/* CSS Custom Properties for theming */
:root {
    /* Status colors */
    --color-ok: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;

    /* Phase colors */
    --color-l1: #ff6b35;
    --color-l2: #007bff;
    --color-l3: #28a745;

    /* UI colors */
    --color-bg: #f8f9fa;
    --color-surface: #ffffff;
    --color-text: #333333;
    --color-text-muted: #666666;
    --color-border: #cccccc;

    /* Meter display */
    --meter-bg: #1a1a2e;
    --meter-text: #00ff88;
    --meter-text-warning: #ff6b35;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Animation */
    --animation-flow-duration: 1s;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.header-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.header-right {
    display: flex;
    gap: var(--spacing-xs);
}

/* Dropdown styling */
.dropdown {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--spacing-xs);
    background: var(--color-surface);
    font-size: 0.875rem;
    cursor: pointer;
    min-width: 120px;
}

.dropdown:focus {
    outline: none;
    border-color: var(--color-l2);
}

/* Language toggle */
.lang-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--spacing-xs);
    background: var(--color-surface);
    cursor: pointer;
    font-size: 0.875rem;
}

.lang-btn.active {
    background: var(--color-l2);
    color: white;
    border-color: var(--color-l2);
}

/* Main content */
.main-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

/* Schematic container */
.schematic {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Simplified schematic - centered meter only */
.simplified-schematic {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

/* Grid/Power Pole section */
.grid-section {
    text-align: center;
    min-width: 150px;
}

/* House section */
.house-section {
    text-align: center;
    min-width: 150px;
}

.house-section.tripped {
    opacity: 0.5;
}

/* Current flow animation */
@keyframes flow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

.current-flow {
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg,
        var(--color-ok) 0%,
        #7fd19e 25%,
        var(--color-ok) 50%,
        #7fd19e 75%,
        var(--color-ok) 100%
    );
    background-size: 200% 100%;
    animation: flow var(--animation-flow-duration) linear infinite;
}

.current-flow.warning {
    background: linear-gradient(90deg,
        var(--color-warning) 0%,
        #ffe066 25%,
        var(--color-warning) 50%,
        #ffe066 75%,
        var(--color-warning) 100%
    );
    background-size: 200% 100%;
    animation-duration: 0.75s;
}

.current-flow.danger {
    background: linear-gradient(90deg,
        var(--color-danger) 0%,
        #f8b4b4 25%,
        var(--color-danger) 50%,
        #f8b4b4 75%,
        var(--color-danger) 100%
    );
    background-size: 200% 100%;
    animation-duration: 0.5s;
}

.current-flow.disconnected {
    background: #ccc;
    animation: none;
}

/* Power indicator on house */
.power-indicator {
    fill: var(--color-ok);
}

.power-indicator.warning {
    fill: var(--color-warning);
}

.power-indicator.danger {
    fill: var(--color-danger);
}

/* Meter box - fixed dimensions regardless of language */
.meter-box {
    background: linear-gradient(145deg, #e8e8e8, #ffffff);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    width: 400px; /* Fixed width */
    max-width: 400px;
}

.meter-box.meter-tripped {
    border-color: var(--color-danger);
}

.meter-display {
    background: var(--meter-bg);
    padding: var(--spacing-md);
    border-radius: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.meter-value {
    color: var(--meter-text);
    font-family: 'Courier New', monospace;
    font-size: 2rem;
    text-align: center;
    font-weight: bold;
}

.meter-value-tripped {
    color: var(--meter-text-warning);
}

/* Phases section */
.phases-section {
    background: var(--color-bg);
    border-radius: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.phase-row {
    display: grid;
    grid-template-columns: 45px 1fr 45px 40px; /* Fixed column widths for alignment */
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 2px 0;
    border-left: 3px solid var(--phase-color, var(--color-border));
}

/* Center align Ti, Tdisp, and Power columns */
.phase-row > span:nth-child(2), /* Power column */
.phase-row > span:nth-child(3), /* Ti column */
.phase-row > span:nth-child(4) { /* Tdisp column */
    text-align: center;
}

