@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300..700;1,300..700&family=Playfair+Display:ital,wght@0,400..900;1,400..900&family=Plus+Jakarta+Sans:ital,wght@0,200..800;1,200..800&display=swap');

/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg: #FAF8F5;
    --color-text: #1C1B1A;
    --color-text-muted: #6E6D6A;
    --color-accent: #A88863;
    --color-accent-dark: #8E704D;
    --color-accent-light: #DFD7CC;
    --color-surface: #FFFFFF;
    --color-surface-tint: #F3EFE9;
    --color-border: #E5DFD5;
    --color-error: #B23B3B;
    --color-success: #3D7A5A;

    /* Glassmorphism */
    --glass-bg: rgba(250, 248, 245, 0.85);
    --glass-border: rgba(229, 223, 213, 0.4);
    --glass-blur: 15px;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-subheading: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --space-xxs: 0.25rem;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-xxl: 8rem;

    /* Borders & Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --border-width: 1px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(28, 27, 26, 0.04);
    --shadow-md: 0 10px 30px rgba(28, 27, 26, 0.06);
    --shadow-lg: 0 20px 50px rgba(28, 27, 26, 0.1);

    /* Animation Transitions */
    --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-medium: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg);
    color: var(--color-text);
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text);
}

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

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

button,
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ==========================================================================
   REUSABLE UTILITIES & LAYOUTS
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.section-padding {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .section-padding {
        padding-top: var(--space-xxl);
        padding-bottom: var(--space-xxl);
    }
}

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

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

.section-title-wrap {
    margin-bottom: var(--space-lg);
    text-align: center;
}

.section-subtitle {
    font-family: var(--font-subheading);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 3.5rem;
    }
}

/* Fine Decorative Lines */
.divider-line {
    width: 100%;
    height: 1px;
    background-color: var(--color-border);
    margin: var(--space-lg) 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

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

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

.btn-secondary {
    border: var(--border-width) solid var(--color-text);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
    transform: translateY(-2px);
}

/* ==========================================================================
   NAVIGATION (GLASSMORPHISM)
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: var(--border-width) solid var(--glass-border);
    background-color: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transition: background-color var(--transition-fast), padding var(--transition-fast);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    transition: height var(--transition-fast);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 48px;
    width: auto;
}

.logo-accent {
    color: var(--color-accent);
}

.nav-menu {
    display: none;
}

.nav-item {
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    position: relative;
    padding: var(--space-xxs) 0;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

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

.nav-contact-btn {
    display: none;
}

/* Menu Toggle Button for Mobile */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 16px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Desktop nav layout */
@media (min-width: 992px) {
    .nav-menu {
        display: flex;
        list-style: none;
        gap: var(--space-md);
    }

    .nav-contact-btn {
        display: inline-flex;
        gap: var(--space-xs);
        align-items: center;
        font-weight: 500;
        font-size: 0.9rem;
    }

    .nav-contact-btn:hover {
        color: var(--color-accent);
    }

    .menu-toggle {
        display: none;
    }
}

/* Mobile Nav Menu Active Style */
.nav-menu-mobile {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    list-style: none;
    z-index: 999;
    transition: right var(--transition-medium);
}

.nav-menu-mobile.active {
    right: 0;
}

.nav-menu-mobile .nav-item {
    font-size: 1.5rem;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ==========================================================================
   HERO SECTION (SPLIT SCREEN EDITORIAL)
   ========================================================================== */
.hero {
    min-height: 100vh;
    padding-top: 100px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
    width: 100%;
}

@media (min-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
}

.hero-content {
    max-width: 540px;
    z-index: 2;
}

.hero-subtitle {
    font-family: var(--font-subheading);
    font-style: italic;
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.hero-title {
    font-size: 2.25rem;
    font-weight: 300;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    text-transform: uppercase;

}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.25rem;
    }
}

@media (min-width: 992px) {
    .hero-title {
        font-size: 2.75rem;
    }
}

@media (min-width: 1200px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

.hero-description {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.hero-image-container {
    position: relative;
    width: 100%;
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-xs);
    background-color: var(--color-surface);
}

.hero-image-wrap {
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/5;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.hero-image-container:hover .hero-image {
    transform: scale(1.03);
}

/* ==========================================================================
   ABOUT / PORTRAIT SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
}

@media (min-width: 992px) {
    .about-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: var(--space-xl);
    }
}

.about-text {
    font-size: 1.15rem;
    line-height: 1.8;
}

.about-highlight {
    font-family: var(--font-subheading);
    font-style: italic;
    font-size: 1.75rem;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    line-height: 1.4;
    border-left: 2px solid var(--color-accent);
    padding-left: var(--space-sm);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    background-color: var(--color-surface-tint);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--color-accent);
    display: block;
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

