:root {
    --bg: #ffffff;
    --dark: #111111;
    --light: #f7f7f7;
    --accent: #004aad;
    --accent-light: #0d6efd;
    --text: #222222;
    --muted: #555;
    --shadow: rgba(0,0,0,0.15);
}

body.dark-mode {
    --bg: #121212;
    --dark: #f5f5f5;
    --light: #181818;
    --accent: #4c8ef7;
    --accent-light: #90b9ff;
    --text: #eaeaea;
    --muted: #aaaaaa;
    --shadow: rgba(255,255,255,0.08);
}

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

html, body {
    scroll-behavior: smooth;
    font-family: 'Poppins', sans-serif;
    background: var(--light);
    color: var(--text);
    transition: background 0.6s ease, color 0.6s ease;
}

/* Fade ulazak stranice */
.fade-init {
    opacity: 0;
}

.fade-show {
    opacity: 1;
    transition: opacity 1.2s ease;
}

/* ---------------- Header ---------------- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg);
    box-shadow: 0 2px 8px var(--shadow);
    z-index: 999;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent);
    text-decoration: none;
}

.logo i {
    margin-right: 6px;
    color: var(--accent-light);
}

nav a, nav button {
    color: var(--text);
    text-decoration: none;
    margin-left: 1rem;
    font-weight: 500;
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    transition: color 0.3s;
}

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

#themeToggle {
    font-size: 1.2rem;
    color: var(--accent);
}

/* ---------------- Hero ---------------- */
.hero {
    position: relative;
    height: 80vh;
    background: url('kamion.jpg') center/cover no-repeat fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light);
}

.hero .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.35);
}

.hero-text {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 1rem;
}

.hero-title .line1 {
    display: block;
    font-size: 2.2rem;
    font-weight: 700;
    color: #fff;
}

.hero-title .line2 {
    display: block;
    font-size: 1.3rem;
    color: #fff;
    margin-top: 0.4rem;
}

.hero p {
    color: #fff;
    margin: 1rem 0;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.6);
}

/* ---------------- Sections ---------------- */
main {
    max-width: 1060px;
    margin: 0 auto;
    padding-top: 90px;
}

section {
    padding: 60px 2rem;
    margin: 40px auto;
    border-radius: 15px;
    background: var(--bg);
    box-shadow: 0 5px 20px var(--shadow);
}

section h2 {
    text-align: center;
    margin-bottom: 40px;
    color: var(--accent);
}

/* ---------------- Cards & Process ---------------- */
.services, .process {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card, .step {
    background: var(--bg);
    box-shadow: 0 3px 10px var(--shadow);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.hover-float:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 18px var(--shadow);
}

/* Ikone */
.card i, .step .icon-wrap i {
    font-size: 2.2rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

/* Više link */
.more-link {
    color: var(--accent-light);
    font-weight: 600;
    cursor: pointer;
    display: inline-block;
    margin-top: 0.3rem;
    text-decoration: underline;
}

.more-link:hover {
    color: var(--accent);
}

/* ---------------- Popup ---------------- */
.popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.popup-content {
    background: var(--bg);
    padding: 2rem;
    border-radius: 15px;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 5px 25px var(--shadow);
    animation: fadeUp 0.4s ease;
}

.popup-content h3 {
    color: var(--accent);
    margin-bottom: 1rem;
}

.popup-content p {
    color: var(--text);
    margin-bottom: 0.5rem;
}

.popup-close {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.2rem;
    cursor: pointer;
    font-weight: 600;
    margin-top: 15px;
}

.popup-close:hover {
    background: var(--accent-light);
}

/* ---------------- Popup Gallery ---------------- */
.popup-gallery {
    display: flex;
    flex-wrap: wrap; /* Omogućava da se slike rasporede u više redova */
    justify-content: center; /* Centriranje slika */
    gap: 10px; /* Razmak između slika */
    margin-bottom: 20px;
}

.popup-gallery img {
    max-width: 100%; 
    height: auto; 
    max-height: 200px; /* Ograničavanje visine slika na 200px */
    border-radius: 5px; 
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    cursor: pointer; 
    transition: transform 0.2s; 
}

.popup-gallery img:hover {
    transform: scale(1.05); /* Uvećanje slike na hover */
}

/* ---------------- Popup Zoom (DODATO za uvećanje slika) ---------------- */
#imageZoomOverlay {
    z-index: 1050; /* Veći z-index da prekrije normalan popup */
}

.zoom-content {
    max-width: 90%; 
    max-height: 90vh; 
    padding: 0; 
    /* Dodajemo da bude relativan zbog apsolutno pozicioniranog dugmeta za zatvaranje */
    position: relative; 
}

.zoom-content img {
    max-width: 100%;
    max-height: 80vh; /* Ograničava visinu slike unutar zoom boxa */
    width: auto;
    height: auto;
    display: block;
    border-radius: 15px;
}

.zoom-close {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 1100;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    padding: 0;
    line-height: 35px;
    text-align: center;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    transition: background 0.2s;
}

.zoom-close:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text);
}


/* ---------------- Animacije ---------------- */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------------- Scroll to top ---------------- */
#scrollTopBtn {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 10px var(--shadow);
    z-index: 900;
}

#scrollTopBtn:hover {
    background: var(--accent-light);
}

/* ---------------- Footer ---------------- */
footer {
    background: var(--accent);
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 60px;
    font-weight: 500;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 768px) {
    .hero {
        background-attachment: scroll;
        height: 70vh;
    }
    .hero-title .line1 {
        font-size: 1.7rem;
    }
    .hero-title .line2 {
        font-size: 1rem;
    }
    nav a {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .logo {
        display: none;
    }
    section {
        padding: 40px 1rem;
    }
    .card {
        padding: 1rem;
    }
    .zoom-close {
        top: 5px;
        right: 5px;
    }
}