:root {
    --bg-light: #FFFFFF;
    --bg-alt: #F9F9F9;
    --text-main: #1A1A1A;
    --text-muted: #666666;
    --accent: #FF5722;
    --border: #E5E5E5;
    --container-width: 1200px;
    --transition: all 0.3s ease;
}

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

html, body {
    overflow-x: hidden;
    width: 100%;
    position: relative;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

/* --- Navigation (New Sticky Header) --- */

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-alt);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--border);
}

.status-badge .dot {
    width: 8px;
    height: 8px;
    background: #4CAF50;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.5);
    animation: blink 2s infinite;
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.4; }
    100% { opacity: 1; }
}

/* --- Global Components --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.2, 1, 0.3, 1);
    cursor: pointer;
    text-decoration: none;
    border: none;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--text-main);
    color: #FFF !important;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

.btn-secondary:hover {
    background: var(--bg-alt);
    border-color: var(--text-main);
}

.btn-cta {
    background: linear-gradient(135deg, var(--accent) 0%, #FF9800 100%);
    color: #FFF;
    padding: 1.2rem 3.5rem;
    box-shadow: 0 10px 20px rgba(255, 87, 34, 0.2);
}

.btn-cta:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 40px rgba(255, 87, 34, 0.35);
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 0.8rem 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 5000;
    transition: all 0.3s ease;
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    font-size: 1.1rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

.desktop-nav {
    display: block;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}

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

.nav-links .btn-primary {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
}

/* Burger Menu Styles */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 5px;
    z-index: 6000;
}

.burger-menu span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-main);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.burger-menu.active span:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

.burger-menu.active span:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
}

/* Mobile Overlay Styles */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: #FFF;
    z-index: 5500;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    padding: 8rem 2rem;
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.menu-link {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -1px;
}

.menu-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.hide-mobile {
    display: flex;
}

/* --- Hero Section --- */
.hero {
    padding: 12rem 0 10rem 0;
    position: relative;
    overflow: hidden;
    background: #fff;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    width: 100%;
}

/* Orbit container on the right */
.hero-visual-wrapper {
    position: relative;
    width: 100%;
    min-width: 0;
    height: 600px;
}

.orbit-scene {
    position: relative;
    width: 100%;
    height: 420px;
    overflow: visible;
}

.orbit-path-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: visible;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 50; 
    text-align: left;
    pointer-events: none;
}

.hero-content * {
    pointer-events: auto;
}

.hero-tag {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: block;
}

h1 {
    font-size: 4.8rem;
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: 2rem;
    letter-spacing: -2.5px;
    color: #111;
}

.h1-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: #FFF;
    border-radius: 50%;
    margin: 0 10px;
    vertical-align: middle;
    border: 1px solid var(--border);
    overflow: hidden;
    position: relative;
    top: -5px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.h1-icon img {
    width: 60%;
    height: 60%;
    object-fit: contain;
}

.accent-cursive {
    font-family: 'Dancing Script', cursive;
    color: var(--accent);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    display: block;
}

.accent-text {
    -webkit-text-stroke: 1px var(--text-main);
    color: transparent;
}

.hero-subtext {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 500px;
    margin-bottom: 3rem;
    line-height: 1.6;
}

.hero-visual {
    position: relative;
    height: 600px;
}

.floating-mockup {
    position: absolute;
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
    border: 1px solid var(--border);
}

.main-mockup {
    width: 400px;
    height: 500px;
    right: 0;
    top: 0;
    z-index: 2;
}

.sub-mockup {
    width: 250px;
    height: 400px;
    left: 0;
    bottom: 0;
    z-index: 1;
    transform: translate(-20%, 20%);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: flex-start;
}

/* --- Static Tech Cluster 3D Glass --- */
.hero-tech-cluster {
    position: relative;
    width: 100%;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-badge {
    position: absolute;
    animation: float-badge 6s ease-in-out infinite;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), filter 0.3s;
    cursor: pointer;
    /* Optional: add a soft drop shadow directly to the badge to emphasize the 3D effect without a harsh black circle */
    filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.15));
}

.tech-badge:hover {
    transform: scale(1.1) translateY(-10px) !important; /* overrides float */
    filter: drop-shadow(0 25px 35px rgba(255, 87, 34, 0.3));
    z-index: 20;
}

