.border-t { border-top: 1px solid var(--border-glass); }
.pt-4 { padding-top: 1rem; }
.spacer { flex: 1; }
.block { display: block; }
.text-xs { font-size: 0.75rem; }
.text-muted { color: var(--text-muted); }
.text-muted-light { color: var(--text-muted-light); }
.cursor-pointer { cursor: pointer; }
.text-center { text-align: center; }

/* Glassmorphism Panel Class */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glass);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Button Styles */
button, .btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

button:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--border-glass-bright);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}
.btn-danger:hover {
  background-color: var(--danger-hover);
}

.btn-icon-round {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  padding: 0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
}
.btn-icon-round:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--border-glass-bright);
}
.btn-icon-round svg {
  width: 18px;
  height: 18px;
}

.btn-icon {
  background: transparent;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
}
.btn-icon:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.06);
}
.btn-icon svg {
  width: 20px;
  height: 20px;
}

.btn-link {
  background: transparent;
  padding: 0;
  color: var(--primary-hover);
  font-size: 0.8125rem;
}
.btn-link:hover {
  text-decoration: underline;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8125rem;
}

.btn-back {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 0;
  margin-bottom: 1.5rem;
  align-self: flex-start;
}
.btn-back:hover {
  color: var(--text-main);
}
.btn-back svg {
  width: 16px;
  height: 16px;
}

/* Forms and Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
}

.input-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.input-wrapper label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
select {
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.input-help {
  font-size: 0.75rem;
  color: var(--text-muted-light);
  margin-top: 0.125rem;
}

/* --- Loader Spinner Overlay --- */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.loader-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

/* --- Toast Notification System --- */
.toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 9998;
  max-width: 350px;
}

.toast {
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(17, 24, 39, 0.9);
  border-left: 4px solid var(--primary);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(12px);
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.toast-success { border-left-color: var(--success); }
.toast.toast-warning { border-left-color: var(--warning); }
.toast.toast-danger { border-left-color: var(--danger); }

@keyframes slideIn {
  from {
    transform: translateX(120%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast-close {
  background: transparent;
  padding: 0;
  border: none;
  color: var(--text-muted-light);
  cursor: pointer;
}
.toast-close:hover {
  color: var(--text-main);
}
.toast-close svg {
  width: 14px;
  height: 14px;
}

/* --- View Switching --- */
.view {
  opacity: 0;
  pointer-events: none;
  position: absolute;
  inset: 0;
  overflow: hidden;
  transition: opacity var(--transition-normal);
}
.view.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
}

/* --- Lock / Auth Screen --- */
.auth-view {
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top right, rgba(79, 70, 229, 0.12), transparent),
              radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.05), transparent),
              var(--bg-main);
  height: 100vh;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 1.5rem;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header .app-logo {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  border: 1px solid rgba(79, 70, 229, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem auto;
  color: var(--primary-hover);
  box-shadow: var(--shadow-glow);
}
.auth-header .app-logo svg {
  width: 28px;
  height: 28px;
}

.auth-header h1 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 0.25rem;
}

.auth-header p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* User selection grid */
.auth-users-selection {
  width: 100%;
}

.users-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-height: 280px;
  overflow-y: auto;
  padding: 0.25rem;
}

.user-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem 0.75rem;
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.user-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-glass-bright);
  transform: translateY(-2px);
}

.user-avatar-large {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.user-card span {
  font-size: 0.9375rem;
  font-weight: 600;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* PIN Screen */
.auth-pin-entry {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.selected-user-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.selected-user-badge h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
}

.pin-display {
  display: flex;
  gap: 0.875rem;
  margin-bottom: 2rem;
}

.pin-dot {
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-glass-bright);
  background: transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.pin-dot.filled {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: 0 0 10px var(--primary-hover);
}

#pin-hidden-input {
  position: absolute;
  top: -100px;
  left: -100px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.pin-keyboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.875rem;
  width: 100%;
  max-width: 280px;
}

.pin-key {
  height: 56px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0;
}
.pin-key:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--border-glass-bright);
}

.pin-key.btn-clear {
  color: var(--danger-hover);
  font-size: 0.9375rem;
}
.pin-key.btn-backspace {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}
.pin-key.btn-backspace svg {
  width: 22px;
  height: 22px;
}

.auth-onboarding {
  width: 100%;
}
.auth-onboarding h2 {
  font-family: var(--font-heading);
  text-align: center;
  font-size: 1.375rem;
  margin-bottom: 0.5rem;
}
.auth-onboarding p {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* --- App Shell Structure --- */
.app-shell {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-header {
  height: 64px;
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-top: none;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.brand-icon {
  width: 26px;
  height: 26px;
  color: var(--primary-hover);
}
.brand-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.main-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.875rem;
}
.nav-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}
.nav-btn.active {
  color: #ffffff;
  background: var(--primary-light);
  border: 1px solid rgba(79, 70, 229, 0.2);
}

