/* GreenView — Dark theme viewer styles */

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border: #334155;
    --accent: #22c55e;
    --accent-hover: #16a34a;
    --danger: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ─── Top bar ─────────────────────────────────────────────────────────────── */

#topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    gap: 12px;
    flex-shrink: 0;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar-left .logo { font-size: 24px; }
.topbar-left h1 { font-size: 18px; font-weight: 600; }

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

.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ─── Toolbar ─────────────────────────────────────────────────────────────── */

#toolbar {
    display: flex;
    align-items: center;
    padding: 4px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    gap: 8px;
    flex-shrink: 0;
    flex-wrap: wrap;
    min-height: 36px;
}

.toolbar-section {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.toolbar-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.toolbar-divider {
    width: 1px;
    height: 20px;
    background: var(--border);
    margin: 0 4px;
}

/* ─── Buttons and inputs ──────────────────────────────────────────────────── */

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    white-space: nowrap;
}

.btn-sm:hover { background: #475569; }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: rgba(239,68,68,0.15); }

.nav-btn {
    padding: 4px 8px;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
}

.nav-btn:hover { background: #475569; }

input[type="date"], select {
    padding: 4px 8px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

select { cursor: pointer; }

/* ─── Signal chips ────────────────────────────────────────────────────────── */

.signal-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    cursor: default;
    white-space: nowrap;
}

.signal-chip .chip-color {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.signal-chip .chip-remove {
    cursor: pointer;
    opacity: 0.5;
    font-size: 13px;
    line-height: 1;
}

.signal-chip .chip-remove:hover { opacity: 1; color: var(--danger); }

.signal-chip .chip-axis {
    font-size: 9px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0 2px;
    border-radius: 3px;
}

.signal-chip .chip-axis:hover {
    background: var(--accent);
    color: white;
}

/* ─── Chart container ─────────────────────────────────────────────────────── */

#chartContainer {
    flex: 1;
    position: relative;
    min-height: 0;
}

#mainChart {
    width: 100%;
    height: 100%;
}

#loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Stats bar ───────────────────────────────────────────────────────────── */

#statsBar {
    display: flex;
    align-items: center;
    padding: 4px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    gap: 16px;
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.stat { white-space: nowrap; }

/* ─── Modal ───────────────────────────────────────────────────────────────── */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.hidden { display: none; }

.modal-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    min-width: 400px;
    max-width: 90vw;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.modal-card h3 { margin-bottom: 16px; }

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

/* ─── Signal picker groups ────────────────────────────────────────────────── */

.signal-group {
    margin-bottom: 16px;
}

.signal-group-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 600;
}

.signal-group-header:hover { background: #475569; }

.signal-group-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    padding-left: 8px;
}

.signal-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.signal-item:hover { background: var(--bg-tertiary); }

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

.signal-item .signal-unit {
    color: var(--text-secondary);
    font-size: 11px;
}

.signal-item .signal-res {
    color: var(--accent);
    font-size: 10px;
    margin-left: auto;
}

/* ─── Utility ─────────────────────────────────────────────────────────────── */

.hidden { display: none !important; }