/* ============================================================
   ENGELS811 SPOTIFY HQ – SHARED COMPONENTS
   ============================================================

   Extended Component Library:
   - Card Variants
   - Layout Systems
   - Forms & Inputs
   - Alerts & Messages
   - Dividers & Separators
   - Data Display
   - Responsive Utilities

   ============================================================ */

/* ============================================================
   CARD VARIANTS
   ============================================================ */

.spotify-hq-card--inset {
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.4),
              0 2px 8px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
}

.spotify-hq-card--elevated {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.5),
              0 0 24px rgba(232, 24, 24, 0.2);
  border: 1px solid var(--border-red-glow);
}

.spotify-hq-card--minimal {
  background: transparent;
  border: 1px solid var(--border-subtle);
  box-shadow: none;
}

.spotify-hq-card--success {
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.05);
}

.spotify-hq-card--warning {
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.05);
}

.spotify-hq-card--error {
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.05);
}

/* ============================================================
   CARD HEADER & STRUCTURE
   ============================================================ */

.spotify-hq-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.spotify-hq-card__header > div {
  display: grid;
  gap: var(--spacing-xs);
}

.spotify-hq-card__header h2 {
  margin: 0;
}

.spotify-hq-card__eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(232, 24, 24, 0.1);
  border: 1px solid rgba(232, 24, 24, 0.2);
  color: var(--engels-red);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  width: fit-content;
}

.spotify-hq-card__link {
  color: #c4d6ff;
  text-decoration: none;
  font-weight: 700;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.spotify-hq-card__link:hover {
  color: var(--engels-red-bright);
}

/* ============================================================
   FORM LAYOUT & STRUCTURE
   ============================================================ */

.spotify-hq-form {
  display: grid;
  gap: var(--spacing-lg);
}

.spotify-hq-form__section {
  display: grid;
  gap: var(--spacing-md);
}

.spotify-hq-form__section-title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.spotify-hq-form__group {
  display: grid;
  gap: var(--spacing-md);
}

.spotify-hq-form__group--2 {
  grid-template-columns: repeat(2, 1fr);
}

.spotify-hq-form__group--3 {
  grid-template-columns: repeat(3, 1fr);
}

.spotify-hq-form__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.spotify-hq-form__hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

.spotify-hq-form__divider {
  height: 1px;
  background: var(--border-subtle);
  border: none;
  margin: var(--spacing-lg) 0;
}

.spotify-hq-form__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
}

/* ============================================================
   RADIO & CHECKBOX GROUPS
   ============================================================ */

.spotify-hq-radio-group {
  display: grid;
  gap: var(--spacing-md);
}

.spotify-hq-radio-item,
.spotify-hq-checkbox-item {
  display: flex;
  align-items: flex-start;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.spotify-hq-radio-item:hover,
.spotify-hq-checkbox-item:hover {
  background: var(--glass-light);
  border-color: var(--border-red-glow);
}

.spotify-hq-radio-item input,
.spotify-hq-checkbox-item input {
  margin-top: 2px;
  margin-right: var(--spacing-md);
  cursor: pointer;
  accent-color: var(--engels-red);
  flex-shrink: 0;
}

.spotify-hq-radio-item input:checked,
.spotify-hq-checkbox-item input:checked {
  border-color: var(--engels-red);
}

.spotify-hq-radio-label,
.spotify-hq-checkbox-label {
  flex: 1;
}

.spotify-hq-radio-label strong,
.spotify-hq-checkbox-label strong {
  display: block;
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.spotify-hq-radio-label small,
.spotify-hq-checkbox-label small {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ============================================================
   RANGE INPUT (Slider)
   ============================================================ */

.spotify-hq-range-group {
  display: grid;
  gap: var(--spacing-md);
}

.spotify-hq-range-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.spotify-hq-range-input {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--border-subtle);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.spotify-hq-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--engels-red), var(--engels-red-bright));
  border: 2px solid var(--bg-card);
  cursor: pointer;
  box-shadow: var(--glow-red-md);
  transition: all var(--transition-fast);
}

.spotify-hq-range-input::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: var(--glow-red-lg);
}

.spotify-hq-range-input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--engels-red), var(--engels-red-bright));
  border: 2px solid var(--bg-card);
  cursor: pointer;
  box-shadow: var(--glow-red-md);
  transition: all var(--transition-fast);
}

.spotify-hq-range-input::-moz-range-thumb:hover {
  transform: scale(1.15);
  box-shadow: var(--glow-red-lg);
}

.spotify-hq-range-value {
  min-width: 50px;
  text-align: right;
  font-weight: 600;
  color: var(--engels-red-bright);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* ============================================================
   FILE INPUT
   ============================================================ */

