:root {
    --fd-bg: #f7f9fc;
    --fd-surface: #ffffff;
    --fd-text: #102033;
    --fd-muted: #667085;
    --fd-border: #dbe3ef;
    --fd-primary: #2457e6;
    --fd-primary-dark: #173fb1;
    --fd-accent: #13b8a6;
    --fd-hero-start: #153fbd;
    --fd-hero-end: #12a6a2;
    --fd-shadow: 0 24px 70px rgba(16, 32, 51, 0.13);
    --bs-body-bg: var(--fd-bg);
    --bs-body-color: var(--fd-text);
    --bs-primary: var(--fd-primary);
    --bs-primary-rgb: 36, 87, 230;
}

[data-theme="dark"] {
    --fd-bg: #10131a;
    --fd-surface: #181d27;
    --fd-text: #eef4ff;
    --fd-muted: #aab5c5;
    --fd-border: #2a3342;
    --fd-primary: #75a7ff;
    --fd-primary-dark: #4d82ea;
    --fd-accent: #43d6c7;
    --fd-hero-start: #11255f;
    --fd-hero-end: #0b615f;
    --fd-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

* {
    letter-spacing: 0;
}

body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--fd-bg);
    color: var(--fd-text);
}

a {
    color: var(--fd-primary);
    text-decoration: none;
}

a:hover {
    color: var(--fd-primary-dark);
}

.navbar-blur {
    background: rgba(255, 255, 255, 0.86);
    border-bottom: 1px solid var(--fd-border);
    backdrop-filter: blur(18px);
}

[data-theme="dark"] .navbar-blur {
    background: rgba(24, 29, 39, 0.86);
}

[data-theme="dark"] .navbar-toggler {
    filter: invert(1);
}

.navbar .nav-link {
    color: var(--fd-muted);
    font-weight: 600;
}

.navbar .nav-link.active,
.navbar .nav-link:hover {
    color: var(--fd-primary);
}

.brand-mark {
    width: 38px;
    height: 38px;
    display: inline-grid;
    place-items: center;
    border-radius: 10px;
    color: #ffffff;
    font-weight: 800;
    background: linear-gradient(135deg, var(--fd-primary), var(--fd-accent));
}

.hero-section,
.page-hero {
    color: #ffffff;
    background:
        linear-gradient(135deg, rgba(21, 63, 189, 0.96), rgba(18, 166, 162, 0.92)),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.28), transparent 34%);
}

.hero-section {
    padding: 92px 0 72px;
}

.page-hero {
    padding: 72px 0;
}

.page-hero.compact {
    min-height: 310px;
    display: flex;
    align-items: center;
}

.min-vh-60 {
    min-height: 60vh;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.82);
}

.section-padding {
    padding: 76px 0;
}

.section-muted {
    background: color-mix(in srgb, var(--fd-primary) 6%, var(--fd-bg));
}

.section-heading {
    max-width: 680px;
    margin: 0 auto 36px;
    text-align: center;
}

.section-heading h2 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 800;
}

.narrow {
    max-width: 860px;
}

.shadow-soft {
    box-shadow: var(--fd-shadow);
}

.hero-panel,
.download-shell,
.newsletter-card,
.contact-form,
.feature-card,
.step-card,
.blog-card {
    background: var(--fd-surface);
    border: 1px solid var(--fd-border);
    border-radius: 8px;
}

.hero-panel {
    color: var(--fd-text);
    padding: 28px;
}

.input-preview {
    height: 52px;
    border-radius: 8px;
    background: linear-gradient(90deg, #eef3ff, #dffaf7);
    margin-bottom: 18px;
}

[data-theme="dark"] .input-preview {
    background: linear-gradient(90deg, #24365f, #173f45);
}

.preview-card {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 16px;
    border: 1px solid var(--fd-border);
    border-radius: 8px;
    margin-bottom: 18px;
}

.preview-card p {
    margin: 3px 0 0;
    color: var(--fd-muted);
}

.status-dot {
    width: 12px;
    height: 12px;
    margin-top: 6px;
    border-radius: 999px;
    background: var(--fd-accent);
}

.quality-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 13px 0;
    border-top: 1px solid var(--fd-border);
}

.quality-row button {
    border: 0;
    border-radius: 999px;
    padding: 7px 14px;
    color: #ffffff;
    background: var(--fd-primary);
}

.feature-card,
.step-card,
.blog-card {
    padding: 26px;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.feature-card:hover,
.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--fd-shadow);
}

.feature-icon,
.step-card span {
    width: 46px;
    height: 46px;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    color: #ffffff;
    font-weight: 800;
    background: linear-gradient(135deg, var(--fd-primary), var(--fd-accent));
    margin-bottom: 18px;
}

.feature-card h3,
.step-card h3,
.blog-card h2,
.blog-card h3 {
    font-size: 1.16rem;
    font-weight: 800;
}

.feature-card p,
.blog-card p,
.newsletter-card p {
    color: var(--fd-muted);
}

.blog-card time {
    display: block;
    color: var(--fd-muted);
    font-weight: 700;
    font-size: 0.86rem;
    margin-bottom: 12px;
}

.newsletter-card {
    padding: 28px;
}

.newsletter-form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
}

.download-shell {
    padding: clamp(20px, 4vw, 36px);
}

.download-form {
    margin-bottom: 24px;
}

.loading-state {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 0;
    color: var(--fd-muted);
    font-weight: 700;
}

.result-card {
    padding-top: 22px;
    border-top: 1px solid var(--fd-border);
}

.video-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--fd-border);
    background: var(--fd-bg);
}

.quality-list {
    display: grid;
    gap: 12px;
}

.quality-item {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--fd-border);
    border-radius: 8px;
    background: color-mix(in srgb, var(--fd-surface) 88%, var(--fd-primary) 12%);
}

.quality-item strong {
    display: block;
}

.quality-item span {
    color: var(--fd-muted);
    font-size: 0.92rem;
}

.contact-form {
    padding: 28px;
}

.legal-content h2 {
    margin-top: 28px;
    font-size: 1.35rem;
    font-weight: 800;
}

.accordion-item,
.accordion-button,
.form-control {
    background-color: var(--fd-surface);
    color: var(--fd-text);
    border-color: var(--fd-border);
}

.accordion-button:not(.collapsed) {
    color: var(--fd-primary);
    background: color-mix(in srgb, var(--fd-primary) 10%, var(--fd-surface));
}

.form-control:focus {
    border-color: var(--fd-primary);
    box-shadow: 0 0 0 0.25rem rgba(36, 87, 230, 0.18);
}

.ad-slot {
    max-width: 1120px;
    margin: 18px auto;
    min-height: 90px;
    display: grid;
    place-items: center;
    color: var(--fd-muted);
    border: 1px dashed var(--fd-border);
    border-radius: 8px;
    background: var(--fd-surface);
}

.site-footer {
    background: var(--fd-surface);
    border-top: 1px solid var(--fd-border);
}

.site-footer a {
    display: block;
    color: var(--fd-muted);
    margin: 8px 0;
}

.site-footer a:hover {
    color: var(--fd-primary);
}

.footer-title {
    font-size: 0.92rem;
    font-weight: 800;
    text-transform: uppercase;
}

.footer-bottom {
    color: var(--fd-muted);
    border-top: 1px solid var(--fd-border);
}

.btn {
    font-weight: 700;
}

.btn-primary {
    --bs-btn-bg: var(--fd-primary);
    --bs-btn-border-color: var(--fd-primary);
    --bs-btn-hover-bg: var(--fd-primary-dark);
    --bs-btn-hover-border-color: var(--fd-primary-dark);
}