/* ============================================================
   Kidello – Main Stylesheet
   Design: 3D press style, bold borders, child-friendly
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Urbanist:wght@400;600;700;800;900&display=swap');

/* ============================================================
   Variables
   ============================================================ */
:root {
  --bg-color:       #f0f8ff;
  --text-dark:      #2c3e50;
  --border-dark:    #2c3e50;

  --green-main:     #4CAF50;
  --green-shadow:   #2E7D32;

  --orange-main:    #FF9800;
  --orange-shadow:  #E65100;

  --red-main:       #F44336;
  --red-shadow:     #B71C1C;

  --blue-main:      #2196F3;
  --blue-shadow:    #0D47A1;

  --purple-main:    #9C27B0;
  --purple-shadow:  #6A1B9A;

  --yellow-main:    #FFEB3B;
  --yellow-shadow:  #F57F17;

  --teal-main:      #009688;
  --teal-shadow:    #00695C;

  --white:          #ffffff;
  --card-radius:    20px;
  --btn-radius:     16px;
  --input-radius:   14px;
  --sidebar-bg:     #1a1a2e;
  --sidebar-text:   #a0aec0;
  --sidebar-active: #2196F3;
  --transition:     all 0.1s ease;
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Urbanist', 'Segoe UI', sans-serif;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-dark);
  background: var(--bg-color);
  margin: 0;
}

h1, h2, h3, h4, h5, h6 { font-weight: 900; color: var(--text-dark); }
a { color: var(--blue-main); transition: color .2s; text-decoration: none; }
a:hover { color: var(--blue-shadow); }

/* ============================================================
   3D BUTTONS — core component
   ============================================================ */
.btn {
  font-family: 'Urbanist', sans-serif;
  font-weight: 800;
  font-size: 16px;
  padding: 11px 26px;
  border: 3px solid var(--border-dark);
  border-radius: var(--btn-radius);
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  line-height: 1;
}

.btn:active { transform: translateY(7px); }

/* Primary – blue */
.btn-primary {
  background-color: var(--blue-main);
  color: var(--white);
  box-shadow: 0 7px 0 var(--blue-shadow);
}
.btn-primary:hover { background-color: #1e88e5; color: var(--white); }
.btn-primary:active { box-shadow: 0 0 0 var(--border-dark); color: var(--white); }

/* Success – green */
.btn-success {
  background-color: var(--green-main);
  color: var(--white);
  box-shadow: 0 7px 0 var(--green-shadow);
}
.btn-success:hover { background-color: #43a047; color: var(--white); }
.btn-success:active { box-shadow: 0 0 0 var(--border-dark); color: var(--white); }

/* Danger – red */
.btn-danger {
  background-color: var(--red-main);
  color: var(--white);
  box-shadow: 0 7px 0 var(--red-shadow);
}
.btn-danger:hover { background-color: #e53935; color: var(--white); }
.btn-danger:active { box-shadow: 0 0 0 var(--border-dark); color: var(--white); }

/* Warning – orange */
.btn-warning {
  background-color: var(--orange-main);
  color: var(--white);
  box-shadow: 0 7px 0 var(--orange-shadow);
}
.btn-warning:hover { background-color: #fb8c00; color: var(--white); }
.btn-warning:active { box-shadow: 0 0 0 var(--border-dark); color: var(--white); }

/* Secondary – dark outline */
.btn-secondary {
  background-color: var(--white);
  color: var(--text-dark);
  box-shadow: 0 7px 0 var(--border-dark);
}
.btn-secondary:hover { background-color: #f0f0f0; color: var(--text-dark); }
.btn-secondary:active { box-shadow: 0 0 0 var(--border-dark); color: var(--text-dark); }

/* Info – teal */
.btn-info {
  background-color: var(--teal-main);
  color: var(--white);
  box-shadow: 0 7px 0 var(--teal-shadow);
}
.btn-info:hover { background-color: #00897b; color: var(--white); }
.btn-info:active { box-shadow: 0 0 0 var(--border-dark); color: var(--white); }

/* Light – pale */
.btn-light {
  background-color: #f5f5f5;
  color: var(--text-dark);
  box-shadow: 0 7px 0 #bdbdbd;
}
.btn-light:active { box-shadow: 0 0 0 var(--border-dark); }

/* Size variants */
.btn-sm {
  font-size: 13px;
  padding: 7px 16px;
  border-width: 2px;
  border-radius: 12px;
}
.btn-sm:active { transform: translateY(5px); }

.btn-lg {
  font-size: 20px;
  padding: 16px 40px;
  border-width: 4px;
  border-radius: 20px;
}
.btn-lg:active { transform: translateY(8px); }

/* Full width helper */
.btn.w-100 { justify-content: center; }

/* ============================================================
   3D CARDS / PANELS
   ============================================================ */
.card, .kidello-card {
  background-color: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 0 #b3d9ff;
  padding: 24px;
  transition: box-shadow 0.15s, transform 0.15s;
}

.card:hover { transform: translateY(-3px); box-shadow: 0 11px 0 #b3d9ff; }

.card-header {
  background: transparent;
  border-bottom: 3px solid var(--border-dark);
  padding-bottom: 14px;
  margin-bottom: 16px;
  font-weight: 900;
  font-size: 18px;
}

/* Color variants for cards */
.card-green  { box-shadow: 0 8px 0 var(--green-shadow); border-color: var(--border-dark); }
.card-blue   { box-shadow: 0 8px 0 var(--blue-shadow);  border-color: var(--border-dark); }
.card-orange { box-shadow: 0 8px 0 var(--orange-shadow); border-color: var(--border-dark); }
.card-red    { box-shadow: 0 8px 0 var(--red-shadow);    border-color: var(--border-dark); }
.card-purple { box-shadow: 0 8px 0 var(--purple-shadow); border-color: var(--border-dark); }