.tech-badge img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

/* Cluster Layout (Responsive inside the wrapper) */
.tech-badge-1 { width: 130px; height: 130px; top: 10%; left: 15%; animation-delay: 0s; z-index: 2; }
.tech-badge-2 { width: 110px; height: 110px; top: 45%; left: 5%; animation-delay: 1.2s; z-index: 3; }
.tech-badge-3 { width: 90px; height: 90px; bottom: 10%; left: 30%; animation-delay: 2.5s; z-index: 4; }
.tech-badge-4 { width: 170px; height: 170px; top: 30%; left: 40%; animation-delay: 0.5s; z-index: 10; } /* Center focal point */
.tech-badge-5 { width: 120px; height: 120px; top: 5%; right: 15%; animation-delay: 1.8s; z-index: 1; }
.tech-badge-6 { width: 100px; height: 100px; bottom: 25%; right: 10%; animation-delay: 0.8s; z-index: 5; }
.tech-badge-7 { width: 140px; height: 140px; bottom: 5%; right: 35%; animation-delay: 2.1s; z-index: 6; }

@keyframes float-badge {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.2)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 0 40px rgba(99, 102, 241, 0.4)); }
}

/* --- Portfolio Section --- */
.portfolio {
    padding: 15rem 0;
    background: #fff; /* White background */
    color: var(--text-main);
    position: relative;
    overflow: hidden;
}

.portfolio::before {
    content: '';
    position: absolute;
    top: -30%; right: -20%;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(255, 87, 34, 0.03) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}

.portfolio-header {
    margin-bottom: 8rem;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.portfolio-header .header-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 2rem;
}

.portfolio-header .pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: pulse-dot-anim 2s infinite;
}

@keyframes pulse-dot-anim {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 87, 34, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(255, 87, 34, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 87, 34, 0); }
}

.section-title {
    color: var(--text-main);
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.portfolio-header .gradient-text {
    background: linear-gradient(135deg, #FF5722 0%, #FF9800 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

.portfolio-header .gradient-text::after {
    content: 'Кейсы';
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    background: linear-gradient(135deg, #FF5722 0%, #FF9800 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: blur(25px);
    opacity: 0.5;
}

.portfolio-header p {
    color: var(--text-muted);
    font-size: 1.25rem;
    max-width: 600px;
    line-height: 1.6;
}

.complex-grid {
    display: flex;
    flex-direction: column;
    gap: 6rem;
    position: relative;
    z-index: 1;
}

.project-card {
    background: #FFF;
    border-radius: 32px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(800px circle at var(--mouse-x) var(--mouse-y), rgba(255, 87, 34, 0.06), transparent 40%);
    z-index: 3;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

.project-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.1);
    border-color: rgba(255, 87, 34, 0.2);
}

.project-image-wrapper {
    height: 500px;
    position: relative;
    overflow: hidden;
    background: var(--bg-alt);
    perspective: 1000px;
}

.project-img-bg {
    position: absolute;
    inset: 0;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-img-bg {
    transform: scale(1.05);
}

.mockup-composition {
    position: absolute;
    inset: 0;
    z-index: 2;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .mockup-composition {
    transform: scale(1.05);
}

.device-laptop {
    width: 100%;
    height: 100%;
    position: relative;
    transition: transform 0.8s ease;
}

/* Hidden laptop notch */
.device-laptop::before {
    display: none;
}

.device-laptop .screen {
    border-radius: 0;
    overflow: hidden;
    height: 100%;
}

.device-laptop .screen img,
.device-phone .screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.device-phone {
    display: none !important;
}

/* iPhone 14 Pro Dynamic Island */
.device-phone::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 10px;
    background: #000;
    border-radius: 20px;
    z-index: 10;
}

.device-phone .screen {
    border-radius: 20px;
    overflow: hidden;
    height: 100%;
    background: #000;
}

.device-phone .screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}



.project-details {
    padding: 2rem;
    background: #FFF;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 5;
}

.project-details .tag {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: rgba(255, 87, 34, 0.08);
    color: var(--accent);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-details h3 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    transition: color 0.3s;
}

.project-card:hover .project-details h3 {
    color: var(--accent);
}

.project-details p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}



.view-project {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

.view-project:hover {
    color: var(--accent);
    gap: 1rem;
}

.view-project i, .view-project svg {
    width: 20px;
    height: 20px;
}

.view-project:hover i, .view-project:hover svg {
    transform: translateX(4px);
}

/* Strategy Section Styles */
.strategy {
    padding: 100px 0;
    background: var(--bg-main);
}

.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.strategy-step {
    background: #FFF;
    padding: 3rem 2rem;
    border-radius: 24px;
    border: 1px solid var(--border);
    position: relative;
    transition: all 0.5s ease;
    overflow: hidden;
}

.strategy-step:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(255, 87, 34, 0.1);
}

