:root {
    /* ── Color palette ──────────────────────────────────────────── */
    --bg-base:        #080c14;
    --bg-surface:     #0d1320;
    --bg-card:        rgba(15, 22, 38, 0.85);
    --bg-card-hover:  rgba(20, 30, 52, 0.95);
    --bg-sidebar:     rgba(10, 16, 30, 0.92);
    --border:         rgba(56, 100, 180, 0.18);
    --border-bright:  rgba(56, 140, 255, 0.35);

    --accent:         #2979ff;
    --accent-glow:    rgba(41, 121, 255, 0.25);
    --accent-dim:     rgba(41, 121, 255, 0.12);
    --green:          #00e676;
    --green-glow:     rgba(0, 230, 118, 0.2);
    --red:            #ff5252;
    --amber:          #ffab40;

    --text-primary:   #e8edf5;
    --text-secondary: #8899bb;
    --text-muted:     #4d5e7a;

    /* ── Typography ─────────────────────────────────────────────── */
    --font-main:  'Inter', system-ui, sans-serif;
    --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

    /* ── Spacing / radius ───────────────────────────────────────── */
    --radius-sm:  8px;
    --radius-md:  14px;
    --radius-lg:  20px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255,255,255,0.04) inset;
}

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

html, body {
    height: 100%;
    font-family: var(--font-main);
    background-color: var(--bg-base);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

/* Subtle animated grid background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(41, 121, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(41, 121, 255, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ── Layout shell ──────────────────────────────────────────────── */
.sv-layout {
    display: grid;
    grid-template-rows: 56px 1fr;
    grid-template-columns: 1fr 300px;
    grid-template-areas:
        "topbar topbar"
        "main   sidebar";
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ── Top bar ───────────────────────────────────────────────────── */
.sv-topbar {
    grid-area: topbar;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background: rgba(8, 12, 20, 0.92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.sv-topbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sv-topbar-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--accent), #1a56d6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.sv-topbar-title {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--text-primary);
}

.sv-topbar-subtitle {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

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

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

.sv-clock {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.08em;
}

/* System status pill */
.sv-status-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--accent-dim);
    border: 1px solid var(--border-bright);
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.sv-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse-green 2s infinite;
    box-shadow: 0 0 8px var(--green);
}

/* ── Main content area ─────────────────────────────────────────── */
.sv-main {
    grid-area: main;
    padding: 24px;
    overflow-y: auto;
}

.sv-section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.sv-section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sv-section-count {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid var(--border-bright);
    border-radius: 999px;
    padding: 1px 8px;
}

/* ── Camera Grid ───────────────────────────────────────────────── */
.sv-camera-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
    gap: 20px;
}

/* ── Camera Card ───────────────────────────────────────────────── */
.sv-camera-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
}

.sv-camera-card:hover {
    border-color: var(--border-bright);
    box-shadow: var(--shadow-card), 0 0 40px var(--accent-glow);
    transform: translateY(-2px);
}

/* Card header */
.sv-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    background: rgba(0,0,0,0.2);
}

.sv-card-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sv-card-icon {
    font-size: 16px;
    color: var(--accent);
    opacity: 0.85;
}

.sv-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.sv-card-id {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* LIVE badge */
.sv-live-badge {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.14em;
    color: var(--green);
    text-transform: uppercase;
}

.sv-live-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse-green 1.5s infinite;
    box-shadow: 0 0 10px var(--green);
}

/* ── Video player area ─────────────────────────────────────────── */
.sv-video-wrap {
    position: relative;
    width: 100%;
    background: #000;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.sv-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Overlay shown while connecting */
.sv-video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background: radial-gradient(ellipse at center, rgba(8,12,20,0.6) 0%, rgba(8,12,20,0.95) 100%);
    color: var(--text-secondary);
    font-size: 13px;
    transition: opacity 0.4s ease;
    z-index: 10; /* above FPS canvas (5), scanlines (2), timestamp (3) */
}

