:root {
    --primary-black: #000000;
    --secondary-black: #1a1a1a;
    --gray: #333333;
    --light-gray: #f8f9fa;
    --white: #ffffff;
}

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

body {
    background-color: var(--white);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background-color: var(--white);
    border: 2px solid var(--primary-black);
    border-radius: 0;
    padding: 30px 20px;
    box-shadow: 4px 4px 0 var(--primary-black);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-black);
    margin-bottom: 8px;
}

.login-header p {
    font-size: 14px;
    color: var(--gray);
}

.form-label {
    font-weight: 600;
    color: var(--primary-black);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-control {
    border: 2px solid var(--primary-black);
    border-radius: 0;
    padding: 12px 16px;
    font-size: 16px;
    background-color: var(--white);
    color: var(--primary-black);
    min-height: 48px;
}

.form-control:focus {
    border-color: var(--primary-black);
    box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
    background-color: var(--white);
    outline: none;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-black);
    color: var(--white);
    border: 2px solid var(--primary-black);
    border-radius: 0;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    min-height: 48px;
}

.btn-login:hover {
    background-color: var(--white);
    color: var(--primary-black);
    transform: translate(2px, 2px);
}

.btn-login:active {
    transform: translate(4px, 4px);
}

/* Tablet and Desktop enhancements */
@media (min-width: 577px) {
    body {
        padding: 20px;
    }

    .login-card {
        padding: 40px 30px;
        box-shadow: 8px 8px 0 var(--primary-black);
    }

    .login-header h1 {
        font-size: 28px;
    }
}

/* Header Navigation */
.header-nav {
    display: none;
    gap: 5px;
    margin: 0 15px;
    align-items: center;
}

.nav-link {
    padding: 8px 16px;
    text-decoration: none;
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
    cursor: pointer;
}

.nav-link:hover {
    border-color: var(--white);
}

.nav-link.active {
    background: var(--white);
    color: var(--primary-black);
    border-color: var(--white);
}

/* Dropdown Navigation */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown .nav-link {
    display: flex;
    align-items: center;
}

.nav-dropdown .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border: 2px solid var(--primary-black);
    min-width: 200px;
    z-index: 1000;
    margin-top: 2px;
}

.nav-dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--primary-black);
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--light-gray);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: var(--light-gray);
}

.dropdown-item.active {
    background: var(--primary-black);
    color: var(--white);
}

/* Show navigation on tablets and larger */
@media (min-width: 768px) {
    .header-nav {
        display: flex;
    }
    
    .header-content h1 {
        flex: 0 !important;
        margin-right: auto;
    }
}