.step-number {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 4rem;
    font-weight: 800;
    color: var(--accent);
    opacity: 0.1;
    font-family: var(--font-main);
    line-height: 1;
}

.step-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.strategy-step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.strategy-step p {
    color: var(--text-muted);
    line-height: 1.6;
}

.strategy-list {
    margin-bottom: 2rem;
}


.strategy-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.strategy-list li i {
    width: 18px;
    height: 18px;
    color: #4CAF50;
}

.strategy-use {
    font-size: 0.95rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* --- Process Section --- */
.process {
    padding: 10rem 0;
    background: #000;
    color: #FFF;
}

.process .section-title {
    color: #FFF;
}

.roadmap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.roadmap-item {
    position: relative;
}

.step-num {
    font-size: 4rem;
    font-weight: 800;
    opacity: 0.1;
    display: block;
    margin-bottom: -2rem;
}

.roadmap-item h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.roadmap-item p {
    color: #AAA;
    font-size: 0.95rem;
}

/* --- Services Section --- */
.services {
    padding: 10rem 0;
}

.services .section-title {
    margin-bottom: 4rem;
}

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

.service-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.02);
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.08);
    border-color: var(--accent);
}

.service-icon-wrapper {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    transition: transform 0.4s ease;
}

.service-card:hover .service-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
}

.service-icon-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 10px 15px rgba(0,0,0,0.1));
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.service-card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* --- Quiz Section --- */
/* --- Quiz Section (Redesign) --- */
.quiz-section {
    padding: 8rem 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-alt) 100%);
    position: relative;
}

.quiz-section .portfolio-header {
    margin-bottom: 6rem;
}

.quiz-card {
    max-width: 100%;
    background: #FFF;
    padding: 4rem 5rem;
    border-radius: 40px;
    border: 1px solid var(--border);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.progress-bar {
    height: 6px;
    background: var(--bg-alt);
    margin: 2.5rem 0;
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #FF9800);
    transition: width 0.8s cubic-bezier(0.65, 0, 0.35, 1);
    box-shadow: 0 0 10px rgba(255, 87, 34, 0.3);
}

.quiz-step-header {
    margin-bottom: 3.5rem;
    text-align: center;
}

.quiz-step-header h3 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -1px;
    color: var(--text-main);
}

.quiz-step-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
}

.option-btn {
    padding: 1.8rem 2.5rem;
    border: 1px solid var(--border);
    background: var(--bg-light);
    border-radius: 24px;
    cursor: pointer;
    text-align: left;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.option-btn:hover {
    border-color: var(--accent);
    background: #FFF;
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(255, 87, 34, 0.1);
}

.option-btn.selected {
    border-color: var(--accent);
    border-width: 2px;
    background: rgba(255, 87, 34, 0.05);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(255, 87, 34, 0.15);
}

.opt-main {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.opt-text {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.opt-label {
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--text-main);
}

.opt-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.opt-price {
    font-weight: 800;
    color: var(--accent);
    font-size: 1.1rem;
    background: rgba(255, 87, 34, 0.08);
    padding: 0.5rem 1rem;
    border-radius: 10px;
    white-space: nowrap;
}

.quiz-footer {
    display: flex;
    gap: 2rem;
    margin-top: 3.5rem;
    justify-content: space-between;
}

#next-btn {
    flex: 1;
    max-width: 300px;
}

#prev-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* --- Marketing Section --- */
.marketing {
    padding: 10rem 0;
    background: var(--bg-alt);
}

.marketing .portfolio-header {
    margin-bottom: 5rem;
}

.marketing-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.marketing-card {
    background: #FFF;
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
}

.marketing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.06);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-main);
}

.platform-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.metric-item {
    padding: 2.5rem 2rem;
    border-radius: 16px;
    color: #FFF;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.metric-item.blue   { background: #4285F4; }
.metric-item.red    { background: #EA4335; }
.metric-item.green  { background: #34A853; }
.metric-item.orange { background: #FBBC05; }

.metric-label {
    font-size: 0.85rem;
    opacity: 0.9;
    font-weight: 500;
}

.metric-value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.metrics-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.metric-sub-item .metric-value {
    color: var(--text-main);
    font-size: 1.8rem;
    font-weight: 800;
    display: block;
}

.metric-sub-item .metric-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: block;
}

.chart-mockup {
    background: var(--bg-alt);
    height: 100px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
}

.chart-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: linear-gradient(to top, rgba(255, 87, 34, 0.1), transparent);
    clip-path: polygon(0% 100%, 10% 80%, 20% 90%, 35% 60%, 50% 70%, 65% 40%, 80% 50%, 100% 20%, 100% 100%);
}

