:root {
  --bg: #0f1419;
  --bg-elevated: #171e26;
  --surface: #1e2732;
  --border: #2c3847;
  --text: #eef2f6;
  --muted: #9aa8b8;
  --accent: #c4a35a;
  --accent-hover: #d4b56e;
  --danger: #e07a6a;
  --success: #6fbf8f;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Instrument Serif", Georgia, serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(196, 163, 90, 0.16), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(90, 140, 180, 0.12), transparent 50%),
    linear-gradient(180deg, #121820 0%, var(--bg) 40%, #0c1015 100%);
  line-height: 1.55;
}

.page {
  width: min(760px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.brand {
  text-align: center;
}

.brand__name {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  letter-spacing: 0.02em;
  line-height: 1;
}

.brand__tag {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.shell {
  flex: 1;
}

.panel {
  background: color-mix(in srgb, var(--surface) 92%, black);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.4rem, 3vw, 2rem);
  animation: rise 320ms ease-out;
}

.panel--error {
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
}

.panel--success {
  border-color: color-mix(in srgb, var(--success) 40%, var(--border));
}

h1 {
  margin: 0 0 0.65rem;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.35rem);
  font-weight: 400;
  line-height: 1.15;
}

.muted {
  margin: 0;
  color: var(--muted);
}

.meta {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.form {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field span {
  font-size: 0.875rem;
  color: var(--muted);
}

.field input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  font: inherit;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.field input:focus {
  border-color: color-mix(in srgb, var(--accent) 70%, var(--border));
  box-shadow: 0 0 0 3px rgba(196, 163, 90, 0.18);
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #1a1408;
  font: inherit;
  font-weight: 600;
  padding: 0.9rem 1.25rem;
  cursor: pointer;
  transition: background 150ms ease, transform 150ms ease;
}

.btn:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.form-error {
  margin: 0;
  color: var(--danger);
  font-size: 0.9rem;
}

.terms-header {
  margin-bottom: 1.25rem;
}

.terms-list {
  display: grid;
  gap: 1rem;
  max-height: min(52vh, 520px);
  overflow: auto;
  padding-right: 0.35rem;
  margin-bottom: 0.25rem;
}

.term-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.1rem;
}

.term-card h2 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.term-card .body {
  margin: 0;
  white-space: pre-wrap;
  color: color-mix(in srgb, var(--text) 88%, var(--muted));
  font-size: 0.95rem;
}

.accept-form {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  margin-top: 1.25rem;
}

.check {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  cursor: pointer;
  color: var(--text);
}

.check input {
  margin-top: 0.25rem;
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}

.footer {
  text-align: center;
  color: color-mix(in srgb, var(--muted) 80%, transparent);
  font-size: 0.8rem;
}

.footer p {
  margin: 0;
}

[hidden] {
  display: none !important;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 560px) {
  .page {
    width: min(100% - 1.25rem, 760px);
    padding-top: 1.5rem;
  }

  .terms-list {
    max-height: 45vh;
  }
}