/* ==========================================================================
   SERVICES (LEISTUNGEN)
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

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

@media (min-width: 1200px) {
    .services-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.service-card {
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.service-icon-wrap {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background-color: var(--color-bg);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.service-card:hover .service-icon-wrap {
    background-color: var(--color-accent-light);
}

.service-icon-wrap img {
    width: 28px;
    height: 28px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    font-weight: 400;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.service-link {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    margin-top: auto;
}

.service-link span {
    transition: transform var(--transition-fast);
}

.service-link:hover span {
    transform: translateX(4px);
}

/* ==========================================================================
   BEFORE/AFTER SLIDER (VORHER-NACHHER)
   ========================================================================== */
.slider-section {
    background-color: var(--color-surface-tint);
}

.slider-container {
    max-width: 800px;
    margin: 0 auto;
}

.slider-description {
    max-width: 600px;
    margin: 0 auto var(--space-lg) auto;
    text-align: center;
    color: var(--color-text-muted);
}

.before-after-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border: var(--border-width) solid var(--color-border);
    overflow: hidden;
    user-select: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.slider-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-img-before {
    /* Always fully visible, will be overlaid */
}

.slider-img-after-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    /* JS will change this */
    height: 100%;
    overflow: hidden;
}

.slider-img-after-container .slider-img {
    width: 800px;
    /* Must match container parent width, JS handles resize */
}

.slider-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    /* JS will change this */
    width: 2px;
    background-color: var(--color-surface);
    cursor: ew-resize;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.slider-handle-button {
    width: 44px;
    height: 44px;
    background-color: var(--color-accent);
    color: var(--color-surface);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    cursor: ew-resize;
    font-size: 1.25rem;
}

.slider-label {
    position: absolute;
    bottom: 20px;
    padding: var(--space-xs) var(--space-sm);
    background-color: rgba(28, 27, 26, 0.7);
    color: var(--color-surface);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    z-index: 5;
}

.slider-label-before {
    left: 20px;
}

.slider-label-after {
    right: 20px;
}

/* ==========================================================================
   BODENPLANER (FLOOR CONFIGURATOR)
   ========================================================================== */
.configurator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
}

@media (min-width: 992px) {
    .configurator-grid {
        grid-template-columns: 1.1fr 0.9fr;
        gap: var(--space-xl);
    }
}

.configurator-preview {
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-xs);
    background-color: var(--color-surface);
    position: relative;
    border-radius: var(--radius-md);
}

.configurator-preview-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.configurator-preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-fast);
}

.configurator-preview-overlay {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
    background-color: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: var(--border-width) solid var(--glass-border);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    max-width: 280px;
}

.config-overlay-title {
    font-size: 1.1rem;
    font-family: var(--font-heading);
    margin-bottom: var(--space-xxs);
}

.config-overlay-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.config-group {
    margin-bottom: var(--space-md);
}

.config-group-title {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
    color: var(--color-text-muted);
}

.config-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.config-option {
    padding: var(--space-xs) var(--space-sm);
    border: var(--border-width) solid var(--color-border);
    background-color: var(--color-surface);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.config-option:hover {
    border-color: var(--color-accent);
}

.config-option.active {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-surface);
}

/* ==========================================================================
   PROJECT GALLERY
   ========================================================================== */
.gallery-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.gallery-filter {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.gallery-filter:hover,
.gallery-filter.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 576px) {
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 992px) {
    .gallery-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.gallery-item {
    position: relative;
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-xs);
    background-color: var(--color-surface);
    cursor: pointer;
    transition: transform var(--transition-fast);
    display: block;
    /* For dynamic filters */
}

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

.gallery-item-wrap {
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/3;
}

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(28, 27, 26, 0.4);
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-fast);
}

.gallery-overlay-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--color-surface);
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transform: scale(0.9);
    transition: transform var(--transition-fast);
}

.gallery-item:hover {
    transform: translateY(-2px);
}

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

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

.gallery-item:hover .gallery-overlay-icon {
    transform: scale(1);
}

.gallery-caption {
    display: none;
    padding: var(--space-sm) var(--space-xs) var(--space-xxs) var(--space-xs);
}

.gallery-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: var(--space-xxs);
}

.gallery-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(28, 27, 26, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 900px;
    width: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-img {
    max-height: 80vh;
    max-width: 100%;
    object-fit: contain;
    border: 4px solid var(--color-surface);
}

.lightbox-caption {
    color: var(--color-surface);
    text-align: center;
    margin-top: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.25rem;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: var(--color-surface);
    font-size: 2rem;
    cursor: pointer;
}

