:root {
    --primary-color: #2596be;
    --secondary-color: #1e7bb8;
    --background-color: #002c47;
    --text-color: #333;
    --button-bg-color: #f7931e;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* ===== CSS Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.2;
    font-size: 16px;
}

body {
    min-height: 100vh;
    padding: 2rem;
    background: var(--background-color);
    color: #333;
}

/* ===== Layout Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 4rem);
}

/* ===== Header Styles ===== */
.header {
    text-align: center;
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1rem;
    background: var(--background-color);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header h2 {
    font-size: 1.25rem;
    font-weight: 500;
    color: #4a5568;
    margin-bottom: 1rem;
}

.header i {
    font-size: 1rem;
    color: #718096;
    font-style: italic;
}
header {
    background-color: #002c47;
    color: #fff;
    padding: 10px 20px;
    display:flex;
    justify-content: space-around;
    align-items: center;
    flex-direction: row;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
nav ul li {
    display: inline;
    margin-right: 10px;
    cursor: pointer;
    transition: 0.3s;
    padding: 5px 10px;
    border-radius: 5px;
}

nav ul li:hover {
    background-color: var(--secondary-color);
    padding: 5px 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

/* ===== Downloads Grid ===== */
.item-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

/* ===== Download Cards ===== */
.item-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    padding: 1.5rem;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border-radius: 20px;
}


.item-box h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
    line-height: 1.3;
}

/* ===== Buttons ===== */
a {
    text-decoration: none;
    display: inline-block;
}

.button {
    background: var(--button-bg-color);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 150, 190, 0.3);
    text-transform: none;
    letter-spacing: 0.025em;
    position: relative;
    overflow: hidden;
}

.button:hover::before {
    left: 100%;
}

.button:hover {
    transform: translateY(-2px);
}

.button:active {
    transform: translateY(0);
}

.button .material-symbols-outlined {
    font-size: 1.2rem;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    margin-top: auto;
    padding: 1.5rem;
}

.footer p {
    color: white;
    font-size: 0.75rem;
    margin: 0;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.logo-container img {
    filter: drop-shadow(1px 1px 0  rgba(0, 0, 0, 1));
}

.logo-big {
    max-height: 40px;
    margin: 0 10px;
}

.logo-small {
    max-height: 70px;
    margin: 0 10px;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    .container {
        min-height: calc(100vh - 2rem);
    }
    
    .header {
        padding: 2rem 1.5rem;
        margin-bottom: 2rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header h2 {
        font-size: 1.1rem;
    }
    
    .item-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .item-box {
        padding: 1.25rem;
    }
    
    .button {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.75rem;
    }
    
    .header h2 {
        font-size: 1rem;
    }
    
    .item-box {
        padding: 1rem;
    }
    
    .button {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}

/* ===== Accessibility & Focus States ===== */


/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.item-box {
    animation: fadeInUp 0.8s ease forwards;
}

.item-box:nth-child(1) { animation-delay: 0.1s; }
.item-box:nth-child(2) { animation-delay: 0.2s; }
.item-box:nth-child(3) { animation-delay: 0.3s; }
.item-box:nth-child(4) { animation-delay: 0.4s; }


/* ===== Print Styles ===== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .button {
        background: #333;
        color: white;
    }
    
    .item-box,
    .header,
    .footer {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}