/* css/components.css */

/* 1. Portal Headers */
.portal-header {
  padding: 32px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #312E81 100%);
  border-radius: var(--radius-lg);
  color: var(--color-bg-card);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.portal-header.student-theme {
  background: linear-gradient(135deg, #6366F1 0%, #4338CA 100%);
}

.portal-header::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 180px;
  height: 180px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.portal-header h1 {
  color: var(--color-bg-card);
  font-size: 32px;
  margin-top: 8px;
}

.portal-header p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.admin-badge {
  background-color: var(--color-accent);
  color: var(--color-bg-card);
}

.student-badge {
  background-color: var(--color-warning);
  color: var(--color-text-main);
}

/* Stat Widget Cards */
.stats-overview {
  display: flex;
  gap: 16px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  text-align: center;
  min-width: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.stat-num {
  font-family: var(--font-family-heading);
  font-size: 28px;
  font-weight: 700;
}

.stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* 2. Custom Tabs buttons */
.admin-tabs, .student-tabs {
  display: flex;
  gap: 8px;
  background-color: #e2e8f0;
  padding: 6px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  overflow-x: auto;
}

.tab-btn, .s-tab-btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text-muted);
  background-color: transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn.active, .s-tab-btn.active {
  background-color: var(--color-bg-card);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* 3. Grid Layouts */
.admin-panel-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  align-items: start;
}

.admin-panel-grid.single-col {
  grid-template-columns: 1fr;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.panel-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.panel-card h3 {
  font-size: 18px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.5;
}

/* 4. Interactive Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-main);
  outline: none;
  transition: var(--transition-fast);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--color-primary);
  background-color: var(--color-bg-card);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.vocab-pair-row {
  display: flex;
  gap: 8px;
}

/* Buttons styling */
.primary-btn, .secondary-btn, .success-btn, .game-btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.primary-btn {
  background-color: var(--color-primary);
  color: var(--color-bg-card);
}
.primary-btn:hover {
  background-color: #4338CA;
  transform: translateY(-2px);
  box-shadow: var(--shadow-button);
}

.secondary-btn {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}
.secondary-btn:hover {
  background-color: #E0E7FF;
}

.success-btn {
  background-color: var(--color-success);
  color: var(--color-bg-card);
}
.success-btn:hover {
  background-color: #059669;
  transform: translateY(-2px);
}

.full-btn {
  width: 100%;
}
.inline-btn {
  width: auto;
}

/* Utility spacers */
.margin-top { margin-top: 16px; }
.margin-top-lg { margin-top: 24px; }
.margin-top-sm { margin-top: 8px; }
.margin-bottom { margin-bottom: 16px; }
.margin-bottom-sm { margin-bottom: 8px; }
.hidden { display: none !important; }
.text-center { text-align: center; }

/* 5. Custom Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

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

.data-table th {
  padding: 12px 16px;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
}

.data-table td {
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.enroll-date {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 3px;
}

.contact-detail {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Badges for score / stars */
.stars-badge {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
  padding: 4px 10px;
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 13px;
}

.status-badge {
  padding: 4px 10px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 600;
}

.status-badge.present {
  background-color: var(--color-success-light);
  color: var(--color-success);
}
.status-badge.absent {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
}
.status-badge.late {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}
.status-badge.unmarked, .status-badge.pending {
  background-color: var(--color-border);
  color: var(--color-text-muted);
}
.status-badge.progress, .status-badge.submitted {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.score-badge {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 14px;
}
.score-badge.pass {
  background-color: var(--color-success-light);
  color: var(--color-success);
}
.score-badge.fail {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
}

/* 6. Modals & Overlays */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(30, 41, 59, 0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s ease;
}

.modal-box {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  overflow: hidden;
  animation: modal-enter 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-box.game-box {
  max-width: 800px;
}

@keyframes modal-enter {
  0% { transform: scale(0.9) translateY(20px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.close-modal-btn {
  font-size: 28px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--color-text-muted);
}
.close-modal-btn:hover {
  color: var(--color-danger);
}

.modal-body {
  padding: 24px;
  max-height: 80vh;
  overflow-y: auto;
}

/* 7. Toast Alerts popup */
.toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--color-text-main);
  color: var(--color-bg-card);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  z-index: 200;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
}

.toast-notification.visible {
  transform: translateY(0);
  opacity: 1;
}

.toast-body {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

/* 8. Game CSS styles */
/* Flashcards Flip styling */
.game-wrapper {
  background: var(--color-bg-main);
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.progress-bar-container {
  width: 100%;
  height: 8px;
  background-color: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 6px;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: 4px;
  transition: width 0.3s ease;
}
.progress-bar-fill.success {
  background-color: var(--color-success);
}

