/* Sigma-V - Temas com contraste acessível (WCAG AA) */

:root,
[data-theme="dark"] {
    /* Fundo e superfícies */
    --sigma-bg: #1a1a1a;
    --sigma-surface: #252525;
    /* Texto - contraste alto */
    --sigma-text: #e8e8e8;
    --sigma-text-muted: #b0b0b0;
    --sigma-text-strong: #ffffff;
    /* Linhas e bordas */
    --sigma-stroke: #555555;
    --sigma-stroke-muted: rgba(85, 85, 85, 0.4);
    --sigma-stroke-strong: #777777;
    /* Marcadores (setas) */
    --sigma-marker-hierarchical: #888888;
    --sigma-marker-interconnection: #666666;
    /* Nós - borda */
    --sigma-node-stroke: #ffffff;
}

[data-theme="light"] {
    --sigma-bg: #f5f5f5;
    --sigma-surface: #ffffff;
    --sigma-text: #1a1a1a;
    --sigma-text-muted: #4a4a4a;
    --sigma-text-strong: #0d0d0d;
    --sigma-stroke: #555555;
    --sigma-stroke-muted: rgba(0, 0, 0, 0.25);
    --sigma-stroke-strong: #333333;
    --sigma-marker-hierarchical: #555555;
    --sigma-marker-interconnection: #444444;
    --sigma-node-stroke: #1a1a1a;
}

/* Base */
body {
    margin: 0;
    background: var(--sigma-bg);
    overflow: hidden;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--sigma-text);
    transition: background-color 0.25s ease, color 0.25s ease;
}

#grafo {
    display: block;
    contain: layout style paint;
}

/* Links - performance: will-change só durante animação se necessário */
line {
    stroke: var(--sigma-stroke);
    stroke-opacity: 0.4;
    stroke-width: 1.5px;
    transition: opacity 0.2s, stroke-width 0.2s;
}

/* Nós */
circle {
    stroke: var(--sigma-node-stroke);
    stroke-width: 1px;
    cursor: pointer;
    transition: r 0.15s, opacity 0.2s, fill 0.2s;
}

circle:hover {
    stroke-width: 1.5px;
}

/* Labels */
text {
    fill: var(--sigma-text);
    font-family: sans-serif;
    font-size: 11px;
    pointer-events: none;
    text-anchor: middle;
    dominant-baseline: middle;
    transition: opacity 0.2s;
}

.node-sigma text {
    font-size: 14px;
    font-weight: bold;
    fill: var(--sigma-text-strong);
}

.node-dimension text {
    font-size: 11px;
    font-weight: 600;
    fill: var(--sigma-text-strong);
}

.node-element text {
    font-size: 8px;
    fill: var(--sigma-text);
}

/* Logo Vezor */
.sigma-logo {
    position: fixed;
    top: 26px;
    left: 26px;
    z-index: 11;
    display: flex;
    align-items: center;
    text-decoration: none;
    opacity: 0.9;
}

.sigma-logo:hover {
    opacity: 1;
}

.sigma-logo-img {
    height: 22px;
    width: auto;
    display: block;
}

[data-theme="light"] .sigma-logo-img {
    filter: invert(1);
}

/* Painel flutuante */
.sigma-panel {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 10;
    display: flex;
    flex-direction: row-reverse;
    align-items: flex-start;
    gap: 2px;
    padding: 2px;
}

.sigma-panel-toggle {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    padding: 2px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 8px;
    background: var(--sigma-surface);
    color: var(--sigma-text);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s, border-radius 0.2s ease;
}

.sigma-panel-toggle:hover {
    background: var(--sigma-stroke-muted);
}

.sigma-panel.sigma-panel-collapsed .sigma-panel-toggle {
    border-radius: 8px;
}

.sigma-panel:not(.sigma-panel-collapsed) .sigma-panel-toggle {
    border-bottom-right-radius: 2px;
    border-top-right-radius: 2px;
    border-right: none;
}

.sigma-panel-content {
    background: var(--sigma-surface);
    border: 1px solid var(--sigma-stroke);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    padding: 12px;
    max-height: 420px;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.32, 0.72, 0, 1), opacity 0.3s cubic-bezier(0.32, 0.72, 0, 1), padding 0.35s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.sigma-panel-content.sigma-panel-collapsed {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    pointer-events: none;
    border-color: transparent;
    box-shadow: none;
}

.sigma-panel-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--sigma-stroke-muted);
}

