/* ===== CSS varijable ===== */
:root {
    --color-primary: #1a3a5c;
    --color-primary-light: #2a5a8c;
    --color-primary-dark: #0f2640;
    --color-accent: #3498db;
    --color-accent-hover: #2980b9;
    --color-text: #2c3e50;
    --color-text-light: #5a6c7d;
    --color-bg: #ffffff;
    --color-bg-alt: #f4f7fa;
    --color-border: #dce4ec;
    --color-white: #ffffff;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --radius: 8px;
    --transition: 0.3s ease;
    --nav-height: 72px;
}

/* ===== Reset & baza ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Navigacija ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.2rem;
}

.nav-logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    font-size: 1.4rem;
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    color: var(--color-text);
    padding: 8px 16px;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.95rem;
    transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    background: var(--color-bg-alt);
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: background var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: "";
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

.nav-toggle.open .hamburger {
    background: transparent;
}

.nav-toggle.open .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.open .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    background: url("../img/naslovna1.png") center center / cover no-repeat;
    color: var(--color-white);
    text-align: center;
    padding: var(--nav-height) 20px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0) 40%, rgba(0,0,0,0.4) 100%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-cta {
    font-size: 1.1rem;
    padding: 16px 44px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Gumbi ===== */
.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(52, 152, 219, 0.4);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.5);
}

/* ===== Sekcije ===== */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-description {
    text-align: center;
    color: var(--color-text-light);
    max-width: 650px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}

/* ===== O nama ===== */
.about-grid {
    margin-top: 48px;
}

.about-text {
    max-width: 700px;
    margin: 0 auto 48px;
    text-align: center;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.credentials {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.credential-card {
    background: var(--color-bg-alt);
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

.credential-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.credential-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 16px;
    color: var(--color-accent);
}

.credential-card h3 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.credential-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ===== Usluge ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 48px;
}

.service-card {
    background: var(--color-white);
    padding: 36px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    border-top: 3px solid var(--color-accent);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 2.4rem;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.15rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== EU sufinanciranje ===== */
.eu-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.eu-image-wrapper {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.eu-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ===== Kontakt ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    font-size: 1.6rem;
    color: var(--color-accent);
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.contact-item h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.contact-item a,
.contact-item p {
    font-size: 1.05rem;
    color: var(--color-text);
}

.contact-item a:hover {
    color: var(--color-accent);
}

.contact-map {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.contact-map iframe {
    display: block;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.footer-brand .logo-icon {
    font-size: 1.2rem;
}

.footer-text {
    font-size: 0.9rem;
}

.footer-text a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-text a:hover {
    color: var(--color-white);
}

.footer-copy {
    font-size: 0.8rem;
    opacity: 0.6;
    margin-top: 8px;
}

/* ===== Scroll animacije ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .credentials {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 48px auto 0;
    }

    .eu-gallery {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 48px auto 0;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition), opacity var(--transition);
        gap: 4px;
    }

    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-link {
        display: block;
        padding: 12px 16px;
    }

    .section {
        padding: 60px 0;
    }

    .footer-text {
        font-size: 0.85rem;
        line-height: 1.8;
    }
}