/* ═══════════════════════════════════════════════
   Save-to-Lists — Styles
   Button + Popup + Animations
   @since 1.7.0
   ═══════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────── */
:root {
    --bpco-sl-accent: #2563eb;
    --bpco-sl-accent-hover: #1d4ed8;
    --bpco-sl-saved: #f59e0b;
    --bpco-sl-bg: #ffffff;
    --bpco-sl-bg-hover: #f8fafc;
    --bpco-sl-border: #e2e8f0;
    --bpco-sl-text: #1e293b;
    --bpco-sl-text-secondary: #64748b;
    --bpco-sl-overlay-bg: rgba(0, 0, 0, 0.45);
    --bpco-sl-radius: 16px;
    --bpco-sl-radius-sm: 10px;
    --bpco-sl-shadow: 0 10px 40px rgba(0, 0, 0, 0.15),
                      0 2px 10px rgba(0, 0, 0, 0.08);
    --bpco-sl-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Save Button ───────────────────────────── */
.bpco-save-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    color: var(--bpco-sl-text-secondary);
    transition: all var(--bpco-sl-transition);
    position: relative;
    line-height: 1;
    -webkit-tap-highlight-color: transparent;
}

.bpco-save-btn:hover {
    color: var(--bpco-sl-text);
    background: var(--bpco-sl-bg-hover);
    transform: scale(1.1);
}

.bpco-save-btn:active {
    transform: scale(0.95);
}

.bpco-save-btn .bpco-save-icon {
    width: 22px;
    height: 22px;
    transition: all var(--bpco-sl-transition);
}

/* Icon visibility states */
.bpco-save-btn .bpco-save-icon--filled {
    display: none;
}

.bpco-save-btn .bpco-save-icon--outline {
    display: block;
}

.bpco-save-btn--saved .bpco-save-icon--filled {
    display: block;
    color: var(--bpco-sl-saved);
}

.bpco-save-btn--saved .bpco-save-icon--outline {
    display: none;
}

/* Save animation (pop) */
.bpco-save-btn--saving .bpco-save-icon--filled {
    display: block;
    animation: bpcoSavePop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes bpcoSavePop {
    0%   { transform: scale(0.5); opacity: 0.5; }
    60%  { transform: scale(1.25); }
    100% { transform: scale(1); opacity: 1; }
}

/* Busy state */
.bpco-save-btn--busy {
    pointer-events: none;
    opacity: 0.6;
}

/* Text label */
.bpco-save-text {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
}

.bpco-save-btn--saved .bpco-save-text {
    color: var(--bpco-sl-saved);
}

/* ── Overlay ───────────────────────────────── */
.bpco-sl-overlay {
    position: fixed;
    inset: 0;
    z-index: 999999;
    background: var(--bpco-sl-overlay-bg);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--bpco-sl-transition);
}

.bpco-sl-overlay--visible {
    opacity: 1;
}

/* ── Popup (shared) ────────────────────────── */
.bpco-sl-popup {
    background: var(--bpco-sl-bg);
    border-radius: var(--bpco-sl-radius) var(--bpco-sl-radius) 0 0;
    width: 100%;
    max-width: 420px;
    max-height: 70vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--bpco-sl-shadow);
    transform: translateY(100%);
    transition: transform var(--bpco-sl-transition);
    overflow: hidden;
}

.bpco-sl-overlay--visible .bpco-sl-popup {
    transform: translateY(0);
}

/* Drag handle (mobile feel) */
.bpco-sl-drag-handle {
    display: flex;
    justify-content: center;
    padding: 10px 0 4px;
    cursor: grab;
}

.bpco-sl-drag-handle span {
    display: block;
    width: 36px;
    height: 4px;
    background: var(--bpco-sl-border);
    border-radius: 2px;
}

/* Header */
.bpco-sl-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 16px 12px;
    border-bottom: 1px solid var(--bpco-sl-border);
}

.bpco-sl-heading {
    font-size: 18px;
    font-weight: 600;
    color: var(--bpco-sl-text);
    margin: 0;
    line-height: 1.3;
}

.bpco-sl-close,
.bpco-sl-new-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    color: var(--bpco-sl-text-secondary);
    transition: all var(--bpco-sl-transition);
    line-height: 0;
}

.bpco-sl-close svg,
.bpco-sl-new-close svg {
    width: 20px;
    height: 20px;
}

.bpco-sl-close:hover,
.bpco-sl-new-close:hover {
    background: var(--bpco-sl-bg-hover);
    color: var(--bpco-sl-text);
}

/* ── Lists Container ───────────────────────── */
.bpco-sl-lists {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
    -webkit-overflow-scrolling: touch;
}

/* Loading spinner */
.bpco-sl-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.bpco-sl-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--bpco-sl-border);
    border-top-color: var(--bpco-sl-accent);
    border-radius: 50%;
    animation: bpcoSlSpin 0.7s linear infinite;
}

@keyframes bpcoSlSpin {
    to { transform: rotate(360deg); }
}

/* Individual list row */
.bpco-sl-list-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    cursor: pointer;
    transition: background var(--bpco-sl-transition);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.bpco-sl-list-row:hover {
    background: var(--bpco-sl-bg-hover);
}

