:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-card-hover: rgba(30, 41, 59, 0.9);
    --border-color: rgba(255, 255, 255, 0.1);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-a: #ef4444;
    --accent-a-glow: rgba(239, 68, 68, 0.2);
    --accent-b: #eab308;
    --accent-b-glow: rgba(234, 179, 8, 0.2);
    --accent-c: #3b82f6;
    --accent-c-glow: rgba(59, 130, 246, 0.2);
    --accent-n: #a855f7;
    --accent-n-glow: rgba(168, 85, 247, 0.2);

    --primary-cyan: #06b6d4;
    --primary-emerald: #10b981;

    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.12) 0px, transparent 50%);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.5;
}

.dashboard-container {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.dashboard-main,
.settings-main,
.admin-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Header & Controls */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.brand-text h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(to right, #f8fafc, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text .subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.controls-bar {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-group label {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.custom-select {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 14px;
    outline: none;
    cursor: pointer;
    transition: all 0.2s;
}

.custom-select:hover,
.custom-select:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
}

.refresh-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.btn-secondary {
    background: rgba(51, 65, 85, 0.8);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(71, 85, 105, 1);
}

.auto-refresh-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
}

/* Banner */
.circuit-banner {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.banner-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.banner-title h2 {
    font-size: 22px;
    font-weight: 600;
}

.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-primary {
    background: rgba(6, 182, 212, 0.15);
    color: var(--primary-cyan);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.banner-sub {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.banner-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.stat-pill {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 16px;
    display: flex;
    flex-direction: column;
}

.stat-pill .stat-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-pill .stat-val {
    font-size: 18px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

/* Phase Cards Grid */
.phase-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 20px;
}

.phase-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.phase-card:hover {
    transform: translateY(-2px);
    background: var(--bg-card-hover);
}

.phase-a {
    border-top: 4px solid var(--accent-a);
}

.phase-b {
    border-top: 4px solid var(--accent-b);
}

.phase-c {
    border-top: 4px solid var(--accent-c);
}

.phase-n {
    border-top: 4px solid var(--accent-n);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.phase-badge {
    padding: 6px 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 13px;
}

.phase-badge-a {
    background: var(--accent-a-glow);
    color: var(--accent-a);
}

.phase-badge-b {
    background: var(--accent-b-glow);
    color: var(--accent-b);
}

.phase-badge-c {
    background: var(--accent-c-glow);
    color: var(--accent-c);
}

.phase-badge-n {
    background: var(--accent-n-glow);
    color: var(--accent-n);
}

.device-info {
    display: flex;
    flex-direction: column;
}

.device-name {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.2;
}

.device-tag {
    font-size: 12px;
    color: var(--text-muted);
}

.metrics-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    border-radius: 6px;
    background: rgba(15, 23, 42, 0.4);
    font-size: 13px;
}

.metric-title {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.metric-title i {
    width: 14px;
    opacity: 0.7;
}

.metric-value {
    font-family: var(--font-mono);
    font-weight: 600;
}

.highlight-p {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
}

.highlight-p .metric-value {
    color: var(--text-primary);
}

.energy-subgroup {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px dashed var(--border-color);
}

.energy-box {
    background: rgba(15, 23, 42, 0.6);
    padding: 6px;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.energy-box .lbl {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.energy-box .val {
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--primary-cyan);
    margin-top: 2px;
}

.neutral-note {
    font-size: 12px;
    color: var(--text-muted);
    padding: 10px;
    background: rgba(168, 85, 247, 0.08);
    border-radius: 8px;
    margin-top: 8px;
}

/* Chart Section */
.chart-section {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.chart-title-box h2 {
    font-size: 18px;
    font-weight: 600;
}

.chart-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

.chart-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-compare {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 14px;
    font-size: 13px;
}

.btn-compare:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-compare.active {
    background: rgba(6, 182, 212, 0.2);
    color: var(--primary-cyan);
    border-color: var(--primary-cyan);
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
}

