@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-body: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-input: #1e293b;
  --bg-hover: #334155;
  --line: #334155;
  --line-light: #475569;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.3);
  --danger: #ef4444;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --transition: all 0.2s ease;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 24px;
}

.login-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-card);
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--bg-input), var(--bg-body));
  border: 1px solid var(--line);
  object-fit: cover;
  margin-bottom: 16px;
}

.login-brand h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-brand p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 4px 0 0 0;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-login {
  width: 100%;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  box-shadow: 0 4px 12px var(--primary-glow);
  margin-top: 8px;
}

.btn-login:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-login:active {
  transform: translateY(0);
}

.error-box {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: 20px;
  text-align: center;
}

.hidden {
  display: none !important;
}

@media (max-width: 480px) {
  .login-card {
    padding: 32px 20px;
  }
  .form-control {
    font-size: 16px; /* Prevents iOS zoom */
  }
}