/* 
   Student Habit-Tracking Portal Design System
   A SaaS-style dashboard containing layouts, typography, charts, dark-theme transitions, and micro-animations.
*/

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Variables for Light Mode */
:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Colors */
  --primary-hue: 258;
  --primary: hsl(var(--primary-hue), 76%, 62%);
  --primary-light: hsl(var(--primary-hue), 76%, 95%);
  --primary-hover: hsl(var(--primary-hue), 76%, 54%);
  --success: hsl(150, 76%, 40%);
  --success-light: hsl(150, 76%, 95%);
  --warning: hsl(356, 75%, 55%);
  --warning-light: hsl(356, 75%, 95%);
  --info: hsl(200, 80%, 48%);
  --info-light: hsl(200, 80%, 94%);
  
  --bg-primary: hsl(220, 30%, 97%);
  --bg-secondary: hsl(0, 0%, 100%);
  --bg-sidebar: hsl(224, 30%, 94%);
  
  --text-primary: hsl(224, 35%, 15%);
  --text-secondary: hsl(224, 15%, 45%);
  --text-muted: hsl(224, 10%, 65%);
  
  --border-color: hsl(224, 20%, 90%);
  --border-focus: hsl(var(--primary-hue), 76%, 75%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08);
  
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-blur: 16px;

  --sidebar-width: 260px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --transition-speed: 0.3s;
}

/* CSS Variables for Dark Mode */
body.dark-theme {
  --bg-primary: hsl(224, 25%, 8%);
  --bg-secondary: hsl(224, 25%, 12%);
  --bg-sidebar: hsl(224, 25%, 10%);
  
  --primary-light: hsl(var(--primary-hue), 40%, 18%);
  --success-light: hsl(150, 40%, 14%);
  --warning-light: hsl(356, 40%, 16%);
  --info-light: hsl(200, 45%, 14%);
  
  --text-primary: hsl(220, 20%, 92%);
  --text-secondary: hsl(220, 10%, 70%);
  --text-muted: hsl(220, 10%, 48%);
  
  --border-color: hsl(224, 18%, 20%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
  
  --glass-bg: rgba(20, 24, 33, 0.75);
  --glass-border: rgba(255, 255, 255, 0.07);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow: hidden;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* App Containers */
.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  position: relative;
}

/* Auth Screens */
.auth-wrapper {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg-primary);
  transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
}

.auth-wrapper.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-lg);
  width: 100%;
  max-width: 440px;
  padding: 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--primary), var(--info));
}

.auth-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 30px;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  padding: 12px;
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.auth-tab.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  margin-bottom: -2px;
}

.form-group {
  text-align: left;
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.input-field {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.input-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), hsl(var(--primary-hue), 76%, 52%));
  color: #fff;
  border: none;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(108, 92, 231, 0.3);
}

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

/* Sidebar Navigation */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100vh;
  flex-shrink: 0;
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.sidebar-logo {
  padding: 30px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--info));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-family: var(--font-heading);
  font-size: 1.2rem;
}

.sidebar-logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 16px;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-item i {
  font-size: 1.15rem;
  width: 20px;
  text-align: center;
}

.nav-item:hover, .nav-item.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

.nav-item.active {
  box-shadow: var(--shadow-sm);
}

/* User Card Bottom Sidebar */
/* ── Account page ──────────────────────────────────────────── */
.acct-profile-card {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.acct-profile-hero {
  display: flex;
  align-items: center;
  gap: 20px;
}

.acct-big-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, hsl(200,70%,70%), hsl(258,70%,76%));
  color: var(--primary);
  font-weight: 800;
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(99,102,241,.25);
}

.acct-profile-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.acct-display-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.acct-username-tag {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.acct-goals-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.acct-goals-sub {
  margin: -8px 0 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.acct-goal-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: var(--bg-secondary, rgba(0,0,0,.03));
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.acct-goal-title-input {
  font-weight: 600;
}

.acct-goal-body-input {
  resize: vertical;
  min-height: 90px;
  font-size: 0.93rem;
  line-height: 1.55;
}

.acct-goal-add-btn {
  align-self: flex-end;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  font-size: 0.88rem;
}

/* Goals list */
.acct-goals-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.acct-goal-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: box-shadow 0.18s ease;
}

