:root {
  --bg: #f5fbff;
  --bg-2: #e8f3ff;
  --line: rgba(15, 126, 201, 0.12);
  --panel: rgba(255, 255, 255, 0.74);
  --text: #0d2438;
  --muted: #557087;
  --accent: #06b5a8;
  --accent-2: #1997ff;
  --danger: #d94163;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: radial-gradient(circle at 8% 18%, #d4ecff 0%, transparent 42%),
    radial-gradient(circle at 92% 82%, #d8fff5 0%, transparent 46%),
    linear-gradient(145deg, var(--bg) 0%, var(--bg-2) 100%);
  font-family: "Space Grotesk", sans-serif;
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 45%, black 35%, transparent 85%);
  z-index: 0;
}

.ambient {
  position: fixed;
  border-radius: 999px;
  filter: blur(80px);
  z-index: 0;
  animation: drift 10s ease-in-out infinite alternate;
}

.ambient-1 {
  width: 280px;
  height: 280px;
  background: rgba(25, 151, 255, 0.22);
  top: 10%;
  left: -80px;
}

.ambient-2 {
  width: 340px;
  height: 340px;
  background: rgba(6, 181, 168, 0.2);
  right: -120px;
  bottom: -60px;
  animation-delay: 1s;
}

.container {
  position: relative;
  z-index: 1;
  width: min(1040px, 92%);
  margin: 0 auto;
  padding: 70px 0 50px;
}

.hero {
  text-align: center;
  animation: rise 700ms ease-out both;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  font-weight: 700;
}

h1 {
  margin: 14px 0;
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.9rem, 4vw, 3.4rem);
  line-height: 1.15;
  text-shadow: 0 0 20px rgba(25, 151, 255, 0.22);
}

.subtitle {
  margin: 0 auto;
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.1rem);
}

.card {
  margin-top: 36px;
  padding: 28px;
  border: 1px solid rgba(56, 146, 198, 0.24);
  border-radius: 20px;
  background: var(--panel);
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 40px rgba(38, 86, 128, 0.18);
  animation: rise 800ms ease-out both;
  animation-delay: 80ms;
}

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

label {
  font-size: 0.92rem;
  color: #36556f;
}

.input-group {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(79, 144, 196, 0.32);
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  padding: 14px 16px;
  font-size: 0.98rem;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(6, 181, 168, 0.16);
}

button {
  border: none;
  border-radius: 12px;
  padding: 0 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-family: "Orbitron", sans-serif;
  cursor: pointer;
  color: #ffffff;
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 10px 24px rgba(25, 151, 255, 0.3);
  transition: transform 130ms ease, box-shadow 130ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 24px rgba(25, 151, 255, 0.42);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.status {
  min-height: 1.4rem;
  margin-top: 12px;
  color: #355771;
}

.status.error {
  color: var(--danger);
}

.status.success {
  color: var(--accent);
}

.features {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  animation: rise 900ms ease-out both;
  animation-delay: 130ms;
}

.features article {
  border: 1px solid rgba(80, 136, 170, 0.24);
  border-radius: 16px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.62);
}

.features h2 {
  margin: 0 0 8px;
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
}

.features p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.author {
  margin-top: 22px;
  text-align: center;
  color: #376483;
  font-size: 0.92rem;
  font-weight: 500;
}

@keyframes drift {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(16px, -18px) scale(1.06);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .features {
    grid-template-columns: 1fr;
  }

  .input-group {
    grid-template-columns: 1fr;
  }

  button {
    height: 48px;
  }

  .container {
    padding-top: 56px;
  }
}