/* ==========================================================================
   CSS Variables & Reset
   ========================================================================== */
:root {
    /* Colors */
    --primary: #cf1275; /* Logo pinkish red */
    --primary-dark: #902678; /* Logo magenta */
    --secondary: #272660; /* Logo navy */
    --dark: #111827;
    --light: #f9fafb;
    --white: #FFFFFF;
    --gray: #6B7280;
    --gray-light: #E5E7EB;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
    
    /* Layout */
    --container-max: 1200px;
    --header-height: 80px;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--secondary);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xxl) 0;
}

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

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

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

.btn-outline-white {
    background-color: transparent;
    border-color: var(--white);
    color: var(--white);
}

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--gray-light);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    height: 70px;
}

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

.logo img {
    height: 40px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--secondary);
    position: relative;
}

.nav-link:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-link:not(.btn-primary):hover::after,
.nav-link.active:not(.btn-primary)::after {
    width: 100%;
}

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

.nav-link.btn-primary {
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    background-color: var(--primary);
    color: var(--white);
    transition: var(--transition);
}

.nav-link.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--dark);
    border-radius: 2px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: calc(var(--header-height) + 6rem);
    padding-bottom: var(--spacing-xl);
    overflow: hidden;
    background-color: var(--white);
    background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0) 70%, rgba(255, 255, 255, 1) 100%), linear-gradient(rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.7)), url('../images/hero_pattern.png');
    background-size: 100% 100%, auto, 600px;
    background-position: bottom, center, center;
    background-repeat: no-repeat, no-repeat, repeat;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto 0 0; /* Align left */
}

.hero h1 {
    color: var(--dark);
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    max-width: 600px;
    color: var(--gray);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* Hero Slider */
.hero-slider-container {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-top: 5rem;
    position: relative;
}

.hero-slider {
    width: 100%;
    position: relative;
}

.slide-track {
    display: flex;
    gap: 2rem;
    padding-left: max(var(--spacing-lg), calc((100vw - var(--container-max)) / 2 + var(--spacing-lg)));
    padding-right: max(var(--spacing-lg), calc((100vw - var(--container-max)) / 2 + var(--spacing-lg)));
    padding-bottom: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -ms-overflow-style: none; /* IE and Edge */
    scrollbar-width: none; /* Firefox */
}
.slide-track::-webkit-scrollbar {
    display: none;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    color: var(--dark);
    transition: var(--transition);
}

.slider-arrow:hover {
    background-color: var(--primary);
    color: var(--white);
}

.slider-arrow-left {
    left: 50px;
}

.slider-arrow-right {
    right: 50px;
}

.slide-track.active {
    cursor: grabbing;
}
.slide-track:not(.active) {
    cursor: grab;
}

.slide-card {
    position: relative;
    display: block; /* It's an a tag now */
    text-decoration: none;
    width: 350px;
    height: 450px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    scroll-snap-align: start;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: transform 0.3s ease;
}

@media (min-width: 900px) {
    .slide-card {
        width: 500px;
    }
}

.slide-card:hover {
    transform: translateY(-5px);
}

.slide-card:hover h3 {
    transform: translateY(0);
}

.slide-card:hover .view-btn {
    opacity: 1;
    transform: translateY(0);
}

.slide-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0) 100%);
    color: var(--white);
}

.slide-card-content h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.card-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--white);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: var(--shadow-sm);
    z-index: 2;
}

.btn-link {
    color: var(--white);
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-link::after {
    content: '→';
    transition: transform 0.3s;
}

.btn-link:hover::after {
    transform: translateX(5px);
}

/* ==========================================================================
   Common Section Styles
   ========================================================================== */
.section-header {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.divider {
    width: 60px;
    height: 4px;
    background-color: var(--primary);
    margin-bottom: var(--spacing-md);
    border-radius: 2px;
}

.section-header p {
    color: var(--gray);
    max-width: 600px;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.intro-text {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.about-text p {
    margin-bottom: var(--spacing-md);
}

.about-signature {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-light);
}

.about-signature .name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark);
    margin-bottom: 0;
}

.about-signature .role {
    color: var(--primary);
    font-size: 0.875rem;
    margin-bottom: 0;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.placeholder-img {
    width: 100%;
    height: 500px;
    background-size: cover;
    background-position: center;
}

.experience-badge {
    position: absolute;
    top: -40px;
    left: -40px;
    background-color: var(--white);
    color: var(--primary);
    padding: 2rem;
    border-radius: 50%;
    width: 150px;
    height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.experience-badge .number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
}

/* ==========================================================================
   Portfolio Section
   ========================================================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    height: 300px;
    box-shadow: var(--shadow-md);
    display: block;
}

.item-img {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
}

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

.item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    color: var(--white);
}

