/**
 * Pitch4U Library – Frontend Styles
 * Dark theme with glassmorphism song cards
 * Colors: Cyan #01b5f2, Purple #ab15c7, Dark BG #010012
 */

/* ============================================
   CSS VARIABLES
   ============================================ */

.p4u-library {
    --p4u-primary: var(--global-palette1, #01b5f2);
    --p4u-secondary: var(--global-palette2, #ab15c7);
    --p4u-bg-dark: var(--global-palette3, #010012);
    --p4u-text-white: #ffffff;
    --p4u-text-muted: rgba(255, 255, 255, 0.65);
    --p4u-card-bg: rgba(255, 255, 255, 0.04);
    --p4u-card-hover: rgba(255, 255, 255, 0.07);
    --p4u-card-border: rgba(255, 255, 255, 0.1);
    --p4u-glow-purple: rgba(171, 21, 199, 0.3);
    --p4u-glow-cyan: rgba(1, 181, 242, 0.3);
    --p4u-input-bg: rgba(255, 255, 255, 0.06);
    --p4u-font: 'Wix Madefor Display', 'Poppins', sans-serif;
    --p4u-radius: 14px;
    --p4u-radius-sm: 8px;
    --p4u-radius-pill: 50px;
    --p4u-gap: 1.25rem;
    --p4u-max-width: 1290px;

    font-family: var(--p4u-font);
    color: var(--p4u-text-white);
    max-width: var(--p4u-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   SEARCH BAR
   ============================================ */

.p4u-search-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.p4u-search-field {
    position: relative;
    flex: 1;
    min-width: 180px;
}

.p4u-search-field input {
    width: 100%;
    box-sizing: border-box;
    padding: 14px 44px 14px 20px;
    background: var(--p4u-input-bg);
    border: 2px solid rgba(171, 21, 199, 0.3);
    border-radius: var(--p4u-radius-pill);
    color: var(--p4u-text-white);
    font-size: 14px;
    font-family: var(--p4u-font);
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.p4u-search-field input::placeholder {
    color: var(--p4u-text-muted);
}

.p4u-search-field input:focus {
    border-color: var(--p4u-primary);
    box-shadow: 0 0 20px var(--p4u-glow-cyan);
}

.p4u-search-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--p4u-secondary);
    pointer-events: none;
}

.p4u-btn-search {
    padding: 14px 32px;
    background: var(--p4u-secondary);
    color: var(--p4u-text-white);
    border: none;
    border-radius: var(--p4u-radius-pill);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    white-space: nowrap;
}

.p4u-btn-search:hover {
    background: var(--p4u-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px var(--p4u-glow-cyan);
}

/* ============================================
   FILTER BAR
   ============================================ */

.p4u-filter-bar {
    margin-bottom: 20px;
}

.p4u-filter-toggle {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--p4u-input-bg);
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius-pill);
    color: var(--p4u-text-white);
    font-size: 14px;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: border-color 0.2s;
    margin-bottom: 12px;
}

.p4u-filter-toggle:hover {
    border-color: var(--p4u-primary);
}

.p4u-filters {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    background: var(--p4u-card-bg);
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius);
    backdrop-filter: blur(10px);
}

.p4u-filter-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.p4u-filter-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--p4u-text-muted);
    min-width: 100px;
    padding-top: 6px;
    flex-shrink: 0;
}

.p4u-filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.p4u-filter-pill {
    padding: 6px 16px;
    background: transparent;
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius-pill);
    color: var(--p4u-text-muted);
    font-size: 13px;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.p4u-filter-pill:hover {
    border-color: var(--p4u-primary);
    color: var(--p4u-primary);
}

.p4u-filter-pill.active {
    background: var(--p4u-secondary);
    border-color: var(--p4u-secondary);
    color: var(--p4u-text-white);
    box-shadow: 0 2px 10px var(--p4u-glow-purple);
}

.p4u-filter-actions {
    padding-top: 4px;
}

.p4u-btn-clear {
    background: none;
    border: none;
    color: var(--p4u-primary);
    font-size: 13px;
    font-family: var(--p4u-font);
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
    padding: 0;
}

