:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #64748b;
  --text-color: #1e293b;
  --text-light: #64748b;
  --bg-color: #ffffff;
  --bg-secondary: #f8fafc;
  --border-color: #e2e8f0;
  --gradient-start: #2563eb;
  --gradient-end: #133275;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--primary-color);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

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

.login-header h1 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-light);
    font-size: 14px;
}

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

.login-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
}

.login-form input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    padding: 4px;
    transition: color 0.2s;
}

.toggle-password:hover {
    color: var(--primary-color);
}

.form-error {
    background: #fef2f2;
    color: #dc2626;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 16px;
    display: none;
}

.form-error.show {
    display: block;
}

.login-button {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4);
}

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

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.back-button:hover {
    text-decoration: underline;
}