/* ============================================================
   SIGNAL — AI Feature Styles
   Uses existing CSS custom properties from styles.css
   ============================================================ */

/* ── Robot intro ── */
.signal-robot {
    position: fixed;
    bottom: 1.6rem;
    left: -100px;
    z-index: 998;
    opacity: 0;
    pointer-events: none;
}

.signal-robot svg {
    display: block;
}

/* Bob animation on the SVG while walking */
@keyframes robot-bob {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-2px); }
}

/* Tread rolling — stripes fade in/out in sequence to simulate rolling */
@keyframes tread-stripe {
    0%, 100% { opacity: 0.08; }
    50%       { opacity: 0.55; }
}

/* Head tilt up toward SIGNAL button on arrival */
@keyframes head-tilt {
    0%   { transform: rotate(0deg); }
    40%  { transform: rotate(-18deg); }
    70%  { transform: rotate(-14deg); }
    100% { transform: rotate(-16deg); }
}

.signal-robot.walking .robot-bob {
    animation: robot-bob 0.45s ease-in-out infinite;
}

/* Tread stripes pulse in staggered sequence — animation-delay set inline in SVG */
.signal-robot.walking .robot-tread-anim {
    animation: tread-stripe 0.7s ease-in-out infinite;
}

/* Head tilts on arrival (class added via JS) — pivot at mast top */
.signal-robot.arrived .robot-head {
    transform-origin: 44px 11px;
    animation: head-tilt 0.55s ease-out forwards;
}

/* Button pulse when robot arrives */
@keyframes signal-btn-arrive {
    0%   { box-shadow: 0 4px 24px rgba(0,180,216,0.15); }
    40%  { box-shadow: 0 0 0 6px rgba(0,180,216,0.2), 0 4px 32px rgba(0,180,216,0.4); }
    100% { box-shadow: 0 4px 24px rgba(0,180,216,0.15); }
}

.signal-float-btn.robot-arrived {
    animation: signal-btn-arrive 0.7s ease-out forwards;
}

/* Hide robot on mobile — too cluttered */
@media (max-width: 768px) {
    .signal-robot { display: none; }
}

/* ── Welcome screen ── */
.signal-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.4rem 1.2rem 1.2rem;
    gap: 0;
    text-align: center;
    overflow-y: auto;
}

.signal-welcome-robot {
    margin-bottom: 0.9rem;
    opacity: 0.92;
    line-height: 0;
}

.signal-welcome-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.65rem;
    width: 100%;
}

.signal-welcome-intro {
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.5;
    margin: 0;
}

.signal-welcome-intro strong {
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.04em;
}

.signal-welcome-quote {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-style: italic;
    border-left: 2px solid var(--accent);
    text-align: left;
    padding: 0.4rem 0.7rem;
    margin: 0.1rem 0;
    border-radius: 0 4px 4px 0;
    background: rgba(0,180,216,0.04);
    line-height: 1.5;
}

.signal-welcome-sub {
    font-size: 0.75rem;
    color: var(--text-muted, var(--text-secondary));
    margin: 0;
    opacity: 0.75;
}

.signal-welcome-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
}

.signal-welcome-chip {
    font-size: 0.72rem;
    padding: 0.35rem 0.7rem;
    border: 1px solid rgba(0,180,216,0.4);
    border-radius: 20px;
    background: rgba(0,180,216,0.06);
    color: var(--accent);
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
    white-space: nowrap;
}

.signal-welcome-chip:hover {
    background: rgba(0,180,216,0.14);
    border-color: var(--accent);
}

.signal-welcome-explore {
    margin-top: 0.2rem;
    font-size: 0.78rem;
    padding: 0.45rem 1.1rem;
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.03em;
    transition: all 0.15s;
}

.signal-welcome-explore:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

/* ── Systems demo narrative section ── */
.signal-demo-section {
    background: var(--bg-secondary);
}

.demo-philosophy {
    margin: 2rem 0 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 800px;
}