.p4u-btn-clear:hover {
    color: var(--p4u-text-white);
}

/* ============================================
   ACTIVE FILTERS
   ============================================ */

.p4u-active-filters {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.p4u-active-label {
    font-size: 12px;
    color: var(--p4u-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.p4u-active-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.p4u-active-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(171, 21, 199, 0.2);
    border: 1px solid rgba(171, 21, 199, 0.4);
    border-radius: var(--p4u-radius-pill);
    color: var(--p4u-text-white);
    font-size: 12px;
}

.p4u-active-tag-remove {
    background: none;
    border: none;
    color: var(--p4u-text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 0;
    line-height: 1;
}

.p4u-active-tag-remove:hover {
    color: var(--p4u-text-white);
}

/* ============================================
   BREADCRUMB
   ============================================ */

.p4u-breadcrumb {
    font-size: 13px;
    color: var(--p4u-text-muted);
    margin-bottom: 8px;
}

.p4u-breadcrumb a {
    color: var(--p4u-text-muted);
    text-decoration: none;
}

.p4u-breadcrumb a:hover {
    color: var(--p4u-primary);
}

/* ============================================
   RESULTS HEADER
   ============================================ */

.p4u-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.p4u-results-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--p4u-text-white);
    margin: 0;
}

.p4u-results-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.p4u-results-meta span {
    font-size: 13px;
    color: var(--p4u-text-muted);
}

.p4u-sort-select {
    background: var(--p4u-input-bg);
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius-sm);
    color: var(--p4u-text-white);
    padding: 6px 12px;
    font-size: 13px;
    font-family: var(--p4u-font);
    cursor: pointer;
}

.p4u-sort-select option {
    background: #1a1a2e;
    color: #fff;
}

/* ============================================
   SONG TABLE (List View)
   ============================================ */

.p4u-song-table-wrapper {
    margin-bottom: 32px;
    overflow-x: auto;
}

.p4u-song-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--p4u-radius);
    overflow: hidden;
}

.p4u-song-table thead th {
    padding: 14px 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--p4u-primary);
    text-align: left;
    background: rgba(1, 181, 242, 0.06);
    border-bottom: 1px solid var(--p4u-card-border);
    white-space: nowrap;
}

.p4u-th-icon { width: 60px; }
.p4u-th-title { min-width: 200px; }
.p4u-th-artist { min-width: 150px; }
.p4u-th-key { width: 80px; }
.p4u-th-preview { width: 80px; text-align: center; }
.p4u-th-action { width: 200px; text-align: right; }

.p4u-song-row {
    transition: background 0.2s;
}

.p4u-song-row:hover {
    background: var(--p4u-card-hover);
}

.p4u-song-row td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    vertical-align: middle;
    font-size: 14px;
}

.p4u-song-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.p4u-song-icon-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--p4u-secondary), var(--p4u-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.p4u-song-title-cell {
    font-weight: 600;
    color: var(--p4u-text-white);
}

.p4u-song-artist-cell {
    color: var(--p4u-text-muted);
}

.p4u-song-key-cell {
    font-weight: 600;
    color: var(--p4u-text-white);
}

/* YouTube Preview Button */
.p4u-yt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: #ff0000;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.p4u-yt-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 12px rgba(255, 0, 0, 0.4);
}

.p4u-yt-btn svg {
    width: 16px;
    height: 16px;
    fill: #fff;
}

/* Stream/Sing Button */
.p4u-btn-sing {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--p4u-secondary), var(--p4u-primary));
    color: var(--p4u-text-white);
    border: none;
    border-radius: var(--p4u-radius-pill);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    white-space: nowrap;
    text-decoration: none;
}

.p4u-btn-sing:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--p4u-glow-purple);
    color: var(--p4u-text-white);
    text-decoration: none;
}

.p4u-btn-sing svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   SONG CARDS (Glassmorphism Detail View)
   ============================================ */

.p4u-song-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.p4u-song-card {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 20px;
    align-items: center;
    padding: 24px 28px;
    background: linear-gradient(135deg, rgba(171, 21, 199, 0.08), rgba(1, 181, 242, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--p4u-radius);
    backdrop-filter: blur(12px);
    transition: border-color 0.3s, box-shadow 0.3s;
    overflow: hidden;
}

