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

:root {
    --primary: #38A169;
    --primary-dark: #2F855A;
    --primary-light: #C6F6D5;
    --neutral-900: #1A202C;
    --neutral-800: #2D3748;
    --neutral-700: #4A5568;
    --neutral-200: #E2E8F0;
    --neutral-100: #F7FAFC;
    --error: #E53E3E;
    --success: #38A169;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--neutral-100) 100%);
    min-height: 100vh;
    color: var(--neutral-800);
    line-height: 1.6;
}

.navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 10vw;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.container1 {
    display: flex;
    align-items: center;
    gap: 12px;
}

.container1 img {
    width: 50px;
    height: 40px;
    filter: drop-shadow(0 2px 2px rgba(0,0,0,0.1));
    transition: var(--transition);
}

.container1 img:hover {
    transform: scale(1.05);
}

.container1 a {
    text-decoration: none;
    font-size: 28px;
    font-weight: 700;
    color: var(--neutral-900);
    transition: var(--transition);
    letter-spacing: -0.5px;
}

.container1 a:hover {
    color: var(--primary);
}

.container2 {
    display: flex;
    gap: 16px;
}

.container2 a {
    text-decoration: none;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    font-family: 'Roboto', sans-serif;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.container2 a:first-child {
    border: 2px solid var(--primary);
    color: var(--primary);
    background-color: rgba(255, 255, 255, 0.7);
}

.container2 a:first-child:hover {
    background-color: rgba(56, 161, 105, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.container2 a:last-child {
    background-color: var(--primary);
    color: white;
    border: none;
    text-decoration: none;
}

.container2 a:last-child:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

main {
    display: flex;
    justify-content: center;
    padding: 40px 20px 60px;
}

.main {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0,0,0,0.05);
    transform: translateY(0);
    transition: var(--transition);
}

.main:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.main h1 {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--neutral-900);
    position: relative;
    padding-bottom: 10px;
}

.main h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 2px;
}

label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    display: block;
    color: var(--neutral-700);
}

input[type="text"],
input[type="password"] {
    width: 100%;
    height: 45px;
    background-color: var(--neutral-100);
    border-radius: var(--radius-sm);
    border: 1px solid var(--neutral-200);
    padding: 0 16px;
    margin-bottom: 15px;
    font-family: 'Roboto', sans-serif;
    font-size: 15px;
    transition: var(--transition);
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.2);
}

.forgot {
    text-align: right;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.forgot:hover {
    color: var(--primary);
    text-decoration: underline;
}

input[type="submit"] {
    width: 100%;
    background-color: var(--primary);
    color: white;
    border: none;
    height: 48px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    margin-top: 5px;
}

input[type="submit"]:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

input[type="submit"]:active {
    transform: translateY(0);
}

form div h3 {
    display: none;
    font-weight: 500;
    margin-bottom: 15px;
    font-family: 'Montserrat', sans-serif;
    color: white;
    background-color: var(--error);
    width: 100%;
    border-radius: var(--radius-sm);
    padding: 10px 15px;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
}

/* Show error message when it has content */
form div h3:not(:empty) {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .navigation {
        padding: 20px 5vw;
    }
    
    .main {
        padding: 30px;
    }
}

@media (max-width: 600px) {
    .navigation {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .container2 {
        align-self: flex-start;
    }

    .main {
        margin-top: 20px;
        padding: 25px;
        border-radius: var(--radius-md);
    }

    .main h1 {
        font-size: 24px;
        margin-bottom: 25px;
    }

    input[type="text"],
    input[type="password"] {
        height: 40px;
    }

    input[type="submit"] {
        height: 44px;
    }
    
    .forgot {
        font-size: 13px;
    }
}