.card-scene {
  perspective: 800px;
  margin: 40px auto;
  width: 320px;
  height: 220px;
}

.card-element {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  cursor: pointer;
}

.card-element.is-flipped {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.card-front {
  background-color: var(--color-bg-card);
}

.card-back {
  background-color: var(--color-primary-light);
  transform: rotateY(180deg);
}

.vocab-lang-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.vocab-word {
  font-size: 36px;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 24px;
}

.vocab-translation {
  font-size: 36px;
  color: var(--color-text-main);
  font-weight: 700;
  margin-bottom: 24px;
}

.audio-btn {
  padding: 8px 16px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-xl);
  border: none;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
}
.audio-btn:hover {
  background-color: #E0E7FF;
}

.flip-hint {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 16px;
}

.card-actions {
  display: flex;
  gap: 12px;
}

.game-complete-actions {
  margin-top: 24px;
}

/* Matching Game grid */
.match-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.match-column h4 {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--color-text-muted);
}

.cards-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.match-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  text-align: center;
  user-select: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.match-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.match-card.selected {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.match-card.matched {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success);
  cursor: default;
  transform: none;
  opacity: 0.6;
}

.match-card.incorrect {
  background-color: var(--color-danger-light);
  border-color: var(--color-danger);
  color: var(--color-danger);
  animation: shake 0.3s linear;
}

/* 9. Mail Logger Drawer Panel */
.email-logger-trigger-btn {
  position: fixed;
  bottom: 24px;
  left: 24px;
  background-color: var(--color-text-main);
  color: var(--color-bg-card);
  padding: 12px 20px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.15);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 90;
  border: 1px solid var(--color-border);
  transition: var(--transition-normal);
}

.email-logger-trigger-btn:hover {
  background-color: var(--color-primary);
  transform: scale(1.05);
}

.email-badge {
  background-color: var(--color-danger);
  color: var(--color-bg-card);
  border-radius: 50%;
  padding: 2px 6px;
  font-size: 10px;
  font-weight: 700;
}

.email-logger-drawer-box {
  position: fixed;
  top: 0;
  right: -420px;
  width: 400px;
  height: 100%;
  background: var(--color-bg-card);
  border-left: 1px solid var(--color-border);
  box-shadow: -10px 0 30px rgba(0,0,0,0.08);
  z-index: 150;
  display: flex;
  flex-direction: column;
  transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.email-logger-drawer-box.open {
  right: 0;
}

.email-logger-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.email-list-container {
  flex-grow: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background-color: var(--color-bg-main);
}

.email-log-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.email-log-header {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  border-bottom: 1px dashed var(--color-border);
  padding-bottom: 4px;
}

.email-log-subject {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--color-primary);
}

.email-log-body {
  font-size: 12px;
  color: var(--color-text-main);
  white-space: pre-line;
  line-height: 1.4;
  background-color: var(--color-bg-main);
  padding: 8px;
  border-radius: 4px;
}

.empty-state-small {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
  margin-top: 40px;
}

/* ==========================================================================
   LANDING PAGE & AUTHENTICATION STYLES
   ========================================================================== */

body.landing-active .app-container {
  display: none !important;
}

body.landing-active .email-logger-trigger-btn {
  display: none !important;
}

body:not(.landing-active) .landing-page-container {
  display: none !important;
}

.landing-page-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family-base);
}

/* Crossfading background carousel track */
.sliding-bg-wrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.sliding-bg-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.bg-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  filter: brightness(0.4) contrast(1.05);
  opacity: 0;
  animation: crossfade 18s linear infinite;
}

.bg-slide:nth-child(1) {
  animation-delay: 0s;
}

.bg-slide:nth-child(2) {
  animation-delay: -12s; /* 6s offset in 18s cycle */
}

.bg-slide:nth-child(3) {
  animation-delay: -6s; /* 12s offset in 18s cycle */
}

/* Smooth crossfade keyframes for 3 layered backgrounds */
@keyframes crossfade {
  0% {
    opacity: 1;
  }
  22.22% {
    opacity: 1;
  }
  33.33% {
    opacity: 0;
  }
  88.88% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

/* Landing overlay content container */
.landing-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  color: white;
  text-align: center;
}

