/* ==========================================
   Rudolf Wohnbau - Modern Real Estate Website
   ========================================== */

/* CSS Custom Properties */
:root {
    /* Brand Colors - Rudolf (steel/rust from Metallbau) */
    --color-primary: #3a3a41;       /* Steel-900 - industrial, professional */
    --color-primary-light: #4c4d58; /* Steel-700 */
    --color-primary-dark: #26262b;  /* Steel-950 */
    --color-accent: #d15532;        /* Rust-600 - warm, energetic */
    --color-accent-light: #ee9577;  /* Rust-400 */
    --color-accent-dark: #913b24;   /* Rust-800 */
    --color-success: #38a169;       /* Green - availability */
    --color-warning: #dd6b20;       /* Orange - limited */
    --color-danger: #c53030;        /* Red - sold */

    /* Neutral colors */
    --color-white: #ffffff;
    --color-off-white: #f7fafc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-400: #a0aec0;
    --color-gray-500: #718096;
    --color-gray-600: #4a5568;
    --color-gray-700: #2d3748;
    --color-gray-800: #1a202c;
    --color-gray-900: #171923;

    /* Text colors (WCAG AA contrast on white background) */
    --color-text: #1f2937;
    --color-text-light: #374151;
    --color-text-muted: #4b5563;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Montserrat', system-ui, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Layout */
    --container-max: 1400px;
    --header-height: 80px;

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
    font-size: 16px;
}

/* Accessibility: skip to main content link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-white);
    padding: 12px 20px;
    z-index: 10001;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 6px 0;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--color-white);
    outline-offset: -4px;
}

/* Visible keyboard focus indicators (WCAG 2.4.7 Focus Visible) */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Screen-reader-only utility class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Scale up base font size on large screens so all rem-based sizes grow proportionally */
@media (min-width: 1400px) {
    html { font-size: 17px; }
}
@media (min-width: 1700px) {
    html { font-size: 18px; }
}
@media (min-width: 2000px) {
    html { font-size: 19px; }
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    z-index: 1000;
    transition: all var(--transition-base);
    border-bottom: 1px solid var(--color-gray-200);
}

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

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 60px;
    width: auto;
    transition: transform var(--transition-fast);
    object-fit: contain;
}

.logo:hover .logo-img {
    transform: scale(1.02);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

.nav-cta {
    background: var(--color-accent);
    color: var(--color-white) !important;
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    border-radius: var(--border-radius-md);
    font-weight: 600;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: var(--color-accent-dark);
    color: var(--color-white) !important;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

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

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

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

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

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: min(100vh, 900px);
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    padding-bottom: var(--spacing-2xl);
    overflow: hidden;
}

/* Below the natural content height, drop the min-height so we don't get blank space */
@media (max-width: 1024px) {
    .hero {
        min-height: 0;
    }
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -2;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 35%;  /* Show more of the building (slightly above center) */
}

/* On wider screens where the building gets clipped, show the full image */
@media (min-width: 900px) {
    .hero-bg img {
        object-fit: contain;
        object-position: center;
        background: #c5d4dc;  /* Sky-tone backdrop matches the rendering */
    }
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(38, 38, 43, 0.62) 0%, rgba(38, 38, 43, 0.38) 40%, rgba(38, 38, 43, 0.1) 100%);
}

/* Add a stronger text shadow on hero content to keep text readable over the lighter overlay */
.hero-title,
.hero-subtitle {
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.55);
}

.hero-content {
    position: relative;
    max-width: 820px;
    color: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-accent);
    border-radius: 50px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4.5vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-title .highlight {
    color: var(--color-white);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 1.5vw, 1.5rem);
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero-features-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin-top: var(--spacing-2xl);
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: clamp(1.125rem, 1.5vw, 1.625rem);
    font-weight: 500;
}

.hero-feature svg {
    width: clamp(28px, 2.5vw, 38px);
    height: clamp(28px, 2.5vw, 38px);
    stroke: var(--color-accent);
    flex-shrink: 0;
}

/* ==========================================
   Section Styles
   ========================================== */
.section {
    padding: var(--spacing-4xl) 0;
}

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

.section.bg-dark {
    background: var(--color-primary);
    color: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
}

/* Larger variant — used for the Referenzen tag on homepage */
#referenzen .section-tag {
    font-size: clamp(1rem, 1.4vw, 1.375rem);
    letter-spacing: 3px;
    margin-bottom: var(--spacing-lg);
}

/* Hide sold units on mobile — keep them only on tablet+ where horizontal space allows */
@media (max-width: 768px) {
    .unit-card:has(.unit-status.sold) {
        display: none;
    }
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3.2vw, 3.5rem);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-title-xl {
    font-size: clamp(2.25rem, 4.5vw, 4.5rem);
}

