/* ==========================================================================
   SIDE PERSPECTIVE - Main Production Stylesheet
   Theme: Professional Polish
   Author: Wilfrid Guillaume
   ========================================================================== */

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Elegant Color Palette - Professional Polish */
    --bg-primary: #ffffff;
    --bg-secondary: #fbfbfc;
    --bg-tertiary: #f4f5f7;
    
    --text-primary: #1a1a1a;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --accent: #002b5b;
    --accent-light: #06376e;
    --accent-tint: #f4f6f9;
    
    --border-color: #e5e7eb;
    --border-focus: #002b5b;
    
    --error: #b91c1c;
    --error-light: #fef2f2;
    --success: #15803d;
    --success-light: #f0fdf4;
    
    --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-quick: 0.15s ease-out;
}

/* Base Reset & Core Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Accessibility Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    background-color: var(--accent);
    color: white;
    padding: 12px 24px;
    z-index: 9999;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 4px;
    transition: top var(--transition-quick);
}

.skip-link:focus {
    top: 16px;
}

/* Focus Rings */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 4px;
}

/* Container limits */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 40px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 64px;
    }
}

/* Header Styles */
.site-header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-b: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: border-color var(--transition-smooth);
}

.header-container {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: -0.025em;
    user-select: none;
}

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

/* Navigation Links */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 600;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    text-decoration: none;
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-quick);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-smooth);
}

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

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-link.active {
    color: var(--accent);
}

.nav-link.active::after {
    transform: scaleX(1);
}

/* Mobile Navigation Toggle */
.menu-toggle-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 4px;
}

.menu-toggle-btn:hover {
    background-color: var(--bg-tertiary);
}

/* Main content wrapper */
main {
    flex: 1 0 auto;
}

/* Footer Styles */
.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 40px;
    color: var(--text-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1.5fr;
        gap: 64px;
    }
}

.brand-col .footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--accent);
    display: block;
    margin-bottom: 20px;
}

.brand-col .footer-tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 320px;
    line-height: 1.6;
}

.col-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-primary);
    margin-bottom: 24px;
    display: block;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-nav a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-quick);
}

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

.footer-address {
    font-style: normal;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-address p {
    margin-bottom: 8px;
}

.footer-address a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
}

.footer-address a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 32px;
}

.footer-meta {
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (min-width: 768px) {
    .footer-meta {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.legal-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.legal-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-quick);
}

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

.footer-registration {
    margin-top: 20px;
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Home / Index Page Layout - Strategic Hero & Interactive Columns */
.hero-section {
    padding: 100px 0 80px;
    background-color: var(--bg-primary);
}

@media (min-width: 1024px) {
    .hero-section {
        padding: 140px 0 100px;
    }
}

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

.hero-title {
    font-size: clamp(2.5rem, 6.5vw, 5rem);
    line-height: 0.95;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--accent);
    margin-bottom: 32px;
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    line-height: 1.65;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 700px;
}

.cta-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 0;
    cursor: pointer;
    transition: background-color var(--transition-quick), color var(--transition-quick), transform var(--transition-quick), border-color var(--transition-quick);
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    border: 1px solid var(--accent);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

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

/* Columns Section - Dynamic Bento Alignment */
.pillars-section {
    padding: 80px 0 120px;
    background-color: var(--bg-primary);
}

.pillars-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .pillars-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }
}

/* Polish Theme Cards with left borders and shifts */
.polish-card {
    background-color: transparent;
    border: none;
    border-left: 2px solid var(--border-color);
    padding: 8px 0 8px 24px;
    border-radius: 0;
    transition: border-color var(--transition-smooth), transform var(--transition-smooth);
}

.polish-card:hover {
    border-left-color: var(--accent);
    transform: translateX(6px);
}

.card-num {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 16px;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.card-text {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Quote Section */
.quote-section {
    background-color: var(--bg-tertiary);
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.quote-container {
    max-width: 800px;
}