.sigma-panel-actions .sigma-theme-toggle,
.sigma-panel-actions .sigma-refresh-btn {
    flex: 1;
}

/* Controles dentro do painel */
.sigma-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 200px;
}

.sigma-theme-toggle {
    padding: 8px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 8px;
    background: var(--sigma-surface);
    color: var(--sigma-text-muted);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s ease;
}

.sigma-theme-toggle:hover {
    background: var(--sigma-stroke-muted);
    color: var(--sigma-text);
    transform: scale(1.05);
}

.sigma-theme-toggle:active {
    transform: scale(0.98);
}

.sigma-theme-toggle:focus-visible {
    outline: 2px solid var(--sigma-stroke-strong);
    outline-offset: 2px;
}

.sigma-search-wrap {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 8px;
    background: var(--sigma-surface);
    min-width: 200px;
}

.sigma-search {
    flex: 1;
    min-width: 0;
    padding: 6px 8px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--sigma-text);
    font-size: 13px;
    font-family: inherit;
}

.sigma-search::placeholder {
    color: var(--sigma-text-muted);
}

.sigma-search:focus {
    outline: none;
}

.sigma-search-clear {
    padding: 2px 8px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--sigma-text-muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
}

.sigma-search-clear:hover {
    color: var(--sigma-text);
    background: var(--sigma-stroke-muted);
}

.sigma-search-clear:focus-visible {
    outline: 2px solid var(--sigma-stroke-strong);
    outline-offset: 2px;
}

.sigma-level-wrap {
    padding: 8px 12px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 8px;
    background: var(--sigma-surface);
    min-width: 180px;
}

.sigma-level-label {
    display: block;
    font-size: 12px;
    color: var(--sigma-text);
    margin-bottom: 6px;
}

.sigma-select {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 6px;
    background: var(--sigma-surface);
    color: var(--sigma-text);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
}

.sigma-select:focus {
    outline: 2px solid var(--sigma-stroke-strong);
    outline-offset: 2px;
}

.sigma-isolate-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 8px;
    background: var(--sigma-surface);
}

.sigma-toggle-text {
    font-size: 12px;
    color: var(--sigma-text);
    user-select: none;
}

.sigma-toggle-switch {
    position: relative;
    width: 44px;
    height: 22px;
    padding: 0;
    border: 1px solid var(--sigma-stroke);
    border-radius: 11px;
    background: var(--sigma-bg);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.sigma-toggle-switch:hover {
    border-color: var(--sigma-stroke-strong);
}

.sigma-toggle-switch[aria-pressed="true"] {
    background: var(--sigma-stroke-strong);
    border-color: var(--sigma-stroke-strong);
}

.sigma-toggle-knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--sigma-surface);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
}

.sigma-toggle-switch[aria-pressed="true"] .sigma-toggle-knob {
    transform: translateX(22px);
}

.sigma-toggle-switch:focus-visible {
    outline: 2px solid var(--sigma-stroke-strong);
    outline-offset: 2px;
}

.sigma-refresh-btn {
    padding: 8px 12px;
    border: 1px solid var(--sigma-stroke-strong);
    border-radius: 8px;
    background: linear-gradient(135deg, var(--sigma-surface) 0%, var(--sigma-bg) 100%);
    color: var(--sigma-text);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.25s, color 0.2s, border-color 0.2s, transform 0.15s ease, box-shadow 0.2s;
}

.sigma-refresh-btn:hover {
    background: linear-gradient(135deg, var(--sigma-stroke-muted) 0%, var(--sigma-surface) 100%);
    border-color: var(--sigma-text-muted);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sigma-refresh-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.sigma-refresh-btn:focus-visible {
    outline: 2px solid var(--sigma-stroke-strong);
    outline-offset: 2px;
}

.sigma-slider-wrap {
    padding: 8px 12px;
    border: 1px solid var(--sigma-stroke);
    border-radius: 8px;
    background: var(--sigma-surface);
    min-width: 180px;
}

.sigma-slider-label {
    display: block;
    font-size: 12px;
    color: var(--sigma-text);
    margin-bottom: 6px;
}

.sigma-slider {
    width: 100%;
    height: 6px;
    accent-color: var(--sigma-stroke-strong);
    cursor: pointer;
}

.sigma-slider:focus-visible {
    outline: 2px solid var(--sigma-stroke-strong);
    outline-offset: 2px;
}