/* =====================================================
   CONSULTING TECHNOLOGIES - Dark Luxury Landing Page
   Color: Electric Blue #3B82F6
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/* === CSS VARIABLES === */
:root {
    --bg-primary: #000000;
    --bg-secondary: #09090B;
    --bg-tertiary: #18181B;
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;
    --primary-200: #BFDBFE;
    --primary-300: #93C5FD;
    --primary-400: #60A5FA;
    --primary-500: #3B82F6;
    --primary-600: #2563EB;
    --primary-700: #1D4ED8;
    --primary-800: #1E40AF;
    --primary-900: #1E3A8A;
    --text-primary: #FFFFFF;
    --text-secondary: #E4E4E7;
    --text-tertiary: #A1A1AA;
    --text-quaternary: #71717A;
    --success: #22C55E;
    --info: #3B82F6;
    --warning: #F59E0B;
    --primary-rgb: 59, 130, 246;
}

/* === RESET & BASE === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.7;
}
h1, h2, h3, h4, h5, h6 { font-family: 'Plus Jakarta Sans', sans-serif; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* === UTILITIES === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-label {
    font-size: 12px; font-weight: 500; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--primary-400);
    display: inline-flex; align-items: center; gap: 8px;
    margin-bottom: 16px;
}
.section-label::before {
    content: ''; width: 24px; height: 2px;
    background: var(--primary-500); display: inline-block;
}
.section-title {
    font-size: 48px; font-weight: 700; line-height: 1.2;
    margin-bottom: 16px; letter-spacing: -0.02em;
}
.section-subtitle {
    font-size: 18px; color: var(--text-tertiary);
    max-width: 600px; line-height: 1.6;
}
.text-gradient {
    background: linear-gradient(135deg, var(--primary-400), var(--primary-500), var(--primary-300));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === NAVBAR === */
.navbar {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    padding: 20px 0; transition: all 0.3s ease;
}
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(var(--primary-rgb), 0.1);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    padding: 12px 0;
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo img { height: 42px; width: 42px; object-fit: contain; }
.nav-logo-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 20px; font-weight: 700; letter-spacing: -0.02em;
}
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-link {
    font-size: 14px; font-weight: 500; color: var(--text-tertiary);
    transition: color 0.3s; position: relative; padding: 4px 0;
}
.nav-link::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 0; height: 2px; background: var(--primary-500);
    transition: width 0.3s ease;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }
.nav-cta {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: #fff; padding: 10px 24px; border-radius: 10px;
    font-size: 14px; font-weight: 600; border: none; cursor: pointer;
    transition: all 0.3s; box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.3);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.5); }

/* Language Toggle */
.lang-toggle {
    display: flex; align-items: center; gap: 0;
    background: rgba(var(--primary-rgb), 0.08);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
    border-radius: 10px; overflow: hidden; margin-left: 8px;
    padding: 2px; height: 36px;
}
.lang-btn {
    padding: 6px 14px; border: none; background: transparent;
    color: var(--text-tertiary); font-size: 13px; font-weight: 600;
    cursor: pointer; border-radius: 8px; transition: all 0.3s;
    font-family: 'Inter', sans-serif; letter-spacing: 0.02em;
}
.lang-btn.active {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: #fff;
    box-shadow: 0 2px 8px rgba(var(--primary-rgb), 0.4);
}
.lang-btn:hover:not(.active) { color: var(--text-primary); }
#langToggleMobile { display: none; }

