:root {
  --bg: #0d0f12;
  --card: #1f242a;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --error-bg: #f87171;
  --text: #e5e7eb;
  --subtext: #9ca3af;
  --input-bg: #11171f;
  --input-border: #2c3138;
  --radius: 0.75rem;
  --shadow: 0 10px 30px rgba(0,0,0,0.3);
  --transition: 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

.login-wrapper {
  width: 100%;
  max-width: 400px;
  padding: 1rem;
}

.login-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-title {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
  color: var(--accent);
}

.alert {
  display: flex;
  align-items: center;
  background: var(--error-bg);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

.alert .icon {
  width: 1.25rem;
  height: 1.25rem;
  margin-right: 0.5rem;
  fill: #fff;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--subtext);
  font-size: 0.9rem;
}

.form-group input[type="text"],
.form-group input[type="password"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  transition: border-color var(--transition);
}

.form-group input::placeholder {
  color: var(--subtext);
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

/* Remember-Me Styles */
.remember-me {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.remember-me input[type="checkbox"] {
  transform: scale(1.2);
  margin: 0;
  padding: 0;
  cursor: pointer;
}

.remember-me label {
  cursor: pointer;
  color: var(--text);
  user-select: none;
}

.btn {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  cursor: pointer;
  transition: background-color var(--transition), transform 0.1s var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

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