/* ═══════════════════════════════════════════════════════════════
   Nexus — Multi-Agent Support UI
   Bright, vibrant, aesthetically stunning
   ═══════════════════════════════════════════════════════════════ */

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fade-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pulse-slow { 0%, 100% { opacity: 0.4; transform: scale(1); } 50% { opacity: 0.7; transform: scale(1.05); } }
@keyframes pulse-dot { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.4); opacity: 0.6; } }
@keyframes slide-in { from { opacity: 0; transform: translateX(12px); } to { opacity: 1; transform: translateX(0); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes glow-pulse { 0%, 100% { opacity: 0.15; } 50% { opacity: 0.3; } }
@keyframes ring-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.animate-fade-up { animation: fade-up 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-fade-in { animation: fade-in 0.3s ease forwards; }
.animate-pulse-slow { animation: pulse-slow 6s ease-in-out infinite; }
.animate-pulse-dot { animation: pulse-dot 1.2s ease-in-out infinite; }
.animate-slide-in { animation: slide-in 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* ── Ambient Glow ────────────────────────────────────────────── */
.glow {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    filter: blur(120px);
    animation: glow-pulse 8s ease-in-out infinite;
}
.glow-1 {
    top: -20%;
    left: -15%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.12), transparent 70%);
}
.glow-2 {
    bottom: -15%;
    right: -10%;
    width: 45%;
    height: 45%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1), transparent 70%);
    animation-delay: 3s;
}
.glow-3 {
    top: 40%;
    right: -20%;
    width: 35%;
    height: 35%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08), transparent 70%);
    animation-delay: 5s;
}

/* ── Header ──────────────────────────────────────────────────── */
.header-bar {
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    background: rgba(255, 255, 255, 0.72);
    border-bottom: 1px solid rgba(228, 228, 231, 0.6);
}
.dark .header-bar {
    background: rgba(9, 9, 11, 0.75);
    border-color: rgba(39, 39, 42, 0.6);
}

.logo-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, #10b981, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3), 0 0 0 1px rgba(16, 185, 129, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}
.logo-mark:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4), 0 0 0 1px rgba(16, 185, 129, 0.2);
}

/* ── Tabs ────────────────────────────────────────────────────── */
.tab-group {
    display: flex;
    gap: 2px;
    background: rgba(0, 0, 0, 0.04);
    padding: 3px;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.06);
}
.dark .tab-group {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.06);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    border-radius: 9px;
    font-size: 12px;
    font-weight: 600;
    color: #71717a;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    background: transparent;
}
.dark .tab-btn { color: #a1a1aa; }
.tab-btn:hover { color: #10b981; }
.tab-btn.tab-active {
    background: white;
    color: #10b981;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(16, 185, 129, 0.1);
}
.dark .tab-btn.tab-active {
    background: rgba(16, 185, 129, 0.12);
    color: #34d399;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(16, 185, 129, 0.15);
}

.tab-btn-mobile {
    padding: 8px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    color: #71717a;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    background: transparent;
}
.dark .tab-btn-mobile { color: #a1a1aa; }
.tab-btn-mobile.tab-active {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}
.dark .tab-btn-mobile.tab-active {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

/* ── Icon Button ─────────────────────────────────────────────── */
.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #71717a;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}
.icon-btn:hover {
    background: rgba(16, 185, 129, 0.08);
    color: #10b981;
}
.dark .icon-btn { color: #a1a1aa; }
.dark .icon-btn:hover {
    background: rgba(16, 185, 129, 0.12);
    color: #34d399;
}