.sv-video-overlay.hidden { opacity: 0; pointer-events: none; }

.sv-spinner {
    width: 36px;
    height: 36px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Scanline FX overlay */
.sv-scanlines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0,0,0,0.04) 2px,
        rgba(0,0,0,0.04) 4px
    );
    pointer-events: none;
    z-index: 2;
}

/* Timestamp watermark */
.sv-video-timestamp {
    position: absolute;
    bottom: 10px;
    left: 12px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: rgba(255,255,255,0.5);
    z-index: 3;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

/* Stream URL badge bottom-right */
.sv-stream-badge {
    position: absolute;
    bottom: 10px;
    right: 12px;
    font-family: var(--font-mono);
    font-size: 9px;
    color: rgba(41, 121, 255, 0.6);
    z-index: 3;
}

/* Card footer */
.sv-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px;
    border-top: 1px solid var(--border);
    background: rgba(0,0,0,0.15);
}

.sv-card-stat {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.sv-card-stat span { color: var(--text-secondary); }

/* ── Sidebar ───────────────────────────────────────────────────── */
.sv-sidebar {
    grid-area: sidebar;
    background: var(--bg-sidebar);
    border-left: 1px solid var(--border);
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.sv-sidebar-section {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sv-sidebar-heading {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    background: rgba(0,0,0,0.25);
    border-bottom: 1px solid var(--border);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.sv-sidebar-heading-icon { color: var(--accent); }

.sv-sidebar-body {
    padding: 16px 14px;
}

/* Future alerts placeholder */
.sv-placeholder-alert {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 24px 12px;
    text-align: center;
    color: var(--text-muted);
}

.sv-placeholder-alert-icon {
    font-size: 28px;
    opacity: 0.25;
}

.sv-placeholder-alert-text {
    font-size: 12px;
    line-height: 1.6;
}

.sv-placeholder-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--amber);
    background: rgba(255, 171, 64, 0.08);
    border: 1px solid rgba(255, 171, 64, 0.2);
    border-radius: 4px;
    padding: 2px 8px;
    text-transform: uppercase;
}

/* System info panel */
.sv-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    font-size: 11px;
}

.sv-info-row:last-child { border-bottom: none; }
.sv-info-label { color: var(--text-muted); }
.sv-info-value {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 10px;
}

.sv-info-value.online { color: var(--green); }
.sv-info-value.offline { color: var(--red); }

/* ── Animations ────────────────────────────────────────────────── */
@keyframes pulse-green {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.6; transform: scale(0.85); }
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.sv-camera-card {
    animation: fadeIn 0.4s ease both;
}

/* Stagger cards */
.sv-camera-card:nth-child(1) { animation-delay: 0.05s; }
.sv-camera-card:nth-child(2) { animation-delay: 0.12s; }
.sv-camera-card:nth-child(3) { animation-delay: 0.19s; }
.sv-camera-card:nth-child(4) { animation-delay: 0.26s; }

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .sv-layout {
        grid-template-columns: 1fr;
        grid-template-areas:
            "topbar"
            "main"
            "sidebar";
    }
    .sv-sidebar {
        border-left: none;
        border-top: 1px solid var(--border);
    }
}

@media (max-width: 600px) {
    .sv-camera-grid { grid-template-columns: 1fr; }
    .sv-main { padding: 14px; }
}

/* ═══════════════════════════════════════════════════════════════════
   STREAM STATS BAR
   ═══════════════════════════════════════════════════════════════════ */
.sv-stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.25);
    overflow: hidden;
}

.sv-stat-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 10px 14px;
    border-right: 1px solid var(--border);
    transition: background 0.2s;
}
.sv-stat-item:last-child { border-right: none; }
.sv-stat-item:hover { background: rgba(41, 121, 255, 0.05); }

.sv-stat-label {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sv-stat-value {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s;
}

.sv-stat-value.good   { color: var(--green); }
.sv-stat-value.warn   { color: var(--amber); }
.sv-stat-value.bad    { color: var(--red); }
.sv-stat-value.muted  { color: var(--text-muted); }

