/* Demo flow — guided walkthrough styles */

body.demo-body {
    background: #0f172a;
    color: #e2e8f0;
}

/* Progress bar */
.demo-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: #1e293b;
    border-bottom: 1px solid #334155;
    padding: 0.75rem 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.demo-progress-logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: #fbbf24;
    white-space: nowrap;
}

.demo-progress-steps {
    flex: 1;
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.demo-step-dot {
    width: 32px;
    height: 6px;
    border-radius: 3px;
    background: #334155;
    transition: background 0.3s;
    cursor: pointer;
}

.demo-step-dot.active {
    background: #2563eb;
}

.demo-step-dot.completed {
    background: #16a34a;
}

.demo-step-label {
    font-size: 0.8rem;
    color: #94a3b8;
    white-space: nowrap;
    margin-left: 0.5rem;
}

/* Main content */
.demo-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 5rem 2rem 4rem;
    min-height: 100vh;
}

/* Page sections */
.demo-page {
    display: none;
    animation: demoFadeIn 0.4s ease-out;
}

.demo-page.active {
    display: block;
}

@keyframes demoFadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Page header */
.demo-page-number {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.demo-page h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.demo-page .demo-subtitle {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 2rem;
    line-height: 1.6;
    max-width: 640px;
}

/* Feature cards */
.demo-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}

.demo-feature {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 1.25rem;
}

.demo-feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.demo-feature h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #f8fafc;
    margin-bottom: 0.4rem;
}

.demo-feature p {
    font-size: 0.85rem;
    color: #94a3b8;
    line-height: 1.5;
}

/* Interactive area */
.demo-interactive {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.demo-interactive h3 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    margin-bottom: 1rem;
}

/* Call status area */
.demo-call-area {
    text-align: center;
    padding: 1.5rem;
}

.demo-call-status {
    font-size: 1rem;
    color: #94a3b8;
    margin-bottom: 1rem;
}

.demo-call-timer {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: #334155;
    margin-bottom: 1rem;
}

.demo-call-timer.active {
    color: #16a34a;
}

/* Transcript in demo */
.demo-transcript {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 1rem;
    max-height: 250px;
    overflow-y: auto;
    margin-top: 1rem;
    font-size: 0.85rem;
}

.demo-transcript-line {
    padding: 0.3rem 0;
    border-bottom: 1px solid #1e293b;
}

.demo-transcript-line:last-child {
    border-bottom: none;
}

.demo-transcript-speaker {
    font-weight: 600;
    color: #2563eb;
}

.demo-transcript-speaker.betty {
    color: #fbbf24;
}

.demo-transcript-placeholder {
    color: #475569;
    text-align: center;
    padding: 1.5rem;
}

/* Cards display */
.demo-cards-area {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.demo-cards-area .card-item {
    max-width: 380px;
    border-color: #334155;
    background: #0f172a;
}

/* Buttons */
.demo-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    font-family: inherit;
}

.demo-btn:hover { transform: translateY(-1px); }
.demo-btn:active { transform: translateY(0); }
.demo-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.demo-btn-primary {
    background: #2563eb;
    color: white;
}
.demo-btn-primary:hover:not(:disabled) { background: #1d4ed8; }

.demo-btn-warning {
    background: #f59e0b;
    color: white;
}

.demo-btn-danger {
    background: #dc2626;
    color: white;
}

.demo-btn-success {
    background: #16a34a;
    color: white;
}

.demo-btn-outline {
    background: transparent;
    border: 1px solid #334155;
    color: #e2e8f0;
}
.demo-btn-outline:hover:not(:disabled) { background: #1e293b; }

.demo-btn-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Navigation */
.demo-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid #1e293b;
}

.demo-nav-hint {
    font-size: 0.8rem;
    color: #475569;
}

/* Intro page */
.demo-hero {
    text-align: center;
    padding: 3rem 0;
}

.demo-hero h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.demo-hero .demo-subtitle {
    margin: 0 auto 2rem;
    text-align: center;
}

.demo-hero-tagline {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 3rem;
}

/* Architecture diagram placeholder */
.demo-arch-section {
    margin: 1.5rem 0;
}

.demo-arch-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #f8fafc;
    margin-bottom: 0.75rem;
}

.demo-arch-flow {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 1rem;
    background: #0f172a;
    border-radius: 8px;
    border: 1px solid #334155;
    font-size: 0.85rem;
}

.demo-arch-node {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    color: #e2e8f0;
    white-space: nowrap;
}

.demo-arch-node.highlight {
    border-color: #2563eb;
    color: #60a5fa;
}

.demo-arch-arrow {
    color: #475569;
    font-size: 1rem;
}

/* Status indicator */
.demo-status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 500;
}

.demo-status-idle { background: #1e293b; color: #94a3b8; }
.demo-status-ringing { background: #422006; color: #fbbf24; }
.demo-status-connected { background: #052e16; color: #4ade80; }
.demo-status-ended { background: #1e293b; color: #94a3b8; }

/* Info callout */
.demo-callout {
    background: #172554;
    border: 1px solid #1e3a5f;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
    font-size: 0.9rem;
    color: #93c5fd;
    line-height: 1.5;
}

.demo-callout strong {
    color: #bfdbfe;
}

/* Spinner */
.demo-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #334155;
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: card-spin 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
}

/* Video preview */
.demo-video-section {
    max-width: 560px;
}

/* Frames strip */
.demo-frames-strip {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding: 0.5rem 0;
    scrollbar-width: thin;
    scrollbar-color: #334155 transparent;
}

.demo-frames-strip::-webkit-scrollbar {
    height: 6px;
}

.demo-frames-strip::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 3px;
}

.demo-frame-item {
    flex: 0 0 auto;
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid #334155;
    transition: border-color 0.2s, transform 0.15s;
}

.demo-frame-item:hover {
    border-color: #2563eb;
    transform: scale(1.03);
}

.demo-frame-item img {
    display: block;
    height: 100px;
    width: auto;
}

.demo-frame-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: #94a3b8;
    font-size: 0.65rem;
    text-align: center;
    padding: 0.15rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.demo-frames-loading {
    display: flex;
    align-items: center;
    padding: 1rem;
}

/* Responsive */
@media (max-width: 700px) {
    .demo-features { grid-template-columns: 1fr; }
    .demo-hero h1 { font-size: 2rem; }
    .demo-page h1 { font-size: 1.6rem; }
    .demo-container { padding: 4.5rem 1rem 3rem; }
    .demo-arch-flow { flex-direction: column; }
}