.metric-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.metric-tab {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 8px;
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.metric-tab:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.metric-tab.active {
    background: var(--primary-cyan);
    color: #0f172a;
    border-color: var(--primary-cyan);
    font-weight: 600;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}

.chart-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(2px);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    color: var(--primary-cyan);
    z-index: 10;
    border-radius: 8px;
}

/* Table Section */
.table-section {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-title h2 {
    font-size: 18px;
    font-weight: 600;
}

.last-update {
    font-size: 12px;
    color: var(--text-muted);
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: rgba(15, 23, 42, 0.8);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.data-table .font-mono {
    font-family: var(--font-mono);
}

.status-online {
    color: var(--primary-emerald);
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-online::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-emerald);
    box-shadow: 0 0 8px var(--primary-emerald);
}

/* Calculator Section */
.calculator-section {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.calc-header .calc-title-box h2 {
    font-size: 18px;
    font-weight: 600;
}

.calc-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
    gap: 24px;
}

.calc-card {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-row label {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.full-width {
    width: 100%;
}

.input-with-btn {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.custom-input {
    flex: 1;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 14px;
    outline: none;
}

.custom-input:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    color: #fff;
    font-weight: 600;
    justify-content: center;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
    transform: translateY(-1px);
}

.full-width-btn {
    width: 100%;
    padding: 12px;
    margin-top: 8px;
}

/* Results Card */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.currency-badge {
    background: rgba(16, 185, 129, 0.15);
    color: var(--primary-emerald);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
}

.total-bill-box {
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 10px;
    padding: 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.total-lbl {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.total-amt {
    font-size: 28px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--primary-cyan);
}

.effective-lbl {
    font-size: 12px;
    color: var(--text-secondary);
}

.bill-summary-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    padding: 8px 12px;
    background: rgba(15, 23, 42, 0.6);
    border-radius: 6px;
}

.summary-item strong {
    font-family: var(--font-mono);
    color: var(--primary-emerald);
}

.breakdown-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}

.breakdown-box h4 {
    font-size: 13px;
    color: var(--text-secondary);
}

.breakdown-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 10px;
    background: rgba(15, 23, 42, 0.4);
    border-radius: 6px;
}

.breakdown-row .block-name {
    color: var(--text-secondary);
}

.breakdown-row .block-val {
    font-family: var(--font-mono);
}

.muted-text {
    color: var(--text-muted);
    font-size: 12px;
}

@media (max-width: 768px) {

    .app-header,
    .circuit-banner {
        flex-direction: column;
        align-items: flex-start;
    }

    .controls-bar {
        width: 100%;
        justify-content: space-between;
    }

    .chart-container {
        height: 300px;
    }

    .banner-stats {
        width: 100%;
        justify-content: space-between;
    }
}

/* --- Reactive UI Enhancements --- */

/* Click & Hover animations */
.btn {
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn-primary:hover {
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
    transform: translateY(-1px);
}

.metric-tab {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.metric-tab:active {
    transform: scale(0.95);
}

/* Card & Container reactivity */
.calc-card,
.table-section,
.chart-section {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.calc-card:hover,
.table-section:hover,
.chart-section:hover {
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* Input reactivity */
.custom-input,
.custom-select {
    transition: all 0.3s ease;
}

.custom-input:focus,
.custom-select:focus {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
}

/* Brand icon pulse animation */
@keyframes softPulse {
    0% {
        box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
    }

    50% {
        box-shadow: 0 0 35px rgba(6, 182, 212, 0.6);
    }

    100% {
        box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
    }
}

.brand-icon {
    animation: softPulse 3s infinite ease-in-out;
}

.settings-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
    gap: 24px;
}

.settings-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.settings-card:hover {
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.settings-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.settings-card-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.settings-group label {
    font-size: 13px;
    color: var(--text-secondary);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    font-size: 14px;
    color: var(--text-primary);
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-cyan);
    cursor: pointer;
}