/* ==========================================================================
   Utility Seva - Tool Cards Grid & Modal Stylesheet
   Five-column responsive grid and interactive card components
   ========================================================================== */

/* --- Tools Grid Layout --- */
.tools-grid-section {
  padding-bottom: 3.5rem;
}

.tools-grid {
  display: grid;
  gap: 1.25rem;
  /* Mobile: 1 column */
  grid-template-columns: 1fr;
  width: 100%;
}

/* Tablet Portrait / Small Tablet (480px - 719px): 2 columns */
@media (min-width: 480px) {
  .tools-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Tablet Landscape (720px - 959px): 3 columns */
@media (min-width: 720px) {
  .tools-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Medium Desktop / Laptop (960px - 1199px): 4 columns */
@media (min-width: 960px) {
  .tools-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* Large Desktop (>= 1200px): EXACTLY 5 COLUMNS */
@media (min-width: 1200px) {
  .tools-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* --- Tool Card Component --- */
.tool-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.22s ease,
              border-color 0.22s ease,
              background-color var(--transition-normal);
  cursor: pointer;
  position: relative;
  text-align: left;
  outline: none;
  height: 100%;
  box-shadow: var(--shadow-card);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--brand-500);
  background-color: var(--bg-card-hover);
}

.tool-card:focus-visible {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--brand-glow), var(--shadow-card-hover);
  transform: translateY(-3px);
}

/* Card Header (Icon + Coming Soon Badge) */
.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  gap: 0.5rem;
}

/* Tool Icon Box */
.tool-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.tool-card:hover .tool-icon-box {
  transform: scale(1.08);
}

.tool-icon-box svg {
  width: 22px;
  height: 22px;
}

/* Individual Icon Accent Themes */
.icon-theme-blue {
  background-color: rgba(37, 99, 235, 0.12);
  color: #2563eb;
}
.icon-theme-emerald {
  background-color: rgba(5, 150, 105, 0.12);
  color: #059669;
}
.icon-theme-amber {
  background-color: rgba(217, 119, 6, 0.12);
  color: #d97706;
}
.icon-theme-purple {
  background-color: rgba(124, 58, 237, 0.12);
  color: #7c3aed;
}
.icon-theme-rose {
  background-color: rgba(225, 29, 72, 0.12);
  color: #e11d48;
}
.icon-theme-cyan {
  background-color: rgba(8, 145, 178, 0.12);
  color: #0891b2;
}
.icon-theme-indigo {
  background-color: rgba(79, 70, 229, 0.12);
  color: #4f46e5;
}
.icon-theme-teal {
  background-color: rgba(13, 148, 136, 0.12);
  color: #0d9488;
}
.icon-theme-orange {
  background-color: rgba(234, 88, 12, 0.12);
  color: #ea580c;
}
.icon-theme-sky {
  background-color: rgba(2, 132, 199, 0.12);
  color: #0284c7;
}

/* Dark mode adjustments for icon themes */
html[data-theme="dark"] .icon-theme-blue,
html.dark .icon-theme-blue { color: #60a5fa; background-color: rgba(96, 165, 250, 0.16); }
html[data-theme="dark"] .icon-theme-emerald,
html.dark .icon-theme-emerald { color: #34d399; background-color: rgba(52, 211, 153, 0.16); }
html[data-theme="dark"] .icon-theme-amber,
html.dark .icon-theme-amber { color: #fbbf24; background-color: rgba(251, 191, 36, 0.16); }
html[data-theme="dark"] .icon-theme-purple,
html.dark .icon-theme-purple { color: #a78bfa; background-color: rgba(167, 139, 250, 0.16); }
html[data-theme="dark"] .icon-theme-rose,
html.dark .icon-theme-rose { color: #fb7185; background-color: rgba(251, 113, 133, 0.16); }
html[data-theme="dark"] .icon-theme-cyan,
html.dark .icon-theme-cyan { color: #22d3ee; background-color: rgba(34, 211, 238, 0.16); }
html[data-theme="dark"] .icon-theme-indigo,
html.dark .icon-theme-indigo { color: #818cf8; background-color: rgba(129, 140, 248, 0.16); }
html[data-theme="dark"] .icon-theme-teal,
html.dark .icon-theme-teal { color: #2dd4bf; background-color: rgba(45, 212, 191, 0.16); }
html[data-theme="dark"] .icon-theme-orange,
html.dark .icon-theme-orange { color: #fb923c; background-color: rgba(251, 146, 60, 0.16); }
html[data-theme="dark"] .icon-theme-sky,
html.dark .icon-theme-sky { color: #38bdf8; background-color: rgba(56, 189, 248, 0.16); }

/* Discreet Coming Soon Badge */
.tool-badge-coming {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-full);
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  white-space: nowrap;
}

/* Available Badge for functional tools */
.tool-badge-available {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-full);
  background-color: rgba(5, 150, 105, 0.1);
  color: #059669;
  border: 1px solid rgba(5, 150, 105, 0.3);
  white-space: nowrap;
}

html[data-theme="dark"] .tool-badge-available,
html.dark .tool-badge-available {
  background-color: rgba(52, 211, 153, 0.16);
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.35);
}

/* Category Label */
.tool-category-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
  display: block;
}

.tool-category-label.category-image { color: var(--cat-image); }
.tool-category-label.category-pdf { color: var(--cat-pdf); }
.tool-category-label.category-student { color: var(--cat-student); }
.tool-category-label.category-calculator { color: var(--cat-calc); }

/* Tool Title */
.tool-title {
  font-size: 1.025rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 0.45rem;
  transition: color var(--transition-fast);
}

.tool-card:hover .tool-title {
  color: var(--brand-500);
}

/* Tool Description */
.tool-description {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: auto;
}

/* --- Empty Search State --- */
.tools-empty-state {
  display: none;
  text-align: center;
  padding: 4rem 1.5rem;
  max-width: 520px;
  margin: 0 auto;
}

.tools-empty-state.visible {
  display: block;
}

.empty-icon-wrap {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-alt);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.empty-icon-wrap svg {
  width: 32px;
  height: 32px;
}

.empty-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.empty-text {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.empty-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  background-color: var(--brand-600);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.empty-action-btn:hover {
  background-color: var(--brand-700);
}

.empty-action-btn:active {
  transform: scale(0.97);
}

/* ==========================================================================
   Tool Modal Component (UI Only Phase)
   ========================================================================== */
.tool-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 999;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.tool-modal-backdrop.active {
  display: flex;
  opacity: 1;
}

.tool-modal-dialog {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  max-width: 540px;
  width: 100%;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
  overflow: hidden;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.tool-modal-backdrop.active .tool-modal-dialog {
  transform: scale(1);
}

.tool-modal-header {
  padding: 1.5rem 1.5rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.tool-modal-title-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.modal-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.modal-icon-box svg {
  width: 26px;
  height: 26px;
}

.modal-category-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: inline-block;
  margin-bottom: 0.2rem;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
}

.modal-close-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-alt);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

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

.modal-close-btn svg {
  width: 18px;
  height: 18px;
}

.tool-modal-body {
  padding: 1.5rem;
}

.modal-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* Coming Soon Banner inside Modal */
.modal-coming-soon-banner {
  background-color: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.banner-icon {
  color: var(--badge-text);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.banner-icon svg {
  width: 22px;
  height: 22px;
}

.banner-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--badge-text);
  margin-bottom: 0.25rem;
}

.banner-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.tool-modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-surface-alt);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.modal-action-close {
  padding: 0.6rem 1.35rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

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