/* ============================================================
   3D INPUTS
   ============================================================ */
.form-control, .form-select, .kidello-input {
  font-family: 'Urbanist', sans-serif;
  font-weight: 700;
  font-size: 16px;
  padding: 13px 16px;
  border: 3px solid var(--border-dark);
  border-radius: var(--input-radius);
  background-color: #fafafa;
  box-shadow: inset 0 4px 0 rgba(0, 0, 0, 0.06);
  outline: none;
  width: 100%;
  color: var(--text-dark);
  transition: border-color 0.15s, background-color 0.15s;
}

.form-control:focus, .form-select:focus, .kidello-input:focus {
  border-color: var(--blue-main);
  background-color: var(--white);
  box-shadow: inset 0 4px 0 rgba(0, 0, 0, 0.04), 0 0 0 3px rgba(33, 150, 243, 0.15);
  outline: none;
}

.form-label {
  font-weight: 800;
  font-size: 15px;
  color: var(--text-dark);
  margin-bottom: 7px;
  display: block;
}

.label-icon { margin-right: 5px; }

textarea.form-control { min-height: 100px; resize: vertical; }

/* ============================================================
   3D ALERTS / FLASH MESSAGES
   ============================================================ */
.alert {
  font-family: 'Urbanist', sans-serif;
  font-weight: 800;
  font-size: 16px;
  border: 4px solid var(--border-dark);
  border-radius: 18px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.alert-success {
  background-color: var(--green-main);
  color: var(--white);
  box-shadow: 0 6px 0 var(--green-shadow);
}
.alert-danger {
  background-color: var(--red-main);
  color: var(--white);
  box-shadow: 0 6px 0 var(--red-shadow);
}
.alert-warning {
  background-color: var(--yellow-main);
  color: var(--text-dark);
  box-shadow: 0 6px 0 var(--yellow-shadow);
}
.alert-info {
  background-color: var(--blue-main);
  color: var(--white);
  box-shadow: 0 6px 0 var(--blue-shadow);
}

.alert .btn-close {
  margin-left: auto;
  filter: invert(1) brightness(2);
  opacity: 0.9;
}
.alert-warning .btn-close { filter: none; opacity: 0.7; }

/* ============================================================
   3D BADGES
   ============================================================ */
.badge, .kidello-badge {
  font-family: 'Urbanist', sans-serif;
  font-weight: 900;
  font-size: 13px;
  padding: 5px 13px;
  border-radius: 50px;
  border: 2px solid var(--border-dark);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.badge.bg-primary   { background-color: var(--blue-main)  !important; box-shadow: 0 4px 0 var(--blue-shadow);   color: #fff; }
.badge.bg-success   { background-color: var(--green-main)  !important; box-shadow: 0 4px 0 var(--green-shadow);  color: #fff; }
.badge.bg-danger    { background-color: var(--red-main)    !important; box-shadow: 0 4px 0 var(--red-shadow);    color: #fff; }
.badge.bg-warning   { background-color: var(--orange-main) !important; box-shadow: 0 4px 0 var(--orange-shadow); color: #fff; }
.badge.bg-info      { background-color: var(--teal-main)   !important; box-shadow: 0 4px 0 var(--teal-shadow);   color: #fff; }
.badge.bg-secondary { background-color: #607d8b !important; box-shadow: 0 4px 0 #37474f; color: #fff; }

/* Role badges */
.role-badge-developer { background: var(--purple-main); color: #fff; }
.role-badge-admin     { background: var(--red-main);    color: #fff; }
.role-badge-teacher   { background: var(--blue-main);   color: #fff; }
.role-badge-student   { background: var(--green-main);  color: #fff; }

/* ============================================================
   TABLES
   ============================================================ */
.table-kidello {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  background: var(--white);
  border: 3px solid var(--border-dark);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: 0 6px 0 #b3d9ff;
}

.table-kidello thead th {
  background: var(--text-dark);
  color: var(--white);
  font-weight: 900;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 14px 18px;
  border: none;
}

.table-kidello tbody td {
  padding: 13px 18px;
  border-bottom: 2px solid #e8edf0;
  font-weight: 700;
  vertical-align: middle;
}

.table-kidello tbody tr:last-child td { border-bottom: none; }
.table-kidello tbody tr:hover { background-color: #f0f8ff; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  min-height: 100vh;
  background: var(--sidebar-bg);
  border-right: 4px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 1000;
  transition: transform 0.25s ease, width 0.25s ease;
  overflow: hidden;
}

.sidebar-header {
  padding: 20px 22px;
  border-bottom: 3px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.sidebar-brand .brand-icon { font-size: 28px; }
.sidebar-brand .brand-text {
  font-size: 22px;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.5px;
}

.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 22px;
  color: var(--sidebar-text);
  font-weight: 800;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  border-left: 4px solid transparent;
  margin: 2px 10px 2px 0;
  border-radius: 0 12px 12px 0;
}

.sidebar-link:hover {
  background: rgba(255,255,255,0.08);
  color: var(--white);
}

.sidebar-link.active {
  background: var(--blue-main);
  color: var(--white);
  border-left-color: var(--white);
  box-shadow: 4px 4px 0 var(--blue-shadow);
}

.nav-icon { font-size: 20px; width: 24px; text-align: center; }
.nav-label { flex: 1; }

.sidebar-divider {
  height: 3px;
  background: rgba(255,255,255,0.08);
  margin: 10px 20px;
  border-radius: 2px;
}

/* Student boards list in sidebar */
.sidebar-section-label {
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.35);
  padding: 6px 22px 4px;
}

.sidebar-boards-list { gap: 0; }

.sidebar-board-link {
  padding: 9px 22px 9px 16px;
  font-size: 14px;
}

.sidebar-board-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.4);
  flex-shrink: 0;
}

.sidebar-board-link.active .sidebar-board-dot {
  border-color: #fff;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.3);
}

.sidebar-boards-empty {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
  padding: 6px 22px;
  font-style: italic;
  list-style: none;
}

.sidebar-join-link {
  padding: 8px 22px 8px 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.4) !important;
  border-style: dashed;
  margin-top: 4px;
}
.sidebar-join-link:hover { color: rgba(255,255,255,0.8) !important; }

/* Board view toggle in sidebar */
.sidebar-view-toggle {
  display: flex;
  gap: 6px;
  padding: 6px 14px 10px;
}

.sidebar-view-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 4px;
  background: rgba(255,255,255,0.07);
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  color: rgba(255,255,255,0.5);
  font-family: 'Urbanist', sans-serif;
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.1s;
  box-shadow: 0 3px 0 rgba(0,0,0,0.3);
}

.sidebar-view-btn .nav-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex: none;
}

.sidebar-view-btn:hover {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.85);
}

.sidebar-view-btn.active {
  background: var(--blue-main);
  border-color: #fff;
  color: #fff;
  box-shadow: 0 3px 0 var(--blue-shadow);
}

.sidebar-view-btn:active {
  transform: translateY(3px);
  box-shadow: 0 0 0 rgba(0,0,0,0.3);
}

/* Collapsed sidebar — hide boards and view toggle labels */
.sidebar.collapsed .sidebar-section-label,
.sidebar.collapsed .sidebar-boards-empty,
.sidebar.collapsed .sidebar-view-toggle .nav-label {
  display: none;
}
.sidebar.collapsed .sidebar-view-toggle {
  flex-direction: column;
  padding: 4px 6px 8px;
}
.sidebar.collapsed .sidebar-view-btn {
  font-size: 20px;
  padding: 8px;
}
.sidebar.collapsed .sidebar-board-dot {
  width: 14px;
  height: 14px;
}
.sidebar.collapsed .sidebar-board-link {
  justify-content: center;
  padding: 10px;
}

.sidebar-role-badge {
  margin: 8px 16px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.07);
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--sidebar-text);
  font-weight: 800;
  font-size: 14px;
}

.role-icon { font-size: 20px; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 3px solid rgba(255,255,255,0.1);
}

.btn-logout {
  width: 100%;
  justify-content: center;
  background: transparent;
  border: 3px solid rgba(255,255,255,0.25);
  color: var(--sidebar-text);
  border-radius: 14px;
  padding: 10px;
  font-weight: 800;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.btn-logout:hover { background: rgba(244,67,54,0.2); color: #ff8a80; border-color: rgba(244,67,54,0.4); }

/* Mobile sidebar */
.sidebar-toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 22px;
  display: none;
}
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
}

/* ============================================================
   TOP NAVBAR (app)
   ============================================================ */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.top-navbar {
  background: var(--white);
  border-bottom: 4px solid var(--border-dark);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 0 #b3d9ff;
}

.top-navbar-title {
  flex: 1;
  font-size: 22px;
  font-weight: 900;
  color: var(--text-dark);
}

.top-navbar-right { display: flex; align-items: center; gap: 12px; }

/* ============================================================
   AVATAR CIRCLES
   ============================================================ */
.avatar-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 15px;
  color: var(--white);
  box-shadow: 0 4px 0 var(--border-dark);
  flex-shrink: 0;
}

.avatar-circle-sm {
  width: 32px;
  height: 32px;
  font-size: 12px;
  border-width: 2px;
  box-shadow: 0 3px 0 var(--border-dark);
}

.avatar-xs {
  width: 26px;
  height: 26px;
  font-size: 10px;
  border-width: 2px;
  box-shadow: 0 2px 0 var(--border-dark);
}

.user-avatar-wrap { display: flex; align-items: center; gap: 10px; }
.avatar-name { font-weight: 800; font-size: 15px; color: var(--text-dark); }

/* ============================================================
   PAGE CONTENT
   ============================================================ */
.page-content { padding: 28px; flex: 1; }
.flash-container { padding: 16px 28px 0; }

/* ============================================================
   STAT CARDS (dashboard)
   ============================================================ */
.stat-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  padding: 22px 26px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: 0 7px 0 #b3d9ff;
  transition: transform 0.15s, box-shadow 0.15s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: 0 10px 0 #b3d9ff; }

.stat-icon {
  font-size: 36px;
  width: 60px;
  height: 60px;
  border-radius: 16px;
  border: 3px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon-blue   { background: var(--blue-main);   box-shadow: 0 5px 0 var(--blue-shadow);   }
.stat-icon-green  { background: var(--green-main);  box-shadow: 0 5px 0 var(--green-shadow);  }
.stat-icon-orange { background: var(--orange-main); box-shadow: 0 5px 0 var(--orange-shadow); }
.stat-icon-purple { background: var(--purple-main); box-shadow: 0 5px 0 var(--purple-shadow); }
.stat-icon-red    { background: var(--red-main);    box-shadow: 0 5px 0 var(--red-shadow);    }

.stat-value {
  font-size: 36px;
  font-weight: 900;
  line-height: 1;
  color: var(--text-dark);
}