.section.bg-dark .section-title {
    color: var(--color-white);
}

.section-subtitle {
    font-size: clamp(1rem, 1.2vw, 1.375rem);
    color: var(--color-text-light);
    line-height: 1.7;
}

.section.bg-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* ==========================================
   USP / Benefits Section
   ========================================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.benefit-card {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.benefit-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--color-white);
}

.benefit-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.benefit-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ==========================================
   Projects Section
   ========================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.project-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    touch-action: pan-y;
}

@media (hover: hover) {
    .project-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
    }
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

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

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

.project-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-success);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-badge.limited {
    background: var(--color-warning);
}

.project-badge.sold {
    background: var(--color-danger);
}

.project-badge.planning {
    background: var(--color-primary);
}

.project-badge.construction {
    background: #d97706;
}

.project-content {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.project-location {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.project-location svg {
    width: 16px;
    height: 16px;
    margin-top: 3px;
    flex-shrink: 0;
}

.project-location-text {
    display: flex;
    flex-direction: column;
    line-height: 1.4;
}

.project-location-city {
    font-weight: 600;
    color: var(--color-primary);
}

.project-location-detail {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    min-height: 64px;
    line-height: 1.3;
}

.project-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: auto;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.project-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.project-detail svg {
    width: 18px;
    height: 18px;
    stroke: var(--color-accent);
}

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

.price-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.price-value {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-accent);
}

.project-actions {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    min-height: 133px;
}

.project-cta {
    display: block;
    width: 100%;
    text-align: center;
}

/* ==========================================
   Unit Listing
   ========================================== */
.units-section {
    background: var(--color-off-white);
}

.units-grid {
    display: grid;
    gap: var(--spacing-md);
}

.unit-card {
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    gap: var(--spacing-xl);
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.unit-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.unit-number {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    min-width: 80px;
}

.unit-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.unit-type {
    font-weight: 600;
    color: var(--color-text);
}

.unit-features {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.unit-size {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    min-width: 100px;
    text-align: center;
}

.unit-status {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    min-width: 100px;
    text-align: center;
}

.unit-status.available {
    background: rgba(56, 161, 105, 0.1);
    color: var(--color-success);
}

.unit-status.reserved {
    background: rgba(221, 107, 32, 0.1);
    color: var(--color-warning);
}

.unit-status.sold {
    background: rgba(197, 48, 48, 0.1);
    color: var(--color-danger);
}

.unit-cta .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
}

/* ==========================================
   Features Section
   ========================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.feature-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    background: rgba(209, 85, 50, 0.1);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-accent);
}

.feature-content h3 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ==========================================
   References Section
   ========================================== */
.references-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.reference-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    touch-action: pan-y;
}

@media (hover: hover) {
    .reference-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
    }
}

.reference-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

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

@media (hover: hover) {
    .reference-card:hover .reference-image img {
        transform: scale(1.05);
    }
}

.reference-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.reference-badge.sold {
    background: var(--color-accent);
}

.reference-badge.rented {
    background: #2d6a4f;
}

.reference-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.reference-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.reference-location svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.reference-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    min-height: 42px;
}

.reference-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ==========================================
   Project Detail: Gallery, Description, Documents
   ========================================== */
.project-description {
    max-width: 900px;
    margin: 0 auto;
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text);
}

.project-map {
    height: 450px;
    background: var(--color-gray-200);
    margin-top: var(--spacing-2xl);
}

.project-map iframe {
    display: block;
}

.project-description p {
    margin-bottom: var(--spacing-md);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

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

@media (max-width: 600px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

.gallery-item {
    display: block;
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: none;
    padding: 0;
    background: none;
    cursor: zoom-in;
    width: 100%;
}

@media (hover: hover) {
    .gallery-item:hover {
        transform: scale(1.02);
        box-shadow: var(--shadow-xl);
    }
}

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

/* Sold units: dimmed (not clickable) */
.unit-card:has(.unit-status.sold) {
    opacity: 0.55;
}

.unit-card:has(.unit-status.sold):hover {
    opacity: 0.7;
}

.unit-sold-note {
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    padding: 0 var(--spacing-md);
}

/* Sales contact item highlight (Anita Hoffmann / VERKAUF) */
.contact-item-sales .contact-icon {
    background: var(--color-accent);
    color: var(--color-white);
}

.contact-item-sales h4 {
    color: var(--color-accent);
    letter-spacing: 1px;
}

/* Unified person card: Position - Name - Email - Telefon */
.contact-item-person h4 {
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: var(--font-size-sm);
    color: var(--color-accent);
}

/* Office (Büro) icon — red, same as Verkauf for visual consistency between person cards */
.contact-item-person:not(.contact-item-sales) .contact-icon {
    background: var(--color-accent);
    color: var(--color-white);
}

