:root {
  --bg: #0b0d12;
  --card: #151922;
  --card2: #1c2130;
  --text: #e8eaf0;
  --muted: #98a0b3;
  --accent: #6ea8ff;
  --accent2: #a98bff;
  --ok: #57d68a;
  --err: #ff6b6b;
  --line: #262c3a;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1a2033 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
}

a { color: var(--accent); }

/* ---- checkout card ---- */
.card {
  max-width: 460px;
  margin: 6vh auto;
  padding: 32px 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.logo { font-size: 40px; text-align: center; }
.card h1 { text-align: center; font-size: 26px; margin: 8px 0 4px; }
.price {
  text-align: center; font-size: 28px; font-weight: 700;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin: 4px 0 24px;
}
.price span { display: block; font-size: 13px; font-weight: 400; color: var(--muted); -webkit-text-fill-color: var(--muted); }

.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input {
  width: 100%; padding: 12px 14px; font-size: 16px;
  background: var(--card2); border: 1px solid var(--line);
  border-radius: 10px; color: var(--text); outline: none;
}
.field input:focus { border-color: var(--accent); }
.hint { font-size: 12px; color: var(--muted); margin: 6px 0 0; }
.hint.gate { text-align: center; color: var(--accent2); }

#paypal-buttons { margin-top: 20px; min-height: 45px; transition: opacity .2s; }

.result, .error { margin-top: 22px; padding: 18px; border-radius: 12px; }
.result { background: rgba(87,214,138,.08); border: 1px solid rgba(87,214,138,.3); }
.result h2 { margin: 0 0 8px; color: var(--ok); font-size: 18px; }
.key-row { display: flex; gap: 8px; align-items: stretch; margin: 10px 0; }
.key-row code {
  flex: 1; padding: 12px; background: #0c0f16; border: 1px solid var(--line);
  border-radius: 8px; font-size: 12px; word-break: break-all; color: #cfe1ff;
}
.copy-btn, .secondary-btn {
  padding: 0 16px; border: none; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: #08111f; font-weight: 600;
}
.secondary-btn { background: var(--card2); color: var(--text); border: 1px solid var(--line); padding: 10px 16px; margin-top: 8px; }
.error { background: rgba(255,107,107,.08); border: 1px solid rgba(255,107,107,.3); color: var(--err); font-size: 14px; }
.hidden { display: none; }

.recover { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 16px; }
.recover summary { cursor: pointer; color: var(--muted); font-size: 14px; }

/* ---- landing ---- */
.landing { max-width: 760px; margin: 0 auto; padding: 40px 20px; }
.hero { text-align: center; padding: 40px 0; }
.logo-lg { font-size: 56px; color: var(--accent2); }
.hero h1 { font-size: 44px; margin: 8px 0; }
.tagline { color: var(--muted); font-size: 18px; max-width: 520px; margin: 0 auto 28px; }
.cta {
  display: inline-block; padding: 14px 28px; border-radius: 12px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #08111f; font-weight: 700; text-decoration: none; font-size: 17px;
}
.sub { color: var(--muted); font-size: 13px; margin-top: 12px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 30px 0; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.feature h3 { margin: 0 0 8px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }
.pro { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px; text-align: center; margin: 30px 0; }
.pro ul { list-style: none; padding: 0; display: inline-block; text-align: left; margin: 16px 0 24px; }
.pro li { padding: 6px 0 6px 26px; position: relative; }
.pro li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 700; }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 30px 0; }