.stat-label {
  font-size: 14px;
  font-weight: 700;
  color: #607d8b;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============================================================
   CLASS CARDS
   ============================================================ */
.class-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: 0 8px 0 #b3d9ff;
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: var(--text-dark);
}
.class-card:hover { transform: translateY(-4px); box-shadow: 0 12px 0 #b3d9ff; color: var(--text-dark); }

.class-card-header {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 4px solid var(--border-dark);
  font-size: 36px;
}

.class-card-stripe {
  height: 8px;
  /* clipped cleanly by overflow:hidden on .class-card */
}

.class-card-body { padding: 18px 20px; }
.class-card-name { font-size: 18px; font-weight: 900; margin-bottom: 6px; }
.class-card-meta { font-size: 13px; font-weight: 700; color: #607d8b; }

.class-card-footer {
  padding: 12px 16px;
  border-top: 3px solid var(--border-dark);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  background: #fafafa;
}

/* ============================================================
   KANBAN BOARD
   ============================================================ */
.kanban-wrapper {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 8px 4px 20px;
  align-items: flex-start;
  min-height: 60vh;
}

.kanban-column {
  min-width: 280px;
  max-width: 280px;
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 0 #b3d9ff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.kanban-col-header {
  padding: 14px 16px;
  border-bottom: 3px solid var(--border-dark);
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: calc(var(--card-radius) - 4px) calc(var(--card-radius) - 4px) 0 0;
}

.kanban-col-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid var(--border-dark);
  flex-shrink: 0;
  box-shadow: 0 3px 0 var(--border-dark);
}

.kanban-col-name {
  flex: 1;
  font-weight: 900;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kanban-col-count {
  background: var(--text-dark);
  color: var(--white);
  border-radius: 50px;
  border: 2px solid var(--border-dark);
  padding: 2px 9px;
  font-size: 12px;
  font-weight: 900;
}

.kanban-tasks {
  padding: 12px;
  flex: 1;
  min-height: 80px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.kanban-tasks.drag-over {
  background: rgba(33, 150, 243, 0.08);
  border-radius: 12px;
}

/* Task cards */
.task-card {
  background: var(--white);
  border: 3px solid var(--border-dark);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: 0 5px 0 var(--border-dark);
  cursor: grab;
  transition: transform 0.1s, box-shadow 0.1s;
  position: relative;
}
.task-card:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--border-dark); }
.task-card.dragging { opacity: 0.5; cursor: grabbing; }

.task-card-title {
  font-weight: 900;
  font-size: 14px;
  margin-bottom: 8px;
  line-height: 1.3;
}

.task-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.task-priority {
  font-size: 11px;
  font-weight: 900;
  padding: 3px 9px;
  border-radius: 50px;
  border: 2px solid var(--border-dark);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.priority-high   { background: var(--red-main);   color: #fff; box-shadow: 0 3px 0 var(--red-shadow); }
.priority-normal { background: var(--blue-main);  color: #fff; box-shadow: 0 3px 0 var(--blue-shadow); }
.priority-low    { background: var(--green-main); color: #fff; box-shadow: 0 3px 0 var(--green-shadow); }

.task-due {
  font-size: 11px;
  font-weight: 800;
  color: #607d8b;
  display: flex;
  align-items: center;
  gap: 4px;
}
.task-due.overdue { color: var(--red-main); }

.task-color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--border-dark);
  flex-shrink: 0;
}

.task-card-actions {
  position: absolute;
  top: 8px; right: 8px;
  display: none;
  gap: 4px;
}
.task-card:hover .task-card-actions { display: flex; }

.task-card-actions a {
  font-size: 16px;
  text-decoration: none;
  line-height: 1;
}

/* Add column button */
.kanban-add-col {
  min-width: 220px;
  flex-shrink: 0;
}

/* Board kanban wrapper (used in show.php) */
.kanban-board {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 8px 4px 20px;
  align-items: flex-start;
  min-height: 60vh;
}

.kanban-column-header {
  padding: 14px 16px;
  border-bottom: 3px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.kanban-column-title {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  font-weight: 900;
  font-size: 14px;
}

.column-color-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--border-dark);
  flex-shrink: 0;
  box-shadow: 0 2px 0 var(--border-dark);
}

.column-task-count {
  background: var(--text-dark);
  color: var(--white);
  border-radius: 50px;
  border: 2px solid var(--border-dark);
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 900;
}

.task-card-label {
  height: 5px;
  margin: -12px -14px 10px;
  border-radius: 11px 11px 0 0;
}

.task-card-body { /* wraps content inside task card */ }

.task-card-desc {
  font-size: 12px;
  font-weight: 600;
  color: #607d8b;
  margin-bottom: 8px;
  line-height: 1.4;
}

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

.task-card-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.task-due-badge {
  font-size: 11px;
  font-weight: 800;
  color: #607d8b;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.task-due-badge.overdue  { color: var(--red-main); font-weight: 900; }
.task-due-badge.due-soon { color: var(--orange-main); }

.priority-badge {
  font-size: 11px;
  font-weight: 900;
  padding: 3px 9px;
  border-radius: 50px;
  border: 2px solid var(--border-dark);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  display: inline-block;
}
.priority-badge.priority-high   { background: var(--red-main);   color: #fff; box-shadow: 0 3px 0 var(--red-shadow); }
.priority-badge.priority-normal { background: var(--orange-main); color: #fff; box-shadow: 0 3px 0 var(--orange-shadow); }
.priority-badge.priority-low    { background: var(--green-main); color: #fff; box-shadow: 0 3px 0 var(--green-shadow); }

