/* ==========================================================================
   CURIOMAS RESEARCH & INNOVATION INSTITUTE (CRII)
   Reusable UI Components: Buttons, Cards, Modals, Forms, Badges, Toasts
   Light & Dark adaptive with Zero Unicode Emojis (SVG icons)
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.65rem 1.4rem;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 9999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}

.btn svg {
  width: 17px;
  height: 17px;
  stroke-width: 2;
  flex-shrink: 0;
}

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

.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: #1d4ed8;
  color: #ffffff;
  border-color: #1d4ed8;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

[data-theme="dark"] .btn-primary {
  background: #38bdf8;
  color: #030712;
  border-color: #38bdf8;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
  background: #7dd3fc;
  color: #030712;
  border-color: #7dd3fc;
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-primary);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

[data-theme="dark"] .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

.btn-glass {
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent-primary);
  border-color: rgba(37, 99, 235, 0.2);
}

.btn-glass:hover {
  background: rgba(37, 99, 235, 0.15);
  color: var(--accent-primary);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.84rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
}

/* Badges & Chips */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  letter-spacing: 0.02em;
}

.badge-blue {
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.badge-indigo {
  background: rgba(99, 102, 241, 0.1);
  color: #6366f1;
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

[data-theme="dark"] .badge-emerald {
  color: #34d399;
}

.badge-amber {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

[data-theme="dark"] .badge-amber {
  color: #fbbf24;
}

.tag-item {
  font-size: 0.76rem;
  padding: 0.2rem 0.55rem;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
}

[data-theme="dark"] .tag-item {
  background: rgba(255, 255, 255, 0.04);
}

/* Card Component */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.card-title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.card-title a:hover {
  color: var(--accent-primary);
}

.card-authors {
  font-size: 0.85rem;
  color: var(--accent-primary);
  margin-bottom: 0.85rem;
  font-weight: 500;
}

.card-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

/* Search Bar & Category Filters */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.search-input-group {
  position: relative;
  min-width: 300px;
  flex-grow: 1;
}

.search-icon-svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  width: 18px;
  height: 18px;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  color: var(--text-primary);
  font-size: 0.92rem;
  outline: none;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.category-pills {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.category-pill {
  padding: 0.45rem 1rem;
  font-size: 0.84rem;
  font-weight: 500;
  border-radius: 9999px;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.category-pill:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.category-pill.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
}

/* Forms & Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.35rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: all 0.2s ease;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

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

/* Modal Dialogs */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 1.5rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: translateY(15px) scale(0.98);
  transition: transform 0.25s ease;
  overflow: hidden;
}

.modal-overlay.active .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: color 0.2s, background-color 0.2s;
}

.modal-close:hover {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.05);
}

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--bg-primary);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 30000;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.85rem 1.25rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-lg);
  min-width: 270px;
  transform: translateX(120%);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: 0.88rem;
}

.toast.show {
  transform: translateX(0);
}

.toast-success {
  border-left: 4px solid var(--accent-emerald);
}

.toast-error {
  border-left: 4px solid var(--accent-crimson);
}

.toast-info {
  border-left: 4px solid var(--accent-primary);
}