:root {
  --bg: #ffffff; --fg: #131313; --muted: #5b6166; --line: #e4eaed;
  --accent: #7f55fa; --accent-2: #a78aff; --accent-soft: #efe9fe; --card: #f7f8f9;
  --ok: #1f9d6a; --warn: #fdaa66; --danger: #d64545;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #131313; --fg: #f2f2f2; --muted: #a3a9ad; --line: #2a2d30;
          --accent: #a78aff; --accent-2: #cebefd; --accent-soft: #2b2342; --card: #1b1c1e; color-scheme: dark; }
}
:root[data-theme="dark"] { --bg: #131313; --fg: #f2f2f2; --muted: #a3a9ad; --line: #2a2d30;
        --accent: #a78aff; --accent-2: #cebefd; --accent-soft: #2b2342; --card: #1b1c1e; color-scheme: dark; }
:root[data-theme="light"] { color-scheme: light; }
.theme-toggle { background: transparent; color: var(--fg); border: 1px solid var(--line); padding: 7px 11px; border-radius: 8px;
                font-size: 0.9rem; font-weight: 500; }
.theme-toggle:hover { background: var(--accent-soft); filter: none; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg);
       font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; flex-wrap: wrap; }
.logo { font-weight: 700; letter-spacing: -0.01em; display: flex; gap: 10px; align-items: center; color: var(--fg); text-decoration: none; }
.logo i { width: 22px; height: 22px; border-radius: 50%; border: 5px solid var(--accent); display: inline-block; }
nav { display: flex; gap: 6px; flex-wrap: wrap; }
nav a { color: var(--fg); text-decoration: none; padding: 7px 12px; border-radius: 8px; font-size: 0.95rem; }
nav a:hover, nav a.on { background: var(--accent-soft); }
nav a.btn { background: var(--accent); color: #fff; }

/* Buttons and forms */
.btn, button { display: inline-block; background: var(--accent); color: #fff; border: 0; text-decoration: none; cursor: pointer;
               padding: 12px 20px; border-radius: 10px; font-family: inherit; font-size: 1rem; font-weight: 600; line-height: 1.2; }
.btn:hover, button:hover { filter: brightness(1.08); }
.btn.ghost, button.ghost { background: transparent; color: var(--fg); border: 1px solid var(--line); }
button.small { padding: 6px 11px; font-size: 0.85rem; border-radius: 8px; }
button.link { background: none; color: var(--muted); padding: 4px 6px; font-weight: 500; }
button.link:hover { color: var(--danger); }
label { display: block; font-weight: 600; font-size: 0.92rem; margin: 14px 0 6px; }
input, textarea, select { width: 100%; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line);
                          background: var(--bg); color: var(--fg); font: inherit; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent-2); border-color: transparent; }
.msg { margin-top: 14px; font-size: 0.95rem; min-height: 1.4em; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--ok); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; padding: 48px 0 40px; }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 18px; }
.lead { font-size: 1.18rem; color: var(--muted); max-width: 50ch; margin: 0 0 28px; }
.hero img { width: 100%; height: auto; display: block; border-radius: 18px; }
.eyebrow { display: inline-block; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 0.8rem;
           letter-spacing: 0.06em; text-transform: uppercase; border-radius: 999px; padding: 4px 12px; margin-bottom: 16px; }
@media (max-width: 820px) { .hero { grid-template-columns: 1fr; padding-top: 24px; } }

/* Sections and cards */
section { padding: 28px 0; }
h2 { font-size: 1.7rem; letter-spacing: -0.01em; margin: 0 0 8px; }
.sub { color: var(--muted); margin: 0 0 22px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.97rem; }
.num { display: inline-block; background: var(--accent-soft); color: var(--accent); font-weight: 700;
       border-radius: 8px; padding: 2px 9px; margin-bottom: 12px; font-size: 0.85rem; }
.price { font-size: 2rem; font-weight: 800; margin: 8px 0 2px; }
.price small { font-size: 0.9rem; font-weight: 500; color: var(--muted); }
.card ul { padding-left: 18px; margin: 14px 0 0; color: var(--muted); font-size: 0.95rem; }
.card.featured { border: 2px solid var(--accent); }

/* The note for AI agents: same colour as the background, so humans do not see it but text readers do. */
.agent-note { color: var(--bg); background: var(--bg); font-size: 3px; line-height: 1.1; margin: 0; padding: 0; white-space: normal; }
.agent-note::selection, .agent-note *::selection { color: var(--fg); background: var(--accent-soft); }

/* Narrow pages (login, register, contact) */
.narrow { max-width: 460px; margin: 40px auto 60px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 28px; }
.panel h1 { margin: 0 0 8px; font-size: 1.8rem; }

footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 26px 0 40px; color: var(--muted); font-size: 0.88rem; }
footer .cols { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }