/* ==========================
   PP2P TECHNOLOGIES - MAIN STYLESHEET
   Design: Institutionnel, sobre, premium
   ========================== */

/* === VARIABLES === */
:root {
    /* Colors */
    --color-primary: #0A4D8C;
    --color-primary-light: #1E88E5;
    --color-primary-dark: #062D52;
    --color-secondary: #2C3E50;
    --color-accent: #0A4D8C;
    
    --color-text-primary: #1A1A1A;
    --color-text-secondary: #4A5568;
    --color-text-light: #718096;
    
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F7FAFC;
    --color-bg-alt: #EDF2F7;
    
    --color-border: #E2E8F0;
    --color-border-light: #EDF2F7;
    
    /* Typography */
    --font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
    
    /* Effects */
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    font-weight: var(--font-weight-regular);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.3;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.lead {
    font-size: 1.25rem;
    font-weight: var(--font-weight-regular);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.large-text {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
}

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

a:hover {
    color: var(--color-primary-light);
}

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

/* === HEADER === */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    font-weight: var(--font-weight-semibold);
    font-size: 1.25rem;
    color: var(--color-primary);
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.8;
}

.logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.logo-icon {
    display: flex;
    align-items: center;
    color: var(--color-primary);
}

.logo-text {
    letter-spacing: 0.5px;
}

/* Navigation */
.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

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

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

.nav-link-cta {
    background-color: var(--color-primary);
    color: white !important;
    padding: 0.625rem 1.25rem;
    border-radius: 6px;
}

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

.nav-link-cta:hover {
    background-color: var(--color-primary-light);
}

/* Language Selector */
.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid var(--color-border);
}

.lang-link {
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    padding: 0.25rem 0.5rem;
    transition: var(--transition);
}

.lang-link:hover {
    color: var(--color-primary);
}

.lang-link.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.lang-separator {
    color: var(--color-border);
    font-size: 0.875rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

/* === HERO SECTION === */
.hero {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    text-align: center;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-light);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: #34495e;
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-primary-large {
    padding: 1rem 2.5rem;
    font-size: 1.0625rem;
    background-color: var(--color-primary);
    color: white;
}

.btn-primary-large:hover {
    background-color: var(--color-primary-light);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-large {
    padding: 1rem 2.5rem;
    font-size: 1.0625rem;
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

/* === FEATURES SECTION === */
.features {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border-light);
}

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

.feature-icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.feature-card p {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* === VISION SECTION === */
.vision {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.vision-content {
    max-width: 800px;
    margin: 0 auto;
}

.vision h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

/* === CTA SECTION === */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    color: white;
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary-large {
    background-color: white;
    color: var(--color-primary);
}

.cta-section .btn-primary-large:hover {
    background-color: var(--color-bg-secondary);
}

.cta-section .btn-outline-large {
    border-color: white;
    color: white;
}

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

/* === PAGE HEADER === */
.page-header {
    padding: var(--spacing-2xl) 0 var(--spacing-xl) 0;
    text-align: center;
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-light);
}

.page-header h1 {
    font-size: 2.75rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.page-header .subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* === CONTENT SECTIONS === */
.content-section {
    padding: var(--spacing-3xl) 0;
}

.content-section.alt-bg {
    background-color: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: 2.25rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.section-intro {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    color: var(--color-text-secondary);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.content-card {
    padding: var(--spacing-lg);
}

.content-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

/* === SOLUTION GRID === */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.solution-item {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.solution-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.solution-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background-color: var(--color-bg-alt);
    padding: 0.375rem 0.875rem;
    border-radius: 20px;
    margin-bottom: var(--spacing-md);
}

.solution-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

/* === PRINCIPLES LIST === */
.principles-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.principle-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.principle-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.principle-icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.principle-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.principle-content p {
    margin-bottom: 0;
}

/* === TECHNICAL APPROACH === */
.technical-approach {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-secondary);
}

.approach-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.approach-content h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

/* === COMPANY OVERVIEW === */
.company-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.overview-item {
    padding: var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.overview-item.full-width {
    grid-column: 1 / -1;
}

.overview-item h3 {
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}

/* === MISSION CONTENT === */
.mission-content {
    max-width: 800px;
    margin: 0 auto;
}

/* === APPROACH GRID === */
.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.approach-card {
    padding: var(--spacing-xl);
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.approach-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.approach-card h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* === VALUES SECTION === */
.values-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-secondary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.value-item {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.value-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background-color: var(--color-bg-alt);
    padding: 0.375rem 0.875rem;
    border-radius: 20px;
    margin-bottom: var(--spacing-md);
}

.value-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

/* === POSITIONING === */
.positioning-content {
    max-width: 800px;
    margin: 0 auto;
}

.positioning-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.positioning-point {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.positioning-point svg {
    flex-shrink: 0;
    color: var(--color-primary);
    margin-top: 0.25rem;
}

