/* Closina marketing site — single stylesheet.
   Tokens mirror abp/src/Closina.Blazor.Client/wwwroot/css/closina-theme.css. */

:root {
    --closina-primary: #047857;
    --closina-primary-hover: #065f46;
    --closina-primary-light: rgba(4, 120, 87, 0.08);
    --closina-surface: #ffffff;
    --closina-surface-hover: #f8f8f6;
    --closina-background: #f8f8f6;
    --closina-border: rgba(0, 0, 0, 0.06);
    --closina-text-primary: #1a1a1a;
    --closina-text-secondary: #6b7280;
    --closina-text-muted: #6e6e6e;
    --closina-radius-md: 12px;
    --closina-radius-full: 9999px;
    --closina-shadow-md: 0 2px 4px rgba(0, 0, 0, 0.06);
    --closina-transition: 0.2s ease;
    --closina-transition-fast: 0.1s ease;
    --closina-overlay-light: rgba(255, 255, 255, 0.05);

    --container-max: 1140px;
    --gutter: 1.5rem;
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    color: var(--closina-text-primary);
    background-color: var(--closina-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.2; color: var(--closina-text-primary); }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: var(--closina-primary); text-decoration: none; transition: color var(--closina-transition-fast); }
a:hover { color: var(--closina-primary-hover); }

img, svg { max-width: 100%; height: auto; display: block; }

/* Accessibility */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.skip-link:focus {
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    background: var(--closina-surface);
    color: var(--closina-primary);
    border-radius: var(--closina-radius-md);
    z-index: 100;
}

/* Layout */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

/* Topbar */
.topbar {
    background-color: var(--closina-surface);
    border-bottom: 1px solid var(--closina-border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    gap: 1rem;
}
.brand { display: inline-flex; align-items: center; }
.brand img { height: 32px; width: auto; }
.topbar-nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}
.topbar-nav a {
    color: var(--closina-text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
}
.topbar-nav a:hover { color: var(--closina-primary); }

@media (max-width: 599px) {
    .topbar-nav { gap: 1rem; }
    .topbar-nav a { font-size: 0.85rem; }
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--closina-primary-hover) 0%, var(--closina-primary) 100%);
    color: #ffffff;
    position: relative;
    overflow: hidden;
    padding: 5rem 0;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--closina-overlay-light) 0%, transparent 70%);
    transform: rotate(45deg);
    pointer-events: none;
}
.hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
}
.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}
.tagline {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.95;
    line-height: 1.5;
}
.hero-contact {
    font-size: 1.0625rem;
    opacity: 0.95;
}
.hero-mailto {
    color: #ffffff;
    text-decoration: underline;
    text-underline-offset: 4px;
    font-weight: 600;
    margin-left: 0.25rem;
}
.hero-mailto:hover {
    color: #ffffff;
    opacity: 0.85;
}

@media (max-width: 959px) {
    .hero { padding: 3rem 0; }
    .hero h1 { font-size: 2.5rem; }
    .tagline { font-size: 1.0625rem; }
}

/* Features */
.features {
    padding: 5rem 0;
    background-color: var(--closina-background);
}
.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}
.section-subtitle {
    text-align: center;
    color: var(--closina-text-secondary);
    font-size: 1.0625rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.feature-section { margin-bottom: 3rem; }
.feature-section-head {
    text-align: center;
    margin-bottom: 1.5rem;
}
.section-icon {
    font-size: 2rem !important;
    color: var(--closina-primary);
}
.feature-section-head h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0.5rem 0 0.25rem;
}
.feature-section-sub {
    color: var(--closina-text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    gap: 1rem;
}
/* Default mobile: 2 columns */
.feature-grid-3,
.feature-grid-4,
.feature-grid-5,
.feature-grid-6 {
    grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 600px) {
    .feature-grid-3 { grid-template-columns: repeat(3, 1fr); }
    .feature-grid-4 { grid-template-columns: repeat(3, 1fr); }
    .feature-grid-5 { grid-template-columns: repeat(3, 1fr); }
    .feature-grid-6 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 992px) {
    .feature-grid-4 { grid-template-columns: repeat(4, 1fr); }
    .feature-grid-5 { grid-template-columns: repeat(5, 1fr); }
    .feature-grid-6 { grid-template-columns: repeat(6, 1fr); }
}

.feature-card {
    padding: 1.25rem;
    text-align: center;
    border-radius: var(--closina-radius-md);
    background-color: var(--closina-surface);
    border: 1px solid var(--closina-border);
    transition: transform var(--closina-transition), box-shadow var(--closina-transition);
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--closina-shadow-md);
}
.feature-icon {
    font-size: 28px !important;
    color: var(--closina-primary);
    background: var(--closina-primary-light);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    transition: background var(--closina-transition), color var(--closina-transition);
}
.feature-card:hover .feature-icon {
    background: var(--closina-primary);
    color: #ffffff;
}
.feature-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.feature-card p {
    font-size: 0.85rem;
    color: var(--closina-text-secondary);
    line-height: 1.4;
}

@media (max-width: 959px) {
    .features { padding: 3rem 0; }
    .section-title { font-size: 1.75rem; }
    .feature-card { padding: 1rem; }
    .feature-icon { width: 44px; height: 44px; font-size: 24px !important; }
}

/* Stats */
.stats {
    background-color: var(--closina-surface);
    border-top: 1px solid var(--closina-border);
    border-bottom: 1px solid var(--closina-border);
    padding: 3rem 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    text-align: center;
}
@media (min-width: 768px) {
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}
.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--closina-primary);
    line-height: 1.1;
}
.stat-label {
    font-size: 0.9rem;
    color: var(--closina-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}
@media (max-width: 599px) {
    .stat-number { font-size: 2rem; }
    .stat-label { font-size: 0.75rem; }
}

/* Contact CTA */
.contact-cta {
    background: linear-gradient(135deg, var(--closina-primary-hover) 0%, var(--closina-primary) 100%);
    color: #ffffff;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}
.contact-cta::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--closina-overlay-light) 0%, transparent 70%);
    transform: rotate(-45deg);
    pointer-events: none;
}
.contact-cta-inner {
    position: relative;
    z-index: 1;
    text-align: center;
}
.contact-cta h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}
.contact-cta p {
    font-size: 1.0625rem;
    max-width: 640px;
    margin: 0 auto 1rem;
    opacity: 0.95;
}
.contact-cta-mailto a {
    color: #ffffff;
    text-decoration: underline;
    text-underline-offset: 4px;
    font-weight: 600;
    margin-left: 0.25rem;
}
.contact-cta-mailto a:hover { color: #ffffff; opacity: 0.85; }

@media (max-width: 959px) {
    .contact-cta { padding: 3rem 0; }
    .contact-cta h2 { font-size: 1.75rem; }
}

/* Footer */
.site-footer {
    background-color: var(--closina-surface);
    border-top: 1px solid var(--closina-border);
    padding: 3rem 0 1.5rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.footer-heading {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: var(--closina-text-primary);
}
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a {
    color: var(--closina-text-secondary);
    font-size: 0.9rem;
}
.footer-links a:hover { color: var(--closina-primary); }
.footer-divider {
    border: none;
    border-top: 1px solid var(--closina-border);
    margin: 2rem 0 1rem;
}
.footer-copyright {
    color: var(--closina-text-muted);
    font-size: 0.85rem;
    text-align: center;
}

@media (max-width: 959px) {
    .footer-links a {
        display: inline-block;
        padding: 12px 0;
    }
}