/* ================================================================
   Landing Page — Design Tokens & Base
================================================================ */
:root {
    --color-primary: #1a56db;
    --color-primary-dark: #1e429f;
    --color-primary-light: #e8f0fe;
    --color-dark: #0f172a;
    --color-dark-2: #1e293b;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-bg: #f8fafc;
    --color-white: #ffffff;
    --radius: 10px;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.06);
    --shadow-md: 0 4px 12px 0 rgb(0 0 0 / 0.10), 0 2px 6px -2px rgb(0 0 0 / 0.06);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body.ui-landing {
    font-family: "Inter", system-ui, -apple-system, sans-serif;
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ================================================================
   Nav
================================================================ */
.ui-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    height: 64px;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.ui-nav__brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    color: var(--color-text);
}

.ui-nav__icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ui-nav__icon svg {
    display: block;
}

.ui-nav__name {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.ui-nav__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ================================================================
   Buttons
================================================================ */
.ui-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    cursor: pointer;
    text-decoration: none;
    border: 1.5px solid transparent;
    transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
}

.ui-btn-ghost {
    color: var(--color-text);
    border-color: transparent;
    background: transparent;
}

.ui-btn-ghost:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
}

.ui-btn-outline {
    color: var(--color-text);
    border-color: var(--color-border);
    background: var(--color-white);
}

.ui-btn-outline:hover {
    border-color: #94a3b8;
    background: var(--color-bg);
}

.ui-btn-primary {
    color: var(--color-white);
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.ui-btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.ui-btn-primary-lg {
    padding: 0.75rem 1.875rem;
    font-size: 1rem;
    border-radius: 8px;
}

/* ================================================================
   Hero
================================================================ */
.ui-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 6rem 1.5rem 5rem;
    background: linear-gradient(160deg, #f0f5ff 0%, var(--color-white) 60%);
    position: relative;
    overflow: hidden;
}

.ui-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.875rem;
    border-radius: 999px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.ui-hero__title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--color-text);
    max-width: 760px;
    margin-bottom: 1.25rem;
}

.ui-hero__title span {
    color: var(--color-primary);
}

.ui-hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 520px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.ui-hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.875rem;
    justify-content: center;
}

/* ================================================================
   Stats strip
================================================================ */
.ui-stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-white);
}

.ui-stat-item {
    flex: 1;
    min-width: 160px;
    max-width: 240px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    border-right: 1px solid var(--color-border);
    text-align: center;
}

.ui-stat-item:last-child {
    border-right: none;
}

.ui-stat-item__number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.375rem;
}

.ui-stat-item__label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ================================================================
   Features
================================================================ */
.ui-features {
    padding: 5rem 1.5rem;
    background: var(--color-bg);
}

.ui-section-header {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 3rem;
}

.ui-section-header__label {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 0.625rem;
}

.ui-section-header__title {
    font-size: clamp(1.625rem, 3vw, 2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.ui-section-header__desc {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.ui-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    max-width: 960px;
    margin: 0 auto;
}

.ui-feature-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.ui-feature-card:hover {
    box-shadow: var(--shadow-md);
    border-color: #c7d7f8;
}

.ui-feature-card__icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    flex-shrink: 0;
}

.ui-feature-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

.ui-feature-card__desc {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ================================================================
   CTA Banner
================================================================ */
.ui-cta-banner {
    background: var(--color-dark);
    padding: 5rem 1.5rem;
    text-align: center;
}

.ui-cta-banner__title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.03em;
    margin-bottom: 0.875rem;
    line-height: 1.2;
}

.ui-cta-banner__desc {
    font-size: 1rem;
    color: #94a3b8;
    max-width: 440px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.ui-btn-white {
    color: var(--color-dark);
    background: var(--color-white);
    border-color: var(--color-white);
    font-weight: 600;
}

.ui-btn-white:hover {
    background: #f1f5f9;
    border-color: #f1f5f9;
    box-shadow: var(--shadow-md);
}

/* ================================================================
   Footer
================================================================ */
.ui-footer {
    background: var(--color-dark-2);
    border-top: 1px solid #334155;
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.ui-footer__copy {
    font-size: 0.875rem;
    color: #64748b;
}

.ui-footer__links {
    display: flex;
    gap: 1.25rem;
}

.ui-footer__links a {
    font-size: 0.875rem;
    color: #64748b;
    text-decoration: none;
    transition: color 0.15s;
}

.ui-footer__links a:hover {
    color: #94a3b8;
}

/* ================================================================
   Responsive
================================================================ */
@media (max-width: 640px) {
    .ui-nav {
        padding: 0 1rem;
    }

    .ui-hero {
        padding: 4rem 1rem 3.5rem;
    }

    .ui-stat-item {
        min-width: 140px;
    }

    .ui-footer {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
}