.task-edit-btn {
  font-size: 16px;
  text-decoration: none;
  color: #607d8b;
  line-height: 1;
  transition: color 0.1s;
}
.task-edit-btn:hover { color: var(--blue-main); }

.kanban-drop-hint {
  text-align: center;
  padding: 8px;
  font-size: 12px;
  font-weight: 800;
  color: #cfd8dc;
  border-top: 2px dashed #e0e0e0;
  transition: all 0.15s;
}
.kanban-column.drag-over .kanban-drop-hint {
  color: var(--blue-main);
  border-top-color: var(--blue-main);
}

.kanban-empty-col {
  text-align: center;
  padding: 20px 12px;
  color: #b0bec5;
  font-size: 14px;
  font-weight: 700;
  font-style: italic;
}

.empty-state-big {
  text-align: center;
  padding: 60px 30px;
  width: 100%;
}
.empty-state-big .empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
  display: block;
}

/* Ghost / XS buttons for kanban */
.btn-ghost {
  background: none;
  border: none;
  color: var(--sidebar-text);
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 8px;
  line-height: 1;
  transition: background 0.1s, color 0.1s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); color: var(--white); }

.btn-xs {
  font-size: 13px;
  padding: 4px 10px;
  border-width: 2px;
  border-radius: 8px;
}

/* ============================================================
   KEY CODE DISPLAY
   ============================================================ */
.key-code-display {
  background: var(--text-dark);
  color: var(--white);
  font-family: 'Urbanist', monospace;
  font-weight: 900;
  font-size: 24px;
  letter-spacing: 6px;
  padding: 14px 24px;
  border-radius: 14px;
  border: 3px solid var(--border-dark);
  box-shadow: 0 6px 0 rgba(0,0,0,0.4);
  display: inline-block;
  text-align: center;
}

.key-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 6px 0 var(--green-shadow);
  margin-bottom: 12px;
}

.key-card.inactive {
  opacity: 0.5;
  box-shadow: 0 6px 0 #9e9e9e;
}

/* ============================================================
   AUTH PAGES
   ============================================================ */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 40px 16px;
  background: var(--bg-color);
}

.auth-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: 28px;
  padding: 36px 32px;
  box-shadow: 0 10px 0 #b3d9ff;
  width: 100%;
}

.auth-header { text-align: center; margin-bottom: 28px; }
.auth-logo   { font-size: 56px; line-height: 1; margin-bottom: 10px; }
.auth-title  { font-size: 30px; font-weight: 900; color: var(--text-dark); margin: 0 0 6px; }
.auth-subtitle { font-size: 16px; color: #607d8b; font-weight: 700; margin: 0; }

.auth-footer { text-align: center; margin-top: 20px; font-weight: 700; }
.auth-link { font-weight: 900; color: var(--blue-main); }
.auth-link:hover { color: var(--blue-shadow); }

/* Demo accounts */
.demo-accounts {
  margin-top: 20px;
  background: #f0f8ff;
  border: 3px solid var(--border-dark);
  border-radius: 18px;
  padding: 16px;
  box-shadow: inset 0 3px 0 rgba(0,0,0,0.05);
}
.demo-title {
  font-size: 13px;
  font-weight: 800;
  color: #607d8b;
  text-align: center;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.demo-list { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }

.demo-btn {
  font-family: 'Urbanist', sans-serif;
  font-weight: 800;
  font-size: 13px;
  padding: 8px 16px;
  border: 3px solid var(--border-dark);
  border-radius: 12px;
  background: var(--white);
  color: var(--text-dark);
  cursor: pointer;
  box-shadow: 0 5px 0 var(--border-dark);
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.demo-btn:hover { background: #e3f2fd; }
.demo-btn:active { transform: translateY(5px); box-shadow: 0 0 0 var(--border-dark); }

/* ============================================================
   JOIN CLASS PAGE
   ============================================================ */
.join-class-page { max-width: 480px; margin: 40px auto; }

.key-input-big {
  font-family: 'Urbanist', sans-serif;
  font-weight: 900;
  font-size: 30px;
  letter-spacing: 8px;
  text-align: center;
  text-transform: uppercase;
  padding: 20px;
  border: 4px solid var(--border-dark);
  border-radius: 18px;
  background: #fafafa;
  box-shadow: inset 0 5px 0 rgba(0,0,0,0.07);
  width: 100%;
}
.key-input-big:focus {
  border-color: var(--blue-main);
  background: var(--white);
  outline: none;
  box-shadow: inset 0 5px 0 rgba(0,0,0,0.04), 0 0 0 4px rgba(33,150,243,0.15);
}

/* ============================================================
   PUBLIC NAVBAR
   ============================================================ */
.navbar-public {
  background: var(--white);
  border-bottom: 4px solid var(--border-dark);
  padding: 14px 0;
  box-shadow: 0 4px 0 #b3d9ff;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-public .brand-icon { font-size: 28px; }
.navbar-public .brand-text { font-size: 22px; font-weight: 900; color: var(--text-dark); }
.navbar-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }

.navbar-public .nav-link {
  font-weight: 800;
  color: var(--text-dark);
  padding: 8px 16px;
}
.navbar-public .nav-link:hover { color: var(--blue-main); }

/* ============================================================
   LANDING PAGE
   ============================================================ */
.hero-section {
  background: var(--white);
  border-bottom: 4px solid var(--border-dark);
  padding: 80px 0 70px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 40px,
    rgba(33,150,243,0.04) 40px,
    rgba(33,150,243,0.04) 80px
  );
}