.acct-goal-item:hover {
  box-shadow: var(--shadow-sm);
}

.acct-goal-bullet {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 6px;
  opacity: 0.75;
}

.acct-goal-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.acct-goal-title {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word;
}

.acct-goal-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.acct-goal-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.acct-goal-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: color 0.18s, background 0.18s;
}

.acct-goal-delete:hover {
  color: var(--danger, #ef4444);
  background: rgba(239, 68, 68, 0.08);
}

.acct-goals-empty {
  text-align: center;
  padding: 28px 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.acct-goals-empty i {
  font-size: 1.8rem;
  opacity: 0.4;
}

.acct-stats-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin: 0;
}

.acct-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 900px) {
  .acct-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .acct-profile-hero { flex-direction: column; align-items: flex-start; }
  .acct-stats-grid { grid-template-columns: 1fr; }
}

/* ── Profile card (sidebar bottom) ────────────────────────── */
.user-profile-section {
  padding: 20px 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.user-profile-info {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  /* make it a clickable button */
  background: none;
  border: none;
  cursor: pointer;
  border-radius: 10px;
  padding: 6px 8px;
  margin: -6px -8px;
  text-align: left;
  flex: 1;
  min-width: 0;
  color: inherit;
  transition: background 0.18s ease, box-shadow 0.18s ease;
}

.user-profile-info:hover {
  background: var(--border-color);
}

.user-profile-info:hover .user-avatar {
  box-shadow: 0 0 0 3px var(--primary-light, rgba(99,102,241,.25));
}

.user-profile-info:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, hsl(200, 70%, 80%), hsl(258, 70%, 85%));
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.user-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-name {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.user-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-action-small {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-action-small:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

/* Main Area */
.main-content {
  flex-grow: 1;
  height: 100vh;
  overflow-y: auto;
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.view-section {
  display: none;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.view-section.active {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

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

/* Header bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-title-group h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.page-title-group p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 4px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle-btn {
  width: 44px;
  height: 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: 1.2rem;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.theme-toggle-btn:hover {
  border-color: var(--primary);
  transform: scale(1.05);
}

.btn-primary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--primary), hsl(var(--primary-hue), 76%, 55%));
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(108, 92, 231, 0.15);
  transition: all 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.25);
}

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

/* Glass Cards & Layout Grid */
.grid-container-3x1 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.grid-container-2x1 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

@media (max-width: 1024px) {
  .grid-container-2x1 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  padding: 24px;
  position: relative;
  transition: box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.card.card-hover:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-focus);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title-sub {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* Stats Badges */
.stat-card-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* Text side must be able to shrink so it never bleeds into the icon */
.stat-card-body > div:first-child {
  min-width: 0;
  flex: 1 1 0;
  overflow: hidden;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  /* Fade the number out before the icon rather than hard-clip */
  -webkit-mask-image: linear-gradient(to right, black 75%, transparent 100%);
          mask-image: linear-gradient(to right, black 75%, transparent 100%);
}

.stat-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  /* Fade long subtitles (e.g. habit names) out before reaching the icon */
  -webkit-mask-image: linear-gradient(to right, black 70%, transparent 100%);
          mask-image: linear-gradient(to right, black 70%, transparent 100%);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0; /* icon never squishes */
}

.stat-icon.primary { background: var(--primary-light); color: var(--primary); }
.stat-icon.success { background: var(--success-light); color: var(--success); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }
.stat-icon.info { background: var(--info-light); color: var(--info); }

/* Checklist Component */
.checklist-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checklist-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  transition: all 0.2s ease;
}

.checklist-item:hover {
  border-color: var(--border-focus);
  transform: translateX(4px);
}

.checklist-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Premium Animated Checkbox */
.custom-checkbox-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.checkbox-input {
  position: absolute;
  opacity: 0;
  width: 24px;
  height: 24px;
  cursor: pointer;
  z-index: 2;
}

.checkbox-visual {
  width: 24px;
  height: 24px;
  border: 2px solid var(--text-muted);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  background: transparent;
  pointer-events: none;
  z-index: 1;
}

.checkbox-visual svg {
  width: 14px;
  height: 14px;
  stroke: white;
  stroke-width: 3.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  stroke-dasharray: 20;
  stroke-dashoffset: 20;
  transition: stroke-dashoffset 0.25s cubic-bezier(0.16, 1, 0.3, 1) 0.05s;
}

