/**
 * Landing Page Styles
 * Public-facing landing page with modular sections.
 *
 * Design principles:
 * - Premium visual quality with depth, typography hierarchy, and micro-interactions
 * - All values via design tokens (colors, spacing, radius, shadows, transitions)
 * - CSP compliant: no inline styles needed
 * - Progressive enhancement: animations degrade gracefully
 * - Mobile-first responsive design
 */

/* ===== Landing Layout ===== */
.landing-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.landing-main {
    flex: 1;
}

/* A notice the root route hands the homepage (an unknown referral link):
   one centred line above the sections, never full-bleed. */
.landing-notice {
    max-width: 72rem;
    margin: var(--space-lg) auto 0;
    padding: 0 var(--space-md);
}

/* ===== Landing Header ===== */
.landing-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: light-dark(rgba(249, 250, 251, 0.8), rgba(15, 15, 15, 0.8));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
    padding: 0.75rem 0;
}

.landing-nav {
    width: 100%;
}

.landing-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.landing-nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.25rem;
}

.landing-nav-logo {
    height: 32px;
    width: auto;
}

.landing-nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.landing-nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-sm) 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.landing-nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

.landing-nav-link-active {
    color: var(--color-primary);
}

.landing-nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.landing-nav-secondary {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.landing-nav-menu-extras {
    display: none;
}

.landing-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.landing-nav-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text);
}

.landing-nav-language-select {
    padding: 0.375rem var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 0.875rem;
    cursor: pointer;
    /* Compact picker — opt out of the framework chevron baseline; the
       OS dropdown arrow is the right affordance for this small landing
       nav switcher (no room for a 16px Lucide chevron + 2.25rem padding
       on a 80-px control). */
    appearance: auto;
    background-image: none;
    min-height: auto;
}

.landing-nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
}

/* ===== Section Containers ===== */
.landing-section {
    padding: 5rem 0;
}

.landing-section:nth-child(even) {
    background: var(--color-bg-elevated);
}

.landing-section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.landing-section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.landing-section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 0.75rem;
    letter-spacing: -0.025em;
}

.landing-section-title-sm {
    font-size: 1.25rem;
    font-weight: 600;
}

.landing-section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== Hero Section ===== */
.landing-hero {
    text-align: center;
    padding: 6rem 0 5rem;
}

.landing-hero-headline {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
    color: var(--color-text);
}

.landing-hero-subheadline {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-xl);
    line-height: 1.6;
}

.landing-hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero background image (when provided via CMS) */
.landing-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.landing-section-hero {
    position: relative;
    overflow: hidden;
}

/* Hero with image: split layout */
.landing-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.landing-hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    text-align: left;
}

.landing-hero-split .landing-hero-headline {
    max-width: none;
}

.landing-hero-split .landing-hero-subheadline {
    margin-left: 0;
    margin-right: 0;
}

.landing-hero-split .landing-hero-cta {
    justify-content: flex-start;
}

.landing-hero-image {
    position: relative;
}

.landing-hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border-subtle);
}

/* Social proof bar (placed after hero CTA) */
.landing-hero-proof {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-subtle);
    flex-wrap: wrap;
}

.landing-hero-split .landing-hero-proof {
    justify-content: flex-start;
}

.landing-hero-proof-text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.landing-hero-proof-logos {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.landing-hero-proof-logos img {
    max-height: 28px;
    opacity: 0.5;
    filter: grayscale(100%);
    transition: opacity var(--transition-fast), filter var(--transition-fast);
}

.landing-hero-proof-logos img:hover {
    opacity: 1;
    filter: none;
}

/* ===== Landing Buttons ===== */
.landing-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.landing-btn:active {
    transform: scale(0.98);
}

.landing-btn-primary {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    box-shadow: var(--shadow-sm);
}

.landing-btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.3);
}

.landing-btn-secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.landing-btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-strong);
}

/* Hero-specific CTA: larger buttons */
.landing-hero-cta .btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.landing-hero-cta .btn-lg:hover {
    transform: translateY(-1px);
}

.landing-hero-cta .btn-primary.btn-lg:hover {
    box-shadow: 0 4px 16px rgba(var(--color-primary-rgb), 0.35);
}

/* ===== Features Section ===== */
.landing-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.landing-feature-card {
    padding: var(--space-xl);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.landing-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.landing-feature-icon {
    width: 52px;
    height: 52px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.landing-feature-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.landing-feature-desc,
.landing-feature-description {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Optional image per feature */
.landing-feature-image {
    margin-bottom: var(--space-md);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.landing-feature-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Bento grid: cards with size variants */
.landing-features-bento {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.landing-feature-card-large {
    grid-column: span 2;
    grid-row: span 2;
}

