/* reset & variables */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --secondary: #06b6d4;
  --bg-dark: #0f172a;
  --container-bg: #1e293b;
  --text-light: #f1f5f9;
  --text-gray: #94a3b8;
  --border-color: #334155;
  --input-bg: #1e293b;
}

body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg-dark);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-light);
}

/* container */
.signup-container {
  background: var(--container-bg);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: 400px;
  width: 90%;
  border: 1px solid var(--border-color);
}

.icon-container { margin-bottom: 1.5rem; font-size: 2.5rem; color: var(--primary); }
h2 { margin-bottom: 0.75rem; color: var(--text-light); font-weight: 600; font-size: 1.5rem; }
p { font-size: 0.95rem; color: var(--text-gray); line-height: 1.5; margin-bottom: 1.5rem; }

/* form */
.input-group { margin-bottom: 1rem; position: relative; }

.input-group i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-gray);
}

input {
  width: 100%;
  padding: 0.85rem 0.85rem 0.85rem 2.5rem;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  color: var(--text-light);
  font-size: 1rem;
  transition: all 0.3s ease;
  border-radius: 8px;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

input::placeholder { color: var(--text-gray); opacity: 0.7; }

/* button */
button {
  width: 100%;
  padding: 0.85rem;
  background: var(--primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

button:hover { background: var(--primary-dark); transform: translateY(-2px); }
button i { font-size: 0.9rem; transition: transform 0.3s ease; }
button:hover i { transform: translateX(3px); }

/* benefits */
.benefits {
  margin-top: 1.5rem;
  text-align: left;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.benefit-item { display: flex; align-items: center; gap: 8px; margin-bottom: 0.5rem; font-size: 0.9rem; }
.benefit-item i { color: var(--secondary); font-size: 0.8rem; }

/* responsive */
@media (max-width: 500px) {
  .signup-container { padding: 2rem 1.5rem; }
}