.p4u-song-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent,
        var(--p4u-secondary),
        var(--p4u-primary),
        transparent
    );
    opacity: 0;
    transition: opacity 0.3s;
}

.p4u-song-card:hover {
    border-color: rgba(171, 21, 199, 0.25);
    box-shadow: 0 4px 30px rgba(171, 21, 199, 0.1);
}

.p4u-song-card:hover::before {
    opacity: 1;
}

/* Card: Cover */
.p4u-card-cover {
    width: 70px;
    height: 70px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.p4u-card-cover-placeholder {
    width: 70px;
    height: 70px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--p4u-secondary), var(--p4u-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

/* Card: Info */
.p4u-card-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.p4u-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--p4u-text-white);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.p4u-card-artist {
    font-size: 0.95rem;
    color: var(--p4u-text-muted);
    margin: 0;
}

.p4u-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 2px;
}

.p4u-card-tag {
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--p4u-radius-pill);
    font-size: 12px;
    color: var(--p4u-text-muted);
    white-space: nowrap;
}

.p4u-card-voice-text {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 2px;
}

/* Card: Keys */
.p4u-card-keys {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}

.p4u-key-pill {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius-sm);
    color: var(--p4u-text-muted);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.p4u-key-pill:hover {
    border-color: var(--p4u-primary);
    color: var(--p4u-primary);
}

.p4u-key-pill.active {
    background: var(--p4u-secondary);
    border-color: var(--p4u-secondary);
    color: var(--p4u-text-white);
    box-shadow: 0 2px 8px var(--p4u-glow-purple);
}

/* Card: Right Side (What's it for? + CTA) */
.p4u-card-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.p4u-card-usecases {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.p4u-card-usecases-label {
    font-size: 12px;
    color: var(--p4u-text-muted);
    margin-bottom: 2px;
}

.p4u-card-usecase-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--p4u-radius-pill);
    font-size: 12px;
    color: var(--p4u-text-muted);
    white-space: nowrap;
}

.p4u-card-usecase-tag .p4u-uc-icon {
    font-size: 14px;
}

/* Sing Now CTA (Glassmorphism Glow) */
.p4u-btn-sing-card {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: linear-gradient(135deg, rgba(171, 21, 199, 0.15), rgba(1, 181, 242, 0.1));
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--p4u-secondary), var(--p4u-primary)) 1;
    border-radius: var(--p4u-radius-pill);
    color: var(--p4u-text-white);
    font-size: 16px;
    font-weight: 700;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;

    /* Fix for border-radius + border-image conflict */
    border: 2px solid transparent;
    background-clip: padding-box;
    /* Glow outline via box-shadow */
    box-shadow:
        inset 0 0 0 2px rgba(171, 21, 199, 0.4),
        0 0 20px rgba(171, 21, 199, 0.15),
        0 0 40px rgba(1, 181, 242, 0.08);
}

.p4u-btn-sing-card:hover {
    background: linear-gradient(135deg, rgba(171, 21, 199, 0.3), rgba(1, 181, 242, 0.2));
    box-shadow:
        inset 0 0 0 2px rgba(1, 181, 242, 0.5),
        0 0 30px rgba(171, 21, 199, 0.3),
        0 0 60px rgba(1, 181, 242, 0.15);
    transform: translateY(-2px);
    color: var(--p4u-text-white);
    text-decoration: none;
}

.p4u-btn-sing-card .p4u-headphones {
    font-size: 20px;
}

.p4u-btn-sing-card .p4u-arrow {
    font-size: 18px;
    transition: transform 0.2s;
}

.p4u-btn-sing-card:hover .p4u-arrow {
    transform: translateX(4px);
}

/* ============================================
   LOADING & EMPTY STATE
   ============================================ */

.p4u-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 60px 20px;
    color: var(--p4u-text-muted);
    font-size: 14px;
}

.p4u-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--p4u-primary);
    border-radius: 50%;
    animation: p4u-spin 0.8s linear infinite;
}

