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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1C1C2E 0%, #2296F3 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-container {
    background: #1C1C2E;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    padding: 50px 40px;
    width: 100%;
    max-width: 400px;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    text-align: center;
    margin-bottom: 40px;
}

.logo h1 {
    color: #2296F3;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
}

.logo p {
    color: #888;
    font-size: 14px;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    color: #2296F3;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

input {
    width: 100%;
    padding: 14px 18px;
    background: #2A2A3E;
    border: 2px solid transparent;
    border-radius: 10px;
    color: #fff;
    font-size: 15px;
    transition: all 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #2296F3;
    background: #323244;
}

input::placeholder {
    color: #666;
}

.btn-login {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #2296F3 0%, #1976D2 100%);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(34, 150, 243, 0.3);
}

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

.error-message {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid rgba(244, 67, 54, 0.3);
    color: #f44336;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
    font-size: 14px;
}

.error-message.show {
    display: block;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.credentials-hint {
    background: rgba(34, 150, 243, 0.1);
    border: 1px solid rgba(34, 150, 243, 0.3);
    color: #2296F3;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    font-size: 13px;
    line-height: 1.6;
}

.credentials-hint strong {
    display: block;
    margin-bottom: 5px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-container input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
}

.checkbox-container label {
    color: #888;
    font-size: 13px;
    font-weight: 400;
    margin: 0;
}