.checkbox-input:checked ~ .checkbox-visual {
  background-color: var(--success);
  border-color: var(--success);
  animation: checkbox-bounce 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.checkbox-input:checked ~ .checkbox-visual svg {
  stroke-dashoffset: 0;
}

.checkbox-input:focus ~ .checkbox-visual {
  box-shadow: 0 0 0 3px var(--primary-light);
}

@keyframes checkbox-bounce {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.habit-details-wrap {
  display: flex;
  flex-direction: column;
}

.habit-name-txt {
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease, text-decoration 0.2s ease;
}

.checkbox-input:checked ~ .habit-details-wrap .habit-name-txt {
  color: var(--text-muted);
  text-decoration: line-through;
}

.habit-meta-txt {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.item-actions {
  display: flex;
  gap: 6px;
}

/* Calendar Grid Matrix styling */
.calendar-grid-card {
  overflow: hidden;
}

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

.view-btn-group {
  display: flex;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 3px;
}

.view-btn {
  padding: 8px 16px;
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-btn.active {
  background: var(--bg-secondary);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.grid-scroller {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: center;
}

.matrix-table th, .matrix-table td {
  border: 1px solid var(--border-color);
  padding: 10px;
  min-width: 44px;
}

.matrix-table th:first-child, .matrix-table td:first-child {
  position: sticky;
  left: 0;
  background: var(--bg-secondary);
  font-weight: 600;
  text-align: left;
  min-width: 150px;
  z-index: 10;
  border-right: 2px solid var(--border-color);
}

.matrix-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  font-family: var(--font-heading);
}

.date-header-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.date-day-num {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.date-day-name {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.grid-cell-interactive {
  cursor: pointer;
  transition: background-color 0.15s ease;
  position: relative;
}

.grid-cell-interactive:hover {
  background-color: var(--primary-light);
}

.grid-indicator {
  width: 22px;
  height: 22px;
  margin: 0 auto;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1.5px solid transparent;
}

.grid-indicator.empty {
  border-color: var(--border-color);
  background: var(--bg-secondary);
}

.grid-indicator.checked {
  background-color: var(--success);
  color: #fff;
  transform: scale(1.05);
}

.grid-indicator.disabled {
  background-color: transparent;
  border: none;
  color: var(--text-muted);
  opacity: 0.15;
  cursor: not-allowed;
}

.grid-indicator.checked svg {
  width: 12px;
  height: 12px;
  stroke: white;
  stroke-width: 3.5;
  fill: none;
}

/* Charts Elements Styling */
.chart-container {
  width: 100%;
  height: 260px;
  position: relative;
  margin-top: 10px;
}

.svg-chart {
  width: 100%;
  height: 100%;
  display: block;
}

.chart-tooltip {
  position: absolute;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-md);
  font-size: 0.75rem;
  font-weight: 500;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 100;
}

/* Subject Trackers Styling */
.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.subject-card {
  cursor: pointer;
}

.subject-score-stat {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-heading);
  margin: 10px 0;
}

.subject-trend-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 20px;
}

.subject-trend-indicator.up {
  background: var(--success-light);
  color: var(--success);
}

.subject-trend-indicator.down {
  background: var(--warning-light);
  color: var(--warning);
}

.subject-trend-indicator.neutral {
  background: var(--border-color);
  color: var(--text-secondary);
}

/* Subject detail page layout */
.subject-detail-container {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .subject-detail-container {
    grid-template-columns: 1fr;
  }
}

.notes-editor {
  width: 100%;
  height: 250px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--border-radius-sm);
  padding: 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  resize: vertical;
  outline: none;
}

.notes-editor:focus {
  border-color: var(--primary);
}

.notes-status {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
  text-align: right;
}

/* Score entries manager */
.score-log-list {
  max-height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.score-log-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: var(--bg-primary);
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
}

.score-log-val {
  font-weight: 700;
  font-family: var(--font-heading);
}

.score-log-date {
  color: var(--text-secondary);
}

/* To-Do View Board */
.todo-columns-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .todo-columns-container {
    grid-template-columns: 1fr;
  }
}

.todo-column {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 400px;
}

.todo-column-header {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 12px;
}

.todo-badge {
  background: var(--border-color);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 12px;
}

