@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100;300;400;500;600&display=swap');

:root {
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --color-primary: #374151;
    --color-primary-dark: #1F2937;
    --color-dark-bg: #111827;
    --color-light-bg: #f9fafb;
    --color-text-dark: #1a1a1a;
    --color-text-light: #fafafa;
    --color-text-muted: #6b7280;
    --color-text-muted-dark: #9ca3af;
    --container-width: 1100px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-text-dark);
    background: var(--color-light-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    padding-top: 82px; /* Prilagođeno visini navbara */
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: padding 0.3s ease, box-shadow 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
    padding: 0.75rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
}

.logo img {
    height: 45px;
    width: auto;
    display: block;
    transition: height 0.3s ease;
}

.navbar.scrolled .logo img {
    height: 40px;
}

.hamburger {
    display: block;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 0;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-text-dark);
    margin: 6px 0;
    transition: all 0.3s ease-in-out;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-menu {
    display: none;
    flex-direction: column;
    align-items: center;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    gap: 1.5rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.nav-menu.active {
    display: flex;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--color-primary-dark);
}

/* Generic Reveal Animation for Scroll */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hero Banner */
.hero {
    height: calc(100vh - 82px);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    text-align: center;
    color: var(--color-text-light);
}

.hero-video-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    object-fit: cover;
    transform: translate(-50%, -50%);
    z-index: -2;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: -1;
}

.hero-container {
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: 1rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 5.5rem;
    font-weight: 300;
    line-height: 1.2;
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
    letter-spacing: 1px;
}

.hero-description {
    font-size: 1.2rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    max-width: 650px;
    line-height: 1.9;
    margin: 0 auto 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
}

.btn-primary, .form-submit {
   background: transparent;
    color: var(--color-text-light);
    border: 2px solid var(--color-text-light);
    padding: 1rem 2.5rem;
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary:hover, .form-submit:hover {
    background: transparent;
    color: var(--color-text-light);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-light);
    border: 2px solid var(--color-text-light);
    padding: 1rem 2.5rem;
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: var(--color-text-light);
    color: var(--color-primary-dark);
}

/* O nama sekcija */
.about {
    padding: 8rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
    gap: 3rem;
}

.about-image-container {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.about-image-container img {
    width: 100%;
    display: block;
    object-fit: cover;
}

.about-text-container {
    padding: 2rem;
}

.about-text-container h2 {
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 3.5px;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.about-text-container h3 {
    font-size: 2.8rem;
    font-weight: 300;
    color: #111827;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.about-text-container p {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.9;
}

/* Kontakt sekcija */
.contact {
    padding: 8rem 0;
    background: linear-gradient(135deg, #1f2937 0%, var(--color-dark-bg) 100%);
    color: var(--color-text-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 6rem;
}

.contact-left h2 {
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 3.5px;
    color: var(--color-text-muted-dark);
    margin-bottom: 2rem;
}

.contact-left h3 {
    font-size: 3.2rem;
    font-weight: 100;
    color: var(--color-text-light);
    margin-bottom: 3rem;
    line-height: 1.2;
}

.contact-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
}

.contact-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.contact-label {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--color-text-muted-dark);
    margin-bottom: 0.5rem;
}

.contact-value {
    font-size: 1.15rem;
    font-weight: 300;
    color: var(--color-text-light);
    text-decoration: none;
}
 .contact-value a {
    color: var(--color-text-light);
    text-decoration: none;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 12px;
}

.form-group {
    margin-bottom: 2.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--color-text-muted-dark);
    display: block;
    margin-bottom: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-light);
    font-size: 1.1rem;
    font-weight: 300;
    font-family: var(--font-primary);
    padding: 1rem 0;
    transition: border-color 0.3s ease;
    border-radius: 0;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--color-text-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.form-status {
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}
.form-status.success {
    background-color: rgba(5, 150, 105, 0.1);
    color: #069569;
}
.form-status.error {
    background-color: rgba(220, 38, 38, 0.1);
    color: #dc2626;
}

/* Footer */
.footer {
    background: #fff;
    color: var(--color-text-muted);
    padding: 4rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.footer-content p {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 2.5px;
}

/* Stil za gumb "Povratak na vrh" (SVG verzija) */
.scroll-to-top-btn {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary-dark);
    border-radius: 50%;
    cursor: pointer;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.scroll-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top-btn:hover {
    background-color: var(--color-primary);
}


/* --- Responsive Design --- */

@media (min-width: 769px) {
    .hamburger {
        display: none;
    }

    .nav-menu {
        display: flex;
        flex-direction: row;
        position: static;
        background: none;
        backdrop-filter: none;
        box-shadow: none;
        border-top: none;
        padding: 0;
        gap: 2.5rem;
    }

    .nav-menu a {
        font-size: 0.9rem;
        letter-spacing: 1.5px;
    }
}

@media (max-width: 1024px) {
    .hero h1 { font-size: 4.5rem; }
    .contact-content { grid-template-columns: 1fr; }
    .contact-left { text-align: center; }
}

@media (max-width: 768px) {
    main { padding-top: 82px; }
    .hero h1 { font-size: 3.2rem; letter-spacing: -2px; }
    .about { padding: 6rem 0; }
    .about-content { grid-template-columns: 1fr; }
    .about-text-container { padding: 1rem 0 0 0; }
    .about-text-container h3 { font-size: 2.2rem; }
    .contact { padding: 6rem 0; }
    .contact-content { gap: 3rem; }
    .container { padding: 0 1.5rem; }
    .contact-form { padding: 2rem; }
}