.contact-item-person .contact-person-lines {
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1.4;
}

.contact-person-name {
    font-weight: 600;
    color: var(--color-primary);
}

.contact-person-email,
.contact-person-phone {
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

/* Unit detail (expandable) */
.unit-price {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-accent);
    text-align: right;
}

.unit-detail {
    grid-column: 1 / -1;
    display: none;
    margin: calc(var(--spacing-md) * -0.5) 0 var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-top: 3px solid var(--color-accent);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    animation: unitDetailIn 0.2s ease-out;
}

.unit-detail.open {
    display: block;
}

@keyframes unitDetailIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.unit-detail-inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
}

@media (max-width: 768px) {
    .unit-detail-inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: var(--spacing-lg);
    }
}

.unit-detail-plan {
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.unit-detail-plan-image {
    display: block;
    position: relative;
    background: var(--color-off-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: zoom-in;
}

.unit-detail-plan-image img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    background: white;
}

.unit-detail-plan-placeholder {
    aspect-ratio: 4/3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
}

.unit-detail-plan-placeholder svg {
    width: 48px;
    height: 48px;
}

.unit-detail-plan-overlay {
    position: absolute;
    inset: auto 0 0 0;
    padding: var(--spacing-sm);
    background: rgba(38, 38, 43, 0.85);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    text-align: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

@media (hover: hover) {
    .unit-detail-plan-image:hover {
        border-color: var(--color-accent);
        box-shadow: var(--shadow-md);
    }
    .unit-detail-plan-image:hover .unit-detail-plan-overlay {
        opacity: 1;
    }
}

.unit-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    background: var(--color-off-white);
    align-items: center;
}

.unit-detail-actions .btn {
    flex: 0 0 auto;
}

/* The plan-image button needs button reset */
button.unit-detail-plan-image {
    border: 1px solid var(--color-gray-200);
    padding: 0;
    cursor: zoom-in;
    width: 100%;
}

/* ==========================================
   Lightbox (floor plan / gallery preview)
   Near-full-screen with persistent close button
   ========================================== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 18, 0.96);
    z-index: 9999;
    display: none;
    flex-direction: column;
    padding: 16px;
    animation: lightboxIn 0.18s ease-out;
}

.lightbox.open {
    display: flex;
}

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

/* Top bar: caption (left) + close button (right) */
.lightbox-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 4px 8px;
    color: var(--color-white);
    flex-shrink: 0;
}

.lightbox-caption {
    font-size: var(--font-size-base);
    font-weight: 500;
    opacity: 0.92;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lightbox-close {
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
    font-size: 28px;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Stage fills the rest of the screen - this is what the user sees most of */
.lightbox-stage {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 0;  /* Critical: lets flex child actually shrink */
    padding: 8px 0;
}

.lightbox-img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    background: var(--color-white);
    border-radius: var(--border-radius-md);
    cursor: zoom-out;
}

/* Bottom bar: PDF button + hint */
.lightbox-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
    flex-shrink: 0;
}

.lightbox-bar-hint {
    opacity: 0.7;
}

.lightbox-pdf[hidden] {
    display: none !important;
}

@media (max-width: 600px) {
    .lightbox {
        padding: 8px;
    }
    .lightbox-caption {
        font-size: var(--font-size-sm);
    }
}

.unit-detail-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.unit-detail-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    line-height: 1.65;
    margin-bottom: var(--spacing-lg);
}

.unit-detail-desc p {
    margin: 0 0 var(--spacing-lg) 0;
}

.unit-detail-desc p:last-child {
    margin-bottom: 0;
}

.unit-detail-desc p strong {
    color: var(--color-primary);
    display: inline-block;
    margin-right: 0.25em;
}

.unit-detail-specs {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    margin: 0;
}

.unit-detail-specs dt {
    color: var(--color-text-muted);
    font-weight: 500;
}

.unit-detail-specs dd {
    color: var(--color-text);
    font-weight: 600;
    margin: 0;
}

.documents-details {
    width: 100%;
}

/* ==========================================
   Baubeschreibung — card grid
   ========================================== */
.bau-details {
    width: 100%;
}

.bau-summary {
    cursor: pointer;
    list-style: none;
    margin-bottom: var(--spacing-2xl);
    user-select: none;
}

.bau-summary::-webkit-details-marker { display: none; }
.bau-summary::marker { display: none; }

.bau-details[open] .documents-chevron {
    transform: rotate(180deg);
}

.bau-summary:hover .section-title {
    color: var(--color-accent);
}

.bau-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    animation: docsIn 0.3s ease-out;
}

.bau-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

@media (hover: hover) {
    .bau-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-md);
        border-color: var(--color-accent);
    }
}

.bau-card-icon {
    width: 56px;
    height: 56px;
    background: rgba(204, 6, 5, 0.1);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.bau-card-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-accent);
}

