:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1d2733;
  --muted: #657180;
  --line: #d8dee6;
  --accent: #1769aa;
  --accent-dark: #10568d;
  --danger: #b42318;
  --success: #16794b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 40px;
}

.hero { margin-bottom: 28px; }
.brand {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 14px;
}
h1 { margin: 0 0 10px; font-size: clamp(30px, 5vw, 46px); letter-spacing: -.025em; }
.hero p { margin: 0; color: var(--muted); font-size: 17px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 30px;
  box-shadow: 0 12px 40px rgba(22, 34, 48, .07);
}

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { display: block; margin-bottom: 20px; }
label span { display: block; font-weight: 700; margin-bottom: 8px; }

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font: inherit;
  padding: 12px 13px;
  outline: none;
}
textarea { resize: vertical; min-height: 150px; }
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23,105,170,.11);
}
small { color: var(--muted); display: block; margin-top: 7px; }

.actions {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 8px;
}
button {
  border: 0;
  border-radius: 10px;
  padding: 12px 20px;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  background: var(--accent);
  color: white;
}
button:hover { background: var(--accent-dark); }
button:disabled { opacity: .6; cursor: wait; }
.secondary { background: #edf2f7; color: var(--text); }
.secondary:hover { background: #e1e8ef; }

#status { color: var(--danger); font-size: 14px; }
.success { text-align: center; padding: 40px 15px; }
.success-mark {
  width: 64px; height: 64px; margin: 0 auto 18px;
  border-radius: 50%; display: grid; place-items: center;
  background: #e8f6ef; color: var(--success);
  font-size: 34px; font-weight: 800;
}
.success h2 { margin: 0 0 8px; }
.success p { color: var(--muted); margin: 0 0 24px; }
.hidden { display: none; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 20px;
}

@media (max-width: 680px) {
  .page { padding-top: 30px; }
  .grid { grid-template-columns: 1fr; gap: 0; }
  .card { padding: 20px; border-radius: 14px; }
  .actions { align-items: stretch; flex-direction: column; }
}