.landing-feature-card-large .landing-feature-title {
    font-size: 1.5rem;
}

.landing-feature-card-wide {
    grid-column: span 2;
}

/* Column count variants (cols-3 is the default via .landing-features-grid) */
.landing-features-cols-2 {
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
}

.landing-features-cols-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.landing-features-cols-4 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* ===== Testimonials Section ===== */
.landing-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.landing-testimonial-card {
    padding: var(--space-xl);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.landing-testimonial-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.landing-testimonial-quote {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.landing-testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.landing-testimonial-avatar,
.landing-testimonial-photo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.landing-testimonial-photo-placeholder {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 600;
}

.landing-testimonial-info {
    display: flex;
    flex-direction: column;
}

.landing-testimonial-name {
    font-weight: 600;
}

.landing-testimonial-role {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.landing-testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: var(--space-md);
    color: var(--color-warning);
}

/* ===== Pricing Section ===== */

/* Toggle: hidden radio inputs control visibility via :checked */
.landing-pricing-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.landing-pricing-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: var(--space-xl);
    background: var(--color-bg-subtle);
    border-radius: var(--radius-md);
    padding: 0.25rem;
    width: fit-content;
    margin-inline: auto;
}

.landing-pricing-toggle-label {
    padding: var(--space-sm) 1.25rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
    user-select: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.landing-pricing-radio:checked + .landing-pricing-toggle-label {
    background: var(--color-bg-elevated);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.landing-pricing-savings {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-success);
    background: var(--color-success-light);
    padding: 0.125rem var(--space-sm);
    border-radius: var(--radius-full);
}

/* Price visibility toggled by radio state */
.landing-pricing-monthly-price,
.landing-pricing-annual-price {
    display: none;
}

#pricing-monthly:checked ~ .landing-pricing-grid .landing-pricing-monthly-price {
    display: inline;
}

#pricing-annual:checked ~ .landing-pricing-grid .landing-pricing-annual-price {
    display: inline;
}

.landing-pricing-toggle + .landing-pricing-grid .landing-pricing-amount:not(.landing-pricing-monthly-price):not(.landing-pricing-annual-price) {
    display: none;
}

.landing-pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    max-width: 1000px;
    margin-inline: auto;
}

.landing-pricing-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    text-align: center;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.landing-pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.landing-pricing-highlight {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md);
    transform: scale(1.02);
}

.landing-pricing-highlight:hover {
    transform: scale(1.02) translateY(-4px);
    box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-xl);
}

.landing-pricing-badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 1rem;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.landing-pricing-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.landing-pricing-price {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.landing-pricing-period {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 400;
}

.landing-pricing-desc {
    color: var(--color-text-secondary);
    margin: 0.75rem 0;
    font-size: 0.875rem;
}

.landing-pricing-credits {
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin: var(--space-sm) 0;
}

.landing-pricing-features {
    list-style: none;
    padding: 0;
    margin: var(--space-lg) 0;
    text-align: left;
    flex-grow: 1;
}

.landing-pricing-feature {
    padding: 0.375rem 0;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.landing-pricing-feature svg {
    flex-shrink: 0;
    color: var(--color-success);
    margin-top: 0.125rem;
}

.landing-pricing-card .btn {
    margin-top: auto;
}

/* ===== Stats Section ===== */
.landing-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-xl);
    text-align: center;
}

.landing-stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.landing-stat-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.landing-stat-value {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.landing-stat-label {
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
    font-size: 0.9375rem;
}

/* ===== FAQ Section ===== */
.landing-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.landing-faq-item {
    border-bottom: 1px solid var(--color-border-subtle);
}

.landing-faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    cursor: pointer;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.landing-faq-question:hover {
    color: var(--color-primary);
}

.landing-faq-question::-webkit-details-marker {
    display: none;
}

.landing-faq-icon {
    transition: transform var(--transition-normal);
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.landing-faq-item[open] .landing-faq-icon {
    transform: rotate(180deg);
}

.landing-faq-answer {
    padding: 0 0 1.25rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===== Team Section ===== */
.landing-team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.landing-team-card {
    text-align: center;
    padding: var(--space-lg);
}

.landing-team-photo {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    object-fit: cover;
    margin-bottom: var(--space-md);
}

.landing-team-photo-placeholder {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 600;
    margin: 0 auto var(--space-md);
}

.landing-team-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.landing-team-role {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.landing-team-bio {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.landing-team-socials {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: var(--space-md);
}