.hero-title {
  font-size: 72px;
  font-weight: 900;
  color: var(--text-dark);
  margin: 0 0 10px;
  position: relative;
  line-height: 1;
}

.hero-title span {
  color: var(--blue-main);
  display: inline-block;
  text-shadow: 4px 4px 0 var(--blue-shadow);
}

.hero-subtitle {
  font-size: 22px;
  font-weight: 700;
  color: #607d8b;
  margin: 12px 0 36px;
  position: relative;
}

.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }

/* Feature cards on landing */
.feature-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: 0 8px 0 #b3d9ff;
  height: 100%;
  transition: transform 0.15s, box-shadow 0.15s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 0 #b3d9ff; }

.feature-icon {
  font-size: 48px;
  width: 80px;
  height: 80px;
  border-radius: 20px;
  border: 4px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.feature-icon-blue   { background: var(--blue-main);   box-shadow: 0 6px 0 var(--blue-shadow); }
.feature-icon-green  { background: var(--green-main);  box-shadow: 0 6px 0 var(--green-shadow); }
.feature-icon-orange { background: var(--orange-main); box-shadow: 0 6px 0 var(--orange-shadow); }
.feature-icon-purple { background: var(--purple-main); box-shadow: 0 6px 0 var(--purple-shadow); }

.feature-title { font-size: 20px; font-weight: 900; margin-bottom: 8px; }
.feature-desc  { font-size: 15px; font-weight: 600; color: #607d8b; margin: 0; }

/* Section styling */
.landing-section { padding: 70px 0; }
.landing-section-alt {
  padding: 70px 0;
  background: var(--white);
  border-top: 4px solid var(--border-dark);
  border-bottom: 4px solid var(--border-dark);
}

.section-title {
  font-size: 40px;
  font-weight: 900;
  text-align: center;
  margin-bottom: 10px;
  color: var(--text-dark);
}
.section-subtitle {
  font-size: 18px;
  text-align: center;
  color: #607d8b;
  font-weight: 700;
  margin-bottom: 50px;
}

/* Steps */
.step-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  padding: 28px 22px;
  text-align: center;
  box-shadow: 0 8px 0 #b3d9ff;
  position: relative;
}

.step-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 4px solid var(--border-dark);
  background: var(--blue-main);
  color: var(--white);
  font-size: 24px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  box-shadow: 0 5px 0 var(--blue-shadow);
}

/* Who section */
.who-card {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  padding: 28px 22px;
  text-align: center;
  box-shadow: 0 8px 0 var(--border-dark);
  height: 100%;
}
.who-card:nth-child(1) { box-shadow: 0 8px 0 var(--blue-shadow);   }
.who-card:nth-child(2) { box-shadow: 0 8px 0 var(--green-shadow);  }
.who-card:nth-child(3) { box-shadow: 0 8px 0 var(--orange-shadow); }

.who-icon { font-size: 52px; margin-bottom: 14px; display: block; }
.who-title { font-size: 22px; font-weight: 900; margin-bottom: 10px; }
.who-desc  { font-size: 15px; font-weight: 600; color: #607d8b; }

/* Public footer */
.public-footer {
  background: var(--text-dark);
  border-top: 4px solid var(--border-dark);
  padding: 32px 0;
  color: rgba(255,255,255,0.7);
  font-weight: 700;
}
.public-footer a { color: rgba(255,255,255,0.7); }
.public-footer a:hover { color: var(--white); }

/* ============================================================
   EMPTY STATES
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 0 #b3d9ff;
}
.empty-state-icon { font-size: 64px; margin-bottom: 16px; display: block; }
.empty-state-title { font-size: 24px; font-weight: 900; margin-bottom: 8px; }
.empty-state-text { font-size: 16px; color: #607d8b; font-weight: 700; margin-bottom: 24px; }

/* ============================================================
   MEMBER LIST
   ============================================================ */
.member-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--white);
  border: 3px solid var(--border-dark);
  border-radius: 14px;
  box-shadow: 0 4px 0 #b3d9ff;
  margin-bottom: 8px;
  transition: transform 0.1s;
}
.member-row:hover { transform: translateY(-2px); }
.member-info { flex: 1; }
.member-name { font-weight: 900; font-size: 15px; }
.member-sub  { font-size: 13px; color: #607d8b; font-weight: 700; }

/* ============================================================
   ACTIVITY LOG
   ============================================================ */
.log-row {
  padding: 10px 0;
  border-bottom: 2px dashed #e0e0e0;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  font-weight: 700;
}
.log-row:last-child { border-bottom: none; }
.log-action { color: var(--blue-main); font-weight: 900; }
.log-time { color: #9e9e9e; font-size: 12px; white-space: nowrap; }

/* ============================================================
   FORMS — layout helpers
   ============================================================ */
.form-section {
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  padding: 28px;
  box-shadow: 0 8px 0 #b3d9ff;
  margin-bottom: 24px;
}
.form-section-title {
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--border-dark);
}

/* Bootstrap modal overrides for Kidello style */
.kidello-modal {
  border: 4px solid var(--border-dark);
  border-radius: var(--card-radius);
  box-shadow: 0 10px 0 rgba(44,62,80,0.25);
}
.kidello-modal .modal-header {
  border-bottom: 3px solid var(--border-dark);
  font-weight: 900;
  font-size: 18px;
}
.kidello-modal .modal-footer {
  border-top: 3px solid var(--border-dark);
}

/* Color picker for columns */
.color-picker-wrap {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.color-option {
  cursor: pointer;
  position: relative;
}
.color-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.color-option input[type="radio"]:checked + .color-swatch {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--border-dark);
  outline: 3px solid var(--border-dark);
}

