:root{
    /* Brand colors */
    --color-primary: #274C77;
    --color-primary-dark: #172A3A;
    --color-accent: #C99A32;

    /* Surface colors */
    --color-background: #E8E9E6;
    --color-surface: #F7F7F4;

    /* Text colors */
    --color-text: #202428;
    --color-text-secondary: #555D63;
    --color-text-muted: #92989C;
    --color-text-light: #E2E5E6;

    /* Interface colors */
    --color-border: #C5C9CA;
    
    --font-size-xs: 14px;
    --font-size-sm: 15px;
    --font-size-md: 18px;
    --font-size-lg: 22px;
    --font-size-lg-plus: 24px;
    --font-size-xl: 32px;
    --font-size-xl-plus: 36px;
    --font-size-xxl: 48px;

    --font-weight-regular: 400;
    --font-weight-semibold: 600;

    --spacing-xs: 10px;
    --spacing-sm: 20px;
    --spacing-md: 30px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-xxl: 80px;
}

html{
    scroll-behavior: smooth;
}

body{
    margin: 0;
    background-color: var(--color-background);
    font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
    color: var(--color-text);
    line-height: 1.5;
}

section{
    scroll-margin-top: var(--spacing-xxl);
}

header{
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-background);
    background-color: var(--color-surface);
}

header .container{
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

header h1{
    margin: 0;
    font-size: var(--font-size-lg-plus);
    font-weight: var(--font-weight-semibold);
    letter-spacing: -0.5px;
    color: var(--color-primary);
}

.header-brand{
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-logo{
    width: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    font-family: Arial, Helvetica, sans-serif;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 1px;
    box-sizing: border-box;
}

header h1 a{
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

header h1 a:hover{
    color: var(--color-accent);
}

nav{
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    width: 100%;
}

nav a{    
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    text-decoration:  none;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: color 0.2s ease, border-color 0.2s ease;
}

nav a:hover{
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.hero{
    min-height: 500px;
    padding: var(--spacing-xxl) 0;
    display: flex;
    align-items: center;
    background-color: var(--color-primary);
    color: var(--color-surface);
    box-sizing: border-box;
}

.hero .container{
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content{
    width: 55%;
}

.hero-visual{
    width: 35%;
    min-height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo{
    display: block;
    width: 100%;
    max-width: 420px;
    height: auto;
    object-fit: contain;
}

.hero h2 {
    max-width: 650px;
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xxl);
    font-weight: var(--font-weight-semibold);
    line-height: 1.1;
}

.hero p{
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-md);
    line-height: 1.6;
}

.hero a {
    display: inline-block;
    width: fit-content;
    padding: 12px var(--spacing-sm);
    border: 1px solid var(--color-surface);
    color: var(--color-surface);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.hero a:hover{
    background-color: var(--color-surface);
    color: var(--color-primary);
    transform: translateY(-2px);
}
.container{
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.company{
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-surface);
}

.company .container{
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.company-content{
    width: 60%;
    max-width: 700px;
}

.company-highlights{
    width: 30%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.company-highlight{
    padding-left: var(--spacing-sm);
    border-left: 2px solid var(--color-accent);
}

.company-highlight h3{
    margin: 0 0 var(--spacing-xs) 0;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.company-highlight p{
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.company h2{
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.company-introduction{
    max-width: 700px;
    margin: 0;
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text-secondary); 
}

.company-description{
    max-width: 700px;
    margin: var(--spacing-sm) 0 0 0;
    font-size: var(--font-size-sm);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.solutions{
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background);
}

.solutions-header{
    max-width: 700px;
    margin-bottom: var(--spacing-lg);
}

.solutions h2{
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.solutions-introduction{
    max-width: 700px;
    margin: 0;
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.solutions-list{
    display: flex;
    gap: var(--spacing-md);
}

.solution{
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    transition: transform 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
}

.solution:hover{
    border-color: var(--color-accent);
    transform: translateY(-3px);
}

.solution h3{
    margin: 0 0 var(--spacing-xs) 0;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.solution p{
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.projects{
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-surface);
}

.projects-header{
    max-width: 700px;
    margin-bottom: var(--spacing-lg);
}

.projects h2{
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.projects-introduction{
    max-width: 700px;
    margin: 0;
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.downloads{
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background);
}

.downloads-header{
    max-width: 700px;
    margin-bottom: var(--spacing-lg);
}

.downloads h2{
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.downloads-introduction{
    max-width: 700px;
    margin: 0;
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.downloads-list{
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.download-item{
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.download-content{
    flex: 1;
}

.download-item h3{
    margin: 0 0 var(--spacing-xs) 0;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.download-item p{
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.download-item > a{
    display: inline-block;
    padding: 12px var(--spacing-sm);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.download-item > a:hover{
    background-color: var(--color-primary);
    color: var(--color-surface);
}

.contact{
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-primary);
    color: var(--color-surface);
}

.contact h2{
    margin-top: 0;
    font-size: var(--font-size-xl);
}

.contact p{
    max-width: 700px;
    font-size: var(--font-size-md);
    line-height: 1.6;
}

.contact a{
    color: var(--color-surface);
    text-decoration: none;
}

footer{
    padding: var(--spacing-sm) 0;
    background-color: var(--color-primary-dark);
    color:var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.footer-content{
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-brand{
    color: var(--color-surface);
    font-weight: var(--font-weight-semibold);
}

footer p{
    margin: 0;
}

@media (max-width: 768px) {
    header{
        padding: var(--spacing-sm) 0;
    }
    header .container{
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    nav{
        flex-wrap: wrap;
        justify-content: center;
    }
    .hero{
        min-height: 400px;
        padding: var(--spacing-xl) 0;
    }
    .hero h2{
        font-size: var(--font-size-xl-plus);
    }
    .container{
        padding: 0 var(--spacing-sm);
    }
    .solutions-list{
        flex-direction: column;
    }
    .hero-content{
        width: 100%;
    }
    .hero-visual{
        display: none;
    }
    .company .container{
        flex-direction: column;
    }
    .company-content{
        width: 100%;
    }
    .company-highlights{
        width: 100%;
        margin-top: var(--spacing-lg);
    }
    .footer-content{
        flex-direction: column;
        align-items: flex-start;
    }
    .download-item{
        flex-direction: column;
        align-items: flex-start;
    }
}