/* Mobile Menu */
.mobile-menu-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.mobile-menu-toggle span {
    width: 24px; height: 2px; background: var(--text-primary);
    transition: all 0.3s; border-radius: 2px;
}
.mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* === HERO === */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden; padding-top: 80px;
}
.hero-bg-gradient {
    position: absolute; top: -50%; left: 50%; transform: translateX(-50%);
    width: 800px; height: 800px;
    background: radial-gradient(ellipse, rgba(var(--primary-rgb), 0.12) 0%, transparent 70%);
    pointer-events: none;
}
.hero-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center; width: 100%;
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(var(--primary-rgb), 0.1);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
    padding: 8px 16px; border-radius: 100px;
    font-size: 13px; font-weight: 500; color: var(--primary-300);
    margin-bottom: 24px;
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}
.hero-title {
    font-size: 64px; font-weight: 800; line-height: 1.1;
    letter-spacing: -0.03em; margin-bottom: 24px;
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
    opacity: 0;
}
.hero-subtitle {
    font-size: 18px; color: var(--text-tertiary); line-height: 1.7;
    margin-bottom: 36px; max-width: 520px;
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
    opacity: 0;
}
.hero-ctas {
    display: flex; gap: 16px; flex-wrap: wrap;
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.45s forwards;
    opacity: 0;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500), var(--primary-400), var(--primary-500));
    background-size: 200% 200%; animation: gradient-shift 4s ease infinite;
    color: #fff; font-weight: 600; padding: 16px 36px; border-radius: 12px;
    border: none; font-size: 16px; cursor: pointer;
    box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.5), 0 4px 24px rgba(var(--primary-rgb), 0.4),
                inset 0 1px 0 rgba(255,255,255,0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-primary:hover {
    transform: translateY(-2px) scale(1.02); filter: brightness(1.1);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.8), 0 8px 40px rgba(var(--primary-rgb), 0.6);
}
.btn-secondary {
    background: transparent; color: var(--text-secondary);
    padding: 16px 36px; border-radius: 12px; font-size: 16px;
    font-weight: 600; cursor: pointer;
    border: 1px solid rgba(255,255,255,0.15);
    transition: all 0.3s; display: inline-flex; align-items: center; gap: 8px;
}
.btn-secondary:hover {
    border-color: rgba(var(--primary-rgb), 0.5);
    background: rgba(var(--primary-rgb), 0.05);
    transform: translateY(-2px);
}

/* Hero 3D Visual */
.hero-visual {
    position: relative; display: flex; align-items: center; justify-content: center;
    animation: fade-in-rotate 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
    opacity: 0;
}
.hero-sphere {
    width: 420px; height: 420px; position: relative;
    transform-style: preserve-3d; animation: float 6s ease-in-out infinite;
}
.sphere-inner {
    width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.08), rgba(var(--primary-rgb), 0.18));
    border-radius: 50%;
    border: 2px solid rgba(var(--primary-rgb), 0.25);
    box-shadow: 0 0 60px rgba(var(--primary-rgb), 0.3), 0 0 120px rgba(var(--primary-rgb), 0.15),
                inset 0 0 60px rgba(var(--primary-rgb), 0.1);
    backdrop-filter: blur(10px); position: relative; overflow: hidden;
}
.sphere-ring {
    position: absolute; border-radius: 50%;
    border: 1px solid rgba(var(--primary-rgb), 0.2);
}
.sphere-ring:nth-child(1) { width: 120%; height: 120%; top: -10%; left: -10%; animation: spin-slow 20s linear infinite; }
.sphere-ring:nth-child(2) { width: 140%; height: 140%; top: -20%; left: -20%; animation: spin-slow 30s linear infinite reverse; }
.sphere-ring:nth-child(3) { width: 160%; height: 160%; top: -30%; left: -30%; animation: spin-slow 25s linear infinite; }
.sphere-dot {
    position: absolute; width: 6px; height: 6px; border-radius: 50%;
    background: var(--primary-400);
    box-shadow: 0 0 12px rgba(var(--primary-rgb), 0.8);
}
.hero-logo-center {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 120px; height: 120px; object-fit: contain;
    filter: drop-shadow(0 0 30px rgba(var(--primary-rgb), 0.6));
}

