/* ==========================================================================
   SUNO PRO — SEO LANDING PAGES 2026 (UI KIT EXTENSION)
   Strictly aligned with tokens.css and uikit.css
   ========================================================================== */

.seo-page-shell {
    width: 100%;
    max-width: var(--container-wide, 1200px);
    margin: 0 auto;
    padding: clamp(16px, 3vw, 32px) 16px clamp(48px, 6vw, 80px);
    box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   1. BREADCRUMBS
   -------------------------------------------------------------------------- */
.seo-breadcrumbs {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--surface-glass-soft);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    margin-bottom: 24px;
    font-size: 0.84rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.seo-breadcrumbs__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.15s ease;
}

.seo-breadcrumbs__link:hover {
    color: var(--color-premium-gold);
}

.seo-breadcrumbs__sep {
    color: var(--color-text-subtle);
    font-size: 0.8rem;
    user-select: none;
}

.seo-breadcrumbs__current {
    color: var(--color-text-base);
    font-weight: 700;
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --------------------------------------------------------------------------
   2. HERO BANNER
   -------------------------------------------------------------------------- */
.seo-hero {
    position: relative;
    padding: clamp(36px, 5vw, 64px) clamp(24px, 5vw, 56px);
    border-radius: var(--radius-3xl, 28px);
    background: linear-gradient(180deg, var(--color-surface-1) 0%, var(--color-surface-0) 100%);
    border: 1px solid var(--border-base);
    box-shadow: var(--shadow-float-lg), inset 0 1px 0 var(--surface-glass-soft);
    margin-bottom: 40px;
    overflow: hidden;
    text-align: center;
}

.seo-hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 70%;
    background: radial-gradient(ellipse at center, color-mix(in oklch, var(--color-brand-purple) 20%, transparent) 0%, color-mix(in oklch, var(--color-premium-gold) 12%, transparent) 40%, transparent 70%);
    pointer-events: none;
}

.seo-hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.seo-hero__eyebrow {
    margin-bottom: 12px;
}

.seo-hero h1 {
    font-family: 'Unbounded', var(--font-sans);
    font-size-adjust: 0.566;
    font-size: clamp(2rem, 4.2vw, 3.4rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.035em;
    background: linear-gradient(135deg, var(--color-text-base) 0%, var(--color-premium-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 14px;
}

.seo-hero__subtitle {
    font-size: clamp(1.05rem, 1.8vw, 1.25rem);
    font-weight: 600;
    color: var(--color-text-base);
    margin: 0 0 12px;
    line-height: 1.4;
}

.seo-hero__intro {
    font-size: 0.98rem;
    line-height: 1.65;
    color: var(--color-text-muted);
    margin: 0 0 28px;
    max-width: 680px;
}

.seo-hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

/* --------------------------------------------------------------------------
   3. SECTIONS & CONTENT CARDS
   -------------------------------------------------------------------------- */
.seo-section {
    margin-bottom: 48px;
}

.seo-section-header {
    margin-bottom: 24px;
}

.seo-section-header--compact {
    margin-bottom: 12px;
}

.seo-section-header .ui-title-h2 {
    font-family: 'Unbounded', var(--font-sans);
    font-size-adjust: 0.566;
    font-size: clamp(1.35rem, 2.5vw, 1.85rem);
    font-weight: 850;
    letter-spacing: -0.025em;
    color: var(--color-text-base);
    margin: 6px 0 0;
}

/* Highlight Quick-Answer Card */
.seo-highlight-card {
    padding: clamp(24px, 4vw, 36px);
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, color-mix(in oklch, var(--color-surface-1) 85%, var(--color-premium-gold) 15%) 0%, var(--color-surface-0) 100%);
    border: 1px solid color-mix(in oklch, var(--color-premium-gold) 35%, transparent);
    box-shadow: 0 12px 36px color-mix(in oklch, var(--color-premium-gold) 8%, transparent), inset 0 1px 0 var(--surface-glass-soft);
}

.seo-highlight-card p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--color-text-base);
    margin: 0;
}

.seo-highlight-card strong {
    color: var(--color-premium-gold);
    font-weight: 800;
}

/* Responsive Grid */
.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: 20px;
}

.seo-grid--3 {
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

/* Feature & Use-case Card */
.seo-card {
    padding: 24px;
    border-radius: var(--radius-xl);
    background: var(--color-surface-1);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-float-sm);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, box-shadow 0.25s ease;
    box-sizing: border-box;
}

.seo-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in oklch, var(--color-premium-gold) 40%, var(--border-subtle));
    box-shadow: var(--shadow-float-md), 0 8px 24px color-mix(in oklch, var(--color-premium-gold) 10%, transparent);
}

.seo-card__icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-lg);
    background: var(--surface-glass-soft);
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-premium-gold);
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.seo-card h3 {
    font-family: 'Unbounded', var(--font-sans);
    font-size-adjust: 0.566;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -0.015em;
    color: var(--color-text-base);
    margin: 0 0 10px;
}

.seo-card p {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin: 0;
}

/* Step Cards */
.seo-step-card {
    position: relative;
    padding: 28px 24px;
}

.seo-step-card__num {
    margin-bottom: 14px;
}

/* Prompt Example Card */
.seo-prompt-card {
    background: var(--color-surface-0);
    border: 1px dashed var(--border-base);
}

.seo-prompt-card .seo-prompt-card__badge {
    margin-bottom: 12px;
    align-self: flex-start;
}

.seo-prompt-card p {
    font-size: 0.92rem;
    font-style: italic;
    color: var(--color-text-base);
    line-height: 1.6;
}

/* Interactive link cards (Related Landings) */
.seo-card--link {
    text-decoration: none;
    cursor: pointer;
}

.seo-card--link h3 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.seo-card--link h3 svg {
    width: 18px;
    height: 18px;
    color: var(--color-text-subtle);
    transition: transform 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.seo-card--link:hover h3 {
    color: var(--color-premium-gold);
}

.seo-card--link:hover h3 svg {
    color: var(--color-premium-gold);
    transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   4. VALUE PROPOSITION & BOTTOM CTA BANNER
   -------------------------------------------------------------------------- */
.seo-value-card {
    padding: clamp(28px, 4.5vw, 44px);
    border-radius: var(--radius-2xl);
    background: linear-gradient(180deg, var(--color-surface-1) 0%, var(--color-surface-0) 100%);
    border: 1px solid var(--border-base);
    box-shadow: var(--shadow-float-md);
    margin-bottom: 48px;
}

.seo-value-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin: 0 0 16px;
}

.seo-value-card p:last-of-type {
    margin-bottom: 28px;
}

.seo-actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.seo-cta-banner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: clamp(32px, 5vw, 56px) 24px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, color-mix(in oklch, var(--color-surface-1) 90%, var(--color-brand-purple) 10%) 0%, var(--color-surface-0) 100%);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-float-lg);
    position: relative;
    overflow: hidden;
    margin-top: 56px;
}

.seo-cta-banner__badge {
    margin-bottom: 14px;
}

.seo-cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, color-mix(in oklch, var(--color-premium-gold) 12%, transparent) 0%, transparent 65%);
    pointer-events: none;
}

.seo-cta-banner h2 {
    font-family: 'Unbounded', var(--font-sans);
    font-size-adjust: 0.566;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 850;
    margin: 0 0 12px;
    color: var(--color-text-base);
}

.seo-cta-banner p {
    color: var(--color-text-muted);
    font-size: 1.02rem;
    max-width: 580px;
    margin: 0 0 28px;
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   5. FAQ ACCORDION LIST
   -------------------------------------------------------------------------- */
.seo-faq-stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
}