/* ==================== 
   OSNOVNE VARIJABLE I RESET 
   ==================== */

:root {
    --primary-color: #d4381f;
    --secondary-color: #333333;
    --light-color: #f5f5f5;
    --white: #ffffff;
    --text-dark: #222222;
    --text-light: #666666;
    --border-color: #e0e0e0;
    --transition: all 0.3s ease;
    --container-width: 1200px;
    --container-padding: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

/* ==================== 
   CONTAINER I ZAJEDNIČKI ELEMENTI 
   ==================== */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 50px;
}

h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

p {
    margin-bottom: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

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

a:hover {
    color: darken(var(--primary-color), 10%);
}

/* ==================== 
   DUGMIĆI 
   ==================== */

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #b8290f;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(212, 56, 31, 0.3);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: #1a1a1a;
    transform: translateY(-2px);
}

/* ==================== 
   HEADER I NAVIGACIJA 
   ==================== */

.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.logo img {
    height: 40px;
    width: auto;
}

.navbar {
    display: flex;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--secondary-color);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==================== 
   HERO SEKCIJA 
   ==================== */

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #b8290f 100%);
    color: var(--white);
    padding: 100px var(--container-padding);
    text-align: center;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
background-image: url(assets/images/back.jpg);
    background-repeat: no-repeat;
    background-size: cover;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.95);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== 
   SEKCIJA USLUGA 
   ==================== */

.usluge {
    padding: 80px var(--container-padding);
    background-color: var(--light-color);
}

.usluge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.usluga-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.usluga-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.usluga-image {
    overflow: hidden;
    height: 250px;
    background-color: var(--border-color);
}

.usluga-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.usluga-card:hover .usluga-image img {
    transform: scale(1.05);
}

.usluga-content {
    padding: 25px;
}

.usluga-content h3 {
    color: var(--primary-color);
    text-transform: uppercase;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.usluga-content p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ==================== 
   SEKCIJA REFERENCI 
   ==================== */

.reference {
    padding: 80px var(--container-padding);
    background-color: var(--white);
}

.reference-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.1);
    filter: brightness(1.1);
}

.gallery-item::after {
    content: '🔍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover::after {
    opacity: 1;
}

/* ==================== 
   LIGHTBOX 
   ==================== */

.lightbox {
    display: none;
    position: fixed;
    z-index: 1000;
    padding: 20px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    opacity: 0;
    animation: fadeIn 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.lightbox-img {
    max-width: 90%;
    max-height: 80vh;
    object-fit: contain;
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
    }
    to {
        transform: scale(1);
    }
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: var(--white);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--primary-color);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--white);
    font-size: 30px;
    padding: 10px 15px;
    cursor: pointer;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    transition: var(--transition);
    user-select: none;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background-color: var(--primary-color);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

/* ==================== 
   SEKCIJA O NAMA 
   ==================== */

.onama {
    padding: 80px var(--container-padding);
    background-color: var(--light-color);
}

.onama-content h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.onama-content p {
    font-size: 1rem;
    max-width: 800px;
}

/* ==================== 
   SEKCIJA DVORCI - MODELI
   ==================== */

.dvorci-section {
    padding: 80px var(--container-padding);
    background-color: var(--white);
}

.dvorac-card {
    background-color: var(--light-color);
    border-radius: 10px;
    padding: 40px;
    margin-bottom: 60px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.dvorac-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transform: translateY(-3px);
}

.model-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 3px solid var(--primary-color);
}

.model-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
    text-transform: uppercase;
    margin: 0;
}

.model-number {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
}

.specifications {
    background-color: var(--white);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    border-left: 4px solid var(--primary-color);
}

.specifications p {
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-dark);
}

.specifications strong {
    color: var(--primary-color);
    font-weight: 600;
}

.model-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    display: block;
    background-color: var(--border-color);
}

.gallery-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
    display: block;
}

.gallery-item:hover img {
    transform: scale(1.1);
    filter: brightness(1.15);
}

