/* ============================================
   QFACTUUR - STYLESHEET
   Black & White Professional Design
   Mobile-First Responsive
   ============================================ */

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */

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

:root {
    /* Color Palette - Black & White Only */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-dark: #1a1a1a;
    --color-gray-medium: #4a4a4a;
    --color-gray-light: #e5e5e5;
    --color-gray-lighter: #f5f5f5;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    
    /* Spacing Scale */
    --spacing-xs: 0.5rem;    /* 8px */
    --spacing-sm: 1rem;      /* 16px */
    --spacing-md: 1.5rem;    /* 24px */
    --spacing-lg: 2rem;      /* 32px */
    --spacing-xl: 3rem;      /* 48px */
    --spacing-xxl: 4rem;     /* 64px */
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Max Width */
    --max-width: 1200px;
    --max-width-narrow: 800px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Account for sticky header */
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.7;
    letter-spacing: 0.01em;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    letter-spacing: -0.01em;
}

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    opacity: 0.7;
}

a:focus {
    outline: 2px solid var(--color-black);
    outline-offset: 2px;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.75rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .step-card,
    .benefit-item {
        padding: var(--spacing-md);
    }
}

/* ============================================
   HEADER
   ============================================ */

.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: box-shadow var(--transition-normal);
}

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

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

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.5px;
    color: var(--color-black);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo:hover {
    opacity: 1;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.lang-link {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-gray-light);
    background-color: var(--color-white);
    color: var(--color-black);
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}

.lang-link.active {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.lang-link.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.lang-link:not(.disabled):not(.active):hover {
    background-color: var(--color-gray-lighter);
    border-color: var(--color-gray-medium);
}

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

.hero {
    padding: calc(var(--spacing-xxl) * 1.2) 0 var(--spacing-xxl) 0;
    background-color: var(--color-white);
    position: relative;
    overflow: hidden;
}

/* Geometric Background Pattern */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-gray-light) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.3;
    z-index: 0;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(-20px, 20px) rotate(5deg);
    }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
    max-width: 900px;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    max-width: 65ch;
    color: var(--color-gray-medium);
}

.definition-box {
    background-color: var(--color-gray-lighter);
    border-left: 4px solid var(--color-black);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.definition-box p {
    margin: 0;
    font-style: italic;
    color: var(--color-gray-dark);
    font-size: 1.0625rem;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-black);
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    text-decoration: none;
    margin-bottom: var(--spacing-xxl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.cta-button:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.cta-button:focus {
    outline: 2px solid var(--color-black);
    outline-offset: 4px;
}

/* Mobile Sticky CTA Button */
.cta-button-mobile {
    display: none;
    position: fixed;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 1500;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-black);
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    text-align: center;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-normal);
    animation: slideUpIn 0.4s ease-out;
}

@keyframes slideUpIn {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.cta-button-mobile:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

@media (max-width: 768px) {
    .cta-button-mobile {
        display: block;
    }
    
    .cta-button {
        margin-bottom: calc(var(--spacing-xxl) + 60px); /* Space for sticky button */
    }
}

/* Hero Images */
.hero-images {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.hero-image-wrapper {
    max-width: 600px;
    width: 100%;
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    object-fit: cover;
}

.hero-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.placeholder-image {
    width: 100%;
    aspect-ratio: 16/9;
    background-color: var(--color-gray-light);
    border: 1px solid var(--color-gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.placeholder-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.placeholder-text {
    color: var(--color-gray-medium);
    font-size: 0.875rem;
    text-align: center;
    padding: var(--spacing-md);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

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

.section {
    padding: calc(var(--spacing-xxl) * 1.2) 0;
    background-color: var(--color-white);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-alt {
    background-color: var(--color-gray-lighter);
}

/* Dark Section (High Contrast) */
.section-dark {
    background-color: var(--color-black);
    color: var(--color-white);
}

