:root {
  --bg: #07111f;
  --bg-soft: #0d1b2f;
  --card: rgba(12, 22, 39, 0.82);
  --text: #f7fbff;
  --muted: #b7c5d8;
  --blue: #1c8cff;
  --blue-2: #67b3ff;
  --mint: #39d7b6;
  --purple: #8d7dff;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --max: 760px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at top right, rgba(103, 179, 255, 0.18), transparent 30%),
    radial-gradient(circle at bottom left, rgba(57, 215, 182, 0.14), transparent 28%),
    linear-gradient(180deg, #050c16 0%, #0a1526 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100%;
}

a {
  color: var(--blue-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 16px;
  background: rgba(7, 17, 31, 0.55);
  backdrop-filter: blur(10px);
}

.brand-mini {
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--muted);
}

.support-bubble,
.primary-button,
.cta-button,
.icon-button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.support-bubble {
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: white;
  box-shadow: var(--shadow);
}

.hero,
.confirm-shell,
.terms-shell {
  min-height: calc(100vh - 80px);
  display: grid;
  place-items: center;
  padding: 24px 16px 40px;
}

.hero-card,
.confirm-card,
.terms-card {
  width: 100%;
  max-width: var(--max);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 28px 20px;
}

.hero-card {
  text-align: center;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 9vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.subheading {
  margin: 12px 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

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

.cta-button,
.primary-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 54px;
  padding: 14px 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--blue), var(--mint));
  color: #04111f;
  font-weight: 800;
  box-shadow: var(--shadow);
  text-decoration: none;
}

.primary-button:hover,
.cta-button:hover {
  text-decoration: none;
  opacity: 0.95;
}

.how-it-works {
  margin-top: 34px;
  text-align: left;
}

.how-it-works h2,
.summary-box h2,
.terms-card h2 {
  font-size: 1.08rem;
  margin: 0 0 12px;
}

.steps {
  display: grid;
  gap: 12px;
}

.step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.step-number {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--purple));
}

.step h3 {
  margin: 2px 0 4px;
  font-size: 1rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  padding: 20px 16px 34px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.summary-box {
  margin: 22px 0 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.summary-box p {
  margin: 0 0 12px;
  color: var(--text);
}

.summary-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.summary-list div {
  display: grid;
  gap: 3px;
}

.summary-list dt {
  color: var(--muted);
  font-size: 0.84rem;
}

.summary-list dd {
  margin: 0;
  font-weight: 600;
}

.stack {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-size: 0.94rem;
}

input[type="text"],
input[type="file"],
textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  padding: 14px;
  font: inherit;
}

textarea {
  resize: vertical;
}

.checkbox-row {
  grid-template-columns: 20px 1fr;
  align-items: start;
  gap: 10px;
}

.checkbox-row input {
  margin-top: 4px;
}

.form-note {
  min-height: 20px;
  margin: 0;
  color: var(--mint);
  font-size: 0.9rem;
}

.modal.hidden {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 8, 15, 0.72);
}

.modal-panel {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100%;
  max-width: 560px;
  background: #0d1b2f;
  border-top-left-radius: 24px;
  border-top-right-radius: 24px;
  border: 1px solid var(--border);
  padding: 18px 16px 24px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.icon-button {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  color: white;
  font-size: 1.5rem;
}

.terms-card section {
  margin: 18px 0;
}

.terms-card p {
  color: var(--muted);
  line-height: 1.6;
}

.text-link {
  font-weight: 700;
}

@media (min-width: 768px) {
  .hero-card,
  .confirm-card,
  .terms-card {
    padding: 40px 34px;
  }

  .cta-button {
    width: auto;
    min-width: 260px;
    margin-inline: auto;
  }

  .modal-panel {
    top: 50%;
    bottom: auto;
    transform: translate(-50%, -50%);
    border-radius: 24px;
  }
}