.sync-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}

.indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
}

/* Sync states */
.sync-indicator.not-configured .indicator-dot { background-color: var(--text-muted-light); }
.sync-indicator.synced .indicator-dot { background-color: var(--success); box-shadow: 0 0 6px var(--success); }
.sync-indicator.syncing .indicator-dot { background-color: var(--warning); box-shadow: 0 0 6px var(--warning); }
.sync-indicator.error .indicator-dot { background-color: var(--danger); box-shadow: 0 0 6px var(--danger); }

.sync-spinner {
  width: 12px;
  height: 12px;
  animation: spin 1s linear infinite;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.8125rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* App Main Content Area */
.app-main {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.app-section {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  display: flex;
  overflow: hidden;
  transition: opacity var(--transition-normal);
  padding: 1.5rem;
}
.app-section.active {
  opacity: 1;
  pointer-events: auto;
}

/* --- Calendar Section Layout --- */
#calendar-section {
  gap: 1.5rem;
}

.sidebar-filters {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
  overflow-y: auto;
}

.sidebar-block {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

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

.sidebar-block h3 {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.view-mode-selector {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.radio-label {
  cursor: pointer;
  width: 100%;
}
.radio-label input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.radio-button {
  display: block;
  text-align: center;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.radio-label input:checked + .radio-button {
  background: var(--primary-light);
  border-color: var(--primary-hover);
  color: #ffffff;
}
.radio-button:hover {
  background: rgba(255, 255, 255, 0.08);
}

.custom-date-inputs {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: rgba(0, 0, 0, 0.15);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  transition: all var(--transition-normal);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box input {
  width: 100%;
  padding-left: 2.25rem;
}
.search-box svg {
  position: absolute;
  left: 0.75rem;
  width: 16px;
  height: 16px;
  color: var(--text-muted-light);
}

.filter-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-muted);
  user-select: none;
}
.checkbox-wrapper:hover {
  color: var(--text-main);
}
.checkbox-wrapper input[type="checkbox"] {
  accent-color: var(--primary-hover);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.filter-item-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
}
.filter-color-indicator {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
}

/* Calendar Container */
.calendar-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  overflow: hidden;
}

.calendar-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.controls-left, .controls-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.calendar-title {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  margin-left: 0.5rem;
}

.calendar-view-wrapper {
  flex: 1;
  position: relative;
  overflow-y: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: rgba(0, 0, 0, 0.15);
}

/* --- Month View Grid --- */
.month-view-grid {
  display: grid;
  grid-template-columns: 40px repeat(7, 1fr);
  grid-template-rows: 40px;
  grid-auto-rows: minmax(100px, 1fr);
  height: 100%;
  min-height: 500px;
}

.grid-header-cell {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-glass);
  border-right: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}
.grid-header-cell:last-child {
  border-right: none;
}

.week-num-cell {
  background: rgba(255, 255, 255, 0.02);
  border-right: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted-light);
}

.day-cell {
  border-right: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  min-height: 100px;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.day-cell:nth-child(8n) {
  border-right: none;
}
.day-cell:hover {
  background: rgba(255, 255, 255, 0.02);
}

.day-cell.other-month {
  opacity: 0.3;
}

.day-cell.today {
  background: rgba(79, 70, 229, 0.05);
}

.day-cell-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  font-weight: 500;
}

.day-number {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}
.day-cell.today .day-number {
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 700;
}

.day-cell-events {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow-y: auto;
  flex: 1;
}

/* Appointment block elements */
.appt-block {
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.25;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  border-left: 3px solid rgba(0, 0, 0, 0.2);
  transition: transform var(--transition-fast), filter var(--transition-fast);
  cursor: pointer;
}
.appt-block:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

.appt-block-time {
  font-size: 0.6875rem;
  opacity: 0.85;
}

.appt-block-roster {
  display: inline-block;
  background: rgba(0, 0, 0, 0.2);
  padding: 0 0.25rem;
  border-radius: 3px;
  font-size: 0.625rem;
  margin-top: 0.125rem;
  width: max-content;
}

/* --- Week View Grid --- */
.week-view-grid {
  display: grid;
  grid-template-columns: 60px repeat(7, 1fr);
  grid-template-rows: 50px;
  grid-auto-rows: 60px; /* One row per hour */
  height: max-content;
  position: relative;
}

.week-view-header-cell {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-glass);
  border-right: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
}
.week-view-header-cell:last-child {
  border-right: none;
}
.week-view-header-cell .weekday-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}
.week-view-header-cell .weekday-date {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
}
.week-view-header-cell.today {
  color: var(--primary-hover);
}

.hour-label-cell {
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
  padding-right: 0.5rem;
  padding-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted-light);
  border-right: 1px solid var(--border-glass);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  background: rgba(0, 0, 0, 0.1);
}

.week-column {
  border-right: 1px solid var(--border-glass);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  position: relative;
  height: 100%;
}
.week-column:last-child {
  border-right: none;
}

.week-column.today {
  background: rgba(79, 70, 229, 0.02);
}

.week-cell-bg-line {
  height: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

/* Absolute positioned events in Week View */
.week-appt-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  padding: 0 0.25rem;
}