@keyframes p4u-spin {
    to { transform: rotate(360deg); }
}

.p4u-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 60px 20px;
    color: var(--p4u-text-muted);
    text-align: center;
}

.p4u-empty svg {
    opacity: 0.4;
}

.p4u-empty p {
    font-size: 15px;
    margin: 0;
}

/* ============================================
   PAGINATION
   ============================================ */

.p4u-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 32px 0;
    flex-wrap: wrap;
}

.p4u-page-btn {
    min-width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    background: var(--p4u-card-bg);
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius-sm);
    color: var(--p4u-text-muted);
    font-size: 14px;
    font-family: var(--p4u-font);
    cursor: pointer;
    transition: all 0.2s;
}

.p4u-page-btn:hover {
    border-color: var(--p4u-primary);
    color: var(--p4u-primary);
}

.p4u-page-btn.active {
    background: var(--p4u-secondary);
    border-color: var(--p4u-secondary);
    color: var(--p4u-text-white);
}

.p4u-page-btn:disabled {
    opacity: 0.3;
    cursor: default;
}

.p4u-page-btn:disabled:hover {
    border-color: var(--p4u-card-border);
    color: var(--p4u-text-muted);
}

/* ============================================
   VIEW TOGGLE (Table vs Cards)
   ============================================ */

.p4u-view-toggle {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.p4u-view-btn {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--p4u-input-bg);
    border: 1px solid var(--p4u-card-border);
    border-radius: var(--p4u-radius-sm);
    color: var(--p4u-text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.p4u-view-btn:hover,
.p4u-view-btn.active {
    border-color: var(--p4u-primary);
    color: var(--p4u-primary);
}

/* ============================================
   USE CASE ICONS (emoji mapping)
   ============================================ */

/* Handled via JS data attributes */

/* ============================================
   RESPONSIVE — MOBILE
   ============================================ */

@media (max-width: 768px) {
    .p4u-search-bar {
        flex-direction: column;
    }

    .p4u-search-field {
        min-width: 100%;
    }

    .p4u-btn-search {
        width: 100%;
    }

    .p4u-filter-toggle {
        display: flex;
    }

    .p4u-filters {
        display: none;
    }

    .p4u-filters.open {
        display: flex;
    }

    .p4u-filter-group {
        flex-direction: column;
        gap: 8px;
    }

    .p4u-filter-label {
        min-width: auto;
    }

    /* Hide table on mobile, show cards */
    .p4u-song-table-wrapper {
        display: none;
    }

    .p4u-song-cards {
        display: flex !important;
    }

    .p4u-song-card {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 18px;
    }

    .p4u-card-right {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .p4u-btn-sing-card {
        width: 100%;
        justify-content: center;
    }

    .p4u-results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .p4u-card-keys {
        justify-content: flex-start;
    }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
    .p4u-song-card {
        grid-template-columns: auto 1fr;
        gap: 16px;
    }

    .p4u-card-right {
        grid-column: 1 / -1;
        justify-content: space-between;
    }
}

/* Desktop: show both table and cards based on view mode */
@media (min-width: 769px) {
    /* Default: show table, hide cards */
    .p4u-song-cards {
        display: none;
    }

    .p4u-library.view-cards .p4u-song-table-wrapper {
        display: none;
    }

    .p4u-library.view-cards .p4u-song-cards {
        display: flex;
    }
}

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

@keyframes p4u-fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.p4u-song-row,
.p4u-song-card {
    animation: p4u-fadeIn 0.3s ease forwards;
}

.p4u-song-row:nth-child(1),
.p4u-song-card:nth-child(1) { animation-delay: 0s; }
.p4u-song-row:nth-child(2),
.p4u-song-card:nth-child(2) { animation-delay: 0.05s; }
.p4u-song-row:nth-child(3),
.p4u-song-card:nth-child(3) { animation-delay: 0.1s; }
.p4u-song-row:nth-child(4),
.p4u-song-card:nth-child(4) { animation-delay: 0.15s; }
.p4u-song-row:nth-child(5),
.p4u-song-card:nth-child(5) { animation-delay: 0.2s; }
.p4u-song-row:nth-child(6),
.p4u-song-card:nth-child(6) { animation-delay: 0.25s; }