/*
Design reminder: each generated app should feel specific to the business type, not like a reused dark shell.
Use adaptable surfaces, expressive hierarchy, generous spacing, and business-aware contrast instead of global dark overlays.
*/

:root {
    --channels-bg: #f6f3ee;
    --channels-surface: rgba(255, 255, 255, 0.9);
    --channels-surface-strong: #ffffff;
    --channels-surface-soft: rgba(15, 23, 42, 0.04);
    --channels-border: rgba(15, 23, 42, 0.08);
    --channels-border-strong: rgba(15, 23, 42, 0.16);
    --channels-text: #101828;
    --channels-text-soft: #5f6c7b;
    --channels-accent: #0d9488;
    --channels-accent-2: #1d4ed8;
    --channels-shadow: 0 24px 60px rgba(15, 23, 42, 0.14);
    --channels-hero-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.95));
    --channels-nav-background: rgba(255, 255, 255, 0.92);
    --channels-radius-xl: 28px;
    --channels-radius-lg: 22px;
    --channels-radius-md: 16px;
}

.channels-ai-shell,
.channels-ai-app-body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.75), transparent 32%),
        radial-gradient(circle at top right, rgba(13, 148, 136, 0.12), transparent 28%),
        linear-gradient(180deg, color-mix(in srgb, var(--channels-bg) 88%, white 12%) 0%, var(--channels-bg) 100%);
    color: var(--channels-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.channels-ai-shell {
    display: flex;
    align-items: stretch;
    justify-content: center;
    padding: 24px 16px 40px;
}

.channels-ai-builder,
.channels-ai-app {
    width: 100%;
    max-width: 480px;
    background: var(--channels-surface-strong);
    border: 1px solid var(--channels-border);
    border-radius: 34px;
    box-shadow: var(--channels-shadow);
    overflow: hidden;
    position: relative;
}

.channels-ai-builder {
    padding: 28px 18px 22px;
}

.channels-ai-builder__intro {
    margin-bottom: 24px;
}

.channels-ai-builder__details {
    border: 1px solid var(--channels-border);
    border-radius: var(--channels-radius-lg);
    background: var(--channels-surface);
    padding: 16px;
}

.channels-ai-builder__details summary {
    cursor: pointer;
    font-weight: 700;
    color: var(--channels-text);
}

.channels-ai-builder__details-content {
    display: grid;
    gap: 16px;
    margin-top: 16px;
}

.channels-ai-grid {
    display: grid;
    gap: 16px;
}

.channels-ai-eyebrow,
.channels-ai-hero-label,
.channels-ai-section-label {
    margin: 0 0 10px;
    color: var(--channels-accent-2);
    font-size: 0.74rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.channels-ai-builder h1,
.channels-ai-topbar h1,
.channels-ai-panel h2,
.channels-ai-hero-card h2 {
    margin: 0;
    font-weight: 750;
    line-height: 1.04;
    letter-spacing: -0.035em;
}

.channels-ai-builder h1 {
    font-size: 2.1rem;
    margin-bottom: 12px;
}

.channels-ai-builder__intro p:last-child,
.channels-ai-hero-card p,
.channels-ai-panel p,
.channels-ai-contact-card p,
.channels-ai-install-help,
.channels-ai-review-card p,
.channels-ai-preline {
    color: var(--channels-text-soft);
    line-height: 1.6;
}

.channels-ai-form {
    display: grid;
    gap: 16px;
}

.channels-ai-field {
    display: grid;
    gap: 8px;
}

.channels-ai-field label {
    font-size: 0.88rem;
    color: var(--channels-text);
    font-weight: 600;
}

.channels-ai-field input,
.channels-ai-field textarea {
    width: 100%;
    border: 1px solid var(--channels-border);
    background: var(--channels-surface);
    color: var(--channels-text);
    border-radius: 16px;
    padding: 14px 15px;
    font: inherit;
    box-sizing: border-box;
    transition: border-color 180ms ease, transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.channels-ai-field input:focus,
.channels-ai-field textarea:focus {
    outline: none;
    border-color: var(--channels-accent);
    background: var(--channels-surface-strong);
    transform: translateY(-1px);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--channels-accent) 14%, transparent);
}

.channels-ai-button {
    border: 0;
    border-radius: 999px;
    min-height: 52px;
    padding: 0 18px;
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    cursor: pointer;
    transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.channels-ai-button:hover,
.channels-ai-button:focus {
    transform: translateY(-1px);
}

.channels-ai-button--primary {
    background: linear-gradient(135deg, var(--channels-accent), color-mix(in srgb, var(--channels-accent) 70%, var(--channels-accent-2) 30%));
    color: #ffffff;
    box-shadow: 0 14px 28px color-mix(in srgb, var(--channels-accent) 28%, transparent);
}

.channels-ai-button--secondary,
.channels-ai-button--ghost {
    background: var(--channels-surface);
    color: var(--channels-text);
    border: 1px solid var(--channels-border);
}

.channels-ai-button--full {
    width: 100%;
}

.channels-ai-status {
    min-height: 20px;
    margin: 0;
    font-size: 0.86rem;
    color: var(--channels-accent-2);
}

.channels-ai-status[data-tone="error"] {
    color: #b42318;
}

.channels-ai-status[data-tone="success"] {
    color: #027a48;
}

.channels-ai-app {
    min-height: 100vh;
    max-width: 480px;
    padding: env(safe-area-inset-top, 0) 0 calc(94px + env(safe-area-inset-bottom, 0));
}