.section-dark h2,
.section-dark h3,
.section-dark .section-title {
    color: var(--color-white);
}

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

.section-dark .bullet-list li::before {
    color: var(--color-white);
}

.section-dark .bullet-list li {
    color: var(--color-white);
}

.section-dark .step-card,
.section-dark .benefit-item {
    background-color: var(--color-gray-dark);
    border-color: var(--color-gray-medium);
    color: var(--color-white);
}

.section-dark .step-card:hover,
.section-dark .benefit-item:hover {
    background-color: var(--color-gray-medium);
    border-color: var(--color-white);
}

.section-dark .step-title,
.section-dark .benefit-title {
    color: var(--color-white);
}

.section-dark .step-description,
.section-dark .benefit-text {
    color: var(--color-gray-light);
}

/* Diagonal Section Divider */
.section-diagonal {
    position: relative;
    overflow: hidden;
}

.section-diagonal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom right, var(--color-white) 49%, var(--color-gray-lighter) 51%);
    clip-path: polygon(0 0, 100% 0, 100% 80%, 0 100%);
    z-index: 0;
}

.section-diagonal .container {
    position: relative;
    z-index: 1;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: var(--color-black);
}

@media (max-width: 767px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .section-dark {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
}

/* ============================================
   BULLET LISTS
   ============================================ */

.bullet-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.bullet-list li {
    position: relative;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
    line-height: 1.8;
    max-width: 65ch;
}

@media (max-width: 767px) {
    .bullet-list li {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
    }
}

.bullet-list li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--color-black);
    font-weight: var(--font-weight-bold);
    font-size: 1.25rem;
    letter-spacing: 0;
}

/* ============================================
   STEPS (How It Works)
   ============================================ */

.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.step-card {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.step-card:nth-child(1) {
    animation-delay: 0.1s;
}

.step-card:nth-child(2) {
    animation-delay: 0.2s;
}

.step-card:nth-child(3) {
    animation-delay: 0.3s;
}

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

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
    border-color: var(--color-gray-medium);
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-black);
    background-color: var(--color-gray-lighter);
    border-radius: 50%;
    padding: var(--spacing-sm);
    transition: all var(--transition-normal);
    animation: pulse 2s ease-in-out infinite;
}

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

.step-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-black);
}

.step-card:hover .step-icon {
    background-color: var(--color-black);
    color: var(--color-white);
    transform: scale(1.1);
    animation: none;
}

.step-card:hover .step-icon svg {
    stroke: var(--color-white);
}

.step-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.step-description {
    color: var(--color-gray-medium);
    line-height: 1.6;
}

/* ============================================
   BENEFITS (Value Propositions)
   ============================================ */

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.benefit-item {
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.benefit-item:nth-child(1) { animation-delay: 0.1s; }
.benefit-item:nth-child(2) { animation-delay: 0.15s; }
.benefit-item:nth-child(3) { animation-delay: 0.2s; }
.benefit-item:nth-child(4) { animation-delay: 0.25s; }
.benefit-item:nth-child(5) { animation-delay: 0.3s; }

.benefit-item:hover {
    border-color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.benefit-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.benefit-text {
    color: var(--color-gray-medium);
    line-height: 1.6;
}

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

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

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

.contact-section .section-title::after {
    background-color: var(--color-white);
}

.contact-section .contact-reassurance,
.contact-section .gdpr-notice {
    color: var(--color-gray-light);
}

.contact-section .contact-reassurance a,
.contact-section .gdpr-notice {
    color: var(--color-gray-light);
    border-top-color: var(--color-gray-medium);
}

.contact-section .gdpr-notice a {
    color: var(--color-white);
    text-decoration: underline;
}

.contact-section .checkbox-label a {
    color: var(--color-white);
    text-decoration: underline;
}

.contact-section .checkbox-label a:hover {
    color: var(--color-gray-light);
}

.contact-section .contact-form {
    background-color: var(--color-gray-dark);
    border-color: var(--color-gray-medium);
}

