/* ============================================
   De Zwaan Bouw & Renovatie
   Design System & Global Styles
   ============================================ */

:root {
    /* Brand Colors */
    --color-primary: #FFC200;        /* Gold/Yellow from logo */
    --color-primary-dark: #E0A800;
    --color-primary-light: #FFD54F;
    --color-contrast: #252349;        /* Deep navy */
    --color-contrast-light: #363464;
    --color-grey: #E0E0E0;
    --color-grey-dark: #9E9E9E;
    --color-grey-light: #F5F5F5;
    --color-white: #FFFFFF;
    --color-black: #1A1A2E;
    --color-text: #333340;
    --color-text-light: #6B6B80;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;

    /* Sizes */
    --max-width: 1280px;
    --header-height: 80px;

    /* Transitions */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(37, 35, 73, 0.08);
    --shadow-md: 0 4px 20px rgba(37, 35, 73, 0.1);
    --shadow-lg: 0 8px 40px rgba(37, 35, 73, 0.12);
    --shadow-xl: 0 20px 60px rgba(37, 35, 73, 0.15);

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.nav-open {
    overflow: hidden;
}

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

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

address {
    font-style: normal;
}

/* Visually hidden (accessibility + honeypot) */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-contrast);
    padding: 0.5rem 1.5rem;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    font-weight: 600;
    z-index: 10000;
    transition: top var(--transition);
}
.skip-link:focus {
    top: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 3rem);
}

/* ============================================
   Typography
   ============================================ */

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

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.04em;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 600;
}

em {
    font-style: italic;
    color: var(--color-primary-dark);
}

h1 em, h2 em {
    font-weight: 400;
    color: var(--color-primary-dark);
    letter-spacing: 0;
    text-transform: lowercase;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-xl);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.section-header.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.section-header--light h2,
.section-header--light .section-label,
.section-header--light .section-intro {
    color: var(--color-white);
}
.section-header--light em {
    color: var(--color-primary);
}

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
    position: relative;
}

.section-label::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background: var(--color-primary);
    margin: 0.5rem auto 0;
}

.section-intro {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-top: var(--space-sm);
    line-height: 1.8;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    gap: 0.5rem;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 194, 0, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-contrast);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1.1rem 2.5rem;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.btn-success {
    background: #4CAF50 !important;
    border-color: #4CAF50 !important;
    color: white !important;
}

.text-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-primary-dark);
    gap: 0.25rem;
    transition: gap var(--transition), color var(--transition);
}

.text-link:hover {
    color: var(--color-contrast);
    gap: 0.5rem;
}

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    transition: all var(--transition);
}

.site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(37, 35, 73, 0);
    backdrop-filter: blur(0px);
    transition: all var(--transition);
    z-index: -1;
}

.site-header.scrolled::before {
    background: rgba(37, 35, 73, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.site-header.hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 3rem);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    height: 32px;
    width: auto;
    transition: opacity var(--transition);
}

.logo:hover img {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.nav-menu a {
    display: block;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-white);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0.25rem;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition);
    transform-origin: center;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    transform: scaleX(1);
}

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

.nav-cta {
    background: var(--color-primary) !important;
    color: var(--color-contrast) !important;
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
    margin-left: 0.5rem;
}

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

.nav-cta:hover {
    background: var(--color-primary-dark) !important;
    color: var(--color-contrast) !important;
    transform: translateY(-1px);
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    position: relative;
    transition: all var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

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

.hero-bg picture {
    display: block;
    width: 100%;
    height: 100%;
}

.hero-bg img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.1);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(37, 35, 73, 0.88) 0%,
        rgba(37, 35, 73, 0.7) 40%,
        rgba(37, 35, 73, 0.5) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    padding: calc(var(--header-height) + var(--space-xl)) clamp(1.25rem, 4vw, 3rem) var(--space-xl);
    padding-left: clamp(2rem, 8vw, 8rem);
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

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

.hero-description {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    max-width: 560px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Hero sketch */
.hero-sketch {
    position: absolute;
    right: 8%;
    bottom: 15%;
    z-index: 1;
    opacity: 0.25;
    pointer-events: none;
}

.sketch-house {
    width: 250px;
    height: 250px;
    color: var(--color-primary);
}

/* ============================================
   Services Section
   ============================================ */

.services {
    padding: var(--space-3xl) 0;
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    padding: var(--space-lg) var(--space-md);
    background: var(--color-white);
    border: 1px solid var(--color-grey);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.service-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    color: var(--color-contrast);
}

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

.service-card:hover .service-icon {
    color: var(--color-primary-dark);
}

.service-card h3 {
    margin-bottom: var(--space-sm);
    color: var(--color-contrast);
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ============================================
   Image Strip (horizontal scroll)
   ============================================ */