.channels-ai-statusbar-space {
    height: 10px;
}

.channels-ai-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 18px 18px 10px;
}

.channels-ai-brand-cluster {
    display: flex;
    align-items: center;
    gap: 12px;
}

.channels-ai-brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    object-fit: cover;
    background: var(--channels-surface);
    border: 1px solid var(--channels-border);
}

.channels-ai-topbar h1 {
    font-size: 1.4rem;
}

.channels-ai-screen {
    display: none;
    padding: 14px 18px 24px;
    animation: channelsAiFadeUp 220ms ease;
}

.channels-ai-screen--active {
    display: block;
}

.channels-ai-hero-card,
.channels-ai-panel,
.channels-ai-contact-card,
.channels-ai-gallery-card,
.channels-ai-review-card,
.channels-ai-faq-item {
    background: var(--channels-surface);
    border: 1px solid var(--channels-border);
    border-radius: var(--channels-radius-xl);
    padding: 22px 18px;
    backdrop-filter: blur(12px);
}

.channels-ai-hero-card {
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 14px;
    background:
        var(--channels-hero-gradient),
        linear-gradient(180deg, var(--channels-surface-strong), var(--channels-surface));
}

.channels-ai-hero-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.channels-ai-tagline-chip {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--channels-accent) 10%, white 90%);
    border: 1px solid color-mix(in srgb, var(--channels-accent) 18%, transparent);
    color: var(--channels-text);
    font-weight: 600;
    font-size: 0.82rem;
}

.channels-ai-hero-copy h2,
.channels-ai-panel h2 {
    font-size: 1.72rem;
    margin-bottom: 8px;
}

.channels-ai-hero-actions,
.channels-ai-inline-actions,
.channels-ai-social-list,
.channels-ai-promo-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.channels-ai-promo-strip span,
.channels-ai-social-link {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 12px;
    border-radius: 999px;
    text-decoration: none;
    background: var(--channels-surface-soft);
    border: 1px solid var(--channels-border);
    color: var(--channels-text);
    font-size: 0.85rem;
    font-weight: 600;
}

.channels-ai-service-list,
.channels-ai-gallery-grid,
.channels-ai-review-list,
.channels-ai-faq-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 0;
    display: grid;
    gap: 12px;
}

.channels-ai-service-list li {
    padding: 14px 16px;
    border-radius: 18px;
    background: color-mix(in srgb, var(--channels-accent) 7%, white 93%);
    border: 1px solid color-mix(in srgb, var(--channels-accent) 14%, transparent);
    color: var(--channels-text);
    font-weight: 600;
}

.channels-ai-gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.channels-ai-gallery-card {
    min-height: 110px;
    display: flex;
    align-items: end;
    background:
        linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--channels-accent) 9%, transparent) 100%),
        var(--channels-surface-strong);
}

.channels-ai-review-card {
    margin: 0;
}

.channels-ai-review-card cite {
    display: block;
    margin-top: 12px;
    font-style: normal;
    color: var(--channels-text);
    font-weight: 700;
}

.channels-ai-faq-item summary {
    cursor: pointer;
    font-weight: 700;
    color: var(--channels-text);
}

.channels-ai-faq-item p {
    margin-bottom: 0;
}

.channels-ai-video-frame {
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid var(--channels-border);
    background: #000;
}

.channels-ai-video-frame video {
    display: block;
    width: 100%;
    height: auto;
}

.channels-ai-contact-card {
    margin: 14px 0 16px;
}

.channels-ai-contact-card span {
    display: block;
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--channels-accent-2);
    margin-bottom: 8px;
}

.channels-ai-install-help {
    font-size: 0.84rem;
    margin: 6px 0 0;
}

.channels-ai-bottom-nav {
    position: fixed;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    gap: 10px;
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom, 0));
    background: linear-gradient(180deg, color-mix(in srgb, var(--channels-nav-background) 18%, transparent), var(--channels-nav-background) 38%);
    backdrop-filter: blur(18px);
    border-top: 1px solid var(--channels-border);
}

.channels-ai-nav-item {
    min-height: 56px;
    border-radius: 20px;
    border: 1px solid var(--channels-border);
    background: var(--channels-surface);
    color: var(--channels-text-soft);
    font-weight: 600;
    font-size: 0.82rem;
    transition: all 180ms ease;
}

.channels-ai-nav-item.is-active {
    background: color-mix(in srgb, var(--channels-accent) 12%, white 88%);
    color: var(--channels-text);
    border-color: color-mix(in srgb, var(--channels-accent) 28%, transparent);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.channels-ai-surface-mode-dark {
    --channels-surface: rgba(17, 24, 39, 0.84);
    --channels-surface-strong: #111827;
    --channels-surface-soft: rgba(255, 255, 255, 0.08);
    --channels-border: rgba(255, 255, 255, 0.08);
    --channels-border-strong: rgba(255, 255, 255, 0.16);
    --channels-text: #f8fafc;
    --channels-text-soft: #c4cfdb;
    --channels-nav-background: rgba(15, 23, 42, 0.9);
}

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

@media (min-width: 768px) {
    .channels-ai-shell {
        padding-top: 48px;
        padding-bottom: 64px;
    }

    .channels-ai-builder {
        max-width: 560px;
        padding: 34px 24px 28px;
    }

    .channels-ai-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}