/* 
   LOCAL DESIGN TOKENS
   These extend the global palette with attendance-specific values.
   Fallback values (after the comma) keep the page working even if
   the global stylesheet hasn't set a particular variable yet.
*/
:root {
  /* Status colours */
  --att-safe-color:    #22c55e; /* green  */
  --att-safe-bg:       #dcfce7;
  --att-warning-color: #f59e0b; /* amber  */
  --att-warning-bg:    #fef3c7;
  --att-danger-color:  #ef4444; /* red    */
  --att-danger-bg:     #fee2e2;

  /* Progress bar track */
  --att-track-bg: #e5e7eb;

  /* Card shadow */
  --att-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
  --att-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
  --att-safe-bg:    #14532d;
  --att-warning-bg: #78350f;
  --att-danger-bg:  #7f1d1d;
  --att-track-bg:   #374151;
  --att-shadow:      0 2px 12px rgba(0, 0, 0, 0.35);
  --att-shadow-hover:0 6px 20px rgba(0, 0, 0, 0.5);
}

/* 
   LAYOUT
 */
.attendance-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* 
   PAGE HEADER
 */
.attendance-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.attendance-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--text-color, #111827);
  margin: 0 0 0.5rem;
}

.attendance-subtitle {
  font-size: 1rem;
  color: var(--text-muted, #6b7280);
  margin: 0;
}

/* 
   SUMMARY CARD
 */
.summary-section {
  margin-bottom: 2rem;
}

.summary-card {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 1rem;
  background: var(--card-bg, #ffffff);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--att-shadow);
  border: 1px solid var(--border-color, #e5e7eb);
}

@media (max-width: 600px) {
  .summary-card {
    grid-template-columns: 1fr 1fr;
  }
}

.summary-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.3rem;
}

.summary-stat__value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-color, #111827);
  line-height: 1;
}

.summary-stat__label {
  font-size: 0.8rem;
  color: var(--text-muted, #6b7280);
  font-weight: 500;
}

/* 
   ADD SUBJECT FORM
 */
.form-section {
  margin-bottom: 2.5rem;
}

.form-card {
  background: var(--card-bg, #ffffff);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: var(--att-shadow);
  border: 1px solid var(--border-color, #e5e7eb);
}

.form-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-color, #111827);
  margin: 0 0 1.25rem;
}

.add-subject-form {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: 1rem;
  align-items: end;
}

@media (max-width: 680px) {
  .add-subject-form {
    grid-template-columns: 1fr 1fr;
  }

  .form-actions {
    grid-column: span 2;
  }

  #form-error {
    grid-column: span 2;
  }
}

@media (max-width: 420px) {
  .add-subject-form {
    grid-template-columns: 1fr;
  }

  .form-actions,
  #form-error {
    grid-column: span 1;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-color, #374151);
  letter-spacing: 0.02em;
}

.form-input {
  padding: 0.6rem 0.85rem;
  border: 1.5px solid var(--border-color, #d1d5db);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--text-color, #111827);
  background: var(--input-bg, var(--bg-color, #f9fafb));
  transition: border-color 0.18s, box-shadow 0.18s;
  outline: none;
  width: 100%;
  box-sizing: border-box;
}

.form-input:focus {
  border-color: var(--primary-color, #3b82f6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-input::placeholder {
  color: var(--text-muted, #9ca3af);
}

/* Hide browser spinners on number inputs — keeps UI clean */
.form-input[type="number"]::-webkit-inner-spin-button,
.form-input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.form-input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield; 
}

.form-error {
  font-size: 0.82rem;
  color: var(--att-danger-color);
  margin: 0;
  padding: 0.4rem 0;
  font-weight: 500;
}

/* 
   BUTTONS
    */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background 0.18s, color 0.18s, border-color 0.18s, box-shadow 0.18s, opacity 0.18s;
  white-space: nowrap;
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Primary */
.btn--primary {
  background: var(--primary-color, #3b82f6);
  color: #ffffff;
  border-color: var(--primary-color, #3b82f6);
}

.btn--primary:hover {
  opacity: 0.88;
  box-shadow: 0 3px 10px rgba(59, 130, 246, 0.35);
}

/* Secondary */
.btn--secondary {
  background: transparent;
  color: var(--text-color, #374151);
  border-color: var(--border-color, #d1d5db);
}

