:root {
    /* Emerald Green Palette - Dark Theme Default */
    --bg-app: #061e13;
    --bg-panel: rgba(13, 47, 30, 0.7);
    --bg-input: #04140c;
    --bg-hover: rgba(46, 204, 113, 0.1);

    --text-main: #f8fafc;
    --text-muted: #94a3b8;

    --border: #1e4a32;
    --border-focus: #2ecc71;

    --primary: #2ecc71;
    --primary-hover: #27ae60;
    --secondary: #27ae60;

    --success: #2ecc71;
    --warning: #f59e0b;
    --danger: #ef4444;

    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

[data-theme="light"] {
    --bg-app: #f0fdf4;
    --bg-panel: rgba(255, 255, 255, 0.8);
    --bg-input: #ffffff;
    --bg-hover: rgba(46, 204, 113, 0.1);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #bbf7d0;
    --border-focus: #22c55e;
    --primary: #22c55e;
    --primary-hover: #16a34a;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-main);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

.app-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.glass {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
}

/* Header */
.navbar {
    height: 64px;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
    border-left: none;
    border-right: none;
    border-top: none;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Typography & Helpers */
.mono-text {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

.text-danger {
    color: var(--danger);
}

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

.text-success {
    color: var(--success);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    padding: 0.6rem 1.2rem;
}

.btn.primary {
    background: var(--primary);
    color: #000;
}

.btn.primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

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

.btn.secondary {
    background: var(--bg-input);
    color: var(--text-main);
    border: 1px solid var(--border);
}

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

.btn.outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
}

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

.btn.sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn.sm {
    width: 24px;
    height: 24px;
    font-size: 1.2rem;
}

.icon-btn:hover {
    background: var(--bg-hover);
    color: var(--primary);
}

.icon-btn.text-danger:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* Main Content */
.main-content {
    flex-grow: 1;
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.panel {
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

/* Config Panel */
.config-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.polling-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.polling-control label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.endpoint-form {
    display: flex;
    gap: 1rem;
}

.text-input,
.select-input {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    outline: none;
    transition: border 0.2s;
    font-family: inherit;
    font-size: 0.95rem;
}

.text-input:focus,
.select-input:focus {
    border-color: var(--primary);
}

.full-width {
    flex-grow: 1;
}

.endpoint-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chip {
    padding: 0.25rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
}

.chip .chip-method {
    font-weight: 700;
    color: var(--primary);
}

.chip button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    margin-top: -2px;
}

.chip button:hover {
    color: var(--danger);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1.5rem;
}

/* Monitor Card */
.monitor-card {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.monitor-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.mc-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.mc-info {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    overflow: hidden;
}

.badge {
    align-self: flex-start;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    background: rgba(46, 204, 113, 0.1);
    color: var(--primary);
    border: 1px solid rgba(46, 204, 113, 0.2);
}

.mc-url {
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-muted);
}

.mc-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mc-status-code {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.1rem;
}

.mc-status-code.ok {
    color: var(--success);
}

.mc-status-code.err {
    color: var(--danger);
}

.mc-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    background: var(--bg-input);
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.metric-box {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.metric-box label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.metric-val {
    font-size: 1.1rem;
    font-weight: 700;
}

.mc-chart-container {
    height: 100px;
    width: 100%;
    position: relative;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    overflow: hidden;
}

.hist-chart {
    width: 100%;
    height: 100%;
    display: block;
}

.mc-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}