/* === PARTICLES === */
.particles-container {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0;
}
.particle {
    position: absolute; width: 3px; height: 3px; border-radius: 50%;
    background: rgba(var(--primary-rgb), 0.4);
    animation: float-particle 20s infinite ease-in-out;
}

/* === SOCIAL PROOF === */
.social-proof {
    padding: 80px 0; border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    background: var(--bg-secondary); position: relative; z-index: 1;
}
.proof-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
    text-align: center;
}
.stat-item { padding: 24px; }
.stat-number {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 48px; font-weight: 800; color: var(--primary-400);
    margin-bottom: 8px;
}
.stat-label { font-size: 14px; color: var(--text-tertiary); font-weight: 500; }

/* === GLASS CARD === */
.glass-card {
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.06) 0%, rgba(var(--primary-rgb), 0.02) 50%, rgba(var(--primary-rgb), 0.06) 100%);
    backdrop-filter: blur(24px) saturate(180%); -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid rgba(var(--primary-rgb), 0.12);
    border-radius: 24px; padding: 32px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.glass-card:hover {
    border-color: rgba(var(--primary-rgb), 0.3);
    box-shadow: 0 25px 50px -12px rgba(var(--primary-rgb), 0.2);
    transform: translateY(-4px);
}

/* === SERVICES - FLIP CARDS === */
.services { padding: 120px 0; position: relative; z-index: 1; }
.services-header { text-align: center; margin-bottom: 64px; }
.services-header .section-subtitle { margin: 0 auto; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.service-card-flip {
    perspective: 1000px; height: 420px; cursor: pointer;
}
.service-card-inner {
    position: relative; width: 100%; height: 100%;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}
.service-card-flip:hover .service-card-inner,
.service-card-flip.flipped .service-card-inner {
    transform: rotateY(180deg);
}
.service-card-front, .service-card-back {
    position: absolute; width: 100%; height: 100%;
    -webkit-backface-visibility: hidden; backface-visibility: hidden;
    border-radius: 24px; overflow: hidden;
}
.service-card-front {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column; justify-content: flex-end;
}
.service-icon-container {
    flex: 1; display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.service-icon-bg {
    width: 140px; height: 140px; border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.15), transparent);
    display: flex; align-items: center; justify-content: center;
    transition: all 0.4s;
}
.service-icon-bg svg {
    width: 64px; height: 64px; stroke: var(--primary-400);
    filter: drop-shadow(0 0 20px rgba(var(--primary-rgb), 0.5));
    transition: all 0.4s;
}
.service-card-flip:hover .service-icon-bg {
    transform: scale(1.1);
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.25), transparent);
}
.service-overlay {
    padding: 24px 28px; background: linear-gradient(transparent, rgba(0,0,0,0.9));
}
.service-title-front {
    font-size: 20px; font-weight: 700;
    font-family: 'Plus Jakarta Sans', sans-serif;
}
.service-card-back {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(var(--primary-rgb), 0.03));
    backdrop-filter: blur(24px); border: 1px solid rgba(var(--primary-rgb), 0.2);
    display: flex; flex-direction: column; justify-content: center;
    padding: 36px;
}
.service-title-back {
    font-size: 22px; font-weight: 700; margin-bottom: 16px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--primary-300);
}
.service-description {
    font-size: 15px; color: var(--text-tertiary); line-height: 1.7;
    margin-bottom: 24px;
}
.service-features { display: flex; flex-wrap: wrap; gap: 8px; }
.feature-tag {
    padding: 6px 14px; border-radius: 100px; font-size: 12px;
    font-weight: 500; background: rgba(var(--primary-rgb), 0.1);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
    color: var(--primary-300);
}