.btn--secondary:hover {
  background: var(--hover-bg, #f3f4f6);
}

/* Danger outline */
.btn--danger-outline {
  background: transparent;
  color: var(--att-danger-color);
  border-color: var(--att-danger-color);
}

.btn--danger-outline:hover {
  background: var(--att-danger-bg);
}

/* Small variant */
.btn--sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
}

/* Icon-only (used in subject cards) */
.btn--icon {
  padding: 0.4rem 0.6rem;
  background: transparent;
  border-color: transparent;
  color: var(--text-muted, #6b7280);
}

.btn--icon:hover {
  background: var(--hover-bg, #f3f4f6);
  color: var(--text-color, #111827);
}

/* 
   SUBJECTS SECTION
    */
.subjects-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.subjects-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-color, #111827);
  margin: 0;
}

.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* 
   EMPTY STATE
    */
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 1rem;
  text-align: center;
  color: var(--text-muted, #9ca3af);
  background: var(--card-bg, #ffffff);
  border: 2px dashed var(--border-color, #e5e7eb);
  border-radius: 12px;
}

.empty-state__icon {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  display: block;
}

.empty-state__text {
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* 
   SUBJECT CARD
    */
.subject-card {
  background: var(--card-bg, #ffffff);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--att-shadow);
  border: 1px solid var(--border-color, #e5e7eb);
  border-left: 4px solid var(--att-safe-color);
  transition: box-shadow 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.subject-card:hover {
  box-shadow: var(--att-shadow-hover);
  transform: translateY(-1px);
}

/* Status-based left border */
.subject-card[data-status="safe"]    { border-left-color: var(--att-safe-color); }
.subject-card[data-status="warning"] { border-left-color: var(--att-warning-color); }
.subject-card[data-status="danger"]  { border-left-color: var(--att-danger-color); }

/* Card top row: name + actions */
.subject-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.subject-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color, #111827);
  margin: 0;
  word-break: break-word;
  flex: 1;
}

.subject-card__actions {
  display: flex;
  gap: 0.2rem;
  flex-shrink: 0;
}

/* Stats row */
.subject-card__stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted, #6b7280);
  gap: 0.5rem;
  flex-wrap: wrap;
}

.subject-card__stats span {
  font-weight: 500;
}

/* Percentage display */
.subject-card__percentage {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
}

.subject-card[data-status="safe"]    .subject-card__percentage { color: var(--att-safe-color); }
.subject-card[data-status="warning"] .subject-card__percentage { color: var(--att-warning-color); }
.subject-card[data-status="danger"]  .subject-card__percentage { color: var(--att-danger-color); }

/* Progress bar */
.progress-bar {
  height: 8px;
  background: var(--att-track-bg);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.4s ease;
  background: var(--att-safe-color);
}

.subject-card[data-status="warning"] .progress-bar__fill { background: var(--att-warning-color); }
.subject-card[data-status="danger"]  .progress-bar__fill { background: var(--att-danger-color); }

/* Status badge */
.subject-card__badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.subject-card[data-status="safe"] .subject-card__badge {
  background: var(--att-safe-bg);
  color: var(--att-safe-color);
}

.subject-card[data-status="warning"] .subject-card__badge {
  background: var(--att-warning-bg);
  color: var(--att-warning-color);
}

.subject-card[data-status="danger"] .subject-card__badge {
  background: var(--att-danger-bg);
  color: var(--att-danger-color);
}

/* Recovery hint shown for warning/danger states */
.subject-card__hint {
  font-size: 0.78rem;
  color: var(--text-muted, #6b7280);
  margin: 0;
  font-style: italic;
  line-height: 1.4;
}

/* 
   EDIT MODAL
 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  backdrop-filter: blur(3px);
}

.modal-overlay[hidden] {
  display: none;
}

.modal-card {
  background: var(--card-bg, #ffffff);
  border-radius: 14px;
  padding: 2rem;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-color, #111827);
  margin: 0 0 0.25rem;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 0.5rem;
}

/* 
   FOOTER
 */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted, #9ca3af);
  border-top: 1px solid var(--border-color, #e5e7eb);
}

.footer-link {
  color: var(--primary-color, #3b82f6);
  text-decoration: none;
  font-weight: 500;
}

.footer-link:hover {
  text-decoration: underline;
}

/* 
   UTILITY — ANIMATION
 */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.subject-card {
  animation: slideIn 0.22s ease forwards;
}