/* ── Agent Badge ─────────────────────────────────────────────── */
.agent-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.agent-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    transition: all 0.3s;
}
.agent-badge-idle { background: rgba(161, 161, 170, 0.1); color: #a1a1aa; }
.agent-badge-idle .agent-dot { background: #a1a1aa; }
.agent-badge-billing { background: rgba(59, 130, 246, 0.1); color: #3b82f6; border: 1px solid rgba(59, 130, 246, 0.2); }
.agent-badge-billing .agent-dot { background: #3b82f6; }
.agent-badge-returns { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; border: 1px solid rgba(139, 92, 246, 0.2); }
.agent-badge-returns .agent-dot { background: #8b5cf6; }
.agent-badge-escalation { background: rgba(244, 63, 94, 0.1); color: #f43f5e; border: 1px solid rgba(244, 63, 94, 0.2); }
.agent-badge-escalation .agent-dot { background: #f43f5e; }
.agent-badge-router { background: rgba(16, 185, 129, 0.1); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.2); }
.agent-badge-router .agent-dot { background: #10b981; }

/* ── Welcome Hero ────────────────────────────────────────────── */
.welcome-hero {
    text-align: center;
    padding: 48px 16px 24px;
    animation: fade-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.welcome-icon-ring {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto;
}
.welcome-icon-ring::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    padding: 2px;
    background: conic-gradient(from 0deg, #10b981, #8b5cf6, #3b82f6, #10b981);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: ring-spin 4s linear infinite;
}
.welcome-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #10b981, #059669);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.3);
    animation: float 3s ease-in-out infinite;
}

/* Protocol pills */
.proto-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 10px;
    font-weight: 600;
}
.proto-pill-mcp { background: rgba(59, 130, 246, 0.08); color: #3b82f6; }
.proto-pill-a2a { background: rgba(139, 92, 246, 0.08); color: #8b5cf6; }
.proto-pill-gemini { background: rgba(16, 185, 129, 0.08); color: #10b981; }
.dark .proto-pill-mcp { background: rgba(59, 130, 246, 0.12); color: #60a5fa; }
.dark .proto-pill-a2a { background: rgba(139, 92, 246, 0.12); color: #a78bfa; }
.dark .proto-pill-gemini { background: rgba(16, 185, 129, 0.12); color: #34d399; }

/* ── Example Chips ───────────────────────────────────────────── */
.example-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    background: transparent;
}
.example-chip-mcp {
    background: rgba(59, 130, 246, 0.06);
    border-color: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}
.example-chip-mcp:hover { background: rgba(59, 130, 246, 0.12); transform: translateY(-1px); }
.example-chip-a2a {
    background: rgba(139, 92, 246, 0.06);
    border-color: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
}
.example-chip-a2a:hover { background: rgba(139, 92, 246, 0.12); transform: translateY(-1px); }
.example-chip-danger {
    background: rgba(244, 63, 94, 0.06);
    border-color: rgba(244, 63, 94, 0.15);
    color: #f43f5e;
}
.example-chip-danger:hover { background: rgba(244, 63, 94, 0.12); transform: translateY(-1px); }

.dark .example-chip-mcp { background: rgba(59, 130, 246, 0.08); color: #60a5fa; }
.dark .example-chip-a2a { background: rgba(139, 92, 246, 0.08); color: #a78bfa; }
.dark .example-chip-danger { background: rgba(244, 63, 94, 0.08); color: #fb7185; }

/* ── Chat Input ──────────────────────────────────────────────── */
.chat-input-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 1.5px solid #e4e4e7;
    border-radius: 16px;
    padding: 4px;
    transition: all 0.25s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.chat-input-bar:focus-within {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1), 0 4px 16px rgba(0, 0, 0, 0.06);
}
.dark .chat-input-bar {
    background: rgba(28, 28, 31, 0.8);
    border-color: #27272a;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.dark .chat-input-bar:focus-within {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.08), 0 4px 16px rgba(0, 0, 0, 0.3);
}

.send-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
    flex-shrink: 0;
}
.send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
}
.send-btn:active:not(:disabled) { transform: scale(0.95); }
.send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
}

