/* ==========================================================================
   DevPilot-AI - Notes Page CSS
   ========================================================================== */

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .notes-grid {
    grid-template-columns: 1fr;
  }
}

.note-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-normal);
  position: relative;
}

.note-card:hover {
  transform: translateY(-3px);
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: var(--shadow-hover);
}

.note-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* Category Specific Badges */
.tag-dsa { background-color: #fee2e2; color: #dc2626; }
.tag-cpp { background-color: #e0f2fe; color: #0284c7; }
.tag-javascript { background-color: #fef3c7; color: #b45309; }
.tag-webdev { background-color: #e0e7ff; color: #4338ca; }
.tag-react { background-color: #cffafe; color: #0891b2; }
.tag-nodejs { background-color: #d1fae5; color: #059669; }
.tag-backend { background-color: #ccfbf1; color: #0d9488; }
.tag-sql { background-color: #ede9fe; color: #7c3aed; }
.tag-dbms { background-color: #ffedd5; color: #ea580c; }
.tag-postgresql { background-color: #e0f2fe; color: #0369a1; }
.tag-os { background-color: #f1f5f9; color: #475569; }
.tag-cn { background-color: #f3e8ff; color: #9333ea; }
.tag-oop { background-color: #fdf4ff; color: #c026d3; }
.tag-system-design { background-color: #fef3c7; color: #b45309; }
.tag-cs-fundamentals { background-color: #e2e8f0; color: #334155; }
.tag-aptitude { background-color: #ecfccb; color: #4d7c0f; }
.tag-english { background-color: #ffe4e6; color: #e11d48; }
.tag-aiml { background-color: #ede9fe; color: #6d28d9; }
.tag-python { background-color: #e0f2fe; color: #0284c7; }
.tag-git { background-color: #ffedd5; color: #c2410c; }
.tag-linux { background-color: #f4f4f5; color: #3f3f46; }
.tag-docker { background-color: #cffafe; color: #0e7490; }
.tag-cloud { background-color: #fef3c7; color: #d97706; }
.tag-interview-prep { background-color: #fef9c3; color: #a16207; }
.tag-resume { background-color: #dbeafe; color: #1d4ed8; }
.tag-projects { background-color: #d1fae5; color: #047857; }
.tag-concepts { background-color: #fef3c7; color: #d97706; }
.tag-general { background-color: #f1f5f9; color: #475569; }

/* Interview Important Badge */
.badge-interview {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background-color: #fef9c3;
  color: #854d0e;
  border: 1px solid #fde047;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
}

/* Category Filter Bar & Controls */
.category-filter-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.category-filter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.category-scroll-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 transparent;
  scroll-behavior: smooth;
}

.category-scroll-container::-webkit-scrollbar {
  height: 4px;
}

.category-scroll-container::-webkit-scrollbar-thumb {
  background-color: #cbd5e1;
  border-radius: 4px;
}

.filter-tab.interview-filter-btn {
  border-color: #fde047;
  background: #fefce8;
  color: #a16207;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.filter-tab.interview-filter-btn:hover {
  background: #fef08a;
  color: #854d0e;
}

.filter-tab.interview-filter-btn.active {
  background: #ca8a04;
  color: #ffffff;
  border-color: #a16207;
}

.category-select-dropdown {
  background: #ffffff;
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-on-surface);
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-select-dropdown:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2);
}

/* Note Metadata Line */
.note-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.375rem;
  font-size: 0.75rem;
  color: #64748b;
  margin-bottom: 0.5rem;
}

.difficulty-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.difficulty-easy { background-color: #ecfdf5; color: #059669; }
.difficulty-medium { background-color: #fffbeb; color: #d97706; }
.difficulty-hard { background-color: #fef2f2; color: #dc2626; }

/* Note Tags Pill List */
.note-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}

.note-tag-pill {
  font-size: 0.7rem;
  font-weight: 500;
  color: #4f46e5;
  background: #eef2ff;
  border: 1px solid #e0e7ff;
  border-radius: 9999px;
  padding: 0.15rem 0.55rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.note-tag-pill:hover {
  background: #4f46e5;
  color: #ffffff;
  border-color: #4f46e5;
}

/* Note Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-dropdown);
  border: 1px solid var(--color-outline-variant);
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal-card {
  transform: scale(1);
}

.modal-body {
  overflow-y: auto;
  max-height: calc(90vh - 130px);
}