/* Bitrate sparkline under the value */
.sv-bitrate-bar {
    height: 2px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 4px;
}
.sv-bitrate-fill {
    height: 100%;
    background: var(--green);
    border-radius: 2px;
    transition: width 0.5s ease, background 0.3s;
}

/* ═══════════════════════════════════════════════════════════════════
   CONTROLS PANEL
   ═══════════════════════════════════════════════════════════════════ */
.sv-controls-panel {
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.sv-controls-panel.open { max-height: 380px; }

.sv-controls-inner {
    padding: 14px 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ── Controls row ────── */
.sv-ctrl-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sv-ctrl-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    min-width: 56px;
    flex-shrink: 0;
}

/* ── Quality buttons ─── */
.sv-quality-btns {
    display: flex;
    gap: 4px;
}

.sv-quality-btn {
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.15s;
    letter-spacing: 0.04em;
}
.sv-quality-btn:hover {
    border-color: var(--border-bright);
    color: var(--text-primary);
    background: rgba(41, 121, 255, 0.08);
}
.sv-quality-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 2px 10px var(--accent-glow);
}
.sv-quality-btn[data-quality="ultra"].active {
    background: var(--amber);
    border-color: var(--amber);
    box-shadow: 0 2px 10px rgba(255,171,64,0.3);
}
.sv-quality-btn.switching {
    opacity: 0.5;
    pointer-events: none;
}

/* Quality hint sub-label */
.sv-quality-hint {
    display: block;
    font-size: 8px;
    font-weight: 400;
    opacity: 0.7;
    letter-spacing: 0;
}
.sv-quality-btn { line-height: 1.2; }

/* ── FPS buttons ─────── */
.sv-fps-btns {
    display: flex;
    gap: 3px;
}
.sv-fps-btn {
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 10px;
    font-weight: 600;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.15s;
}
.sv-fps-btn:hover {
    border-color: var(--border-bright);
    color: var(--text-primary);
    background: rgba(41, 121, 255, 0.08);
}
.sv-fps-btn.active {
    background: rgba(0, 230, 118, 0.12);
    border-color: var(--green);
    color: var(--green);
}

/* ── Zoom slider ─────── */
.sv-zoom-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.sv-zoom-btn {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
}
.sv-zoom-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}
.sv-zoom-btn:active { transform: scale(0.9); }

.sv-zoom-slider {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    border-radius: 4px;
    background: var(--border);
    outline: none;
    cursor: pointer;
}
.sv-zoom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
    cursor: pointer;
    transition: transform 0.1s;
}
.sv-zoom-slider::-webkit-slider-thumb:hover { transform: scale(1.3); }

.sv-zoom-level {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
    min-width: 32px;
    text-align: right;
}

/* ── PTZ pad ────────── */
.sv-ptz-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sv-ptz-pad {
    display: grid;
    grid-template-columns: repeat(3, 32px);
    grid-template-rows: repeat(3, 32px);
    gap: 3px;
}

.sv-ptz-btn {
    border-radius: 7px;
    border: 1px solid var(--border);
    background: rgba(0,0,0,0.3);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    user-select: none;
    -webkit-user-select: none;
}
.sv-ptz-btn:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
    color: var(--accent);
}
.sv-ptz-btn:active {
    background: var(--accent);
    color: #fff;
    transform: scale(0.9);
}
.sv-ptz-btn.center {
    background: rgba(41, 121, 255, 0.06);
    cursor: default;
    font-size: 8px;
    color: var(--text-muted);
}

/* ── Panel toggle in card header ── */
.sv-card-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sv-panel-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 9px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.15s;
}
.sv-panel-toggle:hover {
    border-color: var(--border-bright);
    color: var(--text-secondary);
    background: rgba(255,255,255,0.04);
}
.sv-panel-toggle.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}
.sv-panel-toggle .sv-toggle-arrow {
    transition: transform 0.25s;
    font-size: 10px;
}
.sv-panel-toggle.active .sv-toggle-arrow { transform: rotate(180deg); }