/* ── Chat Bubbles ────────────────────────────────────────────── */
.bubble-user {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border-radius: 20px 20px 6px 20px;
    padding: 12px 18px;
    max-width: 75%;
    margin-left: auto;
    font-size: 14px;
    line-height: 1.6;
    box-shadow: 0 2px 12px rgba(16, 185, 129, 0.2);
}
.bubble-assistant {
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 20px 20px 20px 6px;
    padding: 14px 18px;
    max-width: 80%;
    font-size: 14px;
    line-height: 1.6;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.dark .bubble-assistant {
    background: #1c1c1f;
    border-color: #27272a;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* Agent tag on assistant bubble */
.agent-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    margin-top: 8px;
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 600;
}
.agent-tag-billing { background: rgba(59, 130, 246, 0.08); color: #3b82f6; }
.agent-tag-returns { background: rgba(139, 92, 246, 0.08); color: #8b5cf6; }
.agent-tag-escalation { background: rgba(244, 63, 94, 0.08); color: #f43f5e; }
.agent-tag-router { background: rgba(16, 185, 129, 0.08); color: #10b981; }

/* Markdown in bubbles */
.bubble-assistant p { margin: 0.5em 0; }
.bubble-assistant p:first-child { margin-top: 0; }
.bubble-assistant p:last-of-type { margin-bottom: 0; }
.bubble-assistant ul, .bubble-assistant ol { margin: 0.5em 0; padding-left: 1.5em; }
.bubble-assistant li { margin: 0.25em 0; }
.bubble-assistant code {
    background: rgba(16, 185, 129, 0.08);
    padding: 2px 6px;
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    color: #059669;
}
.dark .bubble-assistant code {
    background: rgba(16, 185, 129, 0.12);
    color: #34d399;
}
.bubble-assistant strong { font-weight: 700; }
.bubble-assistant pre {
    background: #f4f4f5;
    border-radius: 10px;
    padding: 12px;
    overflow-x: auto;
    margin: 0.5em 0;
    font-size: 0.85em;
}
.dark .bubble-assistant pre { background: rgba(255, 255, 255, 0.04); }

/* ── Activity Sidebar ────────────────────────────────────────── */
.activity-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 16px;
    opacity: 0.6;
}

.activity-item {
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 11px;
    border: 1px solid transparent;
    transition: all 0.2s;
}
.activity-routing {
    background: rgba(16, 185, 129, 0.05);
    border-color: rgba(16, 185, 129, 0.12);
}
.dark .activity-routing {
    background: rgba(16, 185, 129, 0.06);
    border-color: rgba(16, 185, 129, 0.1);
}
.activity-tool {
    background: rgba(59, 130, 246, 0.05);
    border-color: rgba(59, 130, 246, 0.12);
}
.dark .activity-tool {
    background: rgba(59, 130, 246, 0.06);
    border-color: rgba(59, 130, 246, 0.1);
}
.activity-tool-result {
    background: rgba(245, 158, 11, 0.05);
    border-color: rgba(245, 158, 11, 0.12);
}
.dark .activity-tool-result {
    background: rgba(245, 158, 11, 0.06);
    border-color: rgba(245, 158, 11, 0.1);
}

/* ── Architecture (Interactive) ──────────────────────────────── */
.arch-canvas {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 16px;
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 20px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    min-height: 600px;
}
.dark .arch-canvas {
    background: #1c1c1f;
    border-color: #27272a;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.arch-layer {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
}
.arch-layer-spread {
    gap: 24px;
    justify-content: center;
}
.arch-layer-tools {
    gap: 20px;
    justify-content: center;
}

.arch-agent-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

/* Nodes */
.arch-node {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-radius: 14px;
    background: white;
    border: 2px solid #e4e4e7;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}
.dark .arch-node {
    background: #27272a;
    border-color: #3f3f46;
}
.arch-node:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border-color: #10b981;
}
.dark .arch-node:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    border-color: #34d399;
}
.arch-node-selected {
    border-color: #10b981 !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15), 0 4px 16px rgba(16, 185, 129, 0.1) !important;
}
.dark .arch-node-selected {
    border-color: #34d399 !important;
    box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12), 0 4px 16px rgba(52, 211, 153, 0.08) !important;
}
.arch-node-lg { padding: 16px 28px; }

