/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1f2937;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('slike kuća 2026/kuća/IMG-20250609-WA0000.jpg') center/cover;
    opacity: 1;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.2) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: white;
    padding: 2rem;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    font-weight: 300;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

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

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* Gallery Section */
.gallery-section {
    background: var(--bg-light);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 2rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    animation: fadeIn 0.5s ease-out;
}

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

.gallery-item {
    opacity: 1;
    transform: scale(1);
    transition: var(--transition);
}

.gallery-item.hidden {
    display: none;
}

.gallery-item-inner {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    aspect-ratio: 4/3;
    background: var(--bg-light);
    cursor: zoom-in;
}

.gallery-item-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
    cursor: zoom-in;
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    cursor: zoom-in;
}

/* Gallery overlay colors by category */
.gallery-item[data-category="plavi"] .gallery-overlay {
    background: rgba(37, 99, 235, 0.9);
}

.gallery-item[data-category="zeleni"] .gallery-overlay {
    background: rgba(16, 185, 129, 0.9);
}

.gallery-item[data-category="zuti"] .gallery-overlay {
    background: rgba(245, 158, 11, 0.9);
}

.gallery-item[data-category="kuca"] .gallery-overlay {
    background: rgba(255, 255, 255, 0.9);
}

.gallery-item-inner:hover .gallery-overlay {
    opacity: 1;
}

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

.gallery-btn {
    padding: 0.75rem 1.5rem;
    background: white;
    color: var(--primary-color);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.gallery-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Apartment Section */
.apartment-section {
    background: var(--bg-white);
    padding: 5rem 0;
}

/* Apartment background colors */
#plavi-apartman {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(30, 64, 175, 0.1) 100%);
}

#zeleni-apartman {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(5, 150, 105, 0.1) 100%);
}

#zuti-apartman {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(217, 119, 6, 0.1) 100%);
}

.apartment-header {
    text-align: center;
    margin-bottom: 4rem;
}

.apartment-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.apartment-subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    font-weight: 400;
}

.apartment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.apartment-text {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.apartment-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.apartment-details,
.apartment-equipment,
.apartment-amenities {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    border-left: 4px solid var(--primary-color);
}

/* Apartment color variants */
.apartment-blue {
    border-left-color: var(--primary-color);
}

.apartment-blue h3 {
    color: var(--primary-color);
}

.apartment-blue .apartment-list li::before {
    color: var(--primary-color);
}

.apartment-green {
    border-left-color: #10b981;
}

.apartment-green h3 {
    color: #10b981;
}

.apartment-green .apartment-list li::before {
    color: #10b981;
}

.apartment-yellow {
    border-left-color: #f59e0b;
}

.apartment-yellow h3 {
    color: #f59e0b;
}

.apartment-yellow .apartment-list li::before {
    color: #f59e0b;
}

.apartment-details h3,
.apartment-equipment h3,
.apartment-amenities h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.apartment-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.apartment-list li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
    line-height: 1.6;
    font-size: 1rem;
}

.apartment-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.125rem;
}

.amenities-intro {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.apartment-gallery {
    position: sticky;
    top: 100px;
}

.apartment-gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.apartment-gallery-item {
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.apartment-gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.apartment-gallery-item-inner {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--bg-light);
    cursor: zoom-in;
}

.apartment-gallery-item-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
    cursor: zoom-in;
}

.apartment-gallery-item-inner:hover img {
    transform: scale(1.1);
}

/* Apartment gallery overlay colors */
#plavi-apartman .gallery-overlay {
    background: rgba(37, 99, 235, 0.9);
}

#zeleni-apartman .gallery-overlay {
    background: rgba(16, 185, 129, 0.9);
}

#zuti-apartman .gallery-overlay {
    background: rgba(245, 158, 11, 0.9);
}

/* About Section */
.about-section {
    background: var(--bg-white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature {
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 1rem;
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Contact Section */
.contact-section {
    background: var(--bg-light);
}

.contact-content {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    text-align: left;
    padding: 2rem;
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.contact-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
    font-size: 1rem;
}

.contact-map {
    position: relative;
    width: 100%;
    height: 500px;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--bg-light);
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 1rem;
}

.reservation-button-wrapper {
    text-align: center;
    margin-top: 2rem;
}

.btn-reservation {
    font-size: 1.125rem;
    padding: 1rem 2.5rem;
}

/* Reservation Section */
.reservation-section {
    background: var(--bg-light);
    padding: 5rem 0;
}

.reservation-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.reservation-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    text-align: center;
    margin-top: 1rem;
}

.form-submit .btn {
    font-size: 1.125rem;
    padding: 1rem 3rem;
    width: 100%;
    max-width: 400px;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 0.5rem;
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 40px;
    color: white;
    font-size: 3rem;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.lightbox-close:hover {
    transform: scale(1.2);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 3rem;
    cursor: pointer;
    padding: 1rem;
    transition: var(--transition);
    user-select: none;
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    transform: translateY(-50%) scale(1.2);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 2rem;
        gap: 2rem;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

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

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

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

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .apartment-gallery-grid {
        grid-template-columns: 1fr;
    }

    .apartment-title {
        font-size: 2rem;
    }

    .apartment-subtitle {
        font-size: 1.125rem;
    }

    .filter-buttons {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }

    .lightbox-prev,
    .lightbox-next {
        font-size: 2rem;
        padding: 0.5rem;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .lightbox-close {
        top: 20px;
        right: 20px;
        font-size: 2rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-map {
        height: 400px;
    }

    .reservation-form-wrapper {
        padding: 2rem 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .apartment-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .apartment-gallery {
        position: static;
        order: -1;
    }

    .apartment-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .apartment-title {
        font-size: 2.5rem;
    }

    .apartment-subtitle {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-map {
        height: 400px;
        order: -1;
    }

    .contact-info {
        gap: 1rem;
    }

    .contact-item {
        text-align: center;
    }

    .apartment-gallery-grid {
        grid-template-columns: 1fr;
    }

    .apartment-title {
        font-size: 2rem;
    }

    .apartment-subtitle {
        font-size: 1.125rem;
    }

    .reservation-form-wrapper {
        padding: 1.5rem 1rem;
    }

    .form-submit .btn {
        width: 100%;
    }
}