.bpco-sl-list-row--busy {
    opacity: 0.6;
    pointer-events: none;
}

/* Checkbox */
.bpco-sl-checkbox {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    border: 2px solid var(--bpco-sl-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--bpco-sl-transition);
    background: transparent;
}

.bpco-sl-checkbox svg {
    width: 14px;
    height: 14px;
    stroke: #fff;
    stroke-width: 3;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--bpco-sl-transition);
}

.bpco-sl-list-row--checked .bpco-sl-checkbox {
    background: var(--bpco-sl-accent);
    border-color: var(--bpco-sl-accent);
}

.bpco-sl-list-row--checked .bpco-sl-checkbox svg {
    opacity: 1;
    transform: scale(1);
}

/* List info */
.bpco-sl-list-info {
    flex: 1;
    min-width: 0;
}

.bpco-sl-list-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--bpco-sl-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bpco-sl-list-meta {
    font-size: 12px;
    color: var(--bpco-sl-text-secondary);
    margin-top: 1px;
}

/* Visibility badge */
.bpco-sl-vis-badge {
    font-size: 11px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 20px;
    background: var(--bpco-sl-bg-hover);
    color: var(--bpco-sl-text-secondary);
    white-space: nowrap;
    text-transform: capitalize;
}

/* ── Footer (+ New List button) ────────────── */
.bpco-sl-footer {
    border-top: 1px solid var(--bpco-sl-border);
    padding: 8px 16px;
}

.bpco-sl-new-list-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--bpco-sl-accent);
    font-size: 15px;
    font-weight: 500;
    transition: color var(--bpco-sl-transition);
}

.bpco-sl-new-list-btn svg {
    width: 20px;
    height: 20px;
}

.bpco-sl-new-list-btn:hover {
    color: var(--bpco-sl-accent-hover);
}

/* ── New List Form ─────────────────────────── */
.bpco-sl-new-form {
    padding: 16px;
    flex: 1;
}

.bpco-sl-field {
    margin-bottom: 16px;
}

.bpco-sl-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--bpco-sl-text-secondary);
    margin-bottom: 6px;
}

.bpco-sl-input {
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    border: 1.5px solid var(--bpco-sl-border);
    border-radius: var(--bpco-sl-radius-sm);
    background: var(--bpco-sl-bg);
    color: var(--bpco-sl-text);
    outline: none;
    transition: border-color var(--bpco-sl-transition);
    box-sizing: border-box;
}

.bpco-sl-input:focus {
    border-color: var(--bpco-sl-accent);
}

.bpco-sl-input::placeholder {
    color: var(--bpco-sl-text-secondary);
    opacity: 0.6;
}

/* Select dropdown */
.bpco-sl-select-wrap {
    position: relative;
}

.bpco-sl-select {
    width: 100%;
    padding: 10px 38px 10px 14px;
    font-size: 15px;
    border: 1.5px solid var(--bpco-sl-border);
    border-radius: var(--bpco-sl-radius-sm);
    background: var(--bpco-sl-bg);
    color: var(--bpco-sl-text);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: border-color var(--bpco-sl-transition);
}

.bpco-sl-select:focus {
    border-color: var(--bpco-sl-accent);
}

.bpco-sl-select-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--bpco-sl-text-secondary);
    pointer-events: none;
}

.bpco-sl-vis-desc {
    font-size: 12px;
    color: var(--bpco-sl-text-secondary);
    margin-top: 6px;
}

/* ── Action Buttons ────────────────────────── */
.bpco-sl-new-actions {
    display: flex;
    gap: 10px;
    padding: 12px 16px 16px;
    border-top: 1px solid var(--bpco-sl-border);
    justify-content: flex-end;
}

.bpco-sl-btn {
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--bpco-sl-radius-sm);
    cursor: pointer;
    transition: all var(--bpco-sl-transition);
    border: none;
    line-height: 1.2;
}

.bpco-sl-btn--primary {
    background: var(--bpco-sl-accent);
    color: #fff;
}

.bpco-sl-btn--primary:hover {
    background: var(--bpco-sl-accent-hover);
}

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

.bpco-sl-btn--secondary {
    background: transparent;
    color: var(--bpco-sl-text-secondary);
    border: 1.5px solid var(--bpco-sl-border);
}

.bpco-sl-btn--secondary:hover {
    background: var(--bpco-sl-bg-hover);
    color: var(--bpco-sl-text);
}

/* ── Toast Notification ────────────────────── */
.bpco-sl-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bpco-sl-text);
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 9999999;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.bpco-sl-toast--visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ── Desktop: Centered Modal ───────────────── */
@media (min-width: 768px) {
    .bpco-sl-overlay {
        align-items: center;
    }

    .bpco-sl-popup {
        border-radius: var(--bpco-sl-radius);
        max-height: 60vh;
        transform: translateY(20px);
        opacity: 0;
    }

    .bpco-sl-overlay--visible .bpco-sl-popup {
        transform: translateY(0);
        opacity: 1;
    }

    .bpco-sl-drag-handle {
        display: none;
    }

    .bpco-sl-header {
        padding: 16px 20px;
    }

    .bpco-sl-list-row {
        padding: 10px 20px;
    }

    .bpco-sl-footer {
        padding: 8px 20px;
    }

    .bpco-sl-new-form {
        padding: 20px;
    }

    .bpco-sl-new-actions {
        padding: 12px 20px 20px;
    }
}