:root {
    --bg: #111;
    --text: #eee;
    --accent: #4c8;
    --accent-hover: #3b7;
    --danger: #c44;
    --danger-hover: #a33;
    --connected: #4c4;
    --paused: #f90;
    --muted: #888;
    --panel-bg: #1a1a1a;
    --border: #333;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, sans-serif;
    height: 100vh;
}

.toolbar-dock {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 50;
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(28, 28, 30, 0.85);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.toolbar span { font-size: 15px; opacity: 0.6; white-space: nowrap; }
.toolbar .icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    flex-shrink: 0;
}
.toolbar .icon-btn:hover { background: rgba(255, 255, 255, 0.15); }
.toolbar .icon-btn svg { display: block; width: 32px; height: 32px; }
.toolbar .sep {
    width: 1px;
    height: 18px;
    background: rgba(255, 255, 255, 0.12);
    flex-shrink: 0;
}
.status {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--muted);
    flex-shrink: 0;
}
.status.connected { background: var(--connected); }
.status.paused { background: var(--paused); }

.viewer {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}
.stream-overlay {
    display: none;
    position: absolute;
    inset: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    font-size: 18px;
    color: var(--muted);
    letter-spacing: 0.02em;
}
.stream-overlay.visible { display: flex; }
.stream-overlay .overlay-icon { opacity: 0.25; }
.stream-overlay .overlay-icon svg { width: 64px; height: 64px; }
.stream-overlay.idle {
    background: radial-gradient(circle at 50% 50%, rgba(40, 40, 45, 1) 0%, var(--bg) 70%);
}
.stream-overlay.idle .overlay-icon { opacity: 0.15; }
.stream-overlay.paused {
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    color: var(--paused);
}
.stream-overlay.paused .overlay-icon { opacity: 0.4; }

/* --- Toolbar auto-hide --- */
.toolbar-dock { transition: opacity 0.3s, transform 0.3s; }
.toolbar-dock.hidden { opacity: 0; pointer-events: none; transform: translateX(-50%) translateY(20px); }

/* --- Control panel (server.html) --- */
.toolbar .icon-btn.active { background: var(--accent); color: var(--bg); }
.toolbar .icon-btn.btn-stop { background: var(--danger); color: #fff; }
.toolbar .icon-btn.btn-stop:hover { background: var(--danger-hover); }
.toolbar .icon-btn.btn-start { background: var(--accent); color: var(--bg); }
.toolbar .icon-btn.btn-start:hover { background: var(--accent-hover); }
.stream-overlay.active {
    background: radial-gradient(circle at 50% 50%, rgba(40, 60, 45, 1) 0%, var(--bg) 70%);
    color: var(--accent);
}
.stream-overlay.active .overlay-icon { opacity: 0.3; }

.panel {
    position: fixed;
    top: 0; right: -340px;
    width: 320px;
    height: 100%;
    background: var(--panel-bg);
    border-left: 1px solid var(--border);
    padding: 20px;
    transition: right 0.25s ease;
    z-index: 100;
    overflow-y: auto;
}
.panel.open { right: 0; }
.panel h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.panel h2 button {
    background: none;
    border: none;
    color: var(--muted);
    font-size: 20px;
    cursor: pointer;
    padding: 0 4px;
}
.panel h2 button:hover { color: var(--text); }
.field { margin-bottom: 18px; }
.field label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 6px;
}
.field label .value {
    color: var(--text);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.field input[type="range"] { width: 100%; accent-color: var(--accent); }
.field-hint { font-size: 11px; color: #666; margin-top: 4px; }
.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
}
.toggle-row .toggle-label { font-size: 13px; color: var(--muted); }
.toggle-btn {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    border: none;
    padding: 5px 14px;
    border-radius: 100px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.15s, color 0.15s;
    min-width: 50px;
}
.toggle-btn:hover { background: rgba(255, 255, 255, 0.15); }
.toggle-btn.on { background: var(--accent); color: var(--bg); }
.toggle-btn.off { background: var(--danger); color: #fff; }
.overlay-bg { display: none; position: fixed; inset: 0; z-index: 99; }
.overlay-bg.active { display: block; }

/* --- Viewer (client.html) --- */
#screen { max-width: 100%; max-height: 100%; object-fit: contain; }
.fullscreen .toolbar-dock { opacity: 0; pointer-events: none; transform: translateX(-50%) translateY(20px); }