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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.login-box {
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    padding: 48px 40px;
    text-align: center;
}

.logo {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

h1 {
    color: #1a1a1a;
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.subtitle {
    color: #6c757d;
    font-size: 14px;
    margin-bottom: 36px;
    font-weight: 400;
}

.login-form {
    text-align: left;
}

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

.form-group label {
    display: block;
    color: #495057;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.2s ease;
    outline: none;
    background: #f8f9fa;
}

.form-group input:focus {
    border-color: #0066CC;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group input::placeholder {
    color: #adb5bd;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #495057;
}

.checkbox input {
    margin-right: 8px;
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: #0066CC;
}

.forgot-link {
    font-size: 14px;
    color: #0066CC;
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover {
    text-decoration: underline;
}

.error-msg {
    color: #dc3545;
    font-size: 14px;
    margin-bottom: 16px;
    min-height: 20px;
    text-align: center;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: #0066CC;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-login:hover {
    background: #0052a3;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-login:active {
    transform: scale(0.98);
}

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

.footer {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.footer p {
    color: #adb5bd;
    font-size: 12px;
}

@media (max-width: 480px) {
    .login-box {
        padding: 36px 24px;
    }

    h1 {
        font-size: 22px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}