/* Color picker swatches */
.color-swatches { display: flex; gap: 10px; flex-wrap: wrap; }
.color-swatch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid var(--border-dark);
  cursor: pointer;
  box-shadow: 0 4px 0 var(--border-dark);
  transition: var(--transition);
}
.color-swatch:hover, .color-swatch.selected {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--border-dark);
}

/* Priority / label selects */
.priority-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 3px solid var(--border-dark);
  border-radius: 12px;
  cursor: pointer;
  font-weight: 800;
  font-size: 14px;
  background: var(--white);
  box-shadow: 0 4px 0 var(--border-dark);
  transition: var(--transition);
}
.priority-option:hover { transform: translateY(4px); box-shadow: 0 0 0 var(--border-dark); }

/* ============================================================
   SIDEBAR COLLAPSED STATE (desktop)
   ============================================================ */
.sidebar.collapsed { width: 68px; }
.sidebar.collapsed .nav-label        { display: none; }
.sidebar.collapsed .brand-text       { display: none; }
.sidebar.collapsed .sidebar-role-badge { display: none; }
.sidebar.collapsed .sidebar-user     { display: none; }
.sidebar.collapsed .sidebar-link     { justify-content: center; padding: 13px 0; }
.sidebar.collapsed .nav-icon         { width: auto; }
.sidebar.collapsed .sidebar-collapse-btn .collapse-arrow { transform: rotate(180deg); }

.sidebar-collapse-btn {
  background: none;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 14px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.sidebar-collapse-btn:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.4); }
.sidebar-collapse-btn .collapse-arrow { transition: transform 0.25s ease; display: inline-block; }

.main-wrapper { margin-left: 240px; transition: margin-left 0.25s ease; }
.main-wrapper.expanded { margin-left: 68px; }

/* ============================================================
   SIDEBAR USER (bottom of sidebar)
   ============================================================ */
.sidebar-user {
  padding: 14px 16px;
  border-top: 3px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.sidebar-user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 13px;
  color: var(--white);
  flex-shrink: 0;
}

.sidebar-user-info { flex: 1; min-width: 0; overflow: hidden; }
.sidebar-user-name {
  font-size: 13px;
  font-weight: 900;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: 12px;
  font-weight: 700;
  color: var(--sidebar-text);
  white-space: nowrap;
}

/* ============================================================
   USER AVATAR BUTTON & DROPDOWN
   ============================================================ */
.user-avatar-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: 12px;
  transition: background 0.15s;
}
.user-avatar-btn:hover { background: rgba(0,0,0,0.05); }

.dropdown-chevron {
  font-size: 11px;
  color: #607d8b;
  transition: transform 0.2s;
}

.user-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 200;
  background: var(--white);
  border: 4px solid var(--border-dark);
  border-radius: 20px;
  box-shadow: 0 8px 0 rgba(44,62,80,0.25), 0 20px 40px rgba(0,0,0,0.12);
  min-width: 240px;
  overflow: hidden;
}

.user-dropdown.open { display: block; }

.user-dropdown-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: #f8fafd;
  border-bottom: 3px solid var(--border-dark);
}

.user-dropdown-info { flex: 1; min-width: 0; }
.user-dropdown-name {
  font-size: 15px;
  font-weight: 900;
  color: var(--text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-dropdown-role {
  font-size: 13px;
  font-weight: 700;
  color: #607d8b;
  margin-top: 2px;
}

.user-dropdown-divider {
  height: 3px;
  background: #f0f0f0;
  border-top: 2px solid #e0e0e0;
}

.user-dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 18px;
  color: var(--text-dark);
  font-weight: 800;
  font-size: 14px;
  text-decoration: none;
  transition: background 0.12s;
  cursor: pointer;
}
.user-dropdown-item:hover { background: #f0f8ff; color: var(--text-dark); }

.user-dropdown-item-danger { color: var(--red-main); }
.user-dropdown-item-danger:hover { background: #fff5f5; color: var(--red-main); }

.user-dropdown-item-icon {
  font-size: 18px;
  width: 26px;
  text-align: center;
  flex-shrink: 0;
}

/* ============================================================
   STUDENT LAYOUT — class panel + tasks panel
   ============================================================ */
.student-layout {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.student-class-panel {
  width: 224px;
  flex-shrink: 0;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.student-tasks-panel {
  flex: 1;
  min-width: 0;
}

/* Class panel items */
.class-panel-item {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--white);
  border: 3px solid var(--border-dark);
  border-radius: 16px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 5px 0 #b3d9ff;
  transition: transform 0.1s, box-shadow 0.1s;
  text-decoration: none;
  color: var(--text-dark);
}
.class-panel-item:hover { transform: translateY(-2px); box-shadow: 0 7px 0 #b3d9ff; }
.class-panel-item.active {
  border-color: var(--blue-main);
  box-shadow: 0 5px 0 var(--blue-shadow);
  background: #e3f2fd;
}

.class-panel-stripe {
  width: 8px;
  align-self: stretch;
  flex-shrink: 0;
}

.class-panel-content {
  flex: 1;
  padding: 10px 12px;
  min-width: 0;
}

.class-panel-name {
  font-size: 13px;
  font-weight: 900;
  color: var(--text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}

.class-panel-teacher {
  font-size: 11px;
  font-weight: 700;
  color: #607d8b;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.class-panel-count {
  background: var(--blue-main);
  color: var(--white);
  border-left: 3px solid var(--border-dark);
  padding: 0 10px;
  font-size: 13px;
  font-weight: 900;
  align-self: stretch;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.class-panel-join {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  margin-top: 4px;
  border: 3px dashed rgba(33,150,243,0.4);
  border-radius: 14px;
  color: var(--blue-main);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}
.class-panel-join:hover { background: #e3f2fd; border-color: var(--blue-main); color: var(--blue-main); }

