/* ============================================
   AI LABS SOLUTIONS - STYLES.CSS
   Modern, responsive landing page styles
   ============================================ */

/* ============================================
   CSS VARIABLES / THEME
   ============================================ */
:root {
    /* Colors - Light Mode */
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-secondary: #334155;
    --color-accent: #06b6d4;
    --color-accent-light: #22d3ee;
    --color-accent-purple: #8b5cf6;
    --color-accent-gradient: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);

    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-surface: #ffffff;
    --color-surface-elevated: #f1f5f9;

    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-text-inverse: #ffffff;

    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    /* Success/Error */
    --color-success: #10b981;
    --color-error: #ef4444;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 40px rgb(6 182 212 / 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Z-index */
    --z-navbar: 100;
    --z-modal: 200;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-alt: #1e293b;
    --color-bg-dark: #020617;
    --color-surface: #1e293b;
    --color-surface-elevated: #334155;

    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    --color-border: #334155;
    --color-border-light: #1e293b;

    --shadow-glow: 0 0 60px rgb(6 182 212 / 0.2);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ============================================
   UTILITIES
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.section {
    padding: var(--spacing-4xl) 0;
}

.gradient-text {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-navbar);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.85);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

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

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

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-gradient);
    transition: width var(--transition-base);
}

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

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

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

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    margin-left: var(--spacing-md);
}

.theme-toggle:hover {
    background: var(--color-surface-elevated);
    color: var(--color-text);
}

.icon-moon { display: none; }
.icon-sun { display: block; }

[data-theme="dark"] .icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: none; }

/* Accessibility Toggles Container */
.accessibility-toggles {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.accessibility-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
}

.accessibility-toggle:hover {
    background: var(--color-surface-elevated);
    color: var(--color-text);
}

.accessibility-toggle svg {
    pointer-events: none;
}

.icon-eye-off { display: none; }
.icon-eye { display: block; }

[data-colorblind="true"] .icon-eye-off { display: block; }
[data-colorblind="true"] .icon-eye { display: none; }

[data-colorblind="true"] .accessibility-toggle {
    color: var(--color-primary);
}

/* Colorblind Mode Colors - Optimized for deuteranopia/protanopia */
[data-colorblind="true"] {
    --color-primary: #0077bb;
    --color-primary-dark: #005588;
    --color-secondary: #ee7733;
    --color-accent: #009988;
    --color-accent-gradient: linear-gradient(135deg, #0077bb 0%, #009988 100%);
    --color-success: #009988;
    --color-error: #cc3311;
    --color-warning: #ee7733;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

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

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

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

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(6, 182, 212, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.1), transparent);
}

[data-theme="dark"] .hero-gradient {
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(6, 182, 212, 0.25), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.15), transparent);
}

.hero-particles {
    position: absolute;
    inset: 0;
    opacity: 0.5;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Image Placeholders */
.hero-image-placeholder,
.portfolio-image-placeholder {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 4/3;
    background: var(--color-surface-elevated);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    color: var(--color-text-muted);
    border: 2px dashed var(--color-border);
    position: relative;
    overflow: hidden;
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.placeholder-content span {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.placeholder-content small {
    font-size: var(--font-size-xs);
}

/* Portfolio Browser Mockup */
.portfolio-image-placeholder {
    padding-top: 40px;
}

.browser-dots {
    position: absolute;
    top: 12px;
    left: 16px;
    display: flex;
    gap: 8px;
}

.browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
}

.browser-dots span:nth-child(1) { background: #ef4444; }
.browser-dots span:nth-child(2) { background: #f59e0b; }
.browser-dots span:nth-child(3) { background: #10b981; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

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

.btn-primary {
    background: var(--color-accent-gradient);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(6, 182, 212, 0.4);
}

.btn-secondary {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

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

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

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

.section-title {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.section-subtitle a,
.service-description a,
.portfolio-description a,
.hero-description a,
.about-text a,
.pricing-intro a,
.faq-answer a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: all var(--transition-fast);
}

.section-subtitle a:hover,
.service-description a:hover,
.portfolio-description a:hover,
.hero-description a:hover,
.about-text a:hover,
.pricing-intro a:hover,
.faq-answer a:hover {
    color: var(--color-accent-light);
    text-decoration-thickness: 2px;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    background: var(--color-bg-alt);
}