.landing-header {
  margin-top: auto;
  margin-bottom: 40px;
}

.landing-header h1 {
  font-size: 42px;
  color: white;
  text-shadow: 0 4px 20px rgba(0,0,0,0.6);
  font-family: var(--font-family-heading);
  margin-bottom: 16px;
  font-weight: 700;
}

.landing-header p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 2px 10px rgba(0,0,0,0.6);
  max-width: 650px;
  margin: 0 auto;
}

.landing-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

.landing-logo-img {
  width: 80px;
  height: 80px;
  background-color: white;
  border-radius: 50%;
  padding: 4px;
  object-fit: contain;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.landing-logo-text {
  font-size: 44px;
  font-weight: 700;
  color: var(--color-warning);
  text-shadow: 0 4px 15px rgba(0,0,0,0.5);
  font-family: var(--font-family-heading);
}

.landing-footer {
  margin-top: auto;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
  letter-spacing: 0.5px;
}

/* Large Interactive 3D Circles styling */
.portal-circles-container {
  display: flex;
  gap: 64px;
  justify-content: center;
  margin-bottom: auto;
  width: 100%;
  flex-wrap: wrap;
}

.portal-circle {
  perspective: 1200px;
  width: 250px;
  height: 250px;
  cursor: pointer;
  position: relative;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.portal-circle:hover {
  transform: scale(1.05);
}

/* Glowing, spinning ring on hover */
.portal-circle::before {
  content: '';
  position: absolute;
  top: -16px;
  left: -16px;
  right: -16px;
  bottom: -16px;
  border-radius: 50%;
  border: 4px dashed transparent;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  transform: scale(0.9);
  pointer-events: none;
  z-index: 1;
}

#circle-student::before {
  border-color: var(--color-primary);
  filter: drop-shadow(0 0 10px rgba(79, 70, 229, 0.6));
}

#circle-teacher::before {
  border-color: var(--color-primary);
  filter: drop-shadow(0 0 10px rgba(79, 70, 229, 0.6));
}

#circle-admin::before {
  border-color: var(--color-primary);
  filter: drop-shadow(0 0 10px rgba(79, 70, 229, 0.6));
}

.portal-circle:hover::before {
  opacity: 1;
  transform: scale(1);
  animation: spin-ring 12s linear infinite;
}

@keyframes spin-ring {
  0% { transform: scale(1) rotate(0deg); }
  100% { transform: scale(1) rotate(360deg); }
}

.circle-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  z-index: 2;
}

/* Hover rotation animation */
.portal-circle:hover .circle-inner {
  transform: rotateY(180deg);
}

.portal-circle:hover .circle-front {
  pointer-events: none;
}

.portal-circle:not(:hover) .circle-back {
  pointer-events: none;
}

.circle-front, .circle-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  border: 1.5px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.circle-front {
  background: rgba(255, 255, 255, 0.08);
  color: white;
}

.circle-back {
  color: white;
  transform: rotateY(180deg);
}

.student-inner .circle-back {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.9) 0%, rgba(67, 56, 202, 0.95) 100%);
}

.teacher-inner .circle-back {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.9) 0%, rgba(49, 46, 129, 0.95) 100%);
}

.admin-inner .circle-back {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.9) 0%, rgba(49, 46, 129, 0.95) 100%);
}

.circle-icon {
  font-size: 56px;
  margin-bottom: 12px;
}

.circle-front h2 {
  font-size: 18px;
  font-weight: 700;
  color: white;
  margin-bottom: 6px;
  font-family: var(--font-family-heading);
}

.circle-back p {
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.95);
}

.circle-back h3 {
  color: white;
  font-size: 16px;
  margin-bottom: 6px;
}

.circle-enter-btn {
  background-color: var(--color-warning);
  color: var(--color-text-main) !important;
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  margin-top: 8px;
  display: inline-block;
  text-decoration: none;
}

.circle-enter-btn:hover {
  background-color: #ea9209;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.6);
}

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

/* Styled login card modal */
.login-box-card {
  max-width: 420px !important;
  width: 100% !important;
  border-radius: var(--radius-lg) !important;
  background-color: var(--color-bg-card) !important;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25) !important;
  border: 1px solid var(--color-border);
}

.login-error-msg {
  color: var(--color-danger);
  font-size: 13px;
  font-weight: 600;
  background-color: var(--color-danger-light);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  text-align: left;
}

/* Profile badge at top bar */
.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-primary-light);
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

#user-profile-avatar {
  font-size: 18px;
}

#user-profile-name {
  font-weight: 700;
  font-size: 13px;
  color: var(--color-primary);
}

/* Sidebar separators and items */
.nav-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 12px 16px;
  opacity: 0.5;
}