.image-strip {
    overflow: hidden;
    background: var(--color-contrast);
    padding: 6px 0;
}

.strip-scroll {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    cursor: grab;
    user-select: none;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 194, 0, 0.5) rgba(255, 255, 255, 0.08);
    scroll-behavior: smooth;
}

.strip-scroll.dragging {
    cursor: grabbing;
    scroll-behavior: auto;
}

.strip-scroll::-webkit-scrollbar {
    height: 8px;
}

.strip-scroll::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.08);
}

.strip-scroll::-webkit-scrollbar-thumb {
    background: rgba(255, 194, 0, 0.6);
    border-radius: 999px;
}

.strip-scroll img {
    flex-shrink: 0;
    width: 380px;
    height: 260px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    transition: opacity var(--transition);
    pointer-events: none;
}

.strip-scroll img:hover {
    opacity: 0.85;
}

/* ============================================
   Projects Section
   ============================================ */

.projects {
    padding: var(--space-3xl) 0;
    background: var(--color-grey-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.project-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.project-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
}

.project-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.project-image picture {
    display: block;
    width: 100%;
    height: 100%;
}

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

.project-card:hover .project-image img {
    transform: scale(1.08);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(37, 35, 73, 0.6) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: var(--space-md);
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-primary);
    color: var(--color-contrast);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
}

.project-info {
    padding: var(--space-md) var(--space-md) var(--space-lg);
}

.project-info h3 {
    margin-bottom: 0.75rem;
    font-size: 1.15rem;
}

.project-info p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-grey);
}

.project-meta span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-light);
    padding: 0.2rem 0.6rem;
    background: var(--color-grey-light);
    border-radius: 100px;
    letter-spacing: 0.02em;
}

/* ============================================
   Process Section
   ============================================ */

.process {
    padding: var(--space-3xl) 0;
    background: var(--color-contrast);
    position: relative;
    overflow: hidden;
}

.process::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border: 1px solid rgba(255, 194, 0, 0.08);
    border-radius: 50%;
}

.process::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 500px;
    height: 500px;
    border: 1px solid rgba(255, 194, 0, 0.05);
    border-radius: 50%;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    position: relative;
    z-index: 1;
}

.process-step {
    text-align: center;
    color: var(--color-white);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.process-step.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.step-illustration {
    width: 140px;
    height: 140px;
    margin: 0 auto var(--space-md);
    color: var(--color-primary);
}

.step-illustration svg {
    width: 100%;
    height: 100%;
}

.step-number {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.process-step h3 {
    color: var(--color-white);
    font-size: 1.3rem;
    margin-bottom: var(--space-sm);
}

.process-step p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 320px;
    margin: 0 auto;
}

/* ============================================
   Why Choose Us
   ============================================ */

.why-us {
    padding: var(--space-3xl) 0;
    background: var(--color-white);
}

.why-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.why-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.why-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.why-card--reverse {
    direction: rtl;
}

.why-card--reverse > * {
    direction: ltr;
}

.why-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 5/4;
    box-shadow: var(--shadow-md);
}

.why-image picture {
    display: block;
    width: 100%;
    height: 100%;
}

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

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

.why-content h3 {
    font-size: clamp(1.4rem, 2.5vw, 1.75rem);
    margin-bottom: var(--space-md);
    color: var(--color-contrast);
}

.why-content p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

/* ============================================
   CTA Banner
   ============================================ */

.cta-banner {
    padding: var(--space-2xl) 0;
    background: var(--color-primary);
    position: relative;
    overflow: hidden;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-banner h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--color-contrast);
    margin-bottom: var(--space-md);
}

.cta-banner h2 em {
    color: var(--color-contrast);
    opacity: 0.7;
}

.cta-banner p {
    font-size: 1.1rem;
    color: var(--color-contrast);
    opacity: 0.8;
    max-width: 560px;
    margin: 0 auto var(--space-lg);
}

.cta-banner .btn-primary {
    background: var(--color-contrast);
    color: var(--color-primary);
    border-color: var(--color-contrast);
}

.cta-banner .btn-primary:hover {
    background: var(--color-contrast-light);
    border-color: var(--color-contrast-light);
    box-shadow: 0 6px 20px rgba(37, 35, 73, 0.35);
}

.cta-sketch {
    position: absolute;
    left: 5%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.15;
    color: var(--color-contrast);
    width: 120px;
    height: 120px;
}

.cta-sketch svg {
    width: 100%;
    height: 100%;
}

/* ============================================
   Contact Section
   ============================================ */