.contact-section .form-group label,
.contact-section .form-group legend {
    color: var(--color-white);
}

.contact-section input[type="text"],
.contact-section input[type="email"],
.contact-section input[type="tel"],
.contact-section select,
.contact-section textarea {
    background-color: var(--color-white);
    border-color: var(--color-gray-medium);
    color: var(--color-black);
}

.contact-section .submit-button {
    background-color: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
}

.contact-section .submit-button:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-white);
}

.contact-section .form-progress {
    background-color: var(--color-gray-medium);
}

.contact-section .form-progress-text {
    color: var(--color-white);
}

.contact-section .form-progress-bar {
    background-color: var(--color-white);
}

.contact-reassurance {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-gray-medium);
    margin-bottom: var(--spacing-md);
}

.gdpr-notice {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--color-gray-medium);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-light);
}

.gdpr-notice a {
    text-decoration: underline;
}

/* Form Progress Indicator */
.form-progress {
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-gray-lighter);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.form-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--color-black);
    width: 0%;
    transition: width 0.3s ease-out;
    z-index: 0;
}

.form-progress-text {
    position: relative;
    z-index: 1;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-black);
    display: block;
    text-align: center;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    position: relative;
}

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

.form-group label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.form-group fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

.form-group legend {
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.required {
    color: var(--color-black);
    font-weight: var(--font-weight-bold);
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    color: var(--color-black);
    transition: all var(--transition-fast);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="tel"]:hover,
select:hover,
textarea:hover {
    border-color: var(--color-gray-medium);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-black);
    border-width: 2px;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
    transition: all var(--transition-fast);
}

input[type="text"]:invalid:not(:focus):not(:placeholder-shown),
input[type="email"]:invalid:not(:focus):not(:placeholder-shown) {
    border-color: var(--color-gray-medium);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* Honeypot Field (Hidden) */
.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

/* Checkbox and Radio Groups */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-label,
.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-normal);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"],
.radio-label input[type="radio"] {
    width: auto;
    margin: 0;
    cursor: pointer;
}

.error-message {
    display: block;
    color: var(--color-gray-medium);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    min-height: 1.25rem;
}

.error-message:not(:empty) {
    color: var(--color-black);
}

.submit-button {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-black);
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-top: var(--spacing-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    min-height: 44px; /* Better touch target */
}

.submit-button:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.submit-button:focus {
    outline: 2px solid var(--color-black);
    outline-offset: 4px;
}

.submit-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Form Messages */
.message {
    max-width: 700px;
    margin: var(--spacing-lg) auto 0;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.message.hidden {
    display: none;
}

.message:not(.hidden) {
    display: block;
}

.success-message {
    background-color: var(--color-gray-lighter);
    border: 2px solid var(--color-black);
    color: var(--color-black);
    border-radius: var(--radius-md);
}

.contact-section .success-message {
    background-color: var(--color-gray-dark);
    border-color: var(--color-white);
    color: var(--color-white);
}

.contact-section .error-message {
    background-color: var(--color-gray-dark);
    border-color: var(--color-gray-medium);
    color: var(--color-white);
}

.error-message {
    background-color: var(--color-gray-lighter);
    border: 2px solid var(--color-gray-medium);
    color: var(--color-black);
    border-radius: var(--radius-md);
}

.error-message a {
    text-decoration: underline;
}

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

.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: calc(var(--spacing-xxl) * 1.5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

@media (min-width: 768px) {
    .footer-section:first-child {
        text-align: left;
    }
    
    .footer-section:last-child {
        text-align: right;
    }
}

.footer-brand {
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
}

.footer-section a {
    color: var(--color-white);
    text-decoration: underline;
}

.footer-section a:hover {
    opacity: 0.8;
}

.footer-separator {
    margin: 0 var(--spacing-xs);
    opacity: 0.5;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ============================================
   COOKIE BANNER
   ============================================ */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-top: 2px solid var(--color-black);
    padding: var(--spacing-md);
    z-index: 2000;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
    display: none;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.cookie-banner.show {
    display: block;
}

