/* ========================================
   CSS VARIABLEN & RESET
   ======================================== */

:root {
    /* Farben */
    --color-bg: #ececec;
    --color-bg-white: #ffffff;
    --color-text: rgb(90, 90, 90);
    --color-accent: rgb(120, 120, 120);
    --color-black: #000000;
    --color-white: #ffffff;
    --color-border: rgba(40, 40, 40, 0.15);
    
    /* Schriftarten */
    --font-title: 'Geist Mono', monospace;
    --font-body: 'Geist', sans-serif;
    
    /* Typografie Größen */
    --font-size-title: 2.5rem;
    --font-size-body: 1rem;
    --font-size-label: 0.75rem;
    
    /* Abstände */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    --spacing-3xl: 8rem;
    
    /* Container */
    --container-width: 1200px;
    --container-padding: 2rem;
    
    /* Übergänge */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* ========================================
   CONTAINER
   ======================================== */

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

/* ========================================
   TYPOGRAFIE
   ======================================== */

.section-label {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: var(--font-size-label);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: var(--spacing-md);
}

.section-title,
.hero-title {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: var(--font-size-title);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.section-description,
.hero-description,
.about-description,
.contact-description {
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: 1.8;
    max-width: 800px;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.site-header {
    background-color: var(--color-bg);
    border-bottom: none;
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition-medium);
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

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

.logo-container {
    cursor: pointer;
    transition: opacity var(--transition-fast);
    z-index: 1001;
}

.logo-container:hover {
    opacity: 0.7;
}

.logo {
    height: 50px;
    width: auto;
    object-fit: contain;
}

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

.nav-link {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
    position: relative;
    padding-bottom: 0.25rem;
    transition: color var(--transition-fast);
}

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

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

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

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-medium);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

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

/* ========================================
   HERO SECTION
   ======================================== */

.hero-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-white);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-image {
    aspect-ratio: 16 / 9;
    background-color: var(--color-black);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-medium);
}

.hero-image:hover {
    transform: scale(1.02);
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   PORTFOLIO SECTION
   ======================================== */

.portfolio-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--color-text);
    background-color: transparent;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background-color: rgb(180, 180, 180);
    border-color: rgb(180, 180, 180);
    color: var(--color-white);
}

.filter-btn.active {
    background-color: #5a5a5a;
    border-color: #5a5a5a;
    color: var(--color-white);
}

/* ========================================
   PROJECTS GRID
   ======================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.project-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.project-card.hidden {
    display: none;
}

.project-image {
    width: 100%;
    background-color: var(--color-black);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    min-height: 250px;
}

.project-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

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

.project-info {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.project-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-accent);
}

/* ========================================
   ABOUT SECTION
   ======================================== */

.about-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image {
    aspect-ratio: 4 / 5;
    background-color: var(--color-black);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-medium);
}

.about-image:hover {
    transform: scale(1.02);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.contact-simple {
    max-width: 800px;
    text-align: left;
}

.contact-btn {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 1rem 2rem;
    border: none;
    background-color: var(--color-black);
    color: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-lg);
    display: inline-block;
}

.contact-btn:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.contact-btn:active {
    transform: translateY(0);
}

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

.site-footer {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.footer-text {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--color-accent);
    text-align: center;
}

/* ========================================
   RESPONSIVE DESIGN - TABLET
   ======================================== */

@media (max-width: 1024px) {
    :root {
        --container-padding: 1.5rem;
        --spacing-2xl: 4rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

/* ========================================
   RESPONSIVE DESIGN - MOBILE
   ======================================== */

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
        --font-size-title: 2rem;
    }
    
    .site-header {
        padding: var(--spacing-sm) 0;
    }
    
    .header-content {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .logo {
        height: 40px;
    }
    
    /* Show Hamburger Menu */
    .hamburger {
        display: flex;
    }
    
    /* Hide/Show Navigation */
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-bg-white);
        flex-direction: column;
        gap: 0;
        padding: 80px 2rem 2rem 2rem;
        box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
        transition: right var(--transition-medium);
        z-index: 1000;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1rem;
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-border);
        width: 100%;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-image {
        order: -1;
    }
    
    .section-description {
        font-size: var(--font-size-body);
    }
    
    .filter-buttons {
        justify-content: center;
        margin: var(--spacing-md) 0;
    }
    
    .filter-btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8125rem;
        flex: 1 1 auto;
        min-width: 80px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-text {
        order: -1;
    }
    
    .footer-text {
        font-size: 0.8125rem;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

.project-card {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }

/* ========================================
   UTILITY CLASSES
   ======================================== */

.hidden {
    display: none !important;
}

/* ========================================
   PROJECT DETAIL PAGES (GRAFIK, ILLUSTRATION, KUNST)
   ======================================== */

/* Hero Section für Detail-Seiten */
.project-hero {
    height: 400px;
    background-color: var(--color-black);
    position: relative;
    overflow: hidden;
}

.project-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-hero-bg:hover {
    transform: scale(1.02);
}