.quote-text {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    line-height: 1.4;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 32px;
    letter-spacing: -0.03em;
}

.quote-author {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
}

/* About & Services Header Structures */
.page-header {
    padding: 100px 0 60px;
    border-bottom: 1px solid var(--border-color);
}

.page-subtitle {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 16px;
    display: block;
}

.page-title {
    font-size: clamp(2.5rem, 5.5vw, 3.75rem);
    line-height: 1.05;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--accent);
    margin-bottom: 24px;
}

.page-intro {
    font-size: clamp(1.1rem, 2.2vw, 1.25rem);
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 800px;
}

/* Two Column Content Grids */
.content-section {
    padding: 80px 0 120px;
}

.two-col-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 64px;
}

@media (min-width: 1024px) {
    .two-col-grid {
        grid-template-columns: 2fr 1fr;
        gap: 80px;
    }
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.content-block h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.content-block p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* Lists and metrics inside Content Blocks */
.metrics-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 32px 0;
}

.metric-item {
    border-left: 2px solid var(--accent);
    padding-left: 16px;
}

.metric-num {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 4px;
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Sidebars matching Polish design constraints */
.sidebar {
    background-color: var(--bg-secondary);
    border: none;
    border-left: 2px solid var(--accent);
    padding: 32px;
    border-radius: 0;
}

@media (min-width: 1024px) {
    .sidebar {
        position: sticky;
        top: 120px;
    }
}

.sidebar h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.sidebar p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Services Grids & Illustrations */
.services-list {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.service-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

@media (min-width: 768px) {
    .service-row {
        grid-template-columns: 1.2fr 1fr;
        gap: 64px;
    }
    
    .service-row.reverse {
        grid-template-columns: 1fr 1.2fr;
    }
}

.service-illustration {
    background-color: var(--bg-secondary);
    border: none;
    border-left: 2px solid var(--accent);
    padding: 32px 40px;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 300px;
}

.ill-text {
    font-size: clamp(1.2rem, 3.5vw, 2rem);
    line-height: 1.15;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

.ill-sub {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.service-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

.service-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* Contact Page Grid & Form */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 64px;
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1.5fr 1fr;
        gap: 80px;
    }
}

/* Polish visual style for form cards and alerts */
.polish-form-card {
    background-color: var(--bg-primary);
    border: none;
    border-left: 2px solid var(--accent);
    padding: 40px;
    border-radius: 0;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0;
    transition: border-color var(--transition-quick), background-color var(--transition-quick);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    background-color: var(--bg-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

/* Anti-spam visually hidden honeypot wrapper */
.hp-wrapper {
    position: absolute !important;
    width: 0 !important;
    height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    border: 0 !important;
    pointer-events: none !important;
    opacity: 0 !important;
}

/* Alert styles */
.alert {
    padding: 20px;
    margin-bottom: 32px;
    border-radius: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.alert-success {
    background-color: var(--success-light);
    border-left: 4px solid var(--success);
    color: var(--success);
}

.alert-error {
    background-color: var(--error-light);
    border-left: 4px solid var(--error);
    color: var(--error);
}

/* Legal & Privacy details */
.legal-container {
    max-width: 800px;
}

.legal-section {
    margin-bottom: 48px;
}

.legal-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.legal-section p,
.legal-section li {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 16px;
}

.legal-section ul {
    padding-left: 24px;
    margin-bottom: 20px;
}

/* Mobile Responsive Navigation Overlay Styles */
@media (max-width: 767px) {
    .menu-toggle-btn {
        display: block;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-primary);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 40px 24px;
        gap: 32px;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition-smooth), opacity var(--transition-smooth);
        z-index: 999;
        overflow-y: auto;
    }
    
    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .nav-link {
        font-size: 1.25rem;
        width: 100%;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 0;
    }
    
    .nav-link::after {
        display: none;
    }
}