/* OneDayApps — foundational design system. Theme-aware, mobile-first, zero-build. */
:root {
  --bg: #ffffff; --bg-2: #f6f8fc; --card: #ffffff; --border: #e6eaf2;
  --ink: #0e1424; --muted: #58627a; --faint: #8a93a7;
  --accent: #0b5cff; --accent-ink: #ffffff; --verify: #0f9d6b; --verify-bg: #eaf7f1;
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
  --radius: 16px; --maxw: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0e17; --bg-2: #0d1220; --card: #111726; --border: #1e2740;
    --ink: #eef2fb; --muted: #a4afc7; --faint: #6b7690;
    --accent: #4d86ff; --accent-ink: #06122b; --verify: #2ddda0; --verify-bg: #0f2a22;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}
:root[data-theme="light"] { --bg:#fff; --bg-2:#f6f8fc; --card:#fff; --border:#e6eaf2; --ink:#0e1424; --muted:#58627a; --faint:#8a93a7; --accent:#0b5cff; --accent-ink:#fff; --verify:#0f9d6b; --verify-bg:#eaf7f1; --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06); }
:root[data-theme="dark"] { --bg:#0a0e17; --bg-2:#0d1220; --card:#111726; --border:#1e2740; --ink:#eef2fb; --muted:#a4afc7; --faint:#6b7690; --accent:#4d86ff; --accent-ink:#06122b; --verify:#2ddda0; --verify-bg:#0f2a22; --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6; -webkit-font-smoothing: antialiased; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--accent); color: #fff; padding: 10px 14px; border-radius: 10px; z-index: 99; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0; }

/* nav */
.nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--border); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.02em; color: var(--ink); font-size: 18px; }
.brand .mark { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 800; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.theme-btn { background: transparent; border: 1px solid var(--border); color: var(--muted); width: 40px; height: 40px; border-radius: 10px; cursor: pointer; font-size: 16px; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px;
  padding: 12px 22px; border-radius: 12px; font-weight: 700; font-size: 15px; cursor: pointer; border: 1px solid transparent; transition: transform .06s ease, box-shadow .2s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--border); }
.btn-lg { min-height: 54px; padding: 15px 28px; font-size: 16px; }

/* hero */
.hero { padding: 76px 0 40px; background: radial-gradient(1200px 500px at 70% -10%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%); }
.kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--verify); background: var(--verify-bg); border: 1px solid color-mix(in srgb, var(--verify) 30%, transparent); padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(32px, 5.2vw, 54px); margin: 20px 0 0; max-width: 16ch; }
.hero .sub { font-size: clamp(17px, 2.2vw, 20px); color: var(--muted); margin: 20px 0 0; max-width: 60ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note { margin-top: 18px; color: var(--faint); font-size: 14px; }

/* generic section */
section { padding: 56px 0; }
.eyebrow { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: .02em; }
.section-h { font-size: clamp(24px, 3.4vw, 34px); margin-top: 8px; max-width: 22ch; }
.section-sub { color: var(--muted); margin-top: 12px; max-width: 62ch; }

/* pillars */
.grid { display: grid; gap: 18px; }
.pillars { grid-template-columns: repeat(3, 1fr); margin-top: 34px; }
.pillar { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.pillar .lbl { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }
.pillar h3 { font-size: 19px; margin: 10px 0 8px; }
.pillar p { color: var(--muted); margin: 0; font-size: 15px; }

/* guarantee band */
.guarantee { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.guarantee .inner { display: flex; gap: 20px; align-items: flex-start; max-width: 900px; }
.guarantee .shield { flex: none; width: 52px; height: 52px; border-radius: 14px; background: var(--verify-bg); color: var(--verify); display: grid; place-items: center; font-size: 26px; border: 1px solid color-mix(in srgb, var(--verify) 30%, transparent); }
.guarantee h2 { font-size: clamp(22px, 3vw, 30px); }
.guarantee p { color: var(--muted); margin: 12px 0 0; font-size: 17px; }

/* steps */
.steps { grid-template-columns: repeat(5, 1fr); margin-top: 34px; }
.step { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.step .n { width: 34px; height: 34px; border-radius: 9px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 800; }
.step h3 { font-size: 16px; margin: 14px 0 6px; }
.step p { color: var(--muted); font-size: 14px; margin: 0; }

/* offers */
.offers { grid-template-columns: repeat(3, 1fr); margin-top: 34px; }
.offer { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.offer .tag { align-self: flex-start; font-size: 12px; font-weight: 700; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); padding: 5px 10px; border-radius: 999px; }
.offer h3 { font-size: 20px; margin: 14px 0 10px; }
.offer .out { color: var(--muted); font-size: 15px; margin: 0 0 14px; }
.offer .who { color: var(--faint); font-size: 13px; margin: auto 0 16px; font-style: italic; }
.offer .link { font-weight: 700; }

/* proof */
.proof-grid { grid-template-columns: repeat(2, 1fr); margin-top: 34px; }
.proof { background: var(--card); border: 1px solid var(--border); border-left: 3px solid var(--verify); border-radius: 12px; padding: 20px 22px; }
.proof .check { color: var(--verify); font-weight: 800; }
.proof p { margin: 8px 0 0; }
.proof .st { font-weight: 650; color: var(--ink); }
.proof .ev { color: var(--muted); font-size: 14px; margin-top: 8px; }

/* CTA form */
.cta { background: var(--bg-2); border-top: 1px solid var(--border); }
.cta-card { background: var(--card); border: 1px solid var(--border); border-radius: 20px; padding: 34px; max-width: 720px; margin: 0 auto; box-shadow: var(--shadow); }
.cta-card h2 { font-size: clamp(24px, 3vw, 32px); }
.cta-card .sub { color: var(--muted); margin: 10px 0 22px; }
.field { display: block; margin-bottom: 14px; }
.field label { display: block; font-size: 14px; font-weight: 650; margin-bottom: 6px; }
.field input, .field textarea { width: 100%; padding: 13px 14px; border-radius: 11px; border: 1px solid var(--border); background: var(--bg); color: var(--ink); font: inherit; }
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent); border-color: var(--accent); }
.consent { color: var(--faint); font-size: 13px; margin: 4px 0 18px; }
.form-msg { margin-top: 14px; padding: 14px; border-radius: 11px; font-weight: 600; display: none; }
.form-msg.ok { display: block; background: var(--verify-bg); color: var(--verify); border: 1px solid color-mix(in srgb, var(--verify) 30%, transparent); }
.form-msg.err { display: block; background: #fdecec; color: #c0392b; border: 1px solid #f5c6c6; }

/* footer */
footer { border-top: 1px solid var(--border); padding: 32px 0; color: var(--faint); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; }

/* responsive */
@media (max-width: 900px) {
  .pillars, .offers { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .proof-grid { grid-template-columns: 1fr; }
  .guarantee .inner { flex-direction: column; }
}
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } .hero { padding-top: 52px; } }