/* Projects Detail Section */
.projects-detail-section {
    background-color: var(--color-bg-white);
}

.project-detail {
    padding: var(--spacing-3xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.project-detail:last-child {
    border-bottom: none;
}

.project-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.project-detail-text {
    max-width: 600px;
}

/* Gallery Styling */
.project-detail-gallery {
    position: relative;
}

.gallery-container {
    position: relative;
    background-color: var(--color-bg-white);
    height: 700px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-slides {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) 0;
}

.gallery-slide.active {
    opacity: 1;
    pointer-events: auto;
}

.gallery-slide img {
    max-width: 100%;
    max-height: 700px;
    width: auto;
    height: auto;
    object-fit: contain;
    cursor: pointer;
    display: block;
}

/* Gallery Navigation Buttons */
.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-fast);
    color: var(--color-text);
}

.gallery-nav:hover {
    background-color: var(--color-white);
    transform: translateY(-50%) scale(1.1);
}

.gallery-nav svg {
    width: 24px;
    height: 24px;
}

.gallery-prev {
    left: 20px;
}

.gallery-next {
    right: 20px;
}

/* Gallery Indicators */
.gallery-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.gallery-indicator {
    width: 40px;
    height: 4px;
    background-color: rgba(40, 40, 40, 0.2);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.gallery-indicator.active {
    background-color: var(--color-text);
}

/* Active Navigation Link */
.nav-link.active {
    color: var(--color-black);
}

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

/* ========================================
   RESPONSIVE - PROJECT DETAIL PAGES
   ======================================== */

@media (max-width: 768px) {
    .project-hero {
        height: 250px;
    }
    
    .project-detail {
        padding: var(--spacing-xl) 0;
    }
    
    .project-detail-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    /* Mobile: Text immer oben */
.project-detail[data-layout="left"] .project-detail-content {
    grid-template-columns: 1fr;
}

.project-detail[data-layout="right"] .project-detail-content {
    grid-template-columns: 1fr;
}

.project-detail-text {
    order: -1;
}
    
    .gallery-container {
    min-height: 300px;
}
    
    .gallery-nav {
        width: 40px;
        height: 40px;
        opacity: 0.7;
    }
    
    .gallery-prev {
        left: 10px;
    }
    
    .gallery-next {
        right: 10px;
    }
    
    .gallery-nav svg {
        width: 20px;
        height: 20px;
    }

    .gallery-container {
        height: 500px;
    }
    
    .gallery-slide img {
        max-height: 500px;
    }
    
    /* Touch-optimized indicators */
    .gallery-indicator {
        height: 6px;
        width: 30px;
    }
}

/* ========================================
   ART SHOP PAGE (KUNST)
   ======================================== */

/* Art Intro Section */
.art-intro-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-white);
}

/* Art Shop Section */
.art-shop-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.art-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.art-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    display: flex;
    flex-direction: column;
}

.art-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.art-image {
    width: 100%;
    background-color: var(--color-black);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    min-height: 250px;
}

.art-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.art-info {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.art-label {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: var(--font-size-label);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.art-title {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.art-price {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.art-btn {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.875rem 1.5rem;
    border: none;
    width: 100%;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.art-btn-reserve {
    background-color: var(--color-black);
    color: var(--color-white);
}

.art-btn-reserve:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.art-btn-reserve:active {
    transform: translateY(0);
}

.art-btn-sold {
    background-color: var(--color-accent);
    color: var(--color-white);
    cursor: not-allowed;
    opacity: 0.6;
}

.art-btn-sold:hover {
    background-color: var(--color-accent);
    transform: none;
}

/* Sold Card styling */
.art-card[data-status="sold"] {
    opacity: 0.8;
}

.art-card[data-status="sold"]:hover {
    transform: translateY(-4px);
}

/* ========================================
   RESPONSIVE - ART SHOP PAGE
   ======================================== */

@media (max-width: 768px) {
    .art-intro-section {
        padding: var(--spacing-xl) 0;
    }
    
    .art-shop-section {
        padding: var(--spacing-xl) 0;
    }
    
    .art-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .art-btn {
        font-size: 0.8125rem;
        padding: 0.75rem 1.25rem;
    }

    /* ========================================
   LEGAL PAGES (IMPRESSUM & DATENSCHUTZ)
   ======================================== */

.legal-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-white);
    min-height: 60vh;
}

.legal-content {
    max-width: 900px;
}

.legal-subtitle {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin: var(--spacing-xl) 0 var(--spacing-md) 0;
    line-height: 1.3;
}

.legal-heading {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.legal-text {
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.legal-list {
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: 1.8;
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.legal-list li {
    margin-bottom: var(--spacing-sm);
}

.legal-link {
    color: var(--color-text);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.legal-link:hover {
    color: var(--color-black);
}

.footer-link {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .legal-section {
        padding: var(--spacing-xl) 0;
    }
    
    .legal-subtitle {
        font-size: 1.25rem;
    }
}
}