/* ==========================================================================
   PROJECT CALCULATOR (PROJEKT-RECHNER)
   ========================================================================== */
.calculator-section {
    background-color: var(--color-surface-tint);
}

.calculator-card {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
    .calculator-card {
        padding: var(--space-lg);
    }
}

.calc-progress {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    position: relative;
}

.calc-progress::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-border);
    z-index: 1;
}

.calc-progress-bar {
    position: absolute;
    top: 15px;
    left: 0;
    width: 0%;
    /* JS will dynamically change this */
    height: 2px;
    background-color: var(--color-accent);
    z-index: 2;
    transition: width var(--transition-medium);
}

.calc-step-indicator {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 3;
    transition: all var(--transition-fast);
}

.calc-step-indicator.active {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    color: var(--color-surface);
}

.calc-step-indicator.completed {
    border-color: var(--color-accent);
    background-color: var(--color-accent-light);
    color: var(--color-accent-dark);
}

.calc-step {
    display: none;
}

.calc-step.active {
    display: block;
    animation: fadeIn 0.4s ease forwards;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

@media (min-width: 576px) {
    .calc-grid {
        grid-template-columns: 1fr 1fr;
    }
}

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

.calc-card-option {
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-fast);
}

.calc-card-option:hover {
    border-color: var(--color-accent);
    background-color: var(--color-surface-tint);
}

.calc-card-option.active {
    border-color: var(--color-accent);
    background-color: var(--color-accent-light);
}

.calc-card-icon {
    font-size: 2rem;
    margin-bottom: var(--space-xs);
    display: block;
}

.calc-card-title {
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
}

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

.calc-form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-xxs);
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.calc-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    transition: border-color var(--transition-fast);
}

.calc-input:focus {
    border-color: var(--color-accent);
    background-color: var(--color-surface);
}

/* Range Slider Styles */
.calc-range-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.calc-range {
    flex-grow: 1;
    height: 4px;
    background-color: var(--color-border);
    appearance: none;
    -webkit-appearance: none;
    border-radius: var(--radius-full);
}

.calc-range::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background-color: var(--color-accent);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.calc-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.calc-range-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
    min-width: 70px;
    text-align: right;
}

.calc-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-lg);
    border-top: var(--border-width) solid var(--color-border);
    padding-top: var(--space-md);
}

.calc-summary-box {
    background-color: var(--color-surface-tint);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.calc-summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-xs);
    font-size: 0.95rem;
}

.calc-summary-row:last-child {
    margin-bottom: 0;
    border-top: var(--border-width) solid var(--color-border);
    padding-top: var(--space-xs);
    font-weight: 600;
}

.calc-summary-total {
    font-size: 1.25rem;
    color: var(--color-accent);
}

/* ==========================================================================
   CONTACT SECTION (KONTAKT)
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 0.9fr 1.1fr;
        gap: var(--space-xl);
    }
}

.contact-info-wrap {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-info-list {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--color-surface-tint);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-info-content h4 {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xxs);
}

.contact-info-content p,
.contact-info-content a {
    font-size: 1.05rem;
}

.contact-info-content a:hover {
    color: var(--color-accent);
}

.contact-socials {
    display: flex;
    gap: var(--space-xs);
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: var(--border-width) solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

.contact-form {
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

@media (min-width: 768px) {
    .contact-form {
        padding: var(--space-lg);
    }
}

.contact-form-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

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

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group {
    margin-bottom: var(--space-sm);
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xxs);
    color: var(--color-text-muted);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: var(--border-width) solid var(--color-border);
    background-color: var(--color-bg);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    border-color: var(--color-accent);
    background-color: var(--color-surface);
}

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

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background-color: var(--color-text);
    color: var(--color-bg);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-md);
    font-size: 0.9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.2fr 0.8fr 1fr;
    }
}

.footer-brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: var(--space-xs);
}

.footer-brand-logo img {
    height: 48px;
    width: auto;
}

.footer-brand h2 {
    color: var(--color-bg);
    font-size: 1.75rem;
    margin: 0;
}

.footer-brand p {
    color: #9E9D9A;
    max-width: 320px;
}

.footer-links h3,
.footer-contact h3 {
    color: var(--color-bg);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.footer-links-list {
    list-style: none;
}

.footer-links-list li {
    margin-bottom: var(--space-xs);
}

.footer-links-list a {
    color: #9E9D9A;
}

.footer-links-list a:hover {
    color: var(--color-accent);
}

.footer-contact p {
    color: #9E9D9A;
    margin-bottom: var(--space-xs);
}

.footer-contact a {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid #333230;
    padding-top: var(--space-md);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-sm);
    color: #7E7D7A;
    font-size: 0.8rem;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
    }
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-md);
}

.footer-bottom-links a:hover {
    color: var(--color-accent);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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