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

.service-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-lg);
    color: white;
    margin-bottom: var(--spacing-lg);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.service-features {
    margin-bottom: var(--spacing-lg);
}

.service-features li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.service-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-surface-elevated);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.tech-badge-lg {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text {
    margin-bottom: var(--spacing-xl);
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-text strong {
    color: var(--color-text);
}

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

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-accent);
}

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-suffix {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

/* ============================================
   CERTIFICATIONS SECTION
   ============================================ */
.certifications {
    background: var(--color-bg-alt);
}

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

.certification-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    position: relative;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

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

.certification-logo {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--color-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: white;
}

.certification-logo.microsoft {
    background: linear-gradient(135deg, #00a4ef 0%, #7fba00 50%, #f25022 100%);
}

.certification-logo.has-image {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xs);
}

.certification-logo.has-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.certification-content {
    flex: 1;
    min-width: 0;
}

.certification-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.certification-issuer {
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.certification-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.certification-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.certification-skills span {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    background: var(--color-surface-elevated);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
}

.certification-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.certification-badge.new {
    background: var(--color-accent);
    color: white;
}

/* ============================================
   REFERENCES / SECTEURS SECTION
   ============================================ */
.references {
    background: var(--color-bg);
}

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

.reference-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.reference-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.reference-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: 50%;
}

.reference-icon svg {
    color: white;
}

.reference-card h3 {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.reference-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   PORTFOLIO SECTION
   ============================================ */
.portfolio {
    background: var(--color-bg-alt);
}

.portfolio-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.portfolio-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.portfolio-features {
    margin-bottom: var(--spacing-xl);
}

.portfolio-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    color: var(--color-text);
    font-weight: 500;
}

.portfolio-features svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.project-title {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    padding-left: var(--spacing-md);
    border-left: 4px solid var(--color-primary);
}

.project-title:first-of-type {
    margin-top: 0;
}

.portfolio-reverse {
    direction: rtl;
}

.portfolio-reverse > * {
    direction: ltr;
}

.project-placeholder {
    background: var(--color-accent-gradient);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    min-height: 300px;
    color: white;
}

.project-placeholder svg {
    opacity: 0.9;
}

.project-placeholder span {
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-align: center;
}

.project-image-container {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.project-image {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

/* ============================================
   TECHNOLOGIES SECTION
   ============================================ */
.tech-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.tech-category {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.tech-category:hover {
    box-shadow: var(--shadow-lg);
}

.tech-category-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-badge-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface-elevated);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.tech-badge-icon:hover {
    background: var(--color-accent);
    color: white;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.tech-badge-icon:hover .badge-dot {
    background: white;
}

/* ============================================
   PROCESS SECTION
   ============================================ */
.process {
    background: var(--color-bg-alt);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 60px;
    right: 60px;
    height: 2px;
    background: var(--color-border);
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 800;
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.step-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.step-content:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-elevated);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    margin: 0 auto var(--spacing-md);
}

.step-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.step-list {
    text-align: left;
}

.step-list li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.step-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.pricing-intro {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
}

.pricing-modes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.pricing-mode {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.pricing-mode:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.pricing-mode-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-lg);
    color: white;
    margin: 0 auto var(--spacing-md);
}

.pricing-mode h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.pricing-mode p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.pricing-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.pricing-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.pricing-badge svg {
    color: var(--color-success);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq {
    background: var(--color-bg);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: none;
    border: none;
    font-family: inherit;
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-question svg {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-text-secondary);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-xl) var(--spacing-lg);
}

.faq-answer p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background: var(--color-bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-3xl);
}

/* Contact Form */
.contact-form {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

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

.form-group-full {
    grid-column: 1 / -1;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    font-family: inherit;
    font-size: var(--font-size-base);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

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

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-error);
    min-height: 16px;
}

.form-submit {
    grid-column: 1 / -1;
    width: fit-content;
}

.form-success {
    grid-column: 1 / -1;
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-md);
    color: var(--color-success);
    font-weight: 500;
}

.form-success.show {
    display: flex;
}

/* ============================================
   HERO CAROUSEL
   ============================================ */
.hero-carousel {
    position: relative;
    width: 100%;
    max-width: 450px;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-carousel-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1/1;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--color-surface-elevated);
}

.hero-carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.hero-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.hero-dot.active {
    background: white;
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .hero-carousel {
        max-width: 280px;
        margin: 0 auto;
    }
}