/* PTZ not available badge */
.sv-ptz-unavailable {
    font-size: 11px;
    color: var(--text-muted);
    font-style: italic;
    padding: 8px 0;
}

/* ── Status Pills (Topbar) ─────────────────────────────────────────── */
.sv-status-pill.offline {
    background: rgba(255, 82, 82, 0.15);
    border-color: rgba(255, 82, 82, 0.35);
    color: var(--red);
}
.sv-status-pill.offline .sv-status-dot {
    background-color: var(--red);
    box-shadow: 0 0 8px var(--red);
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.sv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}
.sv-btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border);
    color: var(--text-primary);
}
.sv-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-bright);
}
.sv-btn-accent {
    background: var(--accent);
    color: #ffffff;
}
.sv-btn-accent:hover {
    background: #448aff;
    box-shadow: 0 0 12px rgba(41, 121, 255, 0.4);
}
.sv-btn-danger {
    background: rgba(255, 82, 82, 0.15);
    border: 1px solid rgba(255, 82, 82, 0.3);
    color: var(--red);
}
.sv-btn-danger:hover {
    background: var(--red);
    color: #fff;
    box-shadow: 0 0 12px rgba(255, 82, 82, 0.4);
}
.sv-btn-secondary.active {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
}

/* ── Diagnostic Panel (Test Mode) ──────────────────────────────────── */
.sv-diagnostic-panel, .sv-sync-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}
.sv-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
}
.sv-panel-header-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.02em;
}
.sv-panel-header-title i {
    font-size: 18px;
    color: var(--accent);
}
.sv-panel-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 20px;
}
@media (max-width: 1024px) {
    .sv-panel-grid {
        grid-template-columns: 1fr;
    }
}
.sv-panel-card {
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    flex-direction: column;
}
.sv-panel-card.full-width {
    grid-column: 1 / -1;
}
.sv-card-header-sub {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sv-card-header-sub.align-center {
    justify-content: space-between;
}
.sv-card-header-sub i {
    color: var(--accent);
}
.sv-diagnostic-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    padding: 20px 0;
}
.sv-spinner-sm {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: sv-spin 0.8s linear infinite;
}
@keyframes sv-spin {
    to { transform: rotate(360deg); }
}

/* Cameras status grid */
.sv-camera-status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}
.sv-diag-camera-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    position: relative;
    overflow: hidden;
}
.sv-diag-camera-card.ok { border-color: rgba(0, 230, 118, 0.3); background: rgba(0, 230, 118, 0.02); }
.sv-diag-camera-card.degraded { border-color: rgba(255, 171, 64, 0.3); background: rgba(255, 171, 64, 0.02); }
.sv-diag-camera-card.offline { border-color: rgba(255, 82, 82, 0.3); background: rgba(255, 82, 82, 0.02); }

.sv-diag-cam-status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.sv-diag-cam-name {
    font-weight: 700;
    font-size: 13px;
    color: var(--text-primary);
}
.sv-diag-status-badge {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
}
.ok .sv-diag-status-badge { background: rgba(0, 230, 118, 0.15); color: var(--green); }
.degraded .sv-diag-status-badge { background: rgba(255, 171, 64, 0.15); color: var(--amber); }
.offline .sv-diag-status-badge { background: rgba(255, 82, 82, 0.15); color: var(--red); }

.sv-diag-cam-details {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.6;
}
.sv-diag-cam-details .lbl {
    color: var(--text-muted);
}
.sv-fallback-active-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 6px;
    background: rgba(255, 171, 64, 0.15);
    color: var(--amber);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

