/**
 * Site theme inspired by Humblytics: light canvas, near-black type,
 * Inter, orange primary CTAs, white cards, quiet borders.
 */
:root {
    --is-bg: #f5f5f5;
    --is-fg: #171717;
    --is-muted: #737373;
    --is-border: #f0f0f0;
    --is-border-strong: #e5e5e5;
    --is-card: #ffffff;
    --is-primary: #d54e00;
    --is-primary-hover: #b84200;
    --is-primary-soft: rgba(213, 78, 0, 0.1);
    --is-primary-shadow: rgba(213, 78, 0, 0.22);
    --is-radius-sm: 8px;
    --is-radius: 12px;
    --is-radius-lg: 16px;
    --is-font: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html.scroll-smooth {
    scroll-behavior: smooth;
}

body.site-theme {
    font-family: var(--is-font);
    background: var(--is-bg);
    color: var(--is-fg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.site-theme .font-inter,
body.site-theme {
    font-family: var(--is-font) !important;
}

/* Header — flat sticky bar */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    width: 100%;
    background: var(--is-card);
    border-bottom: 1px solid var(--is-border);
}

.site-header__inner {
    max-width: 72rem;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .site-header__inner {
        padding: 0 1.5rem;
    }
}

.site-header__bar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    height: 3.5rem;
    background: transparent;
}

.site-header .nav-link,
.site-header nav button {
    color: #404040;
    font-size: 0.875rem;
    font-weight: 500;
}

.site-header .nav-link:hover,
.site-header nav button:hover {
    color: var(--is-fg);
}

/* Buttons */
.is-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border-radius: var(--is-radius-sm);
    padding: 0.55rem 1.1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.2;
    text-decoration: none;
    border: 1px solid transparent;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    cursor: pointer;
    white-space: nowrap;
}

.is-btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.8125rem;
}

.is-btn-primary {
    background: var(--is-primary);
    color: #fff !important;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.is-btn-primary:hover {
    background: var(--is-primary-hover);
}

.is-btn-secondary {
    background: var(--is-fg);
    color: #fff !important;
}

.is-btn-secondary:hover {
    background: #000;
}

.is-btn-ghost {
    background: transparent;
    color: var(--is-fg) !important;
    border-color: var(--is-border-strong);
}

.is-btn-ghost:hover {
    background: #fafafa;
    border-color: #d4d4d4;
}

/* Override legacy dark CTA in header */
.site-header .btn.bg-gray-800,
.site-header .btn.bg-gray-900 {
    background: var(--is-primary) !important;
    color: #fff !important;
    border-radius: var(--is-radius-sm) !important;
    box-shadow: none !important;
}

.site-header .btn.bg-gray-800:hover,
.site-header .btn.bg-gray-900:hover {
    background: var(--is-primary-hover) !important;
}

/* Footer */
body.site-theme > .flex > footer,
body.site-theme footer {
    background: var(--is-card);
    border-top: 1px solid var(--is-border);
    color: var(--is-fg);
}

body.site-theme footer h3 {
    color: var(--is-fg);
    font-weight: 500;
}

body.site-theme footer a {
    color: var(--is-muted);
}

body.site-theme footer a:hover {
    color: var(--is-fg);
}

/* Shared marketing primitives */
.is-container {
    width: min(72rem, calc(100% - 2rem));
    margin-inline: auto;
}

.is-card {
    background: var(--is-card);
    border: 1px solid var(--is-border);
    border-radius: var(--is-radius);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.03), 0 24px 48px -16px var(--is-primary-shadow);
}

.is-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--is-primary);
    letter-spacing: 0.02em;
}

.is-h1 {
    font-family: var(--is-font);
    font-size: clamp(2.25rem, 5vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    line-height: 1.1;
    color: var(--is-fg);
}

.is-h2 {
    font-family: var(--is-font);
    font-size: clamp(1.75rem, 3.5vw, 2.25rem);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--is-fg);
}

.is-lead {
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--is-muted);
    max-width: 40rem;
}

/* Soften Mosaic-era violet blobs on themed pages */
body.site-theme .from-violet-600,
body.site-theme .to-blue-600 {
    --tw-gradient-from: #d54e00 var(--tw-gradient-from-position);
    --tw-gradient-to: #fb923c var(--tw-gradient-to-position);
}

/* Home hero CTA nudge toward theme */
body.site-theme main .btn.bg-gray-800 {
    background: var(--is-primary) !important;
    border-radius: var(--is-radius-sm);
}

body.site-theme main .btn.bg-gray-800:hover {
    background: var(--is-primary-hover) !important;
}

body.site-theme main h1 {
    font-weight: 500;
    letter-spacing: -0.035em;
}