/* Lightning Network Simulator - Custom Styles */
/* REDESIGNED: Visualization-first approach with top controls and overlay stats */
/* NOTE: Button and form styles inherited from shared-tool-styles.css */

/* ============================================================================
   TOP CONTROL BAR (Horizontal Layout) - Compact Side-by-Side
   ============================================================================ */
.control-bar {
    background: var(--bg-secondary, #f8f9fa);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border, #e9ecef);
}

.control-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.control-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: nowrap;
}

.control-section label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin: 0;
}

.control-section label i {
    color: var(--primary, #e8916b);
}

/* Compact select dropdowns - override shared styles for tighter layout */
.control-section select {
    width: auto;
    min-width: 90px;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    margin-bottom: 0;
    font-size: 0.9rem;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    /* Optionally add a custom arrow icon as a background image here */
}

.control-divider {
    width: 1px;
    height: 32px;
    background: linear-gradient(to bottom, transparent, var(--border, #ddd), transparent);
    flex-shrink: 0;
}

.control-spacer {
    flex: 1;
    min-width: 20px;
}

/* Compact buttons for control bar */
.control-section .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    margin-bottom: 0;
}

.btn-small {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
}

/* ============================================================================
   VISUALIZATION CONTAINER (Full Width + Taller)
   ============================================================================ */
.visualization-container {
    position: relative;
    margin-bottom: 1.5rem;
}

.network-3d {
    width: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #3a2f2a 100%);
    border: 1px solid #ddd;
    border-radius: 12px;
    position: relative;
    height: 85vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    cursor: grab;
}

.network-3d:active {
    cursor: grabbing;
}

/* ============================================================================
   OVERLAY STATS PANEL (Glassmorphism)
   ============================================================================ */
.stats-overlay {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(26, 26, 26, 0.9);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 1rem;
    min-width: 320px;
    max-width: 380px;
    border: 1px solid rgba(232, 145, 107, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 10;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stats-overlay.hidden {
    transform: translateY(calc(100% + 20px));
    opacity: 0;
    pointer-events: none;
}

.stats-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(232, 145, 107, 0.3);
}

.stats-header h4 {
    margin: 0;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stats-header h4 i {
    color: #E8916B;
}

.stats-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.25rem;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.stats-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(232, 145, 107, 0.2) 0%, rgba(232, 145, 107, 0.05) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon i {
    font-size: 1.2rem;
    color: #E8916B;
}

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

.stat-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.25rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    line-height: 1;
}

/* ============================================================================
   CAMERA CONTROLS
   ============================================================================ */
.camera-controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
    z-index: 10;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    color: var(--primary, #e8916b);
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.icon-btn:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.icon-btn.active {
    background: var(--accent-cool, #00d4ff);
    color: white;
}

/* ============================================================================
   LOADING OVERLAY
   ============================================================================ */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 100;
    color: white;
    border-radius: 12px;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--accent-cool, #00d4ff);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

.loading-overlay p {
    margin-top: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
}

/* ============================================================================
   3D TOOLTIP (Enhanced)
   ============================================================================ */
.tooltip-3d {
    position: absolute;
    background: linear-gradient(135deg, rgba(15, 32, 39, 0.98) 0%, rgba(44, 83, 100, 0.98) 100%);
    color: white;
    padding: 0;
    border-radius: 8px;
    font-size: 13px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
    max-width: 350px;
    border: 1px solid rgba(232, 145, 107, 0.3);
}

.tooltip-3d.visible {
    opacity: 1;
}

.tooltip-header {
    background: linear-gradient(135deg, #8293AB 0%, #E8916B 100%);
    padding: 10px 14px;
    border-radius: 8px 8px 0 0;
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tooltip-header i {
    font-size: 16px;
}

.tooltip-body {
    padding: 12px 14px;
    line-height: 1.6;
}

.tooltip-section {
    margin-bottom: 10px;
}

.tooltip-section:last-child {
    margin-bottom: 0;
}

.tooltip-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 3px;
}

.tooltip-value {
    color: white;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.tooltip-value.highlight {
    color: #00d4ff;
    font-size: 16px;
}

.tooltip-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    margin: 10px 0;
}

.balance-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
    display: flex;
}

.balance-bar-fill {
    height: 100%;
    transition: width 0.3s;
}

.balance-bar-left {
    background: linear-gradient(90deg, #8293AB, #6B7B8C);
}

.balance-bar-right {
    background: linear-gradient(90deg, #E8916B, #B8755A);
}

.balance-legend {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 11px;
}

.balance-legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.balance-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.balance-dot.left {
    background: #8293AB;
}

.balance-dot.right {
    background: #E8916B;
}

.channel-list {
    max-height: 150px;
    overflow-y: auto;
    margin-top: 6px;
}