/* Honeypot anti-spam (caché) */
.form-group-hp {
    position: absolute;
    left: -9999px;
    top: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

/* Contact Info */
.contact-info {
    padding: var(--spacing-xl);
}

.contact-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
}

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

.contact-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
}

.contact-list svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-list a {
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

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

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

.footer-brand p {
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

.footer-nav h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
    color: white;
}

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

.footer-nav a {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-social h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: white;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-accent-gradient);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 99;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.back-to-top svg {
    color: white;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation for cards */
.services-grid .service-card:nth-child(1) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.2s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.3s; }
.services-grid .service-card:nth-child(4) { transition-delay: 0.4s; }
.services-grid .service-card:nth-child(5) { transition-delay: 0.5s; }
.services-grid .service-card:nth-child(6) { transition-delay: 0.6s; }

.process-step:nth-child(1) { transition-delay: 0.1s; }
.process-step:nth-child(2) { transition-delay: 0.2s; }
.process-step:nth-child(3) { transition-delay: 0.3s; }
.process-step:nth-child(4) { transition-delay: 0.4s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

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

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

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

    .process-timeline::before {
        display: none;
    }

    .tech-categories {
        grid-template-columns: 1fr;
    }

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

/* Mobile Landscape */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-bg);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 999;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    }

    [data-theme="dark"] .nav-menu {
        background-color: #0f172a;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
    }

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

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

    .nav-cta {
        margin-top: var(--spacing-md);
        text-align: center;
        border-bottom: none;
    }

    .nav-toggle {
        display: flex;
    }

    .accessibility-toggles {
        position: absolute;
        right: 60px;
        margin-left: 0;
    }

    .accessibility-toggle,
    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .hero {
        padding-top: 100px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: var(--spacing-lg);
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
        padding-top: var(--spacing-xl);
    }

    .hero-image-placeholder,
    .portfolio-carousel {
        max-width: 300px;
        margin: 0 auto;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .stat-card {
        flex: 1 1 150px;
        max-width: 200px;
    }

    .references-grid {
        grid-template-columns: 1fr;
    }

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

    .reference-icon {
        width: 60px;
        height: 60px;
    }

    .reference-icon svg {
        width: 30px;
        height: 30px;
    }

    .portfolio-showcase {
        grid-template-columns: 1fr;
    }

    .portfolio-visual {
        order: -1;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

    .pricing-modes {
        grid-template-columns: 1fr;
    }

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

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

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

    .social-links {
        justify-content: center;
    }
}

/* Mobile Portrait */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
        --spacing-4xl: 3rem;
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .btn {
        width: 100%;
    }

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

    .about-stats {
        flex-direction: column;
        align-items: center;
    }

    .stat-card {
        width: 100%;
        max-width: 100%;
    }

    .pricing-info {
        flex-direction: column;
        align-items: center;
    }
}

/* ============================================
   LOADING STATE
   ============================================ */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   LOGO IMAGE
   ============================================ */
.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

/* ============================================
   PORTFOLIO CAROUSEL
   ============================================ */
.portfolio-carousel {
    position: relative;
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: var(--color-surface);
}

.carousel-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
    box-shadow: var(--shadow-md);
}

.carousel-btn:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: 12px;
}

.carousel-next {
    right: 12px;
}

.carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.carousel-dot.active {
    background: white;
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .portfolio-carousel {
        max-width: 100%;
    }

    .carousel-btn {
        width: 36px;
        height: 36px;
    }

    .carousel-prev {
        left: 8px;
    }

    .carousel-next {
        right: 8px;
    }
}

/* Carousel clickable */
.carousel-slide {
    cursor: zoom-in;
}

/* ============================================
   IMAGE MODAL / LIGHTBOX
   ============================================ */
.image-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.image-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.image-modal.active .modal-content img {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.modal-prev {
    left: 20px;
}

.modal-next {
    right: 20px;
}

.modal-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
}

@media (max-width: 768px) {
    .modal-nav {
        width: 44px;
        height: 44px;
    }

    .modal-prev {
        left: 10px;
    }

    .modal-next {
        right: 10px;
    }

    .modal-close {
        top: 10px;
        right: 10px;
        width: 44px;
        height: 44px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .theme-toggle,
    .scroll-indicator,
    .hero-bg {
        display: none !important;
    }

    .section {
        page-break-inside: avoid;
    }
}