.landing-team-social {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.landing-team-social:hover {
    color: var(--color-primary);
}

/* ===== Logos Section ===== */
.landing-logos-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl) var(--space-2xl);
}

.landing-logo-item {
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.landing-logo-item:hover {
    opacity: 1;
}

.landing-logo-img {
    max-height: 48px;
    max-width: 120px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter var(--transition-fast);
}

.landing-logo-item:hover .landing-logo-img {
    filter: none;
}

/* ===== CTA Section ===== */
.landing-section-cta {
    text-align: center;
    padding: 6rem 0;
}

.landing-cta-headline {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.025em;
}

.landing-cta-description,
.landing-cta-subheadline {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.125rem;
    line-height: 1.6;
}

.landing-cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ===== Content Section ===== */
.landing-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.landing-content-wrapper.landing-content-right {
    direction: rtl;
}

.landing-content-wrapper.landing-content-right > * {
    direction: ltr;
}

.landing-content-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.landing-content-headline {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.landing-content-body {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===== Contact Section ===== */
.landing-contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
}

.landing-contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.landing-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.landing-contact-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.landing-contact-item a {
    color: var(--color-text);
    text-decoration: none;
}

.landing-contact-item a:hover {
    color: var(--color-primary);
}

.landing-contact-form-wrapper {
    background: var(--color-bg-elevated);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-sm);
}

.landing-contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Honeypot hidden field */
.landing-contact-hp {
    position: absolute;
    left: -9999px;
    height: 0;
    width: 0;
    overflow: hidden;
}

.landing-form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.landing-form-group input,
.landing-form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Invalid state — the visual half of the field-error contract
   (docs/UI_FORMS.md §4), repeated here on purpose.

   style.css declares these rules inside @layer components, where :where()
   keeps them at specificity 0-1-0. This file is UNLAYERED, so
   `.landing-form-group input` wins twice over — unlayered beats layered
   whatever the specificity, and 0-1-1 beats 0-1-0 anyway. Without these two
   rules the contact form marks its field for assistive technology and shows
   the message, while the field itself draws the ordinary PRIMARY focus ring:
   the focus handler lands the user on a blue-ringed input with a red message
   under it. */
.landing-form-group input[aria-invalid="true"],
.landing-form-group textarea[aria-invalid="true"] {
    border-color: var(--color-danger-border);
}

.landing-form-group input[aria-invalid="true"]:focus,
.landing-form-group textarea[aria-invalid="true"]:focus {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px var(--color-danger-subtle);
}

.landing-form-group input:focus,
.landing-form-group textarea:focus {
    outline: 2px solid transparent;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

/* Form wrapper when displayed alone (no contact info) */
.landing-contact-form-wrapper:only-child {
    grid-column: 1 / -1;
    max-width: 600px;
    margin: 0 auto;
}

/* Contact form submission messages */
.landing-contact-message {
    padding: var(--space-md) 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-weight: 500;
    text-align: center;
    animation: landing-message-fade-in 0.3s ease-out;
}

@keyframes landing-message-fade-in {
    from {
        opacity: 0;
        transform: translateY(-0.5rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.landing-contact-message-success {
    background-color: var(--color-success-light);
    color: var(--color-success-dark);
    border: 1px solid var(--color-success);
}

.landing-contact-message-error {
    background-color: var(--color-danger-light);
    color: var(--color-danger-dark);
    border: 1px solid var(--color-danger);
}

.landing-contact-message-expired {
    background-color: var(--color-warning-light);
    color: var(--color-warning-dark);
    border: 1px solid var(--color-warning);
}

/* ===== Footer ===== */
.landing-footer {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border-subtle);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.landing-footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.landing-footer-columns {
    display: flex;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.landing-footer-col-title {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.landing-footer-col-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.landing-footer-col-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.landing-footer-col-links a:hover {
    color: var(--color-primary);
}

.landing-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-subtle);
    gap: var(--space-md);
    flex-wrap: wrap;
}

.landing-footer-bottom-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.landing-footer-logo {
    height: 24px;
    width: auto;
}

.landing-footer-copyright {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.landing-footer-social {
    display: flex;
    gap: 0.75rem;
    margin-top: var(--space-sm);
}

.landing-footer-social-link {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.landing-footer-social-link:hover {
    color: var(--color-primary);
}

.landing-footer-legal {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.landing-footer-legal a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.8125rem;
    transition: color var(--transition-fast);
}

.landing-footer-legal a:hover {
    color: var(--color-text);
}

/* ===== Fallback for browsers without light-dark() ===== */
@supports not (color: light-dark(#000, #fff)) {
    .landing-header {
        background: rgba(249, 250, 251, 0.8);
    }

