/* --- COURSES HUB PAGE --- */

.courses-page {
  min-height: 100vh;
  background: var(--bg-app);
  padding: 48px;
  overflow-y: auto;
}

/* Header */
.courses-header {
  max-width: 1000px;
  margin: 0 auto 48px;
}

.courses-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.courses-brand h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  color: var(--text-main);
}

.courses-subtitle {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  display: block;
  margin-top: 2px;
  letter-spacing: 0.5px;
}

.courses-desc {
  font-size: 14px;
  color: var(--text-dim);
  display: block;
  margin-top: 12px;
  line-height: 1.6;
  max-width: 600px;
}

/* Grid */
.courses-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* Course Card */
.course-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 210px;
}

.course-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent));
  opacity: 0;
  transition: opacity 0.25s;
}

.course-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.course-card:hover::before {
  opacity: 1;
}

/* Card Header */
.course-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
}

.course-card__icon {
  font-size: 32px;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.course-card__badge {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 12px;
  background: var(--accent-bg);
  color: var(--accent);
}

.course-card__actions {
  display: flex;
  gap: 4px;
}

.course-card__edit,
.course-card__delete {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  opacity: 0;
}

.course-card:hover .course-card__edit,
.course-card:hover .course-card__delete {
  opacity: 1;
}

.course-card__edit:hover {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.2);
}

.course-card__delete:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.2);
}

/* Card Content */
.course-card__title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 6px 0;
  color: var(--text-main);
}

.course-card__desc {
  font-size: 12px;
  color: var(--text-dim);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}

/* Card Footer */
.course-card__footer {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.course-card__ring {
  position: relative;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-card__ring-text {
  position: absolute;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.course-card__stats {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.course-card__status {
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Add Card */
.course-card--add {
  border-style: dashed;
  border-color: var(--border-highlight);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  min-height: 210px;
  transition: all 0.25s;
}

.course-card--add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(168, 85, 247, 0.05);
}

.course-card__add-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: all 0.25s;
}

.course-card--add:hover .course-card__add-icon {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(168, 85, 247, 0.1);
  transform: scale(1.05);
}

/* ===================== */
/* MODAL                 */
/* ===================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.2s ease;
}

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

.modal-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  width: 440px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Modal Actions */
.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.btn-secondary {
  background: var(--bg-active);
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font-ui);
  flex: 1;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-highlight);
}

.modal-actions .btn-primary {
  flex: 1;
  border-radius: 8px;
}

.svg-section {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.btn-toggle-svg {
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  transition: all 0.2s;
}

.btn-toggle-svg:hover {
  color: var(--text-main);
}

.btn-toggle-svg.active {
  color: var(--text-muted);
}

.modal-input--code {
  font-family: var(--font-mono);
  font-size: 11px;
  height: 80px;
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-dim);
  resize: vertical;
  line-height: 1.4;
}

.modal-card h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 6px 0;
  color: var(--text-main);
}

.modal-desc {
  font-size: 12px;
  color: var(--text-dim);
  margin: 0 0 24px 0;
}

.form-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  display: block;
  margin-top: 16px;
}

.form-label:first-of-type {
  margin-top: 0;
}

.modal-input {
  width: 100%;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-main);
  font-family: var(--font-ui);
  font-size: 13px;
  transition: all 0.2s;
}

.modal-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-bg);
}

.modal-input--small {
  width: 80px;
  text-align: center;
  font-size: 20px;
  padding: 8px;
}

/* Icon Picker */
.icon-picker-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 4px;
}

.icon-option {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 10px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s;
}

.icon-option:hover {
  border-color: var(--border-highlight);
  color: var(--text-main);
  background: var(--bg-active);
}

.icon-option.selected {
  border-color: var(--accent);
  background: var(--accent-bg);
  color: var(--accent);
}

/* Color Picker */
.color-picker-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.color-swatch {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s;
  position: relative;
}

.color-swatch:hover {
  transform: scale(1.1);
}

.color-swatch.selected {
  border-color: var(--text-main);
  box-shadow: 0 0 0 2px var(--bg-app);
}

.color-swatch.selected::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* ===================== */
/* ANIMATIONS            */
/* ===================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.course-card:nth-child(1) {
  animation: slideUp 0.35s ease 0s both;
}
.course-card:nth-child(2) {
  animation: slideUp 0.35s ease 0.05s both;
}
.course-card:nth-child(3) {
  animation: slideUp 0.35s ease 0.1s both;
}
.course-card:nth-child(4) {
  animation: slideUp 0.35s ease 0.15s both;
}
.course-card:nth-child(5) {
  animation: slideUp 0.35s ease 0.2s both;
}
.course-card:nth-child(6) {
  animation: slideUp 0.35s ease 0.25s both;
}
.course-card:nth-child(7) {
  animation: slideUp 0.35s ease 0.3s both;
}
.course-card:nth-child(8) {
  animation: slideUp 0.35s ease 0.35s both;
}

/* ===================== */
/* RESPONSIVE            */
/* ===================== */

@media (max-width: 768px) {
  .courses-page {
    padding: 24px 16px;
  }

  .courses-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .modal-card {
    padding: 24px;
  }
}