.arch-node-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.arch-node-icon-sm {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.arch-node-label {
    font-size: 13px;
    font-weight: 700;
    color: #09090b;
    display: block;
}
.dark .arch-node-label { color: #fafafa; }
.arch-node-label-sm {
    font-size: 11px;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    color: #52525b;
}
.dark .arch-node-label-sm { color: #a1a1aa; }
.arch-node-sub {
    font-size: 10px;
    color: #a1a1aa;
    display: block;
    margin-top: 1px;
}
.arch-node-tool { padding: 10px 16px; }

/* Protocol badges between layers */
.arch-proto-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 9px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
    letter-spacing: 0.03em;
}
.arch-proto-mcp { background: rgba(59, 130, 246, 0.08); color: #3b82f6; }
.arch-proto-a2a { background: rgba(139, 92, 246, 0.08); color: #8b5cf6; }
.dark .arch-proto-mcp { background: rgba(59, 130, 246, 0.12); color: #60a5fa; }
.dark .arch-proto-a2a { background: rgba(139, 92, 246, 0.12); color: #a78bfa; }

/* Connection lines */
.arch-vline {
    width: 2px;
    background: #d4d4d8;
    margin: 0 auto;
    flex-shrink: 0;
}
.dark .arch-vline { background: #52525b; }
.arch-vline-accent { background: #8b5cf6; }
.dark .arch-vline-accent { background: #a78bfa; }

.arch-hline {
    height: 2px;
    background: #d4d4d8;
    width: 60%;
    max-width: 500px;
    margin: 0 auto;
}
.dark .arch-hline { background: #52525b; }
.arch-hline-short { width: 30%; max-width: 200px; }
.arch-hline-wide { width: 80%; max-width: 600px; }

/* Fan-out structures */
.arch-fanout-3, .arch-fanout-2 {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}
.arch-fanout-drops {
    display: flex;
    justify-content: space-between;
    width: 60%;
    max-width: 500px;
}
.arch-fanout-drops-2 {
    width: 30%;
    max-width: 200px;
}

.arch-converge {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 4px;
}

/* Inspector Panel */
.arch-inspector {
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 24px;
    min-height: 300px;
}
.dark .arch-inspector {
    background: #1c1c1f;
    border-color: #27272a;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.arch-inspector-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
}

.inspector-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}
.inspector-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.inspector-type {
    font-size: 10px;
    font-weight: 600;
    color: #a1a1aa;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.inspector-desc {
    font-size: 12px;
    line-height: 1.6;
    color: #52525b;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e4e4e7;
}
.dark .inspector-desc { color: #a1a1aa; border-color: #27272a; }

.inspector-section {
    margin-bottom: 16px;
}
.inspector-section:last-child { margin-bottom: 0; }
.inspector-section-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #a1a1aa;
    margin-bottom: 8px;
}

.inspector-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 6px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    gap: 8px;
}
.dark .inspector-row { border-color: rgba(255, 255, 255, 0.04); }
.inspector-row:last-child { border-bottom: none; }
.inspector-key {
    font-size: 11px;
    font-weight: 600;
    color: #71717a;
    flex-shrink: 0;
}
.inspector-val {
    font-size: 11px;
    color: #09090b;
    text-align: right;
    font-family: 'JetBrains Mono', monospace;
    word-break: break-word;
}
.dark .inspector-val { color: #e4e4e7; }

.inspector-conn {
    display: inline-flex;
    align-items: center;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 6px;
    background: rgba(16, 185, 129, 0.08);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.12);
}

/* Legend */
.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.04);
    font-size: 12px;
    font-weight: 500;
    color: #71717a;
}
.dark .legend-item {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.04);
    color: #a1a1aa;
}

