body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: radial-gradient(circle at top, #0f172a 0%, #020617 60%, #000 100%);
  color: white;
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 20px;
  text-align: center;
}

.logo-area { margin-bottom: 30px; }

.main-logo { max-width: 420px; width: 100%; }

h1 { margin: 10px 0; font-size: 2.6rem; }

.subtitle { color: #94a3b8; margin-bottom: 40px; }

.card {
  background: linear-gradient(145deg, #0b1020, #050816);
  border-radius: 18px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,.8);
  margin-bottom: 30px;
}

.form-inner {
  max-width: 520px;
  margin: 0 auto;
  text-align: left;
}

label {
  display: block;
  margin: 12px 0 6px;
  color: #cbd5f5;
}

.helper {
  display: block;
  font-size: 0.75rem;
  color: #93c5fd;
  margin-bottom: 6px;
}

input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: none;
  font-size: 16px;
  box-sizing: border-box;
}

.currency-input {
  text-align: left;
}

button {
  width: 100%;
  margin-top: 25px;
  padding: 14px;
  font-size: 18px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(to right, #2563eb, #3b82f6);
  color: white;
  cursor: pointer;
}

button:hover { opacity: .9; }

.results {
  font-size: 1.15rem;
}

.results-intro {
  font-size: 0.9rem;
  color: #93c5fd;
  margin-bottom: 10px;
}

.coach-card {
  background: linear-gradient(145deg, #020617, #020617);
  border-top: 3px solid #2563eb;
}

.coach-text {
  font-style: italic;
  font-size: 0.95rem;
  color: #cbd5f5;
}

.error-message {
  min-height: 18px;
  margin-top: 10px;
  font-size: 0.9rem;
  color: #f97373;
}

.hidden { display: none; }

@media (max-width: 700px) {
  .card { padding: 28px 20px; }
  .form-inner { max-width: 100%; }
}