/* =========================================================================
   Donify Theme — tokens, layout, header, footer, content, dark mode
   ========================================================================= */

:root {
	--bg: #f6f7fb;
	--surface: #ffffff;
	--surface-2: #f1f3f9;
	--text: #0f172a;
	--muted: #5b6477;
	--border: #e3e6ef;
	--accent: #4f46e5;
	--accent-2: #7c3aed;
	--accent-ink: #ffffff;
	--shadow: 0 10px 30px rgba(15, 23, 42, .07);
	--radius: 14px;
	--header-h: 68px;
	--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	color-scheme: light;
}

[data-theme="dark"] {
	--bg: #0b0f1a;
	--surface: #121826;
	--surface-2: #1a2233;
	--text: #e7ebf3;
	--muted: #98a2b8;
	--border: #263045;
	--accent: #818cf8;
	--accent-2: #a78bfa;
	--accent-ink: #0b0f1a;
	--shadow: 0 10px 30px rgba(0, 0, 0, .35);
	color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: clip; }
body {
	margin: 0; min-height: 100vh; display: flex; flex-direction: column;
	font-family: var(--font); font-size: 16px; line-height: 1.65;
	color: var(--text); background: var(--bg);
	transition: background-color .2s ease, color .2s ease;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); }
a:hover { text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.25; margin: 1.4em 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 1000; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 6px; }
.skip-link:focus { left: 8px; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.container--read { max-width: 820px; }
.container--narrow { max-width: 620px; }
.container--wide { max-width: 1240px; }
.site-main { flex: 1; padding-bottom: 48px; }

/* Buttons */
.btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 8px;
	padding: 10px 18px; border-radius: 10px; font-weight: 650; font-size: .95rem;
	text-decoration: none; border: 1px solid transparent; cursor: pointer;
	transition: filter .15s ease, background-color .15s ease, transform .1s ease;
	white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }
[data-theme="dark"] .btn--primary { color: #0b0f1a; }
.btn--primary:hover { filter: brightness(1.08); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface-2); }
.btn--lg { padding: 14px 24px; font-size: 1.02rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 700; color: var(--accent); margin: 0 0 10px; }

/* Header */
.site-header {
	position: sticky; top: 0; z-index: 100;
	background: color-mix(in srgb, var(--surface) 88%, transparent);
	backdrop-filter: saturate(160%) blur(10px); -webkit-backdrop-filter: saturate(160%) blur(10px);
	border-bottom: 1px solid var(--border);
}
.admin-bar .site-header { top: 32px; }
.site-header__inner { height: var(--header-h); display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 800; letter-spacing: -.01em; flex: none; }
.brand__mark {
	display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
	background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-size: 1.1rem;
}
.brand__name { font-size: 1.02rem; }
.brand__logo { max-height: 44px; width: auto; }

.nav { display: flex; align-items: center; gap: 20px; margin-left: auto; }
.nav__list { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.nav__list a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--text); text-decoration: none; font-weight: 550; font-size: .95rem; }
.nav__list a:hover, .nav__list .current-menu-item > a { background: var(--surface-2); }
.nav__list .sub-menu { display: none; }
.nav__actions { display: flex; gap: 10px; }
.site-header__tools { display: flex; align-items: center; gap: 6px; }

.theme-toggle, .nav-toggle {
	display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px;
	border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer;
}
.theme-toggle:hover { background: var(--surface-2); }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
.nav-toggle { display: none; gap: 4px; padding: 10px; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Hero (placeholder until Step 6 content) */
.hero { padding: clamp(56px, 10vw, 120px) 0; text-align: center; position: relative; overflow: hidden; }
.hero::before {
	content: ""; position: absolute; inset: -40% -10% auto; height: 120%;
	background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 22%, transparent), transparent);
	z-index: -1;
}
.hero__inner { max-width: 760px; }
.hero__title { font-size: clamp(2.2rem, 6vw, 3.6rem); margin: 0 0 16px; }
.hero__lead { font-size: 1.15rem; color: var(--muted); margin: 0 auto 28px; max-width: 600px; }
.hero .btn-row { justify-content: center; }

/* Content pages */
.page-entry { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(22px, 4vw, 44px); margin-top: 32px; box-shadow: var(--shadow); }
.is-app-page .page-entry { background: none; border: 0; box-shadow: none; padding: 0; margin-top: 24px; }
.page-entry__header { border-bottom: 1px solid var(--border); margin-bottom: 24px; padding-bottom: 14px; }
.page-entry__title { margin: 0 0 6px; }
.page-entry__title a { color: inherit; text-decoration: none; }
.page-entry__meta { margin: 0; color: var(--muted); font-size: .9rem; }
.entry-content > *:first-child { margin-top: 0; }
.entry-content ul, .entry-content ol { padding-left: 1.3em; }
.entry-content li { margin-bottom: .35em; }
.entry-content table { width: 100%; border-collapse: collapse; margin: 1em 0; }
.entry-content th, .entry-content td { border: 1px solid var(--border); padding: 10px; text-align: left; }
.entry-content blockquote { margin: 1.2em 0; padding: 12px 18px; border-left: 4px solid var(--accent); background: var(--surface-2); border-radius: 0 10px 10px 0; }
.page-404 { text-align: center; }
.page-404 .btn-row { justify-content: center; }

/* Footer */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); padding: 48px 0 0; font-size: .93rem; }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr 1fr; gap: 32px; }
.footer__about p { color: var(--muted); margin-top: 14px; max-width: 320px; }
.footer__title { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; margin: 4px 0 14px; color: var(--muted); }
.footer__links { list-style: none; margin: 0; padding: 0; }
.footer__links li { margin-bottom: 8px; }
.footer__links a { color: var(--text); text-decoration: none; }
.footer__links a:hover { color: var(--accent); }
.site-footer__bottom { margin-top: 36px; padding-top: 18px; padding-bottom: 22px; border-top: 1px solid var(--border); color: var(--muted); font-size: .84rem; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.site-footer__bottom p { margin: 0; }
.footer__note { max-width: 640px; }

/* Responsive */
@media (max-width: 960px) {
	.nav-toggle { display: grid; }
	/* backdrop-filter would trap the fixed menu panel inside the header. */
	.site-header { backdrop-filter: none; -webkit-backdrop-filter: none; background: var(--surface); }
	.nav {
		position: fixed; left: 0; right: 0; top: var(--header-h); bottom: 0;
		flex-direction: column; align-items: stretch; gap: 16px; margin: 0;
		padding: 20px; background: var(--surface); border-top: 1px solid var(--border);
		transform: translateX(100%); visibility: hidden; transition: transform .25s ease, visibility .25s; overflow-y: auto;
	}
	.nav-open .nav { visibility: visible; }
	.admin-bar .nav { top: calc(var(--header-h) + 46px); }
	.nav-open .nav { transform: none; }
	.nav__list { flex-direction: column; }
	.nav__list a { padding: 12px; font-size: 1.05rem; }
	.nav__actions { flex-direction: column; }
	.nav__actions .btn { width: 100%; padding: 12px; }
	.site-header__tools { margin-left: auto; }
	.site-footer__grid { grid-template-columns: 1fr 1fr; }
	body.nav-open { overflow: hidden; }
}
@media (max-width: 782px) { .admin-bar .site-header { top: 46px; } }
@media (max-width: 560px) {
	.container { padding: 0 16px; }
	.site-footer__grid { grid-template-columns: 1fr; gap: 24px; }
	.brand__name { font-size: .92rem; }
}
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}