:root {
  --border: rgba(99, 102, 241, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--indigo-400);
  outline-offset: 3px;
}

main {
  padding: 7.25rem 0 3rem;
}

.card {
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 22px;
  padding: 2rem;
  max-width: 980px;
  margin: 0 auto;
}

h1 {
  margin: 0 0 0.4rem;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.meta {
  margin: 0 0 1.5rem;
  color: rgba(165, 180, 252, 0.86);
  font-size: 0.95rem;
}

h2 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1.25rem;
}

h2[id],
h3[id] {
  scroll-margin-top: 7rem;
}

p {
  margin: 0.75rem 0;
  color: rgba(209, 213, 219, 0.95);
}

ul {
  margin: 0.6rem 0 0.9rem;
  padding-left: 1.25rem;
  color: rgba(209, 213, 219, 0.95);
}

li {
  margin: 0.35rem 0;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95em;
  color: var(--slate-300);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.92);
  padding: 2rem 0;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: flex-start;
  justify-content: space-between;
}

.footer-col {
  min-width: 220px;
}

.footer-title {
  margin: 0 0 0.5rem;
  font-weight: 800;
  color: rgba(165, 180, 252, 0.95);
  letter-spacing: -0.02em;
}

.footer-col a {
  display: inline-block;
  margin: 0.2rem 0;
  text-decoration: none;
  color: rgba(209, 213, 219, 0.92);
}

.footer-col a:hover {
  color: var(--white);
  text-decoration: underline;
}

.footer-bottom {
  margin-top: 1.5rem;
  color: rgba(148, 163, 184, 0.92);
  font-size: 0.9rem;
}

.form {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.field label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.45rem;
  color: rgba(165, 180, 252, 0.95);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.85rem 0.95rem;
  border-radius: 14px;
  border: 1px solid rgba(99, 102, 241, 0.28);
  background: rgba(2, 6, 23, 0.55);
  color: var(--white);
  font-size: 1rem;
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.help {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: rgba(148, 163, 184, 0.92);
}

.inline-link {
  color: rgba(165, 180, 252, 0.95);
}

.inline-link:hover {
  color: var(--white);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.25rem;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 800;
  background: linear-gradient(135deg, var(--indigo-600), #9333ea);
  color: var(--white);
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.25);
}

.btn-primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.notice {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  border: 1px solid rgba(99, 102, 241, 0.25);
  background: rgba(99, 102, 241, 0.12);
  color: rgba(209, 213, 219, 0.95);
}

.notice.error {
  border-color: rgba(244, 63, 94, 0.35);
  background: rgba(244, 63, 94, 0.12);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 680px) {
  .card {
    padding: 1.5rem;
  }
}