/* === ABOUT === */
.about { padding: 120px 0; background: var(--bg-secondary); position: relative; z-index: 1; }
.about-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 80px; align-items: center; }
.about-image-wrapper { position: relative; }
.about-image-circle {
    width: 320px; height: 320px; border-radius: 50%; margin: 0 auto;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(var(--primary-rgb), 0.05));
    border: 2px solid rgba(var(--primary-rgb), 0.2);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 0 40px rgba(var(--primary-rgb), 0.15);
    position: relative; overflow: hidden;
}
.about-image-circle img { width: 180px; height: 180px; object-fit: contain;
    filter: drop-shadow(0 0 20px rgba(var(--primary-rgb), 0.4)); }
.about-float-card {
    position: absolute; background: var(--bg-tertiary);
    border: 1px solid rgba(var(--primary-rgb), 0.15);
    padding: 16px 20px; border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    animation: float 4s ease-in-out infinite;
}
.about-float-card.card-1 { top: 0; right: -20px; animation-delay: 0s; }
.about-float-card.card-2 { bottom: 20px; left: -20px; animation-delay: 2s; }
.float-card-number {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px; font-weight: 800; color: var(--primary-400);
}
.float-card-label { font-size: 12px; color: var(--text-tertiary); }
.about-content .section-subtitle { max-width: 100%; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.about-feature {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 16px; border-radius: 12px;
    background: rgba(var(--primary-rgb), 0.03);
    border: 1px solid rgba(var(--primary-rgb), 0.08);
    transition: all 0.3s;
}
.about-feature:hover { border-color: rgba(var(--primary-rgb), 0.2); transform: translateY(-2px); }
.about-feature-icon {
    width: 36px; height: 36px; border-radius: 8px; flex-shrink: 0;
    background: rgba(var(--primary-rgb), 0.1);
    display: flex; align-items: center; justify-content: center;
    color: var(--primary-400); font-size: 16px;
}
.about-feature-text h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.about-feature-text p { font-size: 13px; color: var(--text-tertiary); line-height: 1.5; }

/* === TESTIMONIALS === */
.testimonials { padding: 120px 0; position: relative; z-index: 1; }
.testimonials-header { text-align: center; margin-bottom: 64px; }
.testimonials-header .section-subtitle { margin: 0 auto; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.testimonial-card {
    padding: 32px; border-radius: 24px;
    background: var(--bg-tertiary); border: 1px solid rgba(255,255,255,0.06);
    transition: all 0.4s; position: relative;
}
.testimonial-card:hover {
    border-color: rgba(var(--primary-rgb), 0.2);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.testimonial-quote {
    font-size: 40px; color: var(--primary-500); font-family: serif;
    line-height: 1; margin-bottom: 16px;
}
.testimonial-text { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 24px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
    width: 48px; height: 48px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 18px;
    border: 2px solid rgba(var(--primary-rgb), 0.3);
}
.testimonial-info h4 { font-size: 14px; font-weight: 600; }
.testimonial-info p { font-size: 13px; color: var(--text-tertiary); }
.testimonial-stars { display: flex; gap: 2px; margin-bottom: 16px; }
.testimonial-stars span { color: var(--warning); font-size: 14px; }

/* === CTA SECTION === */
.cta-section {
    padding: 120px 0; position: relative; z-index: 1;
    background: var(--bg-secondary); overflow: hidden;
}
.cta-bg {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 600px; height: 600px;
    background: radial-gradient(ellipse, rgba(var(--primary-rgb), 0.15), transparent 70%);
    pointer-events: none;
}
.cta-content { text-align: center; position: relative; z-index: 2; }
.cta-content .section-title { font-size: 42px; max-width: 700px; margin: 0 auto 16px; }
.cta-content .section-subtitle { margin: 0 auto 36px; }
.cta-content .btn-primary {
    font-size: 18px; padding: 20px 48px;
    animation: pulse-glow 3s ease-in-out infinite;
}

