/* ===================================
   CSS VARIABLES & RESET
   =================================== */

:root {
    /* Colors */
    --color-primary: #1a1a1a;
    --color-secondary: #f5f5f5;
    --color-accent: #8b7355;
    --color-text: #2c2c2c;
    --color-text-light: #666;
    --color-background: #ffffff;
    --color-overlay: rgba(0, 0, 0, 0.3);

    /* Typography */
    --font-primary: Arial, Helvetica, sans-serif;
    --font-display: Arial, Helvetica, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Layout */
    --max-width: 1400px;
    --nav-height: 80px;

    /* Transitions */
    --transition-speed: 0.3s;
    --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

a:hover {
    opacity: 0.7;
}

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

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

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

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: bold;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    text-transform: lowercase;
}

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #ffffff;
    z-index: 1000;
    transition: all var(--transition-speed) var(--transition-ease);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: bold;
    text-transform: lowercase;
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.03em;
    text-transform: lowercase;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-primary);
    transition: width var(--transition-speed) var(--transition-ease);
}

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

.nav-link.active {
    font-weight: bold;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

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

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

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: var(--nav-height);
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85);
}

.hero-overlay {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: bold;
    text-transform: lowercase;
    letter-spacing: 0.05em;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.3);
}


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

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

.about .container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-content {
    padding-right: var(--spacing-md);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    color: var(--color-text);
    line-height: 1.8;
}

.about-image {
    position: sticky;
    top: calc(var(--nav-height) + var(--spacing-md));
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 2px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* ===================================
   PORTFOLIO SECTIONS
   =================================== */

.portfolio-section {
    background-color: var(--color-background);
}

.portfolio-section:nth-child(even) {
    background-color: var(--color-secondary);
}

.series-description {
    max-width: 900px;
    margin-bottom: var(--spacing-lg);
}

.series-description p {
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
}

/* ===================================
   GALLERY GRID
   =================================== */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 2px;
    background-color: #f9f9f9;
    transition: transform var(--transition-speed) var(--transition-ease);
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item-large {
    grid-column: span 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--transition-ease);
}

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

.artwork-info {
    padding: var(--spacing-md);
    background-color: white;
}

.artwork-info h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.artwork-info p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ===================================
   CONTACT SECTION (PAGE 3)
   =================================== */

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.contact-intro {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    text-transform: lowercase;
}

.contact-details {
    margin-bottom: var(--spacing-lg);
}

.contact-details p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.contact-details a {
    color: var(--color-text);
    transition: all var(--transition-speed) var(--transition-ease);
}

.contact-details a:hover {
    color: var(--color-accent);
    opacity: 1;
}

.contact-image {
    position: sticky;
    top: calc(var(--nav-height) + var(--spacing-md));
}

.contact-image img {
    width: 100%;
    height: auto;
    border-radius: 2px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* ===================================
   CONTACT FORM
   =================================== */

.contact-form {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-speed) var(--transition-ease);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(139, 115, 85, 0.1);
}

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

.btn-submit {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 14px 40px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    border-radius: 10px;
    transition: all var(--transition-speed) var(--transition-ease);
    text-transform: uppercase;
}

.btn-submit:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

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

.impressum,
.datenschutz {
    background-color: var(--color-secondary);
    padding: var(--spacing-md) 0;
}

.impressum .section-title,
.datenschutz .section-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.legal-content {
    max-width: 700px;
    margin: 0 auto;
    font-size: 0.75rem;
}

.legal-content p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    font-size: 0.75rem;
}

.legal-content h3 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: bold;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    text-transform: lowercase;
}

.legal-content strong {
    font-weight: bold;
    font-size: 0.75rem;
}

.legal-content em {
    color: var(--color-text-light);
    font-size: 0.7rem;
}

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

.footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

.footer p {
    font-size: 0.9rem;
    opacity: 0.8;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.footer-links a {
    color: white;
    font-size: 0.85rem;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-speed) var(--transition-ease);
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-links span {
    opacity: 0.5;
    font-size: 0.85rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
    .about .container {
        grid-template-columns: 1fr;
    }

    .about-image {
        position: relative;
        top: 0;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .gallery-item-large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background-color: white;
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-md);
        transition: left var(--transition-speed) var(--transition-ease);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    }

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

    .hamburger {
        display: flex;
    }

    .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);
    }

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

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

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

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .footer-links span {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .contact-form {
        padding: var(--spacing-md);
    }

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


/* ===================================
   LOADING STATE
   =================================== */

.loading {
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid var(--color-secondary);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* ===================================
   THUMBNAIL GRIDS
   =================================== */

.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.thumbnail-grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.thumbnail-grid a {
    display: block;
    cursor: pointer;
}

.thumbnail-grid img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 2px;
    transition: transform var(--transition-speed) var(--transition-ease);
}

.thumbnail-grid-2 img {
    height: 400px;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    background-color: var(--color-secondary);
}

.thumbnail-grid a:hover img {
    transform: scale(1.02);
    opacity: 0.9;
}

/* ===================================
   ARTWORK PAGES
   =================================== */

.artwork-page {
    background-color: var(--color-background);
}

.container-full {
    max-width: 100%;
    padding: 0;
}

.artwork-full {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.artwork-full img {
    width: 100%;
    height: auto;
    margin-bottom: var(--spacing-md);
}

.artwork-caption {
    padding: var(--spacing-md) 0;
}

.artwork-caption h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

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

/* ===================================
   HARMONY AND OBJECTS IMAGES
   =================================== */

.harmony-images,
.objects-images {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.harmony-images a,
.objects-images a {
    display: block;
    cursor: pointer;
}

.harmony-images img,
.objects-images img {
    width: 100%;
    height: auto;
    border-radius: 2px;
    transition: transform var(--transition-speed) var(--transition-ease), opacity var(--transition-speed) var(--transition-ease);
}

.harmony-images a:hover img,
.objects-images a:hover img {
    transform: scale(1.02);
    opacity: 0.9;
}

.objects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: end;
}

.objects-grid img {
    width: 100%;
    height: auto;
}

/* ===================================
   RESPONSIVE UPDATES FOR NEW LAYOUTS
   =================================== */

@media (max-width: 1024px) {
    .thumbnail-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .thumbnail-grid {
        grid-template-columns: 1fr;
    }

    .thumbnail-grid-2 {
        grid-template-columns: 1fr;
    }

    .harmony-images,
    .objects-images {
        grid-template-columns: 1fr;
    }

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