/* ============================================================
   STUDENT TASK CARDS
   ============================================================ */
.task-section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: 14px;
  border: 3px solid var(--border-dark);
  margin-bottom: 12px;
  margin-top: 4px;
  font-size: 15px;
  font-weight: 900;
  color: var(--text-dark);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.task-section-count {
  margin-left: auto;
  background: rgba(0,0,0,0.18);
  color: var(--text-dark);
  border-radius: 50px;
  border: 2px solid rgba(0,0,0,0.15);
  padding: 2px 10px;
  font-size: 13px;
  font-weight: 900;
}

.student-task-card {
  background: var(--white);
  border: 3px solid var(--border-dark);
  border-left-width: 6px;
  border-radius: 16px;
  box-shadow: 0 5px 0 #b3d9ff;
  transition: transform 0.1s, box-shadow 0.1s;
  overflow: hidden;
}
.student-task-card:hover { transform: translateY(-2px); box-shadow: 0 7px 0 #b3d9ff; }

.student-task-card-inner { padding: 14px 16px; }

.student-task-title {
  font-size: 16px;
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.3;
}

.student-task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
}

.student-task-class-badge {
  background: #f0f8ff;
  border: 2px solid var(--border-dark);
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 900;
  color: var(--text-dark);
}

.student-task-due {
  font-size: 12px;
  font-weight: 800;
  color: #607d8b;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.student-task-due.overdue  { color: var(--red-main); }
.student-task-due.due-soon { color: var(--orange-main); }

.student-task-priority-badge {
  color: var(--white);
  border: 2px solid var(--border-dark);
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.student-task-column-badge {
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 900;
}

.task-card-wrapper { margin-bottom: 10px; }

/* ============================================================
   BOARD VIEW TOGGLE
   ============================================================ */
.board-view-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.view-btn {
  font-family: 'Urbanist', sans-serif;
  font-weight: 800;
  font-size: 14px;
  padding: 9px 18px;
  border: 3px solid var(--border-dark);
  border-radius: 12px;
  background: var(--white);
  color: var(--text-dark);
  cursor: pointer;
  box-shadow: 0 5px 0 var(--border-dark);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.view-btn:hover { background: #f0f8ff; }
.view-btn:active { transform: translateY(5px); box-shadow: 0 0 0 var(--border-dark); }
.view-btn.active {
  background: var(--blue-main);
  color: var(--white);
  box-shadow: 0 5px 0 var(--blue-shadow);
}
.view-btn.active:active { box-shadow: 0 0 0 var(--blue-shadow); }

/* Board grid view */
.board-grid-view {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.board-grid-card {
  background: var(--white);
  border: 3px solid var(--border-dark);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 6px 0 #b3d9ff;
  transition: transform 0.12s, box-shadow 0.12s;
}
.board-grid-card:hover { transform: translateY(-3px); box-shadow: 0 9px 0 #b3d9ff; }

/* Board list view */
.board-list-view {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.board-list-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: #f8fafd;
  border: 3px solid var(--border-dark);
  border-radius: 14px;
  margin-bottom: 6px;
  margin-top: 12px;
  font-weight: 900;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.board-list-group-header:first-child { margin-top: 0; }

.board-list-group-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--border-dark);
  flex-shrink: 0;
  box-shadow: 0 2px 0 var(--border-dark);
}

.board-list-group-count {
  margin-left: auto;
  background: var(--text-dark);
  color: var(--white);
  border-radius: 50px;
  border: 2px solid var(--border-dark);
  padding: 2px 9px;
  font-size: 12px;
  font-weight: 900;
}

.board-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--white);
  border: 3px solid #e0e0e0;
  border-radius: 12px;
  margin-bottom: 6px;
  margin-left: 16px;
  transition: border-color 0.1s, transform 0.1s;
}
.board-list-item:hover { border-color: var(--border-dark); transform: translateX(2px); }

.board-list-priority-stripe {
  width: 5px;
  align-self: stretch;
  border-radius: 3px;
  flex-shrink: 0;
}

.board-list-color-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--border-dark);
  flex-shrink: 0;
}

.board-list-item-content { flex: 1; min-width: 0; }
.board-list-item-title {
  font-weight: 900;
  font-size: 15px;
  color: var(--text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.board-list-item-desc {
  font-size: 13px;
  font-weight: 600;
  color: #607d8b;
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.board-list-item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991px) {
  .sidebar {
    transform: translateX(-100%);
    width: 260px !important;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-overlay.open { display: block; }
  .sidebar-toggle-btn { display: flex; }
  .main-wrapper { margin-left: 0 !important; }
  .sidebar-collapse-btn { display: none !important; }

  .hero-title { font-size: 48px; }
  .kanban-wrapper { padding-bottom: 12px; }
  .page-content { padding: 18px; }

  .student-layout { flex-direction: column; }
  .student-class-panel { width: 100%; position: static; max-height: none; }

  .board-grid-view { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
  .hero-title { font-size: 36px; }
  .auth-card { padding: 24px 20px; }
  .btn-lg { font-size: 17px; padding: 13px 28px; }
  .stat-card { padding: 16px 18px; }
  .stat-value { font-size: 28px; }
  .board-grid-view { grid-template-columns: 1fr; }
  .board-view-toggle { flex-wrap: wrap; }
}