/* === FOOTER === */
.footer {
    padding: 80px 0 32px; border-top: 1px solid rgba(255,255,255,0.05);
    position: relative; z-index: 1;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
    margin-bottom: 48px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-tertiary); max-width: 300px; line-height: 1.7; }
.footer-col h4 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 14px; font-weight: 600; margin-bottom: 20px;
    color: var(--text-secondary);
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
    font-size: 14px; color: var(--text-tertiary);
    transition: color 0.3s;
}
.footer-col a:hover { color: var(--primary-400); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 32px; display: flex; justify-content: space-between;
    align-items: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-quaternary); }
.footer-socials { display: flex; gap: 16px; }
.footer-social {
    width: 40px; height: 40px; border-radius: 10px;
    background: rgba(var(--primary-rgb), 0.05);
    border: 1px solid rgba(var(--primary-rgb), 0.1);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-tertiary); font-size: 18px;
    transition: all 0.3s; cursor: pointer;
}
.footer-social:hover {
    background: rgba(var(--primary-rgb), 0.15);
    border-color: rgba(var(--primary-rgb), 0.3);
    color: var(--primary-400); transform: translateY(-2px);
}

/* === SCROLL REVEAL === */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* === KEYFRAMES === */
@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in-rotate {
    from { opacity: 0; transform: scale(0.8) rotate(-10deg); }
    to { opacity: 1; transform: scale(1) rotate(0); }
}
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(2deg); }
    50% { transform: translateY(-10px) rotate(-2deg); }
    75% { transform: translateY(-30px) rotate(1deg); }
}
@keyframes float-particle {
    0%, 100% { transform: translate(0, 0); opacity: 0.3; }
    25% { transform: translate(80px, -80px); opacity: 0.7; }
    50% { transform: translate(-40px, -160px); opacity: 0.5; }
    75% { transform: translate(-80px, -80px); opacity: 0.7; }
}
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.5), 0 4px 24px rgba(var(--primary-rgb), 0.4),
                    0 0 60px rgba(var(--primary-rgb), 0.2);
    }
    50% {
        box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.8), 0 8px 40px rgba(var(--primary-rgb), 0.6),
                    0 0 80px rgba(var(--primary-rgb), 0.4);
    }
}
@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* === MOBILE MENU === */
.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 80%; max-width: 400px;
    height: 100vh; background: rgba(9, 9, 11, 0.98);
    backdrop-filter: blur(24px); z-index: 999;
    padding: 80px 32px 32px; transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 1px solid rgba(var(--primary-rgb), 0.1);
}
.mobile-menu.active { right: 0; }
.mobile-menu-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6); z-index: 998;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.mobile-menu-overlay.active { opacity: 1; pointer-events: auto; }
.mobile-menu .nav-link {
    display: block; padding: 16px 0; font-size: 18px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.mobile-menu .nav-cta { display: block; text-align: center; margin-top: 24px; }

/* === RESPONSIVE === */
@media (max-width: 1023px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-title { font-size: 48px; }
    .hero-subtitle { margin: 0 auto 36px; }
    .hero-ctas { justify-content: center; }
    .hero-visual { margin-top: 40px; }
    .hero-sphere { width: 300px; height: 300px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; text-align: center; }
    .about-image-wrapper { order: -1; }
    .about-content .section-subtitle { margin: 0 auto; }
    .about-features { max-width: 500px; margin: 32px auto 0; }
    .testimonials-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .section-title { font-size: 36px; }
}
@media (max-width: 767px) {
    .nav-links { display: none; }
    .mobile-menu-toggle { display: flex; }
    #langToggleMobile { display: flex; }
    .hero-title { font-size: 36px; }
    .hero-sphere { width: 240px; height: 240px; }
    .hero-logo-center { width: 80px; height: 80px; }
    .services-grid { grid-template-columns: 1fr; }
    .service-card-flip { height: 380px; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .proof-stats { grid-template-columns: 1fr 1fr; }
    .stat-number { font-size: 36px; }
    .about-image-circle { width: 240px; height: 240px; }
    .about-features { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .cta-content .section-title { font-size: 28px; }
    .cta-content .btn-primary { font-size: 16px; padding: 16px 36px; }
}