.gallery-item::after {
    content: '🔍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.5rem;
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* ==================== 
   SEKCIJA DVORCI 
   ==================== */
    padding: 80px var(--container-padding);
    background: linear-gradient(135deg, rgba(212, 56, 31, 0.1) 0%, rgba(51, 51, 51, 0.1) 100%);
    text-align: center;
}

.dvorci-info {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--text-light);    
}

.dvorci-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 
   SEKCIJA KONTAKT 
   ==================== */

.kontakt {
    padding: 80px var(--container-padding);
    background-color: var(--white);
}

.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 50px;
}

.kontakt-info h3 {
    color: var(--primary-color);
    margin-bottom: 30px;
}

.kontakt-info p {
    margin-bottom: 15px;
    font-size: 1rem;
}

.kontakt-info a {
    color: var(--primary-color);
    font-weight: 600;
}

/* ==================== 
   FORMA 
   ==================== */

.forma {
    background-color: var(--light-color);
    padding: 30px;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.forma input,
.forma textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.forma input:focus,
.forma textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(212, 56, 31, 0.1);
}

/* ==================== 
   FOOTER 
   ==================== */

.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 40px var(--container-padding);
    text-align: center;
}

.footer p {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.8);
}

/* ==================== 
   LAZY LOADING ANIMACIJA 
   ==================== */

img[loading="lazy"] {
    background: linear-gradient(90deg, var(--border-color) 25%, rgba(255, 255, 255, 0.1) 50%, var(--border-color) 75%);
    background-size: 200% 100%;
    animation: loading 2s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

img[loading="lazy"].loaded {
    animation: none;
    background: none;
}

/* ==================== 
   MEDIA UPITI 
   ==================== */

@media (max-width: 768px) {
    :root {
        --container-width: 100%;
        --container-padding: 15px;
    }

    .header-container {
        height: 60px;
    }

    .menu-toggle {
        display: flex;
    }

    .navbar {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        z-index: 99;
    }

    .navbar.active {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        gap: 15px;
    }

    .nav-link::after {
        display: none;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .hero {
        padding: 60px var(--container-padding);
        min-height: 400px;
    }

    h2 {
        font-size: 2rem;
        margin-bottom: 30px;
    }

    h3 {
        font-size: 1.2rem;
    }

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

    .kontakt-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .dvorci-buttons {
        flex-direction: column;
    }

    .dvorci-buttons .btn {
        width: 100%;
        text-align: center;
    }

    .reference-gallery {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .model-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .model-header h2 {
        font-size: 1.5rem;
    }

    .model-gallery {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }

    .gallery-item img {
        height: 150px;
    }

    .dvorac-card {
        padding: 25px;
        margin-bottom: 40px;
    }

    .usluge,
    .reference,
    .onama,
    .kontakt,
    .dvorci-sekcija,
    .dvorci-section {
        padding: 50px var(--container-padding);
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 20px;
        padding: 8px 12px;
    }

    .lightbox-close {
        font-size: 30px;
        top: 10px;
        right: 15px;
    }
}

@media (max-width: 480px) {
    .logo span {
        display: none;
    }

    .logo img {
        height: 40px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .nav-links {
        gap: 10px;
    }

    .usluga-image {
        height: 200px;
    }

    .nav-link {
        font-size: 0.85rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .forma {
        padding: 20px;
    }

    .kontakt-info p {
        font-size: 0.9rem;
    }

    .model-header {
        flex-direction: column;
    }

    .model-header h2 {
        font-size: 1.3rem;
    }

    .model-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .gallery-item img {
        height: 120px;
    }

    .dvorac-card {
        padding: 15px;
        margin-bottom: 30px;
    }

    .specifications {
        padding: 15px;
    }

    .specifications p {
        font-size: 0.85rem;
    }
}

/* ==================== 
   UTILITY KLASE 
   ==================== */

.fade-in {
    animation: fadeInUp 0.6s ease;
}

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

/* Pristupačnost */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}