:root {
  --blue-50: #f2fbff;
  --blue-100: #dff5ff;
  --blue-200: #b9eaff;
  --blue-300: #78d6ff;
  --blue-500: #15a7ee;
  --blue-700: #0876b1;
  --white: #ffffff;
  --ink: #17324d;
  --muted: #62758a;
  --line: rgba(21, 167, 238, 0.20);
  --shadow: 0 24px 70px rgba(8, 118, 177, 0.16);
  --radius: 26px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, rgba(120, 214, 255, 0.55), transparent 30rem),
    radial-gradient(circle at 85% 20%, rgba(185, 234, 255, 0.7), transparent 27rem),
    linear-gradient(180deg, var(--blue-50), #ffffff 58%, var(--blue-100));
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .38;
  background-image:
    linear-gradient(rgba(21, 167, 238, .10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 167, 238, .10) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

.sky-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(10px);
  opacity: .35;
  pointer-events: none;
  animation: drift 10s ease-in-out infinite alternate;
}

.sky-orb-one {
  width: 16rem;
  height: 16rem;
  left: -5rem;
  top: 12rem;
  background: var(--blue-300);
}

.sky-orb-two {
  width: 22rem;
  height: 22rem;
  right: -8rem;
  top: 2rem;
  background: var(--blue-200);
  animation-delay: -3s;
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(1rem, 1.5rem, 0) scale(1.05); }
}

.site-header {
  width: min(1120px, calc(100% - 32px));
  margin: 20px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  font-weight: 900;
  color: white;
  letter-spacing: -0.06em;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-300));
  box-shadow: 0 14px 32px rgba(21, 167, 238, .28);
}

.brand strong,
.brand small { display: block; }

.brand strong { line-height: 1.05; }
.brand small { color: var(--muted); font-size: .78rem; margin-top: 2px; }

.nav-link {
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue-700);
  background: rgba(255, 255, 255, .72);
  text-decoration: none;
  font-weight: 800;
  backdrop-filter: blur(12px);
}

.shell {
  width: min(980px, calc(100% - 32px));
  margin: 42px auto 60px;
  position: relative;
  z-index: 1;
}

.card {
  border: 1px solid rgba(255, 255, 255, .92);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  padding: clamp(28px, 5vw, 54px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -60% auto;
  width: 28rem;
  height: 28rem;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(120,214,255,.36), transparent 62%);
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--blue-700);
  font-size: .77rem;
  font-weight: 900;
}

h1, h2 { margin: 0; letter-spacing: -0.055em; }
h1 { font-size: clamp(2.5rem, 7vw, 5.5rem); line-height: .92; }
h2 { font-size: clamp(1.55rem, 4vw, 2.35rem); }

.subtitle {
  margin: 18px 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.65;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.pill {
  padding: 9px 12px;
  border-radius: 999px;
  background: var(--blue-100);
  border: 1px solid var(--line);
  color: var(--blue-700);
  font-weight: 800;
  font-size: .88rem;
}

.cube-card {
  width: clamp(130px, 22vw, 220px);
  aspect-ratio: 1;
  border-radius: 38px;
  display: grid;
  place-items: center;
  color: white;
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3rem);
  background: linear-gradient(135deg, var(--blue-500), var(--blue-300));
  box-shadow: 0 30px 80px rgba(21, 167, 238, .30);
  transform: rotate(5deg);
  position: relative;
  isolation: isolate;
}

.cube-card::before,
.cube-card::after {
  content: "";
  position: absolute;
  border-radius: 24px;
  background: rgba(255,255,255,.22);
  z-index: -1;
}
.cube-card::before { inset: 16px 26px auto 26px; height: 18px; }
.cube-card::after { inset: auto 28px 24px auto; width: 40px; height: 40px; }

.form-card { margin-top: 24px; padding: clamp(22px, 4vw, 38px); }

.section-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 24px;
}

.section-title p { margin: 8px 0 0; color: var(--muted); }
.required, .field b { color: var(--blue-700); }

.grid {
  display: grid;
  gap: 18px;
}
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.field {
  display: grid;
  gap: 9px;
  margin-bottom: 18px;
}

.field span,
.field legend {
  font-weight: 900;
  color: #24415e;
}

.field em,
.field small {
  color: var(--muted);
  font-style: normal;
  font-weight: 600;
}

input[type="text"],
input[type="url"],
input[type="password"] {
  width: 100%;
  border: 1px solid rgba(21, 167, 238, .24);
  background: rgba(255,255,255,.92);
  border-radius: 18px;
  padding: 15px 16px;
  color: var(--ink);
  font: inherit;
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

input:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 5px rgba(21, 167, 238, .12);
}

.fieldset {
  border: 1px solid rgba(21, 167, 238, .20);
  background: rgba(242, 251, 255, .72);
  border-radius: 22px;
  padding: 18px;
}

.fieldset legend { padding: 0 8px; }

.checks,
.radios {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.checks label,
.radios label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: white;
  border: 1px solid var(--line);
  color: #31516f;
  font-weight: 800;
  cursor: pointer;
}

input[type="checkbox"],
input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--blue-500);
}

.help-box {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(255,255,255,.72);
  margin: 8px 0 20px;
}

.help-box summary { cursor: pointer; font-weight: 900; color: var(--blue-700); }
.help-box p { color: var(--muted); line-height: 1.6; margin-bottom: 0; }

.message {
  min-height: 0;
  margin: 10px 0;
  color: var(--blue-700);
  font-weight: 800;
}
.message.error { color: #b42318; }
.message.success { color: #087443; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }

.btn.primary {
  color: white;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-300));
  box-shadow: 0 14px 30px rgba(21, 167, 238, .25);
}

.btn.ghost {
  color: var(--blue-700);
  background: white;
  border: 1px solid var(--line);
}

.btn.danger {
  color: #b42318;
  background: #fff5f5;
  border: 1px solid rgba(180, 35, 24, .18);
}

.footer {
  text-align: center;
  color: var(--muted);
  margin: 40px 16px;
  font-weight: 700;
}

.hidden { display: none !important; }
.admin-shell { max-width: 1120px; }
.admin-hero h1 { font-size: clamp(2.2rem, 6vw, 4.4rem); }
.login-form { max-width: 560px; }
.dashboard-title { align-items: center; }
.slim-actions { justify-content: flex-end; }

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

.response-card {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.88);
  border-radius: 22px;
  padding: 18px;
}

.response-top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
  align-items: start;
}

.response-top h3 {
  margin: 0;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.response-top time {
  color: var(--muted);
  font-size: .85rem;
  font-weight: 800;
  white-space: nowrap;
}

.response-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.data-item {
  border: 1px solid rgba(21,167,238,.12);
  border-radius: 16px;
  background: var(--blue-50);
  padding: 11px 12px;
  min-width: 0;
}

.data-item strong {
  display: block;
  color: var(--blue-700);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
}

.data-item span,
.data-item a {
  color: #24415e;
  overflow-wrap: anywhere;
  font-weight: 750;
}

.empty-state {
  border: 1px dashed rgba(21, 167, 238, .35);
  border-radius: 20px;
  padding: 24px;
  color: var(--muted);
  background: rgba(242, 251, 255, .75);
  font-weight: 700;
}

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; }
  .cube-card { display: none; }
  .grid.two, .response-grid { grid-template-columns: 1fr; }
  .section-title, .response-top { display: block; }
  .slim-actions { justify-content: start; margin-top: 16px; }
  .site-header { width: min(100% - 24px, 1120px); }
  .shell { width: min(100% - 24px, 980px); margin-top: 28px; }
}