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

body {
    font-family: Arial, sans-serif;
    background-color: #f7f7f7;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

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

.login-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 40px 35px;
}

.logo-section {
    text-align: center;
    margin-bottom: 35px;
}

.logo {
    width: 64px;
    height: 64px;
    margin-bottom: 15px;
}

.logo-section h1 {
    font-size: 28px;
    color: #5a6c7d;
    font-weight: 500;
    margin: 0;
}

.form-group {
    margin-bottom: 18px;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: #999;
    pointer-events: none;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px 45px 12px 15px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.2s;
    color: #374151;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input::placeholder {
    color: #9ca3af;
}

.btn-signin {
    width: 100%;
    padding: 13px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 8px;
}

.btn-signin:hover {
    background-color: #218838;
}

.btn-signin:active {
    background-color: #1e7e34;
}

.alert {
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.5;
}

.alert-success {
    background-color: #d1fae5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.footer-text {
    text-align: center;
    margin-top: 25px;
    font-size: 13px;
    color: #6b7280;
}

.footer-text a {
    color: #667eea;
    text-decoration: none;
}

.footer-text a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 25px;
    }
    
    .logo-section h1 {
        font-size: 24px;
    }
}