.demo-quote {
    font-size: 1.15rem;
    font-style: italic;
    color: var(--text-primary);
    border-left: 3px solid var(--accent);
    padding: 0.6rem 1.2rem;
    margin: 0;
    background: rgba(0,180,216,0.04);
    border-radius: 0 6px 6px 0;
    line-height: 1.55;
}

.demo-quote-context {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin: 0;
    padding-left: 0.2rem;
}

/* Case cards */
.demo-cases {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
    .demo-cases { grid-template-columns: 1fr; }
}

.demo-case {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.2s;
}

.demo-case:hover {
    border-color: rgba(0,180,216,0.4);
}

.demo-case-visual {
    background: #0d1117;
    padding: 0.25rem 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    line-height: 0;
}

.demo-case-body {
    padding: 1.1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.demo-case-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.05em;
    opacity: 0.75;
}

.demo-case-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.demo-case-text {
    font-size: 0.81rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin: 0;
}

.demo-case-outcome {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    padding: 0.28rem 0.65rem;
    border-radius: 4px;
    align-self: flex-start;
    margin-top: 0.2rem;
}

.demo-case-outcome--found {
    background: rgba(34,197,94,0.1);
    color: #22c55e;
    border: 1px solid rgba(34,197,94,0.25);
}

/* Auto-playing visualizer */
.demo-visualizer {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.demo-viz-header {
    padding: 1.1rem 1.4rem 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.demo-viz-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 0.2rem;
    color: var(--text-primary);
}

.demo-viz-sub {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin: 0;
}

.demo-stage-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.7rem 1.4rem;
    background: rgba(0,180,216,0.03);
    border-bottom: 1px solid var(--border-color);
}

.demo-stage-dots {
    display: flex;
    gap: 0.45rem;
    flex-shrink: 0;
}

.demo-stage-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    cursor: pointer;
    transition: all 0.35s;
    border: 1px solid rgba(255,255,255,0.12);
}

.demo-stage-dot.active {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 7px rgba(0,180,216,0.45);
}

.demo-stage-dot:hover:not(.active) {
    border-color: var(--accent);
    background: rgba(0,180,216,0.2);
}

.demo-stage-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.77rem;
    color: var(--accent);
    font-weight: 500;
    transition: opacity 0.2s;
}

.demo-stage-narration {
    padding: 0.85rem 1.4rem;
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.7;
    border-bottom: 1px solid var(--border-color);
    min-height: 3.8rem;
    transition: opacity 0.2s;
}

.demo-stage-narration.updating {
    opacity: 0.25;
}

.demo-stage-narration.loading {
    opacity: 0.5;
    font-style: italic;
}

.demo-metrics-row {
    display: flex;
    padding: 0.75rem 1.4rem;
    gap: 2rem;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.demo-metric {
    display: flex;
    flex-direction: column;
    gap: 0.18rem;
}

.demo-metric-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--accent);
    transition: color 0.3s;
}

.demo-metric-value.warn   { color: #f59e0b; }
.demo-metric-value.danger { color: #ef4444; }

.demo-metric-label {
    font-size: 0.68rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    opacity: 0.65;
}

.demo-topology-wrap {
    background: #0d1117;
    line-height: 0;
}

.demo-chart-wrap {
    background: #0d1117;
    border-top: 1px solid #1e293b;
    line-height: 0;
}

.demo-ask-signal {
    padding: 0.9rem 1.4rem 1.1rem;
    border-top: 1px solid var(--border-color);
}

.demo-ask-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    opacity: 0.55;
    display: block;
    margin-bottom: 0.5rem;
}

.demo-ask-row {
    display: flex;
    gap: 0.5rem;
}

.demo-ask-input {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.48rem 0.85rem;
    font-size: 0.82rem;
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.15s;
}

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

.demo-ask-input::placeholder { opacity: 0.45; }

.demo-ask-btn {
    padding: 0.48rem 1rem;
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    white-space: nowrap;
    transition: opacity 0.15s;
}

.demo-ask-btn:hover { opacity: 0.85; }

.demo-ask-response {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-top: 0.6rem;
    min-height: 0;
    transition: all 0.2s;
}

