/**
 * Bottom Sheet Component
 * Mobile-first component info panel that slides up from the bottom
 */

/* ============================================
   BASE BOTTOM SHEET STYLES
   ============================================ */

.bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 80vh;
    background: var(--panel-bg, rgba(29, 29, 29, 0.98));
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    z-index: var(--z-sheets, 40);
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.bottom-sheet.visible {
    transform: translateY(0);
}

.bottom-sheet.hidden {
    transform: translateY(100%);
    pointer-events: none;
}

/* ============================================
   BACKDROP (click outside to close)
   ============================================ */

.sheet-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-backdrop, 35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.sheet-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

/* Drag Handle */
.sheet-handle {
    display: flex;
    justify-content: center;
    padding: 12px 0 8px;
    cursor: grab;
    touch-action: none;
}

.sheet-handle:active {
    cursor: grabbing;
}

.handle-bar {
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    transition: background 0.2s;
}

.sheet-handle:hover .handle-bar {
    background: rgba(255, 255, 255, 0.5);
}

/* Sheet Content */
.sheet-content {
    flex: 1;
    overflow-y: auto;
    padding: 0 1.25rem 1.5rem;
    -webkit-overflow-scrolling: touch;
}

/* Close Button */
.close-sheet {
    position: absolute;
    top: 12px;
    right: 16px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary, #a0a0a0);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.2s;
}

.close-sheet:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary, #ffffff);
}

/* ============================================
   SHEET HEADER
   ============================================ */

.sheet-header {
    margin-bottom: 1rem;
    padding-right: 40px; /* Space for close button */
}

.sheet-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary, #ffffff);
    margin: 0 0 0.25rem;
}

.sheet-role {
    font-size: 0.85rem;
    color: var(--text-secondary, #a0a0a0);
    font-style: italic;
}

/* ============================================
   INLINE COMPARISON
   ============================================ */

.comparison-inline {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.comparison-current,
.comparison-alternative {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.comparison-arrow {
    color: var(--text-secondary, #a0a0a0);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.comp-label {
    font-size: 0.7rem;
    color: var(--text-secondary, #a0a0a0);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comp-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary, #ffffff);
}

.alternatives-select {
    width: 100%;
    padding: 0.4rem 0.5rem;
    background: rgba(64, 64, 64, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--text-primary, #ffffff);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
}

.alternatives-select:focus {
    outline: none;
    border-color: var(--cf-orange, #F6821F);
}

/* ============================================
   METRICS COMPARISON
   ============================================ */

.metrics-comparison {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.metrics-comparison.hidden {
    display: none;
}

.metric-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.metric-name {
    width: 70px;
    color: var(--text-secondary, #a0a0a0);
    flex-shrink: 0;
}

.metric-current {
    color: var(--text-primary, #ffffff);
    font-weight: 500;
}

.metric-arrow {
    color: var(--text-secondary, #a0a0a0);
    font-size: 0.75rem;
}

.metric-new {
    color: var(--text-primary, #ffffff);
    font-weight: 600;
}

.metric-diff-badge {
    margin-left: auto;
}

/* ============================================
   WARNING
   ============================================ */

.sheet-warning {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.sheet-warning.hidden {
    display: none;
}

.sheet-warning .warning-icon {
    flex-shrink: 0;
}

.sheet-warning .warning-text {
    font-size: 0.8rem;
    color: #ffc107;
    line-height: 1.4;
}

/* ============================================
   DESCRIPTION & REASONS
   ============================================ */

.sheet-description {
    font-size: 0.9rem;
    color: var(--text-secondary, #a0a0a0);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.sheet-reasons h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cf-orange, #F6821F);
    margin-bottom: 0.5rem;
}

.reasons-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

.reasons-list li {
    padding: 0.25rem 0;
    padding-left: 1rem;
    position: relative;
    color: var(--text-secondary, #a0a0a0);
    font-size: 0.85rem;
    line-height: 1.4;
}

.reasons-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--cf-orange, #F6821F);
}

/* ============================================
   ACTIONS
   ============================================ */

.sheet-actions {
    display: flex;
    gap: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-apply {
    flex: 1;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #10B981, #059669);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-apply:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-apply.hidden {
    display: none;
}

.btn-docs {
    padding: 0.75rem 1rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: var(--text-primary, #ffffff);
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-docs:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

/* ============================================
   DESKTOP LAYOUT
   On larger screens, show as a side panel instead
   ============================================ */

@media (min-width: 769px) {
    .bottom-sheet {
        /* On desktop, position as right-side panel */
        top: var(--header-height, 70px);
        bottom: var(--footer-height, 60px);
        left: auto;
        right: 0;
        width: 360px;
        max-height: none;
        border-radius: 12px 0 0 12px;
        transform: translateX(100%);
    }

    .bottom-sheet.visible {
        transform: translateX(0);
    }

    .bottom-sheet.hidden {
        transform: translateX(100%);
    }

    .sheet-handle {
        display: none; /* No drag handle on desktop */
    }

    .sheet-content {
        padding-top: 1rem;
    }
}

/* ============================================
   MOBILE SPECIFIC
   ============================================ */

@media (max-width: 768px) {
    .bottom-sheet {
        max-height: 90vh;
    }

    .sheet-content {
        padding-bottom: 80px; /* Extra padding for safe area */
    }

    /* Snap points for drag */
    .bottom-sheet[data-snap="peek"] {
        max-height: 30vh;
    }

    .bottom-sheet[data-snap="half"] {
        max-height: 50vh;
    }

    .bottom-sheet[data-snap="full"] {
        max-height: 90vh;
    }

    .comparison-inline {
        flex-direction: column;
        gap: 0.75rem;
    }

    .comparison-arrow {
        transform: rotate(90deg);
    }

    .sheet-actions {
        flex-direction: column;
    }

    .btn-apply,
    .btn-docs {
        width: 100%;
        text-align: center;
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    .bottom-sheet {
        transition: none;
    }
}