.todo-list-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-grow: 1;
}

.todo-card-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 14px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  transition: all 0.2s ease;
}

.todo-card-item:hover {
  transform: translateY(-2px);
  border-color: var(--border-focus);
}

/* Journal Styling */
.journal-layout-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .journal-layout-grid {
    grid-template-columns: 1fr;
  }
}

.journal-editor-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.journal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.journal-date-input {
  padding: 10px 14px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
}

.journal-textarea {
  width: 100%;
  height: 380px;
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  resize: none;
  outline: none;
}

.journal-date-input:focus-visible,
.journal-textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.journal-search-box {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.journal-results-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 400px;
  overflow-y: auto;
}

.journal-result-item {
  padding: 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.journal-result-item:hover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.journal-result-date {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.journal-result-snippet {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Modals Overlay Styling */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1100;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 500px;
  padding: 30px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

/* Selection Badges for Days Grid */
.weekdays-selector {
  display: flex;
  gap: 8px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.weekday-badge {
  padding: 8px 12px;
  border-radius: 20px;
  border: 1.5px solid var(--border-color);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-primary);
  user-select: none;
  transition: all 0.2s ease;
}

.weekday-badge.selected {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.weekday-badge:hover {
  transform: scale(1.03);
}

/* Toast Notifications Container */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1200;
}

.toast {
  padding: 14px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 5px solid var(--primary);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-md);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

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

/* Confetti canvas */
#confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2000;
  width: 100vw;
  height: 100vh;
}

/* Helper flex layout utilities */
.form-actions-right {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.btn-secondary {
  padding: 12px 20px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-muted);
  text-align: center;
  font-size: 0.9rem;
  gap: 12px;
}

.empty-state i {
  font-size: 2.5rem;
  color: var(--border-color);
}

/* Sign In to Register slide animation styles */
.form-group#signup-name-group {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-bottom: 0;
  transform: translateY(-8px);
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
              opacity 0.3s ease, 
              margin-bottom 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.form-group#signup-name-group.visible {
  max-height: 100px;
  opacity: 1;
  margin-bottom: 20px;
  transform: translateY(0);
}

/* ── Toggle switch ── */
.switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 26px;
  flex-shrink: 0; /* never collapses in a flex row */
}
.switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  inset: 0;
  cursor: pointer;
  background-color: hsl(220, 13%, 78%);
  border-radius: 26px;
  transition: background-color 0.22s ease;
}
[data-theme="dark"] .slider {
  background-color: hsl(220, 13%, 35%);
}
.slider::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  left: 4px;
  top: 4px;
  background-color: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
  transition: transform 0.22s ease;
}
.switch input:checked + .slider {
  background-color: var(--primary);
}
.switch input:checked + .slider::before {
  transform: translateX(20px);
}
.switch input:focus-visible + .slider {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ── Danger button ── */
.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  background-color: var(--warning);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.93rem;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: opacity 0.18s ease, transform 0.12s ease;
}
.btn-danger:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}
.btn-danger:active {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   PRIVACY & SECURITY PAGE
   ===================================================== */

/* Coloured icon helpers */
.priv-icon-primary { color: var(--primary);  margin-right: 8px; }
.priv-icon-info    { color: var(--info);     margin-right: 8px; }
.priv-icon-success { color: var(--success);  margin-right: 8px; }
.priv-icon-warning { color: var(--warning);  margin-right: 4px; }

/* Two-column grid (stacks on small screens) */
.priv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

/* Each card gets flex-column layout */
.priv-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Toggle rows ── */
.priv-toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}
.priv-toggle-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.priv-toggle-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.priv-toggle-sub {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* ── Sub-sections (Data Portability, Sync) ── */
.priv-subsection {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.priv-subsection--bordered {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}
.priv-subsection-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}
.priv-subsection-body {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* ── Button rows ── */
.priv-btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.priv-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  font-size: 0.875rem;
}
.priv-btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  font-size: 0.83rem;
}
/* ── Sync code box ── */
.priv-sync-box {
  margin-top: 6px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.priv-sync-expires {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
}
.priv-text-warning { color: var(--warning); }
.priv-sync-warning-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--warning);
  margin: 0;
}
.priv-sync-code-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.priv-sync-code-value {
  font-family: monospace;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--primary);
}
.priv-hint-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
  display: flex;
  align-items: flex-start;
  gap: 5px;
  line-height: 1.4;
}
.priv-used-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Sync input area ── */
.priv-sync-input-area {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.priv-sync-input-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.priv-code-input {
  max-width: 150px;
  text-transform: uppercase;
  font-family: monospace;
  letter-spacing: 0.15em;
  font-size: 1.2rem;
  text-align: center;
}

