:root {
  --primary: #0ea5e9;         
  --secondary: #22c55e;        
  --bg: #f4f7fb;
  --card-bg: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e5e7eb;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

body.dark {
  --bg: #020617;
  --card-bg: #020617;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: #1e293b;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", system-ui, sans-serif;
}

body {
  background: linear-gradient(
    135deg,
    var(--primary),
    var(--secondary)
  );
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.auth-wrapper {
  width: 100%;
  padding: 20px;
  display: flex;
  justify-content: center;
}

.auth-card {
  background: var(--card-bg);
  width: 100%;
  max-width: 420px;
  padding: 32px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  animation: slideUp 0.6s ease;
}
.auth-header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-header h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 6px;
}

.auth-header p {
  color: var(--muted);
  font-size: 14px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.form-group input {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  outline: none;
  font-size: 14px;
  transition: 0.3s;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-options {
  display: flex;
  align-items: center;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary),
    var(--secondary)
  );
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
}
.auth-footer {
  margin-top: 18px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.auth-footer a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (max-width: 480px) {
  .auth-card {
    padding: 24px;
  }

  .auth-header h1 {
    font-size: 24px;
  }
}