/* Protocol cards */
.proto-card {
    display: flex;
    gap: 14px;
    padding: 18px;
    border-radius: 16px;
    border: 1px solid transparent;
    transition: all 0.2s;
}
.proto-card:hover { transform: translateY(-2px); }
.proto-card-mcp { background: rgba(59, 130, 246, 0.04); border-color: rgba(59, 130, 246, 0.1); }
.proto-card-a2a { background: rgba(139, 92, 246, 0.04); border-color: rgba(139, 92, 246, 0.1); }
.proto-card-gemini { background: rgba(16, 185, 129, 0.04); border-color: rgba(16, 185, 129, 0.1); }
.dark .proto-card-mcp { background: rgba(59, 130, 246, 0.06); border-color: rgba(59, 130, 246, 0.08); }
.dark .proto-card-a2a { background: rgba(139, 92, 246, 0.06); border-color: rgba(139, 92, 246, 0.08); }
.dark .proto-card-gemini { background: rgba(16, 185, 129, 0.06); border-color: rgba(16, 185, 129, 0.08); }

.proto-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ── Results ─────────────────────────────────────────────────── */
.results-hero {
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.dark .results-hero {
    background: #1c1c1f;
    border-color: #27272a;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.autoplay-btn-main {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}
.autoplay-btn-main:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(16, 185, 129, 0.4);
}
.autoplay-btn-main:active:not(:disabled) { transform: translateY(0); }
.autoplay-btn-main:disabled { opacity: 0.5; cursor: not-allowed; }

.progress-track {
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 100px;
    overflow: hidden;
}
.dark .progress-track { background: rgba(255, 255, 255, 0.06); }
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981, #8b5cf6);
    border-radius: 100px;
    transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Phase dots (labeled) */
.phase-dot-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px 4px 6px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.dark .phase-dot-item { background: rgba(255, 255, 255, 0.04); border-color: rgba(255, 255, 255, 0.06); }
.phase-dot-circle {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #a1a1aa;
    transition: all 0.3s;
}
.phase-dot-label {
    font-size: 11px;
    font-weight: 600;
    color: #71717a;
    transition: color 0.3s;
}
.dark .phase-dot-label { color: #a1a1aa; }
.phase-dot-active .phase-dot-circle { background: #10b981; animation: pulse-dot 1.2s ease-in-out infinite; box-shadow: 0 0 8px rgba(16, 185, 129, 0.4); }
.phase-dot-active .phase-dot-label { color: #10b981; }
.dark .phase-dot-active .phase-dot-label { color: #34d399; }
.phase-dot-pass .phase-dot-circle { background: #10b981; box-shadow: 0 0 8px rgba(16, 185, 129, 0.3); }
.phase-dot-pass .phase-dot-label { color: #10b981; }
.dark .phase-dot-pass .phase-dot-label { color: #34d399; }
.phase-dot-fail .phase-dot-circle { background: #f43f5e; box-shadow: 0 0 8px rgba(244, 63, 94, 0.3); }
.phase-dot-fail .phase-dot-label { color: #f43f5e; }
.dark .phase-dot-fail .phase-dot-label { color: #fb7185; }

/* Live log panel */
.log-panel {
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.dark .log-panel {
    background: #1c1c1f;
    border-color: #27272a;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.log-scroll {
    max-height: 280px;
    overflow-y: auto;
    padding: 8px;
}

.log-entry {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 11px;
    transition: background 0.15s;
}
.log-entry:hover { background: rgba(0, 0, 0, 0.02); }
.dark .log-entry:hover { background: rgba(255, 255, 255, 0.02); }

.log-ts {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: #a1a1aa;
    flex-shrink: 0;
    width: 56px;
}
.log-scenario-tag {
    font-size: 9px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 4px;
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.log-scenario-mcp { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.log-scenario-accent { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.log-scenario-danger { background: rgba(244, 63, 94, 0.1); color: #f43f5e; }
.log-scenario-primary { background: rgba(16, 185, 129, 0.1); color: #10b981; }

.log-icon { flex-shrink: 0; }
.log-label {
    font-weight: 600;
    color: #09090b;
    flex-shrink: 0;
}
.dark .log-label { color: #fafafa; }
.log-detail {
    color: #71717a;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}
.dark .log-detail { color: #a1a1aa; }

