/* VR-освіта landing: світла сіро-біла тема, як в адмінці */
:root { --ink: #1f2328; --text: #374151; --muted: #6b7280; --line: #e5e7eb; --line-hi: #d1d5db; --bg: #f5f6f7; --card: #ffffff; --accent: #1f2937; --accent-hi: #374151; color-scheme: light; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; color: var(--text); background: var(--bg); font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; line-height: 1.5; -webkit-font-smoothing: antialiased; }
body.modal-open { overflow: hidden; }
.bg { position: fixed; inset: 0; z-index: -1; background: linear-gradient(180deg, #ffffff 0%, #f5f6f7 40%, #eef0f2 100%); }
a { color: inherit; }
.muted { color: var(--muted); }
.center { text-align: center; }
.small-text { font-size: 13px; }

/* шапка */
.nav { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 24px; padding: 14px max(16px, 4vw); background: rgba(255,255,255,.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { height: 22px; }
.links { display: flex; gap: 22px; margin-left: auto; }
.links a { text-decoration: none; color: var(--text); font-size: 14px; font-weight: 500; }
.links a:hover { color: var(--ink); }
@media (max-width: 640px) { .links { display: none; } .nav { gap: 12px; } .nav .btn { margin-left: auto; } }

/* кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; border-radius: 10px; border: 1px solid transparent; padding: 12px 24px; font: inherit; font-size: 15px; font-weight: 600; color: #fff; background: var(--accent); text-decoration: none; transition: background .15s, border-color .15s; }
.btn:hover { background: var(--accent-hi); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .tab:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn.ghost { background: var(--card); color: var(--ink); border-color: var(--line-hi); }
.btn.ghost:hover { background: #f3f4f6; border-color: #9ca3af; }
.btn.small { padding: 8px 16px; font-size: 13px; }
.row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* герой */
.hero { max-width: 960px; margin: 0 auto; padding: 64px 16px 40px; text-align: center; }
.hero-logo img { width: min(360px, 76vw); }
.hero-logo .sub { font-weight: 500; font-size: 13px; letter-spacing: 4px; text-transform: uppercase; color: var(--muted); margin-top: 12px; }
h1 { font-size: clamp(28px, 4.6vw, 44px); line-height: 1.15; font-weight: 800; margin: 36px 0 16px; color: var(--ink); letter-spacing: -.01em; }
.lead { font-size: 17px; color: var(--text); max-width: 720px; margin: 0 auto 26px; }
.facts { list-style: none; display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; padding: 0; margin: 40px 0 0; }
.facts li { min-width: 170px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
.facts b { display: block; font-size: 24px; color: var(--ink); }
.facts span { font-size: 13px; color: var(--muted); }

/* секції */
.section { max-width: 1140px; margin: 0 auto; padding: 56px 16px; }
.section.narrow { max-width: 760px; }
h2 { text-align: center; font-size: clamp(24px, 3.4vw, 32px); margin: 0 0 10px; font-weight: 700; color: var(--ink); }
.section > .muted { max-width: 680px; margin: 0 auto 30px; }
.card { border: 1px solid var(--line); border-radius: 16px; padding: 28px; background: var(--card); box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.04); }

/* фільтр предметів */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin: 0 0 26px; }
.tab { --c: #6b7280; cursor: pointer; font: inherit; font-size: 14px; font-weight: 600; color: var(--text); background: var(--card); border: 1px solid var(--line-hi); border-radius: 999px; padding: 7px 16px; transition: border-color .15s, background .15s; }
.tab:hover { border-color: #9ca3af; }
.tab.active { color: #fff; background: var(--accent); border-color: var(--accent); }