.logout-link {
  color: var(--color-danger) !important;
}

.logout-link:hover {
  background-color: var(--color-danger-light) !important;
}

/* ==========================================================================
   DOCUMENT SHARING & FILE UPLOADS
   ========================================================================== */

.file-sharing-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}

.file-upload-form-box {
  background-color: var(--color-primary-light);
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.file-upload-header-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 12px;
}

.shared-file-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.shared-file-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.file-info-area {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 80%;
}

.file-icon {
  font-size: 26px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.file-name-label {
  font-weight: 700;
  font-size: 13px;
  color: var(--color-text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-desc-label {
  font-size: 11px;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

.file-size-label {
  font-size: 10px;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: 1px;
}

.file-actions-area {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-file-download {
  background-color: var(--color-primary);
  color: white;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s, background-color 0.2s;
  box-shadow: var(--shadow-sm);
}

.btn-file-download:hover {
  background-color: #3b37c8;
  transform: scale(1.05);
}

.btn-file-delete {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s, background-color 0.2s;
}

.btn-file-delete:hover {
  background-color: var(--color-danger);
  color: white;
  transform: scale(1.05);
}

.empty-files-text {
  font-size: 12px;
  color: var(--color-text-muted);
  font-style: italic;
  padding: 8px 0;
}

/* ==========================================================================
   RESPONSIVE DESIGN SYSTEM (MOBILE & TABLET ADJUSTMENTS)
   ========================================================================== */

@media (max-width: 992px) {
  /* Stack administrative and student grids */
  .admin-panel-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .grid-2 {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 768px) {
  /* Portal Header Responsive Styling */
  .portal-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px;
    gap: 16px;
  }
  
  .portal-header h1 {
    font-size: 26px;
  }
  
  .portal-header p {
    font-size: 13px;
  }

  /* Star Rewards Chest Container positioning */
  .stars-chest-container {
    align-self: center;
    margin-top: 8px;
  }

  /* Quick stats grid */
  .student-quick-stats {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .stat-widget {
    padding: 16px;
  }

  /* Class & Homework cards stack styling */
  .hw-item-card, .class-item-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
  }

  .hw-item-left, .class-item-info {
    max-width: 100%;
    width: 100%;
  }

  .hw-item-right, .class-item-status {
    width: 100%;
    align-items: flex-start;
    border-top: 1px dashed var(--color-border);
    padding-top: 12px;
    margin-top: 4px;
  }
  
  .hw-item-actions-wrap {
    width: 100%;
  }
  
  .hw-item-actions-wrap button, 
  .hw-item-actions-wrap span,
  .class-item-status button {
    width: 100%;
    display: flex;
    justify-content: center;
  }

  /* Evolution progress widgets */
  .evolution-metrics-container {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  /* Attendance options button list */
  .attendance-options {
    flex-wrap: wrap;
    gap: 6px;
  }

  .att-opt-btn {
    padding: 4px 8px;
    font-size: 11px;
  }

  /* Landing Page specific adjustments */
  .landing-header h1 {
    font-size: 28px;
  }

  .landing-logo-img {
    width: 60px;
    height: 60px;
  }

  .landing-logo-text {
    font-size: 30px;
  }

  .portal-circles-container {
    gap: 32px;
  }

  .portal-circle {
    width: 210px;
    height: 210px;
  }

  .circle-front, .circle-back {
    padding: 18px;
  }

  .circle-icon {
    font-size: 44px;
    margin-bottom: 6px;
  }

  .circle-front h2 {
    font-size: 16px;
  }

  .circle-back p {
    font-size: 11px;
    line-height: 1.4;
    margin-bottom: 10px;
  }

  .circle-enter-btn {
    padding: 6px 16px;
    font-size: 12px;
  }

  /* Flashcards adaptive sizing */
  .card-scene {
    width: 100%;
    max-width: 290px;
    height: 200px;
  }
  
  .vocab-word, .vocab-translation {
    font-size: 28px;
  }

  /* Word Match columns stacking helper */
  .match-columns {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .match-card {
    padding: 12px 16px;
    font-size: 14px;
  }

  /* Modals adaptive sizes */
  .modal-box {
    width: 95%;
  }

  .modal-body {
    padding: 16px;
  }
}

/* --- Referral Button & Landing Page --- */
.refer-btn {
  background: linear-gradient(135deg, #f97316 0%, #d97706 100%);
  color: white !important;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(249, 115, 22, 0.2);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.refer-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(249, 115, 22, 0.35);
  background: linear-gradient(135deg, #ea580c 0%, #b45309 100%);
}