/* Streams Health Table */
.sv-table-responsive {
    overflow-x: auto;
}
.sv-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}
.sv-table th, .sv-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.sv-table th {
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(0,0,0,0.1);
}
.sv-table tbody tr:hover {
    background: rgba(255,255,255,0.01);
}
.sv-td-loading {
    text-align: center;
    padding: 24px;
    color: var(--text-secondary);
}
.sv-mono {
    font-family: var(--font-mono);
}
.sv-stream-badge {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
}
.sv-stream-badge.active { background: rgba(0, 230, 118, 0.15); color: var(--green); }
.sv-stream-badge.inactive { background: rgba(255, 82, 82, 0.15); color: var(--red); }

/* Tunnel Status Details */
.sv-tunnel-status-alert.error {
    background: rgba(255, 82, 82, 0.08);
    border: 1px solid rgba(255, 82, 82, 0.2);
    color: var(--red);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
}
.sv-tunnel-status-alert.error p {
    font-size: 11px;
    margin-top: 6px;
    line-height: 1.5;
}
.sv-tunnel-detail-card {
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: rgba(255, 255, 255, 0.01);
}
.sv-tunnel-detail-card.running { border-color: rgba(0, 230, 118, 0.2); }
.sv-tunnel-detail-card.degraded { border-color: rgba(255, 171, 64, 0.2); }
.sv-tunnel-detail-card.stopped { border-color: rgba(255, 82, 82, 0.2); }

.sv-tunnel-detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
}
.sv-tunnel-detail-row .lbl {
    color: var(--text-muted);
}
.sv-tunnel-detail-row .val.bold {
    font-weight: 700;
}
.running .val { color: var(--green); }
.degraded .val { color: var(--amber); }
.stopped .val { color: var(--red); }

.sv-tunnel-detail-row a {
    color: var(--accent);
    text-decoration: none;
}
.sv-tunnel-detail-row a:hover {
    text-decoration: underline;
}

/* Log Viewer Container */
.sv-log-container {
    background: #040810;
    border: 1px solid #102035;
    border-radius: var(--radius-sm);
    height: 240px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 12px;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.8);
}
.sv-log-inner {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.sv-log-line {
    white-space: pre-wrap;
    line-height: 1.5;
    display: flex;
    gap: 8px;
}
.sv-log-timestamp {
    color: #4a638d;
    flex-shrink: 0;
}
.sv-log-level {
    font-weight: 700;
    flex-shrink: 0;
    width: 50px;
}
.sv-log-line.info .sv-log-level { color: #2979ff; }
.sv-log-line.warn .sv-log-level { color: #ffab40; }
.sv-log-line.error .sv-log-level { color: #ff5252; }
.sv-log-line.system { color: #78909c; font-style: italic; }

.sv-log-msg {
    color: #e3f2fd;
}
.sv-log-footer {
    display: flex;
    justify-content: flex-end;
    padding-top: 8px;
    font-size: 11px;
}

.sv-log-controls {
    display: flex;
    gap: 8px;
}
.sv-input-sm {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: #fff;
    font-size: 12px;
    padding: 4px 8px;
    outline: none;
    font-family: var(--font-main);
}
.sv-input-sm:focus {
    border-color: var(--accent);
}
.sv-btn-sm {
    font-family: var(--font-main);
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    border: 1px solid transparent;
}

/* ── Modal Backdrop ─────────────────────────────────────────────────── */
.sv-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(4, 7, 16, 0.85);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: sv-fadein 0.2s ease-out;
}
@keyframes sv-fadein {
    from { opacity: 0; }
    to { opacity: 1; }
}
.sv-modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 580px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
    overflow: hidden;
    animation: sv-scaleup 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes sv-scaleup {
    from { transform: scale(0.95); }
    to { transform: scale(1); }
}
.sv-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    background: rgba(0,0,0,0.1);
}
.sv-modal-title {
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sv-modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    transition: color 0.15s;
}
.sv-modal-close:hover {
    color: var(--text-primary);
}
.sv-modal-body {
    padding: 24px;
    max-height: 70vh;
    overflow-y: auto;
}
.sv-modal-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: rgba(0,0,0,0.1);
}
.sv-modal-error {
    color: var(--red);
    font-size: 12px;
    margin-right: auto;
    font-weight: 600;
}