.positioning-point p {
    margin-bottom: 0;
    color: var(--color-text-secondary);
}

/* === LEGAL DISCLAIMER === */
.legal-disclaimer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-alt);
    border-left: 3px solid var(--color-primary);
    border-radius: 4px;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    font-style: italic;
}

.tech-clarification {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg-alt);
    border-left: 3px solid var(--color-primary);
    border-radius: 4px;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

/* === LEGAL PAGE === */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.legal-section:last-child {
    border-bottom: none;
}

.legal-section h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.legal-info p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

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

.legal-info strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.legal-info em {
    color: var(--color-text-light);
}

.legal-info a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.legal-info a:hover {
    border-bottom-color: var(--color-primary);
}

/* === IP SECTIONS === */
.ip-intro {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.strategy-card {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    text-align: center;
    transition: var(--transition);
}

.strategy-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.strategy-icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.strategy-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.protection-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.protection-item {
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-radius: 12px;
    border-left: 4px solid var(--color-primary);
}

.protection-item h3 {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.protection-item p {
    margin-bottom: 0;
}

/* === IP APPROACH === */
.ip-approach {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-secondary);
}

.approach-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: var(--spacing-2xl) auto 0;
}

.step-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background-color: white;
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: white;
    font-weight: var(--font-weight-semibold);
    font-size: 1.125rem;
    border-radius: 50%;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    margin-bottom: 0;
}

/* === CONFIDENTIALITY NOTE === */
.confidentiality-note {
    padding: var(--spacing-3xl) 0;
}

.note-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background-color: var(--color-bg-alt);
    border-radius: 12px;
    border-left: 4px solid var(--color-primary);
    display: flex;
    gap: var(--spacing-lg);
}

.note-icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.note-text h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.note-text p:last-child {
    margin-bottom: 0;
}

/* === CONTACT SECTION === */
.contact-section {
    padding: var(--spacing-3xl) 0;
}

.contact-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
    text-align: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    max-width: 1100px;
    margin: 0 auto;
}

.contact-info h2,
.contact-form-container h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xl);
    color: var(--color-primary);
}

.info-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.info-icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.info-content h3 {
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.info-content p {
    margin-bottom: 0;
    color: var(--color-text-primary);
}

.info-content a {
    color: var(--color-primary);
    text-decoration: none;
}

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

.contact-note {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-alt);
    border-radius: 8px;
}

.contact-note h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.contact-note p {
    font-size: 0.9375rem;
}

/* === CONTACT FORM === */
.form-wrapper {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

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

.form-group label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
    background-color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(10, 77, 140, 0.1);
}

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

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-regular);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
    cursor: pointer;
}

.form-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-md);
    margin-bottom: 0;
}

.form-message {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: var(--spacing-lg);
    font-size: 0.9375rem;
}

.form-message.success {
    background-color: #D4EDDA;
    color: #155724;
    border: 1px solid #C3E6CB;
}

.form-message.error {
    background-color: #F8D7DA;
    color: #721C24;
    border: 1px solid #F5C6CB;
}

.form-message.warning {
    background-color: #FFF3CD;
    color: #856404;
    border: 1px solid #FFEAA7;
}

/* === FOOTER === */
.footer {
    background-color: var(--color-secondary);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.875rem;
    color: white;
}

.footer-brand .logo-icon {
    color: white;
}

.logo-img-footer {
    width: 40px;
    height: 40px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-brand-text {
    font-weight: var(--font-weight-semibold);
    font-size: 1.25rem;
    letter-spacing: 0.5px;
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-legal {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* === RESPONSIVE === */
@media (max-width: 968px) {
    :root {
        --header-height: 70px;
    }
    
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.875rem; }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .logo-img {
        width: 42px;
        height: 42px;
    }
    
    .logo {
        font-size: 1.125rem;
    }
    
    .nav {
        position: fixed;
        top: var(--header-height);
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - var(--header-height));
        background: white;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        gap: 1rem;
        box-shadow: var(--shadow-lg);
        transition: right 0.3s ease;
    }
    
    .nav.active {
        right: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .principle-item,
    .step-item {
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    
    .logo-img {
        width: 36px;
        height: 36px;
    }
    
    .logo {
        font-size: 1rem;
        gap: 0.625rem;
    }
    
    .logo-text {
        display: none;
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-subtitle {
        font-size: 1.0625rem;
    }
    
    .hero-cta,
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn,
    .btn-primary-large,
    .btn-outline-large {
        width: 100%;
    }
    
    .features-grid,
    .content-grid,
    .solution-grid,
    .approach-grid,
    .values-grid,
    .strategy-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .content-section,
    .technical-approach,
    .values-section,
    .ip-approach,
    .contact-section {
        padding: var(--spacing-2xl) 0;
    }
}