/* каталог */
.apps { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.app { border-radius: 14px; overflow: hidden; border: 1px solid var(--line); background: var(--card); transition: border-color .2s, box-shadow .2s; display: flex; flex-direction: column; }
.app:hover { border-color: var(--line-hi); box-shadow: 0 10px 28px rgba(0,0,0,.08); }
.app .art { height: 160px; background: #f3f4f6 center/cover no-repeat; display: grid; place-items: center; font-size: 48px; font-weight: 800; color: #9ca3af; position: relative; border-bottom: 1px solid var(--line); }
.app .subj { --c: #6b7280; position: absolute; left: 12px; bottom: 12px; font-size: 11px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; color: var(--ink); background: #fff; border: 1px solid var(--line-hi); box-shadow: inset 3px 0 0 var(--c); }
.app .new { position: absolute; top: 12px; right: 12px; font-size: 11px; font-weight: 800; letter-spacing: 1px; padding: 3px 10px; border-radius: 999px; color: #fff; background: var(--accent); }
.app .body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.app h3 { margin: 0; font-size: 17px; color: var(--ink); }
.app p { margin: 0; color: var(--muted); font-size: 14px; flex: 1; }
.meta { display: flex; gap: 6px; flex-wrap: wrap; }
.pill { font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: #f3f4f6; color: var(--text); }
.app .btn { align-self: flex-start; margin-top: 6px; }

/* кроки */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; margin-top: 26px; }
.step { border: 1px solid var(--line); border-radius: 14px; padding: 22px; background: var(--card); }
.step b { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: #f3f4f6; color: var(--ink); border: 1px solid var(--line-hi); font-size: 15px; margin-bottom: 12px; }
.step h3 { margin: 0 0 6px; font-size: 16px; color: var(--ink); }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* пакети */
.packs { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; align-items: stretch; }
.pack { position: relative; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 16px; padding: 28px 26px; background: var(--card); }
.pack.top { border: 2px solid var(--accent); box-shadow: 0 12px 32px rgba(0,0,0,.08); }
.ribbon { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; padding: 4px 12px; border-radius: 999px; color: #fff; background: var(--accent); }
.pack h3 { margin: 0; font-size: 19px; color: var(--ink); }
.price { font-size: 34px; font-weight: 800; margin: 8px 0 2px; color: var(--ink); }
.tagline { color: var(--muted); font-size: 14px; min-height: 42px; }
.pack ul { list-style: none; padding: 0; margin: 18px 0 24px; display: grid; gap: 9px; font-size: 14px; flex: 1; }
.pack li { padding-left: 24px; position: relative; }
.pack li::before { content: '✓'; position: absolute; left: 0; color: var(--ink); font-weight: 700; }
.pack .btn { width: 100%; }

/* форма */
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-size: 13px; font-weight: 500; color: var(--ink); }
.form input, .form select, .form textarea { width: 100%; background: #fff; border: 1px solid var(--line-hi); border-radius: 8px; color: var(--ink); padding: 10px 12px; font: inherit; font-size: 15px; outline: none; }
.form input::placeholder, .form textarea::placeholder { color: #9ca3af; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: #6b7280; box-shadow: 0 0 0 3px rgba(107,114,128,.18); }
.form .btn { justify-self: start; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.ok, .err { max-width: 760px; margin: 0 auto 18px; padding: 12px 16px; border-radius: 10px; font-size: 14px; }
.ok { background: #ecfdf3; border: 1px solid #a7e3bf; color: #14532d; }
.err { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.ok-badge { width: 60px; height: 60px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; font-size: 28px; font-weight: 800; color: #fff; background: #16a34a; }
.card.center .btn { margin-top: 14px; }

/* модалка */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 16px; background: rgba(17,24,39,.4); }
.modal[hidden] { display: none; }
.modal-card { position: relative; width: min(620px, 100%); max-height: 100%; overflow: auto; }
.modal-card h3 { margin: 0 0 4px; font-size: 21px; color: var(--ink); }
.modal-card .muted { margin-bottom: 16px; }
.modal-card .x { position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line-hi); background: #fff; color: var(--ink); font-size: 20px; cursor: pointer; }
.modal-card .x:hover { background: #f3f4f6; }
.modal-card .form .btn { justify-self: stretch; }

.footer { max-width: 1140px; margin: 40px auto 0; padding: 28px 16px 40px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; border-top: 1px solid var(--line); font-size: 13px; }
.footlogo { height: 20px; margin-bottom: 6px; }
.footer a { color: var(--text); text-decoration: none; }