/**
 * StarryStories Web App - Components
 * Buttons, cards, modals, and reusable UI elements
 */

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-m) var(--spacing-l);
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-m);
    cursor: pointer;
    transition: all var(--transition-normal);
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0) scale(0.98);
}

/* Secondary Button */
.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--divider);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-surface-alt);
    border-color: var(--accent-primary);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* Icon Button */
.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
    font-size: 20px;
}

/* Large Button */
.btn-lg {
    padding: var(--spacing-l) var(--spacing-xl);
    font-size: var(--font-size-subheading);
    border-radius: var(--radius-l);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-m);
    padding: var(--spacing-m);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: rgba(91, 124, 250, 0.3);
    box-shadow: var(--shadow-md);
}

/* Story Card */
.story-card {
    display: flex;
    gap: var(--spacing-m);
    padding: var(--spacing-m);
    cursor: pointer;
}

.story-card-image {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-s);
    object-fit: cover;
    background: var(--bg-surface-alt);
    flex-shrink: 0;
}

.story-card-content {
    flex: 1;
    min-width: 0;
}

.story-card-title {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.story-card-summary {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Category Card */
.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-s);
    padding: var(--spacing-l);
    text-align: center;
    cursor: pointer;
    min-height: 120px;
}

.category-card-emoji {
    font-size: 36px;
    line-height: 1;
}

.category-card-label {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

/* Language Card */
.language-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-m);
    padding: var(--spacing-m) var(--spacing-l);
    cursor: pointer;
}

.language-card-native {
    font-size: var(--font-size-subheading);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.language-card-english {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
}

.language-card.selected {
    border-color: var(--accent-primary);
    background: rgba(91, 124, 250, 0.1);
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(14, 15, 19, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--divider);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-m);
    z-index: var(--z-sticky);
}

.nav-back {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-small);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.nav-back:hover {
    color: var(--text-primary);
}

.nav-title {
    flex: 1;
    text-align: center;
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   AUDIO PLAYER
   ============================================ */

.player-container {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    z-index: var(--z-modal);
}

.player-artwork {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.player-artwork img {
    max-width: 300px;
    max-height: 300px;
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.player-controls {
    padding: var(--spacing-xl);
    background: var(--bg-surface);
    border-top-left-radius: var(--radius-xl);
    border-top-right-radius: var(--radius-xl);
}

.player-title {
    font-size: var(--font-size-heading);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    margin-bottom: var(--spacing-l);
}

.player-progress {
    width: 100%;
    height: 4px;
    background: var(--divider);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-m);
    overflow: hidden;
    cursor: pointer;
}

.player-progress-fill {
    height: 100%;
    background: var(--accent-primary);
    border-radius: var(--radius-full);
    width: 0%;
}

.player-time {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-caption);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-l);
}

.player-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-l);
}

.player-btn-play {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.player-btn-play:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

/* ============================================
   LOADING STATES
   ============================================ */

.skeleton {
    background: var(--bg-surface-alt);
    border-radius: var(--radius-s);
}

.skeleton-text {
    height: 16px;
    margin-bottom: var(--spacing-xs);
}

.skeleton-text:last-child {
    width: 60%;
}

.skeleton-image {
    width: 80px;
    height: 80px;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid {
    display: grid;
    gap: var(--spacing-m);
}

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

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

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   SECTION TITLES
   ============================================ */

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-s);
    margin-bottom: var(--spacing-l);
}

.section-title-icon {
    font-size: 24px;
}

.section-title-text {
    font-size: var(--font-size-subheading);
    font-weight: var(--font-weight-semibold);
}