.referral-page-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url('../imagenes/refiere_bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 200;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  box-sizing: border-box;
}

.referral-page-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.65);
  z-index: 1;
}

.referral-page-logo-fixed {
  position: absolute;
  top: 24px;
  left: 24px;
  width: 160px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10;
  background-color: white;
  padding: 8px;
  box-sizing: border-box;
}

.referral-glass-card {
  position: relative;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
  z-index: 2;
  box-sizing: border-box;
  animation: modal-anim 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.referral-content {
  padding: 32px;
}

.referral-benefits-box {
  background-color: rgba(245, 158, 11, 0.1);
  border-left: 4px solid #f59e0b;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  text-align: left;
}

/* Visual Vibration / Shake for unread badge */
@keyframes buzz-vibe {
  0% { transform: translate(0, 0) rotate(0deg); }
  10% { transform: translate(-3px, 1px) rotate(-1deg); }
  20% { transform: translate(-1px, -1px) rotate(1deg); }
  30% { transform: translate(3px, 2px) rotate(0deg); }
  40% { transform: translate(1px, -1px) rotate(1deg); }
  50% { transform: translate(-1px, 2px) rotate(-1deg); }
  60% { transform: translate(-3px, 1px) rotate(0deg); }
  70% { transform: translate(2px, 1px) rotate(-1deg); }
  80% { transform: translate(-1px, -1px) rotate(1deg); }
  90% { transform: translate(2px, 2px) rotate(0deg); }
  100% { transform: translate(1px, -2px) rotate(-1deg); }
}

.buzz-vibe-shake {
  animation: buzz-vibe 0.5s ease-in-out;
  animation-iteration-count: 2;
  background-color: var(--color-danger) !important;
  color: #ffffff !important;
  box-shadow: 0 0 15px var(--color-danger);
}

/* Adjust email trigger button positioning relative to sidebar width */
.email-logger-trigger-btn {
  left: calc(var(--sidebar-width) + 24px) !important;
  transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform var(--transition-fast), background-color var(--transition-fast) !important;
}

/* Referral details notification card style for teacher dashboard */
.notification-card {
  border-left: 4px solid var(--color-warning);
  background-color: rgba(245, 158, 11, 0.05);
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .referral-page-logo-fixed {
    position: static;
    margin: 0 auto 16px auto;
    width: 120px;
    display: block;
  }
  .referral-page-container {
    flex-direction: column;
    justify-content: flex-start;
    padding: 20px 12px;
  }
  .referral-content {
    padding: 20px 16px;
  }
}

/* Mobile hamburger button */
.mobile-menu-toggle-btn {
  display: none;
}

.sidebar-backdrop {
  display: none;
}

/* Eagle Vision Banner */
.eagle-vision-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: linear-gradient(135deg, #b45309 0%, #78350f 100%);
  color: white;
  font-size: 14px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  z-index: 1010;
  border-bottom: 2px solid #d97706;
  box-sizing: border-box;
  flex-shrink: 0;
}

.exit-eagle-btn {
  background: white;
  color: #78350f;
  border: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.exit-eagle-btn:hover {
  background-color: #fef3c7;
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  /* Landing page vertical scroll fixes */
  .landing-page-container {
    position: relative !important;
    height: auto !important;
    min-height: 100vh !important;
    overflow-y: auto !important;
  }
  .landing-content {
    height: auto !important;
    min-height: 100vh !important;
    padding: 24px 16px !important;
    justify-content: flex-start !important;
  }
  .sliding-bg-wrap {
    position: fixed !important;
    height: 100vh !important;
    width: 100vw !important;
  }

  /* Hamburger toggle and backdrop */
  body:not(.landing-active) .mobile-menu-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 16px;
    left: 16px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 24px;
    cursor: pointer;
    z-index: 1100;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
    transition: all 0.2s ease;
  }
  
  body:not(.landing-active) .mobile-menu-toggle-btn:active {
    transform: scale(0.95);
  }

  .sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(2px);
    z-index: 1020;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .sidebar-backdrop.active {
    display: block;
    opacity: 1;
    pointer-events: auto;
  }

  /* Email trigger repositioning when drawer is closed on mobile */
  .email-logger-trigger-btn {
    left: 16px !important;
    bottom: 16px !important;
  }
  
  /* Slide transition for email drawer */
  #email-logger-drawer {
    width: 100% !important;
    max-width: 100% !important;
  }

  /* Teacher dashboard top grid styling */
  .teacher-dashboard-top-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
}