.channel-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 8px;
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.channel-item:last-child {
    margin-bottom: 0;
}

.channel-peer {
    color: #E8916B;
    font-weight: 600;
}

.channel-capacity {
    color: rgba(255, 255, 255, 0.8);
}

/* Custom scrollbar for channel list */
.channel-list::-webkit-scrollbar {
    width: 6px;
}

.channel-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.channel-list::-webkit-scrollbar-thumb {
    background: rgba(0, 212, 255, 0.5);
    border-radius: 3px;
}

.channel-list::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 212, 255, 0.7);
}

/* ============================================================================
   TRANSACTION SECTION (Collapsible)
   ============================================================================ */
.transaction-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-bottom: 2rem;
}

.transaction-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid #e9ecef;
}

.transaction-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.transaction-toggle {
    background: white;
    border: 1px solid #ddd;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.transaction-toggle:hover {
    background: #f8f9fa;
    border-color: var(--accent-cool, #00d4ff);
    color: var(--text-primary);
}

.transaction-toggle i {
    transition: transform 0.3s;
}

.transaction-section.collapsed .transaction-toggle i {
    transform: rotate(180deg);
}

.transaction-content {
    max-height: 600px;
    overflow-y: auto;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.transaction-section.collapsed .transaction-content {
    max-height: 0;
    overflow: hidden;
}

/* Transaction Table - inherits from shared-tool-styles.css */
#transactionTable thead {
    background: linear-gradient(135deg, var(--accent-cool, #00d4ff) 0%, var(--primary, #e8916b) 100%);
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-success {
    background-color: #d4edda;
    color: #155724;
}

.status-failed {
    background-color: #f8d7da;
    color: #721c24;
}

.path-display {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--accent-cool, #00d4ff);
}

.empty-state {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Animation for new transactions */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.transaction-new {
    animation: slideIn 0.5s ease-out;
}

/* ============================================================================
   INSTRUCTIONS SECTION (Collapsible)
   ============================================================================ */
.instructions-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.instructions-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid #e9ecef;
}

.instructions-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.instructions-toggle {
    background: var(--bg-primary);
    border: 1px solid #ddd;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.instructions-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-cool, #00d4ff);
    color: var(--text-primary);
}

.instructions-toggle i {
    transition: transform 0.3s;
}

.instructions-section.collapsed .instructions-toggle i {
    transform: rotate(180deg);
}

.instructions-content {
    max-height: 600px;
    overflow-y: auto;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 1.5rem 1.25rem;
}

.instructions-section.collapsed .instructions-content {
    max-height: 0;
    overflow: hidden;
    padding: 0;
}

/* ============================================================================
   MOBILE RESPONSIVENESS
   ============================================================================ */
@media (max-width: 968px) {
    .control-bar {
        padding: 1rem;
    }

    .control-row {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .control-section {
        width: 100%;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .control-section label {
        width: 100%;
        margin-bottom: 0.25rem;
    }

    .control-section select {
        flex: 1;
        min-width: 0;
    }

    .control-section .btn {
        width: 100%;
    }

    .control-divider {
        width: 100%;
        height: 1px;
        margin: 0;
    }

    .control-spacer {
        display: none;
    }

    .network-3d {
        height: 60vh;
        min-height: 400px;
    }

    .stats-overlay {
        left: 10px;
        right: 10px;
        bottom: 10px;
        min-width: auto;
        max-width: none;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .camera-controls {
        top: 0.5rem;
        right: 0.5rem;
    }

    .icon-btn {
        width: 40px;
        height: 40px;
        font-size: 0.95rem;
    }

    .tooltip-3d {
        max-width: 280px;
        font-size: 12px;
    }

    .transaction-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .transaction-toggle {
        justify-content: center;
    }

    #transactionTable {
        font-size: 0.8rem;
    }

    #transactionTable th,
    #transactionTable td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 640px) {
    .stats-grid {
        gap: 0.5rem;
    }

    .stat-card {
        padding: 0.75rem;
    }

    .stat-icon {
        width: 36px;
        height: 36px;
    }

    .stat-icon i {
        font-size: 1rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .stat-value {
        font-size: 0.95rem;
    }
}

/* ============================================================================
   FLOATING STATS BUTTON
   ============================================================================ */
.floating-stats-btn {
    position: absolute;
    bottom: 24px;
    right: 24px;
    z-index: 20;
    box-shadow: 0 4px 16px rgba(0,0,0,0.10);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.95);
    transition: background 0.2s, box-shadow 0.2s;
}

.floating-stats-btn:hover {
    background: #fff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

@media (max-width: 640px) {
    .floating-stats-btn {
        bottom: 12px;
        right: 12px;
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }
}