.item-overlay h3 {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    transform: translateY(20px);
    transition: var(--transition);
}

.view-btn {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
    transition-delay: 0.1s;
}

.portfolio-item:hover .item-overlay h3 {
    transform: translateY(0);
}

.portfolio-item:hover .view-btn {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Upcoming Section
   ========================================================================== */
.upcoming {
    background-image: linear-gradient(rgba(31, 41, 55, 0.75), rgba(31, 41, 55, 0.75)), url('../images/development/dvojdomek-ve-svitavce.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    text-align: center;
}

.upcoming-card {
    max-width: 600px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xl);
    border-radius: 8px;
}

.badge {
    display: inline-block;
    background-color: var(--primary);
    color: var(--white);
    padding: 0.25rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.upcoming-card h2 {
    color: var(--white);
    font-size: 2rem;
}

.upcoming-card p {
    color: var(--gray-light);
    margin-bottom: var(--spacing-lg);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

.info-card {
    background-color: transparent;
    padding: 0;
    height: 100%;
}

.info-card h3 {
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.info-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.info-item .icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 4px;
}

.info-item p {
    color: var(--gray);
}

.info-item a:hover {
    color: var(--primary);
}

.form {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-light);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1.125rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--light);
    color: var(--dark);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    border-top: 1px solid var(--gray-light);
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-logo img {
    height: 40px;
}

.footer-nav ul {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-nav a {
    color: var(--secondary);
    font-weight: 500;
}

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

.footer-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-light);
}

.footer-copy {
    color: var(--gray);
    font-size: 0.875rem;
    width: 100%;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-right {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-left {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible,
.fade-right.visible,
.fade-left.visible {
    opacity: 1;
    transform: translate(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .experience-badge { left: -10px; top: -10px; width: 100px; height: 100px; padding: 1rem; }
    .experience-badge .number { font-size: 1.5rem; }
    .experience-badge .text { font-size: 0.7rem; }
    .slider-arrow-left { left: 20px; }
    .slider-arrow-right { right: 20px; }
}

@media (max-width: 768px) {
    .hamburger { display: block; }
    
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--white);
        transition: 0.3s;
        flex-direction: column;
        align-items: center;
        padding-top: var(--spacing-xl);
        border-top: 1px solid var(--gray-light);
    }

    .nav.active { left: 0; }
    
    .nav-list {
        flex-direction: column;
        text-align: center;
    }
    
    .hero { padding-top: calc(var(--header-height) + var(--spacing-xl)); }
    .hero h1 { font-size: 2.5rem; }
    
    .portfolio-grid { grid-template-columns: 1fr; }
    
    .footer-nav ul {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* ==========================================================================
   Subpages (Category & Project)
   ========================================================================== */
.subpage-header {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    padding-bottom: var(--spacing-lg);
    background-color: var(--white);
}

.subpage-header.category-header {
    padding-bottom: calc(var(--spacing-lg) + 3rem);
}

.breadcrumbs {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.breadcrumbs a {
    color: var(--primary);
    font-weight: 500;
}

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

.breadcrumbs .current {
    color: var(--dark);
    font-weight: 600;
}

.subpage-header h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.subpage-header p {
    font-size: 1.125rem;
    color: var(--gray);
    max-width: 800px;
}

/* Project Detail Layout */
.project-header {
    margin-top: var(--spacing-lg);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--gray-light);
    border-bottom: 1px solid var(--gray-light);
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--gray);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.meta-value {
    font-size: 1rem;
    color: var(--dark);
    font-weight: 500;
}

/* Gallery Grid - Masonry */
.gallery-grid {
    column-count: 1;
    column-gap: var(--spacing-md);
}

@media (min-width: 600px) {
    .gallery-grid { column-count: 2; }
}

@media (min-width: 900px) {
    .gallery-grid { column-count: 3; }
}

.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: zoom-in;
    margin-bottom: var(--spacing-md);
    display: inline-block; /* Prevents splitting across columns */
    width: 100%;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(17, 24, 39, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.lightbox.active {
    display: flex;
}

.lightbox-content-wrapper {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox-content {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
}

.lightbox-caption {
    position: absolute;
    bottom: -40px;
    left: 0;
    width: 100%;
    text-align: center;
    color: var(--white);
    font-size: 1rem;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: var(--white);
    font-size: 3rem;
    font-weight: 300;
    cursor: pointer;
    line-height: 1;
    z-index: 2001;
    transition: color 0.3s ease;
}

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

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--white);
    cursor: pointer;
    z-index: 2001;
    padding: 20px;
    transition: color 0.3s ease;
}

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

.lightbox-prev {
    left: 10px;
}

.lightbox-next {
    right: 10px;
}