.spotify-hq-file-input {
  position: relative;
}

.spotify-hq-file-input input[type="file"] {
  position: relative;
  display: block;
  width: 100%;
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 2px dashed var(--border-soft);
  background: var(--bg-input);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.spotify-hq-file-input input[type="file"]:hover {
  border-color: var(--border-red-glow);
  background: rgba(232, 24, 24, 0.05);
}

.spotify-hq-file-input input[type="file"]:focus {
  outline: none;
  border-color: var(--engels-red);
  box-shadow: var(--glow-red-md);
}

.spotify-hq-file-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--spacing-sm);
}

.spotify-hq-file-current {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid rgba(16, 185, 129, 0.2);
  background: rgba(16, 185, 129, 0.08);
  margin-top: var(--spacing-md);
}

.spotify-hq-file-current strong {
  display: block;
  color: var(--status-success);
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-xs);
}

.spotify-hq-file-current code {
  display: block;
  word-break: break-all;
  color: var(--text-secondary);
  font-size: var(--text-xs);
  margin-bottom: var(--spacing-sm);
}

/* ============================================================
   ALERTS & MESSAGES
   ============================================================ */

.spotify-hq-alert {
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: var(--glass-light);
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.spotify-hq-alert--success {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.2);
  color: #d1fae5;
}

.spotify-hq-alert--warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
  color: #fef3c7;
}

.spotify-hq-alert--error {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
  color: #fecdd3;
}

.spotify-hq-alert__icon {
  flex-shrink: 0;
  font-size: var(--text-xl);
}

.spotify-hq-alert__content {
  flex: 1;
  font-size: var(--text-sm);
  line-height: 1.6;
}

/* ============================================================
   DIVIDERS & SEPARATORS
   ============================================================ */

.spotify-hq-divider {
  height: 1px;
  background: var(--border-subtle);
  border: none;
  margin: var(--spacing-lg) 0;
}

.spotify-hq-divider--thick {
  height: 2px;
}

.spotify-hq-divider--spaced {
  margin: var(--spacing-2xl) 0;
}

/* ============================================================
   DATA DISPLAY – Fact Cards
   ============================================================ */

.spotify-hq-facts {
  display: grid;
  gap: var(--spacing-md);
}

.spotify-hq-fact {
  display: grid;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.025);
}

.spotify-hq-fact-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.spotify-hq-fact-value {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* ============================================================
   LAYOUT SYSTEMS
   ============================================================ */

.spotify-hq-page-layout {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.spotify-hq-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.spotify-hq-layout--3col {
  grid-template-columns: repeat(3, 1fr);
}

.spotify-hq-layout--main-sidebar {
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.8fr);
  align-items: start;
}

.spotify-hq-layout-main {
  display: grid;
  gap: var(--spacing-lg);
}

.spotify-hq-layout-sidebar {
  display: grid;
  gap: var(--spacing-lg);
}

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

@media (max-width: 1200px) {
  .spotify-hq-layout--3col {
    grid-template-columns: repeat(2, 1fr);
  }

  .spotify-hq-form__group--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .spotify-hq-layout,
  .spotify-hq-layout--3col,
  .spotify-hq-layout--main-sidebar {
    grid-template-columns: 1fr;
  }

  .spotify-hq-form__group--2,
  .spotify-hq-form__group--3 {
    grid-template-columns: 1fr;
  }

  .spotify-hq-form__actions {
    flex-direction: column;
  }

  .spotify-hq-form__actions .spotify-hq-btn {
    width: 100%;
  }

  .spotify-hq-card__header {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .spotify-hq-card {
    padding: var(--spacing-lg);
  }

  .spotify-hq-range-wrapper {
    flex-direction: column;
    align-items: flex-start;
  }

  .spotify-hq-range-value {
    align-self: flex-end;
    text-align: right;
  }

  .spotify-hq-alert {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .spotify-hq-radio-item,
  .spotify-hq-checkbox-item,
  .spotify-hq-range-input::-webkit-slider-thumb,
  .spotify-hq-range-input::-moz-range-thumb,
  .spotify-hq-file-input input[type="file"],
  .spotify-hq-btn {
    transition: none;
  }
}

@media (prefers-contrast: more) {
  .spotify-hq-card {
    border-width: 2px;
  }

  .spotify-hq-radio-item,
  .spotify-hq-checkbox-item {
    border-width: 2px;
  }

  .spotify-hq-btn {
    border-width: 2px;
  }

  .spotify-hq-badge {
    border-width: 2px;
  }
}

/* ============================================================
   END: spotify-hq-shared.css
   ============================================================ */