/* ========== RESET & BASE ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0d1117;
    --bg-card: #161b22;
    --bg-input: #0d1117;
    --border: #30363d;
    --border-hover: #484f58;
    --accent: #76b900;
    --accent-hover: #8dd100;
    --accent-dim: rgba(118, 185, 0, 0.15);
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --danger: #d9534f;
    --danger-hover: #e66a66;
    --warning: #f0ad4e;
    --success: #76b900;
    --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
    --radius: 8px;
    --radius-sm: 4px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html {
    font-size: 14px;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* ========== HEADER ========== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-left h1 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-left .accent {
    color: var(--accent);
}

.nvidia-logo {
    flex-shrink: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ========== DOTS ========== */
.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    background: var(--text-muted);
}

.dot-online {
    background: var(--success);
    box-shadow: 0 0 6px var(--success);
}

.dot-offline {
    background: var(--danger);
}

/* ========== TAB NAV ========== */
.tab-nav {
    display: flex;
    gap: 2px;
    padding: 0 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-family: var(--font);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ========== CONTENT ========== */
.content {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* ========== CARDS ========== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.card-header {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    font-weight: 600;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.health-card .card-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* ========== PROGRESS BAR ========== */
.progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.6s ease;
}

.progress-fill.warn {
    background: var(--warning);
}

.progress-fill.critical {
    background: var(--danger);
}

.gpu-fill {
    background: var(--accent);
}

/* ========== SAVINGS HERO ========== */
.savings-hero {
    text-align: center;
    padding: 32px 20px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, rgba(118, 185, 0, 0.08) 0%, rgba(118, 185, 0, 0.02) 100%);
    border: 1px solid rgba(118, 185, 0, 0.2);
    border-radius: var(--radius);
}

.savings-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.savings-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.1;
    margin-bottom: 8px;
}

.savings-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ========== OVERVIEW ROW ========== */
.overview-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

@media (max-width: 900px) {
    .overview-row {
        grid-template-columns: 1fr;
    }
}

/* GPU Temp Gauge */
.gpu-temp-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.temp-gauge {
    width: 200px;
}

.gauge-svg {
    width: 100%;
    height: auto;
}

/* Services */
.service-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    padding: 4px 0;
}

/* Quick Stats */
.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ========== TABLES ========== */
.table-card {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 10px 12px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    white-space: nowrap;
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    vertical-align: middle;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 12px !important;
    font-style: italic;
}

.key-truncated {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.key-truncated:hover {
    color: var(--accent);
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-green {
    background: rgba(118, 185, 0, 0.15);
    color: var(--accent);
}

.badge-red {
    background: rgba(217, 83, 79, 0.15);
    color: var(--danger);
}

.badge-yellow {
    background: rgba(240, 173, 78, 0.15);
    color: var(--warning);
}

.badge-gray {
    background: rgba(139, 148, 158, 0.15);
    color: var(--text-secondary);
}

/* ========== TOOLBAR ========== */
.tab-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.tab-toolbar h2 {
    font-size: 1.3rem;
    font-weight: 600;
}

/* ========== BUTTONS ========== */
.btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.btn-danger:hover {
    background: var(--danger-hover);
}

.btn-small {
    padding: 4px 10px;
    font-size: 0.8rem;
}

.btn-icon {
    padding: 4px 8px;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-icon:hover {
    color: var(--danger);
    border-color: var(--danger);
}

.btn-copy {
    background: var(--bg-card);
    border-color: var(--border);
    color: var(--text-primary);
}

.btn-time-range {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 16px;
    font-family: var(--font);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-time-range:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn-time-range.active {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    font-weight: 600;
}

.btn-action {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 16px;
    font-family: var(--font);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.15s;
}
.btn-action:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}
.btn-action.btn-danger {
    background: #d1242f;
    color: #fff;
    border-color: #d1242f;
}
.btn-action.btn-danger:hover {
    background: #b91c1c;
    border-color: #b91c1c;
}

.date-input {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}
.date-input:focus {
    border-color: var(--accent);
}
.date-input::-webkit-calendar-picker-indicator {
    filter: invert(0.7);
    cursor: pointer;
}

/* ========== CHARTS ========== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.charts-grid-2col {
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
}

.chart-card {
    min-height: 280px;
}

.chart-card canvas {
    width: 100% !important;
    max-height: 240px;
}

/* ========== MODALS ========== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 480px;
    max-width: 90vw;
    box-shadow: var(--shadow);
    animation: modalIn 0.2s ease;
}

.modal-sm {
    width: 380px;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

/* ========== FORMS ========== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.9rem;
    transition: border-color 0.15s;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--accent);
}

/* ========== KEY DISPLAY ========== */
.warning-text {
    color: var(--warning);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.key-display {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
}

.key-display code {
    flex: 1;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    word-break: break-all;
    color: var(--accent);
}

/* ========== TOAST ========== */
#toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: #fff;
    box-shadow: var(--shadow);
    animation: toastIn 0.3s ease;
    max-width: 400px;
}

.toast-success {
    background: #1a472a;
    border-left: 3px solid var(--accent);
}

.toast-error {
    background: #4a1a1a;
    border-left: 3px solid var(--danger);
}

.toast-info {
    background: #1a2a4a;
    border-left: 3px solid #58a6ff;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(40px); }
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .content {
        padding: 12px;
    }

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

    .charts-grid,
    .charts-grid-2col {
        grid-template-columns: 1fr;
    }

    .tab-nav {
        padding: 0 8px;
        overflow-x: auto;
    }

    .tab-btn {
        padding: 8px 14px;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .savings-value {
        font-size: 2.5rem;
    }

    .header-left h1 {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}