:root {
    --primary-color: #4361ee;
    --primary-hover: #3a56d4;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --error-color: #ff3860;
    --success-color: #09c372;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-gray);
    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-radius: 10px;
    box-shadow: var(--shadow);
    padding: 40px;
    width: 100%;
    transition: var(--transition);
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo-icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.logo-container h1 {
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 5px;
}

.logo-container p {
    color: #666;
    font-size: 14px;
}

.input-group {
    position: relative;
    margin-bottom: 25px;
}

.input-group .icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 16px;
}

.input-group input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: var(--transition);
    outline: none;
}

.input-group input:focus {
    border-color: var(--primary-color);
}

.input-group input:focus + label,
.input-group input:valid + label {
    top: -10px;
    left: 35px;
    font-size: 12px;
    background: white;
    padding: 0 5px;
    color: var(--primary-color);
}

.input-group label {
    position: absolute;
    left: 45px;
    top: 15px;
    color: #999;
    font-size: 15px;
    transition: var(--transition);
    pointer-events: none;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    cursor: pointer;
    font-size: 16px;
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    font-size: 14px;
}

.remember-forgot label {
    display: flex;
    align-items: center;
    color: #666;
}

.remember-forgot input {
    margin-right: 8px;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.login-btn {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.login-btn:hover {
    background-color: var(--primary-hover);
}

.divider {
    display: flex;
    align-items: center;
    margin: 20px 0;
    color: #999;
    font-size: 14px;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 10px;
}

.social-login {
    display: flex;
    gap: 15px;
}

.social-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-btn i {
    margin-right: 8px;
}

.social-btn.google {
    background-color: #db4437;
    color: white;
}

.social-btn.google:hover {
    background-color: #c1351b;
}

.social-btn.facebook {
    background-color: #4267B2;
    color: white;
}

.social-btn.facebook:hover {
    background-color: #365899;
}

.register-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #666;
}

.register-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.register-link a:hover {
    text-decoration: underline;
}

/* Responsive styles */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }

    .logo-icon {
        font-size: 35px;
    }

    .logo-container h1 {
        font-size: 22px;
    }

    .social-login {
        flex-direction: column;
    }

    .divider span {
        padding: 0 5px;
    }
}

/* Error styles */
.input-group.error input {
    border-color: var(--error-color);
}

.input-group.error label {
    color: var(--error-color);
}

.error-message {
    color: var(--error-color);
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.input-group.error .error-message {
    display: block;
}