.cookie-banner-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

@media (min-width: 768px) {
    .cookie-banner-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

.cookie-text {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-gray-dark);
    text-align: center;
}

@media (min-width: 768px) {
    .cookie-text {
        text-align: left;
        flex: 1;
    }
}

.cookie-text a {
    text-decoration: underline;
}

.cookie-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-black);
    color: var(--color-white);
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.cookie-button:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.cookie-button:focus {
    outline: 2px solid var(--color-black);
    outline-offset: 4px;
}

/* ============================================
   LEGAL PAGES
   ============================================ */

.legal-page {
    padding: var(--spacing-xxl) 0;
    min-height: 60vh;
}

.legal-page h1 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.legal-content {
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.8;
}

.legal-section {
    margin-bottom: var(--spacing-xxl);
}

.legal-section:last-child {
    margin-bottom: 0;
}

.legal-content h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
    border-bottom: 2px solid var(--color-gray-light);
    padding-bottom: var(--spacing-xs);
}

.legal-content h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.legal-content h4 {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray-dark);
    font-weight: var(--font-weight-medium);
}

.legal-content p {
    margin-bottom: var(--spacing-md);
    max-width: 75ch;
}

.legal-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    max-width: 75ch;
}

.legal-content li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.legal-content strong {
    font-weight: var(--font-weight-bold);
    color: var(--color-black);
}

.legal-content a {
    text-decoration: underline;
    color: var(--color-black);
}

.legal-content a:hover {
    opacity: 0.7;
}

.language-divider {
    border: none;
    border-top: 2px solid var(--color-gray-light);
    margin: var(--spacing-xxl) 0;
    max-width: 200px;
}

.last-updated {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--color-gray-medium);
    font-style: italic;
    text-align: center;
}

@media (max-width: 767px) {
    .legal-content {
        max-width: 100%;
    }
    
    .legal-content h2 {
        font-size: 1.5rem;
    }
    
    .legal-content h3 {
        font-size: 1.25rem;
    }
    
    .legal-content ul {
        padding-left: var(--spacing-md);
    }
}

.back-to-home {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.back-button {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-black);
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    text-decoration: none;
}

.back-button:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    opacity: 1;
}

.back-button:focus {
    outline: 2px solid var(--color-black);
    outline-offset: 4px;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Skip to main content link (for screen readers) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-black);
    color: var(--color-white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--color-black);
    outline-offset: 2px;
}

/* Deadline Banner */
.deadline-banner {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.deadline-banner strong {
    font-weight: 600;
}

/* Cookie Reject Button */
.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.cookie-button-secondary {
    background: transparent;
    border: 1px solid var(--color-white);
}

.cookie-button-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Footer Address */
.footer-address {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

/* Mobile-specific adjustments */
@media (max-width: 480px) {
    .deadline-banner {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .cookie-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cookie-button-secondary {
        width: 100%;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .header,
    .footer,
    .cookie-banner,
    .cta-button,
    .contact-form,
    .back-button {
        display: none;
    }
    
    body {
        color: var(--color-black);
        background: var(--color-white);
    }
    
    a {
        text-decoration: underline;
    }
    
    .section {
        page-break-inside: avoid;
    }
}

/* ============================================
   PERFORMANCE NOTES
   ============================================
   
   To optimize further:
   1. Minify CSS using tools like cssnano or clean-css
   2. Consider critical CSS inlining for above-the-fold content
   3. Use system fonts (already implemented) to avoid external font loading
   4. Ensure images are optimized and use loading="lazy" for below-fold images
   5. Consider CSS custom properties for better browser caching
   
   Performance targets:
   - First Contentful Paint < 1.5s
   - Largest Contentful Paint < 2.5s
   - Time to Interactive < 3.5s
   
   ============================================ */