:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #0b1220;
  --muted: #475569;
  --border: rgba(2, 6, 23, 0.12);
  --accent: #7c3aed;
  --accent2: #5b21b6;
}

html.dark {
  --bg: #0b0b10;
  --card: #12121a;
  --text: #f2f2f7;
  --muted: #b6b6c5;
  --border: rgba(255, 255, 255, 0.12);
  --accent: #a78bfa;
  --accent2: #7c3aed;
}

html {
  color-scheme: light;
}
html.dark {
  color-scheme: dark;
}
html.dark select option {
  background: #0b1220;
  color: #f8fafc;
}

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

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 18px 64px;
}

.page-start-project .wrap {
  max-width: 860px;
}

.page-thanks .wrap {
  max-width: 760px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.page-thanks .card,
.page-404 .card {
  padding: 22px;
}

h1 {
  margin: 0 0 6px;
  font-size: 28px;
  line-height: 1.15;
}

.page-404 h1 {
  margin-bottom: 10px;
  font-size: 42px;
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.6;
}

.hint,
.help,
.note,
.small {
  font-size: 12px;
  color: var(--muted);
}

.hint {
  margin-top: 10px;
}
.help {
  margin-top: 6px;
}
.note {
  margin-top: 12px;
  line-height: 1.5;
}
.small {
  margin-top: 14px;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 18px 0;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  margin: 14px 0;
}

legend {
  padding: 0 8px;
  color: var(--text);
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 820px) {
  .grid,
  .checks {
    grid-template-columns: 1fr;
  }
}

label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 2px 0 6px;
}

input,
select,
textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 12px 12px;
  border-radius: 12px;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(167, 139, 250, 0.65);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
}

textarea {
  min-height: 92px;
  resize: vertical;
}

.row {
  margin-top: 14px;
}

.checks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 6px;
}

.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.03);
}

.check input {
  width: auto;
  margin-top: 2px;
}

.actions,
.links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.btn,
.links a {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid rgba(124, 58, 237, 0.35);
  background: rgba(124, 58, 237, 0.18);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 12px;
  cursor: pointer;
}

.btn:hover,
.links a:hover {
  filter: brightness(1.03);
}

.btn.primary,
.links a.primary,
.page-form button.btn {
  background: linear-gradient(
    180deg,
    rgba(124, 58, 237, 0.95),
    rgba(124, 58, 237, 0.75)
  );
  color: #ffffff;
}

.btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.page-404 .wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.page-404 .card {
  max-width: 720px;
  width: 100%;
}

.page-404 .small {
  font-size: 13px;
}

.span-full {
  grid-column: 1 / -1;
}

.grid-top-gap {
  margin-top: 14px;
}

.mt-10 {
  margin-top: 10px;
}

.mt-12 {
  margin-top: 12px;
}

.mt-38 {
  margin-top: 38px;
}

.inline-flex {
  display: inline-flex;
}

.opacity-90 {
  opacity: 0.9;
}

.opacity-80 {
  opacity: 0.8;
}

.text-13 {
  font-size: 13px;
}

@media (max-width: 820px) {
  .checks {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 12px;
  }

  .check {
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }
}