.demo-ask-response:empty { display: none; }

/* ── Floating widget ── */
.signal-float {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
}

.signal-float-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.1rem 0.65rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: 50px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 24px rgba(0,180,216,0.15);
    transition: all 0.2s;
    letter-spacing: 0.05em;
}

.signal-float-btn:hover {
    background: rgba(0,180,216,0.1);
    box-shadow: 0 4px 32px rgba(0,180,216,0.25);
    transform: translateY(-1px);
}

.signal-float-icon {
    display: flex;
    align-items: center;
    color: var(--accent);
}

.signal-float-label {
    color: var(--accent);
}

.signal-float-dot {
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    margin-left: 2px;
    animation: signal-pulse-dot 2s ease-in-out infinite;
}

@keyframes signal-pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.7); }
}

/* Panel */
.signal-float-panel {
    width: 380px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0,0,0,0.5);
    display: none;
    flex-direction: column;
    max-height: 560px;
}

.signal-float-panel.open {
    display: flex;
}

.signal-float-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary, #0d1117);
    flex-shrink: 0;
}

.signal-float-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
}

.signal-float-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.signal-float-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    transition: color 0.2s;
    line-height: 1;
}

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

/* Mode selector — compact icon-only version for float header */
.signal-float-header .signal-modes {
    display: flex;
    gap: 0.25rem;
    margin: 0;
    flex-wrap: nowrap;
}

.signal-float-header .signal-mode-btn {
    padding: 0.3rem 0.5rem;
    font-size: 0.9rem;
    border-radius: 6px;
    border-color: transparent;
    gap: 0;
}

.signal-float-header .signal-mode-btn .mode-icon {
    display: none;
}

/* Teaser card for Systems Explainer */
.signal-explainer-teaser {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    flex: 1;
}

.signal-explainer-teaser.hidden {
    display: none;
}

.signal-teaser-content {
    text-align: center;
}

.signal-teaser-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.signal-teaser-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.signal-teaser-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.signal-teaser-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1.25rem;
    background: rgba(0,180,216,0.08);
    border: 1px solid var(--accent);
    border-radius: 8px;
    color: var(--accent);
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
    text-decoration: none;
    transition: background 0.2s;
}

.signal-teaser-btn:hover {
    background: rgba(0,180,216,0.16);
}

/* Mode selector — full version (used outside float) */
.signal-modes {
    display: flex;
    gap: 0.75rem;
    margin: 2rem 0 1.5rem;
    flex-wrap: wrap;
}

.signal-mode-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.signal-mode-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.signal-mode-btn.active {
    background: rgba(0, 180, 216, 0.08);
    border-color: var(--accent);
    color: var(--accent);
}

.signal-mode-btn .mode-icon {
    font-size: 1rem;
}

/* Panel wrapper */
.signal-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.signal-panel.hidden {
    display: none;
}

/* ── Chat Interface (Career Guide + Discovery Guide) ── */
.signal-chat {
    display: flex;
    flex-direction: column;
    height: 520px;
}

.signal-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1.25rem 1.5rem 0;
}

.signal-suggestion-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 0.35rem 0.9rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s;
    white-space: nowrap;
}

.signal-suggestion-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.signal-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.signal-message {
    max-width: 80%;
    line-height: 1.6;
    font-size: 0.9rem;
}

.signal-message.user {
    align-self: flex-end;
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 12px 12px 2px 12px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
}

.signal-message.assistant {
    align-self: flex-start;
    color: var(--text-secondary);
    padding: 0 0.25rem;
}

.signal-message.assistant::before {
    content: '// SIGNAL';
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    margin-bottom: 0.4rem;
    opacity: 0.7;
}

.signal-message.assistant.loading::after {
    content: '▋';
    animation: signal-blink 0.8s step-end infinite;
    color: var(--accent);
}

@keyframes signal-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Site link chips inside assistant messages */
.signal-site-link {
    display: inline-block;
    margin-top: 0.5rem;
    margin-right: 0.4rem;
    padding: 0.2rem 0.6rem;
    background: rgba(0,180,216,0.08);
    border: 1px solid rgba(0,180,216,0.25);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--accent);
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    transition: background 0.2s;
}

.signal-site-link:hover {
    background: rgba(0,180,216,0.16);
}

.signal-input-row {
    display: flex;
    gap: 0;
    border-top: 1px solid var(--border);
}

.signal-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 1rem 1.25rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    color: var(--text-primary);
    outline: none;
    resize: none;
}

.signal-input::placeholder {
    color: var(--text-muted, #4a5568);
}

.signal-send-btn {
    background: transparent;
    border: none;
    border-left: 1px solid var(--border);
    padding: 1rem 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    transition: color 0.2s;
    white-space: nowrap;
}

.signal-send-btn:hover {
    color: var(--accent);
}

.signal-send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ── Systems Explainer Panel ── */
.signal-explainer {
    padding: 1.5rem;
}

.signal-explainer-intro {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

/* Sliders */
.signal-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 2rem;
    margin-bottom: 1.5rem;
}

.signal-control-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.signal-control-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.signal-control-value {
    color: var(--accent);
    font-weight: 600;
}

.signal-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    outline: none;
    cursor: pointer;
}

.signal-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

.signal-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    cursor: pointer;
}

/* Metrics bar */
.signal-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary, #0d1117);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.signal-metric {
    text-align: center;
}

.signal-metric-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    transition: color 0.4s;
}

.signal-metric-value.warn {
    color: #f59e0b;
}

.signal-metric-value.danger {
    color: #ef4444;
}

.signal-metric-label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
    line-height: 1.3;
}

/* Canvas chart */
.signal-chart-wrap {
    margin-bottom: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

#signal-timing-chart {
    display: block;
    width: 100%;
    background: var(--bg-secondary, #0d1117);
}

/* Topology SVG */
.signal-topology-wrap {
    margin-bottom: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

#signal-topology {
    width: 100%;
    background: var(--bg-secondary, #0d1117);
}

/* AI narration box */
.signal-narration {
    border-left: 2px solid var(--accent);
    padding: 1rem 1.25rem;
    background: rgba(0, 180, 216, 0.04);
    border-radius: 0 8px 8px 0;
    margin-bottom: 1.25rem;
    min-height: 60px;
}

.signal-narration-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.signal-narration-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

.signal-narration-text.loading {
    color: var(--text-muted, #4a5568);
}

.signal-narration-text.loading::after {
    content: ' ▋';
    animation: signal-blink 0.8s step-end infinite;
    color: var(--accent);
}

/* Ask box in explainer */
.signal-explainer-ask {
    display: flex;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.signal-explainer-ask input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.75rem 1rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    color: var(--text-primary);
    outline: none;
}

.signal-explainer-ask input::placeholder {
    color: var(--text-muted, #4a5568);
}

.signal-explainer-ask button {
    background: transparent;
    border: none;
    border-left: 1px solid var(--border);
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.signal-explainer-ask button:hover {
    color: var(--accent);
}

/* Scheduling mode badge */
.signal-mode-badge {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    background: rgba(0,180,216,0.1);
    color: var(--accent);
    border: 1px solid rgba(0,180,216,0.3);
    transition: all 0.4s;
}

.signal-mode-badge.dynamic {
    background: rgba(245,158,11,0.1);
    color: #f59e0b;
    border-color: rgba(245,158,11,0.3);
}

.signal-mode-badge.overloaded {
    background: rgba(239,68,68,0.1);
    color: #ef4444;
    border-color: rgba(239,68,68,0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .signal-modes {
        gap: 0.5rem;
    }

    .signal-mode-btn {
        padding: 0.5rem 0.9rem;
        font-size: 0.8rem;
    }

    .signal-chat {
        height: 460px;
    }

    .signal-message {
        max-width: 92%;
    }

    .signal-controls {
        grid-template-columns: 1fr;
    }

    .signal-metrics {
        grid-template-columns: 1fr 1fr;
    }

    .signal-metrics .signal-metric:last-child {
        grid-column: 1 / -1;
    }
}