/* ── Storage info box ── */
.priv-storage-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: background var(--transition-speed);
}
.priv-storage-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 16px;
  border-bottom: 1px dashed var(--border-color);
}
.priv-storage-row--last {
  border-bottom: none;
}
.priv-storage-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}
.priv-storage-value {
  font-weight: 700;
  font-size: 0.9rem;
}
.priv-storage-value--primary { color: var(--primary); }
.priv-storage-value--warning { color: var(--warning); }

/* ── Danger zone ── */
.priv-danger-zone {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: auto;
  padding: 16px;
  background: var(--warning-light);
  border: 1px solid hsl(356, 75%, 80%);
  border-radius: var(--border-radius-sm);
}
[data-theme="dark"] .priv-danger-zone {
  border-color: hsl(356, 40%, 30%);
}
.priv-danger-title {
  font-size: 0.93rem;
  font-weight: 700;
  color: var(--warning);
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
}
.priv-btn-full {
  width: 100%;
}

/* ── Privacy framework card ── */
.priv-framework-card {
  margin-top: 24px;
}
.priv-framework-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  line-height: 1.65;
  color: var(--text-secondary);
  font-size: 0.93rem;
  margin-top: 12px;
}
.priv-framework-body p { margin: 0; }

/* ===== DAILY SCHEDULE ===== */

.schedule-grid-wrapper {
  overflow: auto;
  max-height: calc(100vh - 280px);
  min-height: 300px;
}

.schedule-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 720px;
  table-layout: fixed;
}

.schedule-table th,
.schedule-table td {
  border: 1px solid var(--border-color);
}

/* Sticky top-left corner */
.schedule-time-header {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 3;
  background: var(--bg-sidebar);
  width: 78px;
  min-width: 78px;
  border-right: 2px solid var(--border-color);
  border-bottom: 2px solid var(--border-color);
}

/* Sticky day header row */
.schedule-day-header {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg-sidebar);
  text-align: center;
  padding: 10px 6px;
  min-width: 110px;
  border-bottom: 2px solid var(--border-color);
  transition: background var(--transition-speed);
}

.schedule-day-header.today {
  background: var(--primary-light);
}

.schedule-day-header.today .schedule-day-name,
.schedule-day-header.today .schedule-day-date {
  color: var(--primary);
}

.schedule-day-name {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.schedule-day-date {
  display: block;
  font-size: 0.76rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 2px;
}

/* Sticky time column */
.schedule-time-label {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--bg-sidebar);
  padding: 6px 10px;
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  width: 78px;
  min-width: 78px;
  vertical-align: top;
  text-align: right;
  border-right: 2px solid var(--border-color);
  transition: background var(--transition-speed);
}

/* Schedule cell */
.schedule-cell {
  vertical-align: top;
  height: 56px;
  padding: 3px 4px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.schedule-cell:hover {
  background-color: var(--primary-light);
}

/* Entry chip inside cell */
.schedule-entry-chip {
  display: block;
  border-radius: 5px;
  padding: 3px 7px;
  margin-bottom: 2px;
  cursor: pointer;
  overflow: hidden;
  transition: opacity 0.15s ease, transform 0.12s ease;
  border-left: 3px solid transparent;
}

.schedule-entry-chip:hover {
  opacity: 0.82;
  transform: scale(1.02);
}

.entry-chip-time {
  display: block;
  font-size: 0.66rem;
  font-weight: 600;
  opacity: 0.75;
  margin-bottom: 1px;
  line-height: 1.2;
}

.entry-chip-title {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

/* Category colour variants (chips in grid) */
.cat-class   { background: var(--primary-light); color: var(--primary);   border-left-color: var(--primary); }
.cat-study   { background: var(--info-light);    color: var(--info);      border-left-color: var(--info); }
.cat-personal{ background: var(--success-light); color: var(--success);   border-left-color: var(--success); }
.cat-break   { background: var(--bg-primary);    color: var(--text-muted);border-left-color: var(--border-color); }
.cat-sports  { background: var(--warning-light); color: var(--warning);   border-left-color: var(--warning); }