.bau-card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.bau-card-body {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    line-height: 1.6;
}

.bau-card-body ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.bau-card-body li {
    position: relative;
    padding-left: 1.25em;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-muted);
}

.bau-card-body li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent);
    font-weight: 700;
}

.bau-card-body p {
    margin-bottom: var(--spacing-sm);
}

.documents-summary {
    cursor: pointer;
    list-style: none;
    margin-bottom: var(--spacing-2xl);
    user-select: none;
}

.documents-summary::-webkit-details-marker {
    display: none;
}

.documents-summary::marker {
    display: none;
}

.documents-chevron {
    width: 32px;
    height: 32px;
    margin-left: var(--spacing-md);
    vertical-align: middle;
    color: var(--color-accent);
    transition: transform var(--transition-base);
}

.documents-details[open] .documents-chevron {
    transform: rotate(180deg);
}

.documents-summary:hover .section-title {
    color: var(--color-accent);
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    animation: docsIn 0.3s ease-out;
}

@keyframes docsIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

.document-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

@media (hover: hover) {
    .document-card:hover {
        border-color: var(--color-accent);
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }
}

.document-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--color-accent);
}

.document-icon svg {
    width: 100%;
    height: 100%;
}

.document-info h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.document-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ==========================================
   Hero Seals (Siegel right of features, big quality stamps)
   ========================================== */
.hero-seals {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-lg);
    flex-shrink: 0;
}

.hero-seal {
    width: clamp(120px, 13vw, 200px);
    height: clamp(120px, 13vw, 200px);
    flex-shrink: 0;
    filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.5));
    transition: transform var(--transition-base);
}

@media (hover: hover) {
    .hero-seal:hover {
        transform: scale(1.05);
    }
}

.hero-seal img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

@media (max-width: 768px) {
    .hero-seals {
        justify-content: center;
        gap: var(--spacing-md);
    }
    .hero-seal {
        width: 100px;
        height: 100px;
    }
}

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

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

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(209, 85, 50, 0.1);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    text-align: center;
    color: var(--color-white);
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.cta-section .btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.cta-section .btn-primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
}

/* ==========================================
   Contact Section
   ========================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-4xl);
}

.contact-info .section-tag,
.contact-info .section-title {
    text-align: left;
}

.contact-text {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
}

.contact-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: var(--border-radius-md);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-white);
}

.contact-item-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-item-content p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

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

.contact-item-content a:hover {
    text-decoration: underline;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-off-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-xl);
}

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

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.1);
}

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

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.form-checkbox input {
    width: auto;
    margin-top: 4px;
}

.form-checkbox label {
    font-weight: 400;
    color: var(--color-text-light);
}

.form-checkbox a {
    color: var(--color-accent);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    background: var(--color-gray-900);
    color: var(--color-white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-img {
    margin-bottom: var(--spacing-lg);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-projects ul {
    gap: 0;
}

.footer-projects li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.footer-projects li:first-child {
    border-top: 1px solid rgba(255, 255, 255, 0.25);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

.footer-legal a:hover {
    color: var(--color-white);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: calc(var(--header-height) + var(--spacing-xl)) var(--spacing-xl) var(--spacing-xl);
        gap: 0;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
    }

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

    .nav-link {
        display: block;
        width: 100%;
        padding: var(--spacing-md) 0;
        font-size: var(--font-size-lg);
        border-bottom: 1px solid var(--color-gray-200);
    }

    .nav-cta {
        margin-top: var(--spacing-lg);
        text-align: center;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Hero - tighter spacing on mobile */
    .hero {
        min-height: auto;
    }

    .hero-content {
        text-align: center;
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }

    .hero-badge {
        margin-bottom: var(--spacing-md);
    }

    .hero-title {
        margin-bottom: var(--spacing-md);
    }

    .hero-subtitle {
        margin-bottom: var(--spacing-lg);
    }

    .hero-buttons {
        justify-content: center;
        margin-bottom: var(--spacing-lg);
    }

    .hero-features-row {
        padding-top: var(--spacing-lg);
        margin-top: var(--spacing-lg);
        gap: var(--spacing-lg);
        justify-content: center;
    }

    .hero-features {
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .hero-feature {
        font-size: var(--font-size-base);
    }

    .hero-feature svg {
        width: 22px;
        height: 22px;
    }

    /* Sections */
    .benefits-grid,
    .projects-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Units */
    .unit-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }

    .unit-number,
    .unit-size {
        text-align: center;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

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

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        margin-left: auto;
        margin-right: auto;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn-large {
        padding: var(--spacing-md) var(--spacing-xl);
    }
}

/* ==========================================
   Utilities
   ========================================== */
.text-center {
    text-align: center;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }