* {
  box-sizing: border-box;
}

:root {
  --bg: #0f172a;
  --card: rgba(255, 255, 255, 0.08);
  --text: #f8fafc;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --secondary: #818cf8;
  --success: #22c55e;
  --danger: #ef4444;
  --border: rgba(255, 255, 255, 0.15);
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top left, #1e3a8a, transparent 35%),
    radial-gradient(circle at bottom right, #312e81, transparent 35%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(15, 23, 42, 0.75);
  border-bottom: 1px solid var(--border);
  padding: 16px 8%;
  display: flex;
  align-items: center;
  gap: 22px;
}

nav h2 {
  margin-right: auto;
  font-size: 24px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  color: transparent;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

nav a:hover {
  color: var(--primary);
}

.hero {
  text-align: center;
  padding: 100px 20px 60px;
}

.hero h1 {
  font-size: clamp(38px, 7vw, 72px);
  margin-bottom: 15px;
  background: linear-gradient(135deg, #fff, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  color: transparent;
}

.hero p {
  color: var(--muted);
  font-size: 18px;
  max-width: 650px;
  margin: 0 auto 35px;
}

.btn,
button {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border: none;
  padding: 13px 20px;
  border-radius: 14px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.25);
  transition: 0.3s ease;
}

.btn:hover,
button:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(129, 140, 248, 0.35);
}

.container {
  max-width: 1100px;
  margin: 35px auto;
  padding: 20px;
}

.container h1,
.container h2 {
  margin-bottom: 25px;
}

form,
.card,
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(18px);
  padding: 24px;
  border-radius: 22px;
  margin-bottom: 22px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

input,
select,
textarea {
  width: 100%;
  margin: 10px 0;
  padding: 14px 15px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.7);
  color: var(--text);
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: #64748b;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.stats {
  max-width: 1050px;
  margin: 45px auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

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

.stat-card h2 {
  font-size: 38px;
  color: var(--primary);
  margin: 0 0 8px;
}

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

.card {
  transition: 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.45);
}

.card h3 {
  margin-top: 0;
  font-size: 24px;
}

.card p {
  color: #cbd5e1;
  line-height: 1.6;
}

.card span {
  display: inline-block;
  background: rgba(56, 189, 248, 0.13);
  color: var(--primary);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 7px 12px;
  border-radius: 999px;
  margin: 5px 7px 5px 0;
  font-size: 13px;
  font-weight: 700;
}

.reply {
  margin-top: 18px;
  background: rgba(34, 197, 94, 0.12);
  padding: 16px;
  border-left: 5px solid var(--success);
  border-radius: 14px;
}

.reply strong {
  color: var(--success);
}

.no-reply {
  color: var(--muted);
  font-style: italic;
}

#message {
  font-weight: 700;
  margin-top: 15px;
}

@media (max-width: 700px) {
  nav {
    flex-wrap: wrap;
    padding: 15px 20px;
  }

  nav h2 {
    width: 100%;
    margin-bottom: 5px;
  }

  .hero {
    padding-top: 70px;
  }

  .container {
    margin: 20px auto;
  }
}