:root {
  --g900: #7d0b14;
  --g800: #a50d19;
  --g700: #c8101e;
  --g600: #e30a17;
  --gold: #ffffff;
  --ink: #26211f;
  --muted: #6b6461;
  --line: #e3dcda;
  --bg: #f5f2f1;
  --red: #b3261e;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.shell { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); min-height: 100vh; }

/* Sol: kurumsal alan */
.hero { position: relative; color: #fff; display: flex; flex-direction: column; justify-content: center; padding: 56px 64px; overflow: hidden; background: linear-gradient(155deg, var(--g900), var(--g700) 70%, var(--g600)); }
.hero-bg {
  position: absolute; inset: 0; opacity: .5;
  background:
    radial-gradient(circle at 80% 15%, rgba(255,255,255,.22), transparent 38%),
    radial-gradient(circle at 10% 90%, rgba(255,255,255,.1), transparent 40%),
    repeating-linear-gradient(135deg, rgba(255,255,255,.035) 0 2px, transparent 2px 22px);
}
.hero::after { content: ""; position: absolute; right: -120px; bottom: -120px; width: 420px; height: 420px; border-radius: 50%; border: 1px solid rgba(255,255,255,.25); box-shadow: 0 0 0 40px rgba(255,255,255,.05), 0 0 0 90px rgba(255,255,255,.03); }
.hero-content { position: relative; max-width: 560px; }
.emblem { margin-bottom: 18px; filter: drop-shadow(0 6px 14px rgba(0,0,0,.35)); }
.kicker { margin: 0; letter-spacing: .35em; font-size: 13px; color: var(--gold); font-weight: 600; }
.hero h1 { margin: 6px 0 4px; font-size: 38px; line-height: 1.15; font-weight: 700; letter-spacing: .2px; }
.hero h2 { margin: 0; font-size: 20px; font-weight: 400; color: #f8d4d7; }
.rule { width: 72px; height: 3px; background: var(--gold); margin: 26px 0 22px; border-radius: 2px; }
.lead { margin: 0 0 14px; font-size: 22px; font-weight: 600; }
.points { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; color: #f8d4d7; font-size: 15px; }
.points li { position: relative; padding-left: 22px; }
.points li::before { content: ""; position: absolute; left: 0; top: 7px; width: 8px; height: 8px; border-radius: 2px; background: var(--gold); transform: rotate(45deg); }
.hero-foot { position: absolute; left: 64px; bottom: 28px; margin: 0; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.55); }

/* Sağ: form */
.panel { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 32px 24px; gap: 22px; }
.card { width: 100%; max-width: 420px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 36px 34px 30px; box-shadow: 0 18px 50px rgba(125,11,20,.14), 0 2px 6px rgba(125,11,20,.06); border-top: 4px solid var(--g700); }
.badge { display: inline-block; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; color: var(--g700); background: #fde7e9; padding: 4px 10px; border-radius: 999px; }
.card-head h3 { margin: 12px 0 4px; font-size: 26px; }
.card-head p { margin: 0 0 22px; color: var(--muted); font-size: 14px; }
.field { display: block; margin-bottom: 16px; }
.field > span { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.input { display: flex; align-items: center; gap: 10px; border: 1.5px solid var(--line); border-radius: 9px; padding: 0 12px; background: #fdfbfb; transition: border-color .15s, box-shadow .15s; color: var(--muted); }
.input:focus-within { border-color: var(--g600); box-shadow: 0 0 0 3px rgba(227,10,23,.15); background: #fff; color: var(--g700); }
.input input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; font: inherit; font-size: 15px; padding: 12px 0; color: var(--ink); }
.eye { border: 0; background: transparent; color: var(--g700); font: inherit; font-size: 12px; font-weight: 600; cursor: pointer; padding: 6px 2px; }
.submit { width: 100%; margin-top: 6px; border: 0; border-radius: 9px; padding: 13px; font: inherit; font-size: 15px; font-weight: 700; letter-spacing: .03em; color: #fff; background: linear-gradient(180deg, var(--g600), var(--g700)); cursor: pointer; box-shadow: 0 6px 14px rgba(200,16,30,.3); transition: transform .08s, filter .15s; }
.submit:hover { filter: brightness(1.07); }
.submit:active { transform: translateY(1px); }
.submit:disabled { opacity: .65; cursor: wait; }
.err { background: #fdecea; color: var(--red); border: 1px solid #f3c1bc; border-radius: 8px; padding: 10px 12px; font-size: 14px; margin-bottom: 16px; }
.note { margin: 16px 0 0; text-align: center; font-size: 12.5px; color: var(--muted); }
.copy { margin: 0; font-size: 12px; color: var(--muted); text-align: center; }

@media (max-width: 880px) {
  .shell { grid-template-columns: 1fr; }
  .hero { padding: 32px 24px 36px; }
  .hero h1 { font-size: 26px; }
  .hero h2 { font-size: 16px; }
  .points, .hero-foot, .hero::after { display: none; }
  .emblem { width: 56px; height: 56px; }
  .card { padding: 28px 22px; }
}