/* ── Schedule modal ── */
.sched-modal-box { max-width: 520px; }

/* Datetime layout: date full-width, then start + end side-by-side */
.sched-datetime-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
/* Date field spans both columns */
.sched-datetime-row .form-group:first-child {
  grid-column: 1 / -1;
}

/* Icon-prefixed inputs */
.input-icon-wrap {
  position: relative;
}
.input-prefix-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.82rem;
  pointer-events: none;
  z-index: 1;
}
.input-with-icon {
  padding-left: 32px !important;
}

/* Optional label hint */
.label-optional {
  font-weight: 400;
  font-size: 0.77rem;
  color: var(--text-muted);
  margin-left: 3px;
}

/* ── Category pill picker ── */
.sched-cat-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 6px;
}

.sched-cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border-radius: 20px;
  border: 1.5px solid transparent;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  line-height: 1;
  transition: opacity 0.13s, box-shadow 0.15s, transform 0.1s;
}
.sched-cat-pill:hover { opacity: 0.8; transform: translateY(-1px); }

/* Built-in pills reuse cat-* bg/color; just need a visible border */
.sched-cat-pill.cat-class    { border-color: var(--primary); }
.sched-cat-pill.cat-study    { border-color: var(--info); }
.sched-cat-pill.cat-personal { border-color: var(--success); }
.sched-cat-pill.cat-sports   { border-color: var(--warning); }
.sched-cat-pill.cat-break    { border-color: var(--border-color); }

/* Selected ring */
.sched-cat-pill.selected {
  box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px currentColor;
  opacity: 1 !important;
  transform: none !important;
}

/* "+ Custom" dashed pill */
.sched-cat-add {
  background: transparent !important;
  color: var(--text-muted) !important;
  border: 1.5px dashed var(--border-color) !important;
}
.sched-cat-add:hover {
  color: var(--primary) !important;
  border-color: var(--primary) !important;
  opacity: 1 !important;
}

/* × delete button inside custom pill */
.sched-cat-x {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: currentColor;
  color: var(--bg-card);
  font-size: 0.65rem;
  line-height: 1;
  margin-left: 1px;
  opacity: 0.55;
  transition: opacity 0.13s;
  cursor: pointer;
  flex-shrink: 0;
}
.sched-cat-x:hover { opacity: 1; }

/* ── Inline custom-category creator ── */
.sched-custom-form {
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
  padding: 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
}
.sched-custom-name-input {
  font-size: 0.9rem !important;
  padding: 9px 12px !important;
}
.sched-color-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.sched-color-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2.5px solid transparent;
  cursor: pointer;
  transition: transform 0.14s, border-color 0.14s;
  flex-shrink: 0;
  outline: none;
}
.sched-color-dot:hover { transform: scale(1.18); }
.sched-color-dot:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.sched-color-dot.selected {
  border-color: var(--text-primary);
  transform: scale(1.18);
}
.sched-custom-actions {
  display: flex;
  gap: 8px;
}
.sched-btn-sm {
  padding: 7px 14px !important;
  font-size: 0.85rem !important;
}

/* Modal footer row */
.sched-modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
}

/* Native date/time inputs — match app font & colour scheme */
input[type="date"].input-field,
input[type="time"].input-field {
  min-height: 44px;
  color-scheme: light;
}
[data-theme="dark"] input[type="date"].input-field,
[data-theme="dark"] input[type="time"].input-field {
  color-scheme: dark;
}

/* ── Sign in with Replit button ── */
.btn-replit-auth {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  padding: 11px 18px;
  border-radius: var(--border-radius-sm);
  border: 1.5px solid #e07000;
  background: #F26207;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  letter-spacing: 0.01em;
}
.btn-replit-auth:hover {
  background: #d95800;
  box-shadow: 0 4px 14px rgba(242,98,7,0.35);
  transform: translateY(-1px);
}
.btn-replit-auth:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-replit-auth__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Required field asterisk */
.required-star {
  color: var(--danger, #EF4444);
  margin-left: 2px;
  font-weight: 700;
}

/* ── Mobile modal fixes ── */
@media (max-width: 600px) {
  /* Stack date + time inputs vertically */
  .sched-datetime-row {
    grid-template-columns: 1fr;
  }
  .sched-datetime-row .form-group:first-child {
    grid-column: 1;
  }