.phase-row.phase-header {
    background: #e9ecef;
    font-weight: bold;
    font-size: 0.75rem;
    border-left: none;
}

.phase-row.phase-total {
    background: var(--color-bg);
    font-weight: bold;
    border-left: 3px solid #333;
}

.phase-row.tripped {
    background: #f8d7da;
}

.phase-l1 { --phase-color: var(--color-l1); }
.phase-l2 { --phase-color: var(--color-l2); }
.phase-l3 { --phase-color: var(--color-l3); }

/* Threshold info */
.threshold-info {
    background: #e3f2fd;
    padding: var(--spacing-sm);
    border-radius: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.75rem;
}

.threshold-tripped {
    background: #f8d7da;
}

.threshold-row {
    display: flex;
    justify-content: space-between;
    margin: 4px 0;
}

/* Status row */
.status-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.status-row .status-badge,
.status-row .reset-btn {
    flex: 1;
    justify-content: center;
    align-items: center;
    display: flex;
}

.status-badge {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: bold;
    min-width: 140px;
    text-align: center;
    height: 36px;
    box-sizing: border-box;
}

.status-badge {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: bold;
    min-width: 140px;
    text-align: center;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.status-ok {
    background: var(--color-ok);
    color: white;
}

.status-warning {
    background: var(--color-warning);
    color: #333;
}

.status-danger {
    background: var(--color-danger);
    color: white;
}

/* Reset button */
.reset-btn {
    background: var(--color-ok);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: bold;
    cursor: pointer;
    white-space: nowrap;
    height: 36px;
    box-sizing: border-box;
}

.reset-btn:hover {
    opacity: 0.9;
}

.reset-btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Sliders section */
.sliders-section {
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--spacing-sm);
    width: 350px;
    margin-left: auto;
    margin-right: auto;
}

.sliders-label {
    font-weight: bold;
    margin-bottom: var(--spacing-md);
}

.sliders-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.slider-container {
    padding: var(--spacing-xs);
}

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.slider-value {
    font-weight: bold;
    min-width: 60px;
    text-align: right;
}

/* Power sliders - styled but preserving native drag */
.power-slider {
    width: 100%;
    cursor: pointer;
}

.power-slider:active {
    cursor: grabbing;
}

/* Webkit slider thumb styling */
.power-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--phase-color, var(--color-l1));
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Webkit slider track styling */
.power-slider::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--color-border), var(--phase-color, var(--color-l1)));
    cursor: pointer;
}

/* Firefox slider thumb styling */
.power-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--phase-color, var(--color-l1));
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Firefox slider track styling */
.power-slider::-moz-range-track {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--color-border), var(--phase-color, var(--color-l1)));
    cursor: pointer;
}

.sliders-total {
    text-align: center;
    margin-top: var(--spacing-md);
    font-weight: bold;
}

/* Trip curve chart */
.trip-curve {
    width: 350px;
    margin: 0 auto;
    background: var(--color-surface);
    border-radius: var(--spacing-sm);
    padding: var(--spacing-md);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.trip-curve svg {
    display: block;
    max-width: 100%;
    height: auto;
}

@media (max-width: 768px) {
    .trip-curve {
        width: 100%;
        max-width: 350px;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .header-controls {
        order: 3;
        width: 100%;
        justify-content: center;
    }

    .sliders-grid {
        grid-template-columns: 1fr !important;
    }

    .meter-box {
        max-width: 100%;
    }

    .phase-row {
        grid-template-columns: 35px 1fr 55px 40px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .status-row {
        flex-wrap: wrap;
    }

    .status-badge {
        flex: 1;
        min-width: auto;
    }

    .reset-btn {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: 1rem;
    }

    .dropdown {
        min-width: 100px;
        font-size: 0.75rem;
    }

    .meter-value {
        font-size: 1.5rem;
    }

    .phase-row {
        grid-template-columns: 30px 1fr 50px 38px;
        font-size: 0.7rem;
    }
}