/* ── Forms inside Modal ─────────────────────────────────────────────── */
.sv-form-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.sv-form-row {
    display: flex;
    gap: 16px;
}
.sv-form-row .sv-form-group {
    flex: 1;
}
.sv-form-row .flex-3 { flex: 3; }
.sv-form-row .flex-1 { flex: 1; }

.sv-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}
.sv-input {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 13px;
    padding: 10px 14px;
    outline: none;
    transition: border-color 0.2s;
    font-family: var(--font-main);
}
.sv-input:focus {
    border-color: var(--accent);
}
.sv-input-inline {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: #fff;
    font-size: 12px;
    padding: 2px 6px;
    width: 60px;
    outline: none;
    margin-left: 8px;
}
.sv-input-inline:disabled {
    opacity: 0.5;
}

/* Radio & Checkbox layouts */
.sv-radio-group, .sv-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
}
.sv-checkbox-group {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
}
.sv-radio-label, .sv-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
    color: var(--text-primary);
    user-select: none;
}
.sv-radio-label input, .sv-checkbox-label input {
    accent-color: var(--accent);
    cursor: pointer;
}
.sv-form-group.checkbox-only {
    flex-direction: column;
    gap: 12px;
    margin-top: 14px;
}

/* ── Progress & Sync UI ──────────────────────────────────────────────── */
.sv-progress-row {
    margin-bottom: 20px;
}
.sv-progress-bar-container {
    height: 12px;
    background: rgba(0,0,0,0.3);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
    margin-bottom: 8px;
}
.sv-progress-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 6px;
    transition: width 0.3s ease, background 0.3s ease;
}
.sv-progress-text {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.sv-sync-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}
.sv-sync-stat-box {
    background: rgba(0,0,0,0.15);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.sv-sync-stat-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}
.sv-sync-stat-val {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
}

.sv-current-file-box {
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 12px;
    display: flex;
    gap: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.sv-current-file-label {
    color: var(--text-muted);
    font-weight: 600;
    flex-shrink: 0;
}
.sv-current-file-val {
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

/* Completion Report */
.sv-report-box {
    margin-top: 20px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    animation: sv-fadein 0.3s;
}
.sv-report-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.sv-report-title.success { color: var(--green); }
.sv-report-title.error { color: var(--red); }
.sv-report-title.warn { color: var(--amber); }

.sv-report-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 20px;
    font-size: 12px;
}
.report-stat-row {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
}
.report-stat-row .val {
    font-weight: 600;
    color: var(--text-primary);
}
.report-stat-row .val.green { color: var(--green); }
.report-stat-row .val.red { color: var(--red); }
.report-stat-row .val.warn { color: var(--amber); }
.report-stat-row .val.error-msg {
    font-family: var(--font-mono);
    font-size: 11px;
}

.sv-failed-files-container {
    margin-top: 14px;
    border-top: 1px solid var(--border);
    padding-top: 12px;
}
.sv-failed-files-container h5 {
    font-size: 12px;
    color: var(--red);
    margin-bottom: 6px;
}
.sv-failed-files-container ul {
    list-style: none;
    max-height: 100px;
    overflow-y: auto;
    background: rgba(0,0,0,0.2);
    padding: 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
    line-height: 1.5;
}
.sv-failed-files-container li {
    margin-bottom: 4px;
    border-bottom: 1px dashed rgba(255,255,255,0.05);
    padding-bottom: 4px;
}
.sv-failed-files-container li:last-child {
    border-bottom: none;
}
.sv-failed-files-container .file {
    color: var(--text-secondary);
}
.sv-failed-files-container .reason {
    color: var(--red);
}

.hidden {
    display: none !important;
}

.pulse {
    animation: sv-pulse-anim 1.5s infinite alternate;
}
@keyframes sv-pulse-anim {
    from { opacity: 0.6; }
    to { opacity: 1; }
}