  /* Tighter modal inner padding */
  .modal-box {
    padding: 20px 16px !important;
  }

  /* Footer: stack delete below save/cancel */
  .sched-modal-footer {
    flex-direction: column-reverse;
    gap: 10px;
    align-items: stretch;
  }
  .sched-modal-footer .form-actions-right {
    display: flex;
    gap: 8px;
    margin-left: 0 !important;
  }
  .sched-modal-footer .form-actions-right button {
    flex: 1;
  }
  #btn-schedule-delete {
    width: 100%;
    justify-content: center;
  }

  /* Pill picker wraps more naturally */
  .sched-cat-picker {
    gap: 6px;
  }
  .sched-cat-pill {
    font-size: 0.75rem;
    padding: 5px 9px;
  }
}

/* Legend bar */
.schedule-legend {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  align-items: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

.schedule-legend-hint {
  margin-left: auto;
  font-size: 0.80rem;
  color: var(--text-muted);
}


/* =====================================================
   COMPACT NAV — top bar with icon rail + hamburger
   Shows on every size below full desktop (≤ 1100 px).
   Full sidebar is only visible above 1100 px.
   ===================================================== */

/* ── Top bar (hidden on full desktop) ── */
.mobile-top-bar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  padding: 0 10px 0 12px;
  gap: 16px;
  z-index: 150;
  box-shadow: var(--shadow-sm);
}

/* ── Mobile logo title ── */
.mobile-logo-text {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Hamburger button ── */
.hamburger-btn {
  width: 38px;
  height: 38px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
  color: var(--text-primary);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.hamburger-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}
.hamburger-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.hamburger-btn.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-btn.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger-btn.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Theme toggle at the far right of the mobile top bar */
.topbar-theme-btn {
  flex-shrink: 0;
  margin-left: auto;
}

/* ── Sidebar backdrop overlay ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 190;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.sidebar-overlay.is-open { display: block; }

/* ══════════════════════════════════════════════════
   ≤ 1100 px  — sidebar becomes an off-screen overlay;
                top bar with icon rail is visible
   ══════════════════════════════════════════════════ */
@media (max-width: 1100px) {

  .mobile-top-bar { display: flex; }

  /* Sidebar slides in over content */
  .sidebar {
    position: fixed;
    top: 0; left: 0;
    height: 100%;
    width: 280px;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.28s ease;
  }
  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: 4px 0 32px rgba(0, 0, 0, 0.2);
  }

  /* Content fills the full width; push below the fixed bar */
  .main-content {
    padding: 72px 32px 40px;
    height: auto;
    min-height: 100vh;
  }

  /* Hide the in-page theme toggle — it lives in the top bar now */
  #theme-toggle-btn { display: none !important; }
}

/* ══════════════════════════════════════════════════
   ≤ 768 px  — small phones: tighten layout
   ══════════════════════════════════════════════════ */
@media (max-width: 768px) {

  .main-content {
    padding: 68px 16px 32px;
  }

  .page-title-group h1 { font-size: 1.5rem; }
  .page-title-group p  { font-size: 0.88rem; }

  .top-bar { flex-wrap: wrap; gap: 10px; }
  .header-controls { flex-wrap: wrap; gap: 8px; }

  .card { padding: 16px; }

  /* Collapse multi-column grids to single column */
  .grid-container-3x1,
  .grid-container-2x1   { grid-template-columns: 1fr; }
  .todo-columns-container { grid-template-columns: 1fr; }
  .journal-layout-grid    { grid-template-columns: 1fr; }
  .subject-detail-container { grid-template-columns: 1fr; }

  /* Modals slide up as a bottom sheet */
  .modal-box {
    width: calc(100vw - 32px) !important;
    max-width: none !important;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    margin: 0;
  }
  .modal-overlay.active { align-items: flex-end; padding-bottom: 0; }
  .modal-overlay.active .modal-box {
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    transform: translateY(0);
  }

  /* Schedule: horizontal scroll rather than squishing */
  .schedule-grid-wrapper { overflow-x: auto; max-height: none; }
  .schedule-table { min-width: 560px; }
  .schedule-legend { gap: 10px; }
  .schedule-legend-hint { display: none; }
}