:root {
    --primary-brand-color: #002654; /* rgba(0, 38, 84, 1) */
    --light-background-color: #DDDDDD;
    --text-light: #FFFFFF;
    --font-primary: 'Merriweather', serif;
    --font-secondary: 'Ropa Sans', sans-serif;
}

* {
    box-sizing: border-box;
    text-decoration: none;
}

body {
    font-family: var(--font-primary);
    font-size: 14px;
    margin: 0;
    background-color: var(--text-light);
}

/* --- Header --- */
.site-header-container {
    width: 100%;
    background: url("../images/v27_3.png") no-repeat center center;
    background-size: cover;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 10%;
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(255, 255, 255, 0));
}

.site-header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.site-header-left-r {
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.site-logo {
    width: 153px;
    height: 50px;
    background: url("../images/Logo_CITE.png") no-repeat center center;
    background-size: contain;
}

.header-nav-item a {
    color: var(--text-light);
    font-size: 13px;
    padding: 0 10px;
}

.site-header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-nav-item a[href="questionnaire.html"] {
    animation: pulse-animation 1.5s infinite;
    border-radius: 5px;
    padding-left: 5px;
    padding-right: 5px;
}

@keyframes pulse-animation {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 165, 0, 0.7);
    }
    70% {
        transform: scale(1.05);
        box-shadow: 0 0 10px 15px rgba(255, 165, 0, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 165, 0, 0);
    }
}

.donate-button {
    padding: 10px 20px;
    background: var(--primary-brand-color);
    color: var(--text-light);
    border-radius: 10px;
    font-size: 13px;
    cursor: pointer;
}

.donate-button:hover {
    background: rgba(0, 38, 84, 0.8);
}

/* --- Footer --- */
.site-footer {
    width: 100%;
    background: var(--primary-brand-color);
    padding: 20px;
    color: var(--text-light);
}

.footer-logo {
    width: 20%;
    height: 50px;
    margin: 10px auto;
    background: url("../images/Logo_CITE.png") no-repeat center center;
    background-size: contain;
}

.footer-nav {
    display: flex;
    justify-content: space-between;
    padding: 10px;
}

.footer-nav-column {
    flex: 1;
    padding: 25px 10px;
    margin: 5px;
    text-align: center;
}

.footer-nav-title {
    font-size: 20px;
    margin-bottom: 25px;
    display: block;
}

.footer-nav-links {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.footer-nav-links a {
    color: var(--text-light);
    font-size: 12px;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    /* Header modifications for mobile */
    .site-header {
        flex-direction: column;
        padding: 10px 5%;
    }
    
    .site-header-left {
        flex-direction: column;
        width: 100%;
        gap: 10px;
        margin-bottom: 15px;
    }
    
    .site-header-left-r {
        gap: 0;
    }
    
    .header-nav-item {
        width: 100%;
        text-align: center;
        padding: 8px 0;
    }
    
    .site-header-right {
        width: 100%;
        justify-content: center;
    }
    
    .donate-button {
        width: 100%;
        text-align: center;
        padding: 12px 20px;
    }
    
    /* Footer modifications for mobile */
    .footer-nav {
        flex-direction: column;
    }
    
    .footer-logo {
        width: 50%;
    }
    
    .footer-nav-column {
        width: 100%;
        padding: 15px 0;
        margin: 0;
    }
    
    .footer-nav-title {
        margin-bottom: 10px;
    }
}

/* Small phones */
@media (max-width: 480px) {
    .site-logo {
        width: 120px;
        height: 40px;
    }
    
    .footer-nav-title {
        font-size: 16px;
    }
}