    [data-theme="dark"] .landing-header {
        background: rgba(15, 15, 15, 0.8);
    }
}

/* ===== Scroll Entrance Animations ===== */
[data-animate] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children animations */
[data-animate-stagger] > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

[data-animate-stagger].is-visible > * {
    opacity: 1;
    transform: translateY(0);
}

[data-animate-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-animate-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-animate-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-animate-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-animate-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-animate-stagger].is-visible > *:nth-child(6) { transition-delay: 400ms; }

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    [data-animate],
    [data-animate-stagger] > * {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    /* --- Layout --- */
    .landing-hero {
        padding: 4rem 0 3rem;
    }

    .landing-hero-split {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .landing-hero-split .landing-hero-cta {
        justify-content: center;
    }

    .landing-hero-split .landing-hero-proof {
        justify-content: center;
    }

    .landing-section {
        padding: 3.5rem 0;
    }

    .landing-section-cta {
        padding: 4rem 0;
    }

    .landing-content-wrapper,
    .landing-contact-wrapper {
        grid-template-columns: 1fr;
    }

    .landing-content-wrapper.landing-content-right {
        direction: ltr;
    }

    .landing-features-bento {
        grid-template-columns: 1fr;
    }

    .landing-feature-card-large,
    .landing-feature-card-wide {
        grid-column: span 1;
        grid-row: span 1;
    }

    .landing-pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .landing-pricing-highlight {
        transform: none;
    }

    .landing-pricing-highlight:hover {
        transform: translateY(-4px);
    }

    /* --- Mobile Navigation --- */

    /* Hamburger button: clean, no border, large touch target */
    .landing-nav-toggle {
        display: flex;
        border: none;
        outline: none;
        background: none;
        -webkit-appearance: none;
        appearance: none;
        border-radius: var(--radius-md);
    }

    .landing-nav-toggle:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

    /* Backdrop overlay when menu is open */
    .landing-nav-open::after {
        content: '';
        position: fixed;
        inset: 0;
        background: rgb(0 0 0 / 0.3);
        z-index: calc(var(--z-sticky) - 1);
        animation: landing-fade-in 0.2s ease-out;
    }

    @keyframes landing-fade-in {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* Menu panel: slide-down with solid background */
    .landing-nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-elevated);
        border-bottom: 1px solid var(--color-border-subtle);
        box-shadow: var(--shadow-lg);
        padding: var(--space-sm) 0;
        z-index: var(--z-sticky);
        /* Hidden by default with slide animation */
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
        pointer-events: none;
    }

    .landing-nav-links.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    /* Navigation links: large touch targets, full width */
    .landing-nav-link {
        width: 100%;
        padding: 0.875rem var(--space-lg);
        font-size: 1rem;
        font-weight: 500;
        min-height: var(--touch-target);
        display: flex;
        align-items: center;
        border-radius: 0;
    }

    .landing-nav-link:hover,
    .landing-nav-link:active {
        background: var(--color-bg-hover);
    }

    .landing-nav-link-active {
        color: var(--color-primary);
        font-weight: 600;
    }

    /* Extras section: language select + theme radio list stacked full-width,
       matching the nav-link row pattern above for visual consistency. */
    .landing-nav-menu-extras {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-xs);
        padding: var(--space-xs) 0 var(--space-md);
        margin-top: var(--space-xs);
        border-top: 1px solid var(--color-border-subtle);
    }

    .landing-nav-menu-extras .landing-nav-language-form {
        padding: 0 var(--space-lg);
    }

    .landing-nav-menu-extras .landing-nav-language-select {
        width: 100%;
    }

    /* Match nav-link row padding (space-lg) so the radio list left-aligns
       with language form and nav links above. */
    .landing-nav-menu-extras .theme-radio {
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }

    /* Hide desktop secondary actions */
    .landing-nav-secondary {
        display: none;
    }

    /* Login button stays in header bar */
    .landing-nav-actions {
        margin-left: auto;
    }

    /* --- Footer --- */
    .landing-footer-columns {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .landing-footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .landing-footer-bottom-left {
        flex-direction: column;
    }

    .landing-footer-social {
        justify-content: center;
    }

    .landing-footer-legal {
        justify-content: center;
    }
}

/* Tablet: bento 2 columns */
@media (min-width: 769px) and (max-width: 1024px) {
    .landing-features-bento {
        grid-template-columns: repeat(2, 1fr);
    }

    .landing-feature-card-large {
        grid-column: span 2;
        grid-row: span 1;
    }
}