.appt-block-absolute {
  position: absolute;
  pointer-events: auto;
  border-radius: var(--radius-md);
  padding: 0.5rem;
  color: #ffffff;
  border-left: 4px solid rgba(0, 0, 0, 0.25);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow: hidden;
  transition: transform var(--transition-fast), filter var(--transition-fast), z-index var(--transition-fast);
  cursor: pointer;
}
.appt-block-absolute:hover {
  transform: scale(1.02);
  filter: brightness(1.1);
  z-index: 10;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.appt-title {
  font-weight: 700;
  font-size: 0.8125rem;
  line-height: 1.2;
}

/* --- Day View Grid --- */
/* Similar layout as Week View but just 1 column */
.day-view-grid {
  display: grid;
  grid-template-columns: 60px 1fr;
  grid-template-rows: 50px;
  grid-auto-rows: 60px;
  height: max-content;
}

.day-view-header-cell {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  padding: 0.5rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
}

/* --- Custom View (Zeitraum) --- */
.custom-view-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
}

.custom-view-day-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.custom-view-day-header {
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 0.5rem;
  margin-bottom: 0.875rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.custom-view-day-header h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
}
.custom-view-day-header .day-info {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.custom-view-events-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.custom-view-event-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: #ffffff;
  cursor: pointer;
  transition: transform var(--transition-fast);
}
.custom-view-event-item:hover {
  transform: translateX(4px);
}

.custom-view-event-time {
  font-weight: 700;
  font-size: 0.875rem;
  background: rgba(0, 0, 0, 0.15);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.custom-view-event-details {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.custom-view-event-title {
  font-weight: 600;
  font-size: 0.9375rem;
}
.custom-view-event-roster {
  font-size: 0.75rem;
  opacity: 0.8;
  margin-top: 0.125rem;
}

.custom-view-event-type {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
}

.empty-day-placeholder {
  color: var(--text-muted-light);
  font-size: 0.875rem;
  font-style: italic;
}

.no-events-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
  text-align: center;
  gap: 1rem;
}
.no-events-placeholder svg {
  width: 48px;
  height: 48px;
  color: var(--text-muted-light);
}

/* --- Section Layouts --- */
.section-container {
  width: 100%;
  height: 100%;
  overflow-y: auto;
}

.grid-two-cols {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 1.5rem;
  align-items: start;
}

.sidebar-forms {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.content-panel {
  padding: 1.75rem;
}

.panel-header {
  margin-bottom: 1.5rem;
}
.panel-header h2 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
}
.panel-header p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.125rem;
}

/* Data Tables */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.15);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th, .data-table td {
  padding: 1rem 1.25rem;
  font-size: 0.875rem;
}

.data-table th {
  background: rgba(255, 255, 255, 0.03);
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-glass);
}

.data-table td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.01);
}

/* --- Settings Views --- */
.grid-two-cols-nested {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.settings-types-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.type-setting-row {
  display: grid;
  grid-template-columns: 1fr 50px 40px;
  gap: 1rem;
  align-items: center;
}

.type-color-picker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.type-color-picker input[type="color"] {
  border: none;
  background: transparent;
  width: 38px;
  height: 38px;
  cursor: pointer;
}

/* --- Modal Overlays --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  width: 100%;
  max-width: 520px;
  padding: 2rem;
  margin: 1.5rem;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}
.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}
.modal-header h2 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
}

.modal-body {
  max-height: 75vh;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
}

.max-w-sm {
  max-width: 380px;
}

.recurrence-choices-vertical {
  display: flex;
  flex-direction: column;
}

.recurrence-choices-vertical button {
  justify-content: flex-start;
  padding: 1rem;
}

/* Color Picker Grid */
.color-picker-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.5rem 0;
}

.color-option {
  position: relative;
  cursor: pointer;
}
.color-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.color-dot {
  display: block;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.color-dot.default-color-dot {
  background: conic-gradient(from 0deg, red, yellow, green, blue, red);
}

.color-option input[type="radio"]:checked + .color-dot {
  border-color: #ffffff;
  transform: scale(1.12);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.custom-color-option {
  display: flex;
  align-items: center;
}
.custom-color-option input[type="color"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

/* Weekday selector for recurring events */
.weekdays-selector {
  display: flex;
  gap: 0.375rem;
  flex-wrap: wrap;
}

.weekday-pill {
  cursor: pointer;
  flex: 1;
  min-width: 32px;
}
.weekday-pill input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.weekday-pill span {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 34px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  font-size: 0.75rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.weekday-pill input:checked + span {
  background: var(--primary);
  border-color: var(--primary-hover);
  color: #ffffff;
}

/* --- Responsive Layout Rules --- */
@media (max-width: 1024px) {
  .grid-two-cols {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  #calendar-section {
    flex-direction: column;
    overflow-y: auto;
  }
  .sidebar-filters {
    width: 100%;
    height: auto;
    flex-shrink: 0;
  }
  .main-header {
    flex-direction: column;
    height: auto;
    padding: 1rem;
    gap: 0.75rem;
  }
  .header-left, .header-right {
    width: 100%;
    justify-content: space-between;
    gap: 0.5rem;
  }
  .main-nav {
    overflow-x: auto;
  }
  .calendar-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .controls-left {
    justify-content: space-between;
  }
  .controls-right button {
    width: 100%;
  }
}