.contact {
    padding: var(--space-3xl) 0;
    background: var(--color-grey-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
    align-items: start;
}

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

.contact-info.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.contact-info h2 {
    margin-bottom: var(--space-md);
}

.contact-info .section-label::after {
    margin: 0.5rem 0 0;
}

.contact-intro {
    font-size: 1.05rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

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

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

.contact-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-contrast);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-item strong {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 0.15rem;
}

.contact-item a {
    color: var(--color-contrast);
    font-weight: 500;
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.contact-form-wrapper.animate-in {
    opacity: 1;
    transform: translateY(0);
}

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

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.4rem;
    letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-grey-light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-grey-dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    background: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 194, 0, 0.15);
}

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

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M1 4l5 5 5-5' fill='none' stroke='%236B6B80' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group--error input,
.form-group--error textarea,
.form-group--error select {
    border-color: #e53935;
    animation: shake 0.4s ease-in-out;
}

.error {
    display: block;
    color: #e53935;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    animation: slideDown 0.3s ease-out;
}

.form-note {
    margin-top: var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-grey-dark);
    text-align: center;
}

/* Form button loading and success states */
.btn[disabled] {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-success {
    background: #4CAF50 !important;
    border-color: #4CAF50 !important;
    color: white !important;
    animation: successPulse 0.6s ease-out;
}

.btn-success::before {
    content: '✓';
    margin-right: 0.5rem;
    font-size: 1.2em;
    animation: checkPop 0.4s ease-out;
}

/* Animations */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

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

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes checkPop {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    background: var(--color-contrast);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand img {
    height: 30px;
    width: auto;
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 280px;
}

.site-footer h4 {
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.site-footer ul {
    list-style: none;
}

.site-footer li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

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

.footer-contact address p {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-kvk {
    font-size: 0.8rem;
    opacity: 0.6;
    margin-top: var(--space-sm);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.6;
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes drawLine {
    from {
        stroke-dashoffset: 1000;
    }
    to {
        stroke-dashoffset: 0;
    }
}

/* ============================================
   Responsive Design
   ============================================ */

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

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

    .process-steps {
        gap: var(--space-lg);
    }

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

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    /* Mobile nav */
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-contrast);
        flex-direction: column;
        align-items: stretch;
        padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
        gap: 0;
        transform: translateX(100%);
        transition: transform var(--transition);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu a {
        padding: 0.75rem 0;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-menu a::after {
        display: none;
    }

    .nav-cta {
        margin-left: 0 !important;
        margin-top: var(--space-md);
        text-align: center;
        padding: 0.75rem !important;
    }

    /* Hero */
    .hero-content {
        padding-left: clamp(1.25rem, 4vw, 3rem);
    }

    .hero-sketch {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

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

    .service-card {
        text-align: left;
        display: grid;
        grid-template-columns: 64px 1fr;
        grid-template-rows: auto auto;
        gap: 0 var(--space-md);
        padding: var(--space-md);
    }

    .service-icon {
        grid-row: 1 / 3;
        margin: 0;
        width: 48px;
        height: 48px;
    }

    .service-card h3 {
        align-self: end;
        margin-bottom: 0.25rem;
    }

    .service-card p {
        font-size: 0.9rem;
    }

    /* Image strip */
    .strip-scroll img {
        width: 280px;
        height: 190px;
    }
    .strip-scroll picture {
        flex-shrink: 0;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    /* Process */
    .process-steps {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .step-illustration {
        width: 100px;
        height: 100px;
    }

    /* Why us */
    .why-card,
    .why-card--reverse {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        direction: ltr;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

    /* CTA */
    .cta-sketch {
        display: none;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .services {
        padding: var(--space-xl) 0;
    }

    .projects {
        padding: var(--space-xl) 0;
    }

    .process {
        padding: var(--space-xl) 0;
    }

    .why-us {
        padding: var(--space-xl) 0;
    }

    .contact {
        padding: var(--space-xl) 0;
    }

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

/* ============================================
   Print styles
   ============================================ */
@media print {
    .site-header,
    .nav-toggle,
    .hero-sketch,
    .cta-sketch,
    .image-strip,
    .cta-banner {
        display: none !important;
    }

    body {
        color: #000;
        background: #fff;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
    }

    .hero-bg {
        display: none;
    }

    .hero-content {
        padding: 0;
    }

    .hero h1 {
        color: #000;
    }
}

/* ============================================
   Reduced motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .service-card,
    .project-card,
    .process-step,
    .why-card,
    .section-header,
    .contact-info,
    .contact-form-wrapper {
        opacity: 1 !important;
        transform: none !important;
    }
}