.log-separator {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 10px 4px;
}
.log-separator-line {
    flex: 1;
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
}
.dark .log-separator-line { background: rgba(255, 255, 255, 0.06); }
.log-separator-text {
    font-size: 10px;
    font-weight: 700;
    color: #a1a1aa;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

/* Summary stats */
.summary-stat {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px;
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 16px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.dark .summary-stat {
    background: #1c1c1f;
    border-color: #27272a;
}
.summary-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Scenario detail cards (expandable) */
.scenario-detail-card {
    background: white;
    border: 1px solid #e4e4e7;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.2s;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.dark .scenario-detail-card {
    background: #1c1c1f;
    border-color: #27272a;
}
.scenario-detail-pass { border-left: 3px solid #10b981; }
.scenario-detail-fail { border-left: 3px solid #f43f5e; }

.scenario-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    cursor: pointer;
    transition: background 0.15s;
}
.scenario-detail-header:hover { background: rgba(0, 0, 0, 0.01); }
.dark .scenario-detail-header:hover { background: rgba(255, 255, 255, 0.01); }

.scenario-icon-box {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.proto-pill-tiny {
    font-size: 9px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 4px;
    letter-spacing: 0.04em;
}
.proto-pill-tiny-mcp { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.proto-pill-tiny-accent { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.proto-pill-tiny-danger { background: rgba(244, 63, 94, 0.1); color: #f43f5e; }

.scenario-result-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 8px;
    letter-spacing: 0.04em;
}
.scenario-result-pass { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.scenario-result-fail { background: rgba(244, 63, 94, 0.1); color: #f43f5e; }

.scenario-chevron {
    transition: transform 0.2s;
}

.scenario-detail-body {
    border-top: 1px solid #e4e4e7;
    padding: 16px 20px;
}
.dark .scenario-detail-body { border-color: #27272a; }

.scenario-section {
    margin-bottom: 14px;
}
.scenario-section:last-child { margin-bottom: 0; }

.scenario-section-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #a1a1aa;
    margin-bottom: 6px;
}

.scenario-user-msg {
    font-size: 13px;
    line-height: 1.5;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    color: #3f3f46;
}
.dark .scenario-user-msg {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.04);
    color: #d4d4d8;
}

.routing-tag {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
}
.routing-expected {
    background: rgba(161, 161, 170, 0.1);
    color: #71717a;
}
.routing-actual-pass {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}
.routing-actual-fail {
    background: rgba(244, 63, 94, 0.1);
    color: #f43f5e;
}

.result-tool-badge {
    display: inline-flex;
    align-items: center;
    font-size: 10px;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    padding: 2px 8px;
    border-radius: 6px;
    background: rgba(59, 130, 246, 0.08);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.12);
}
.dark .result-tool-badge {
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
    border-color: rgba(59, 130, 246, 0.15);
}

.scenario-response {
    font-size: 13px;
    line-height: 1.6;
    padding: 12px 14px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    max-height: 200px;
    overflow-y: auto;
}
.dark .scenario-response {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.04);
}
.scenario-response p { margin: 0.4em 0; }
.scenario-response p:first-child { margin-top: 0; }
.scenario-response p:last-child { margin-bottom: 0; }
.scenario-response strong { font-weight: 700; }
.scenario-response code {
    background: rgba(16, 185, 129, 0.08);
    padding: 1px 5px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
}
.scenario-response ul, .scenario-response ol { padding-left: 1.5em; margin: 0.4em 0; }

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 12px;
    border: 1px solid #e4e4e7;
    background: white;
    color: #09090b;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.dark .download-btn { background: #1c1c1f; border-color: #27272a; color: #fafafa; }
.download-btn:hover { border-color: #10b981; color: #10b981; }

/* ── Scrollbar ───────────────────────────────────────────────── */
.custom-scrollbar::-webkit-scrollbar { width: 5px; }
.custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
.custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 100px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.2); }
.dark .custom-scrollbar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); }
.dark .custom-scrollbar::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.15); }