.chart-label {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 700;
    z-index: 1;
}

/* --- Contact Section --- */
.contact {
    padding: 12rem 0;
    background: var(--bg-light);
}

.contact-form {
    max-width: 800px;
    margin: 0 auto;
    background: #FFF;
    padding: 5rem;
    border-radius: 40px;
    border: 1px solid var(--border);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.04);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 1.2rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--bg-alt);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    color: var(--text-main);
}

.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: #FFF;
    box-shadow: 0 0 0 4px rgba(255, 87, 34, 0.1);
}

.contact-form textarea {
    margin-bottom: 2rem;
    min-height: 150px;
    resize: none;
}

.contact-form button[type="submit"] {
    margin: 2rem auto 0 auto;
    display: flex;
    min-width: 280px;
}

@media (max-width: 600px) {
    .contact-form { padding: 3rem 2rem; }
    .form-grid { grid-template-columns: 1fr; }
}

/* --- Footer --- */
footer {
    padding: 5rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

/* --- Mobile Navigation --- */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid var(--border);
    padding: 0.8rem 0.5rem calc(0.8rem + env(safe-area-inset-bottom));
    z-index: 2000;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.05);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 600;
    gap: 0.3rem;
    flex: 1;
    transition: var(--transition);
}

.nav-item i {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
}

.nav-item i, .nav-item svg {
    width: 22px !important;
    height: 22px !important;
    display: block;
    margin-bottom: 4px;
    transition: transform 0.3s ease;
    stroke: currentColor;
    stroke-width: 2px;
}

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

.nav-item.active i, .nav-item.active svg {
    stroke-width: 2.5px;
}


@media (max-width: 768px) {
    .mobile-nav { display: flex; }
    .desktop-nav { display: none; }
    .burger-menu { display: flex; }
    header nav { display: none; }

    .hide-mobile { display: none !important; }
    .complex-grid { gap: 3rem; }


    /* Fix global overflow and horizontal jitter */
    html, body {
        overflow-x: hidden;
        width: 100%;
        position: relative;
    }

    .container { 
        padding: 0 1.25rem; 
        max-width: 100vw;
        overflow: hidden;
    }

    /* Hero App-like Overhaul */
    .hero {
        padding-top: 4rem;
        padding-bottom: 2rem;
        min-height: auto;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .hero-container { 
        grid-template-columns: 1fr; 
        text-align: center;
        gap: 1.5rem;
    }

    .hero-content {
        text-align: center;
        width: 100%;
        padding: 0;
    }

    h1 { 
        font-size: clamp(2rem, 10vw, 2.8rem); 
        letter-spacing: -1.5px;
        margin-bottom: 1rem;
        line-height: 1.1;
    }

    .hero-subtext {
        font-size: 0.95rem;
        margin: 0 auto 2rem auto;
        max-width: 100%;
    }

    .hero-actions {
        flex-direction: column;
        gap: 0.8rem;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
        padding: 1.1rem;
        font-size: 1rem;
    }

    .hero-visual-wrapper {
        height: 400px;
        min-width: 0;
        margin-top: 1rem;
    }

    .orbit-scene {
        height: 350px;
    }

    .hero-tech-cluster {
        height: 380px;
        transform: scale(0.8);
        transform-origin: center center;
    }

    .tech-badge-1 { top: 0% !important; left: 5% !important; }
    .tech-badge-2 { top: 40% !important; left: -5% !important; }
    .tech-badge-3 { bottom: 5% !important; left: 15% !important; } /* Tilda */
    .tech-badge-4 { top: 25% !important; left: 35% !important; } /* HTML5 (Center) */
    .tech-badge-5 { top: 5% !important; right: 5% !important; }
    .tech-badge-6 { bottom: 20% !important; right: -5% !important; } /* Yandex */
    .tech-badge-7 { bottom: -5% !important; right: 20% !important; }

    /* Sections & Text */
    .section-title { 
        font-size: clamp(1.7rem, 8vw, 2.2rem) !important;
        line-height: 1.2;
    }

    .portfolio-header {
        margin-bottom: 2.5rem !important;
    }

    .portfolio-header .header-label {
        font-size: 0.75rem;
        padding: 0.4rem 1.2rem;
    }

    /* Marketing Dashboard */
    .marketing {
        padding: 6rem 0;
    }

    .marketing-dashboard {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .marketing-card {
        padding: 1.5rem;
        border-radius: 20px;
    }

    .marketing-card h3 {
        font-size: 1.3rem;
    }

    /* Quiz App-feel */
    .quiz-card {
        padding: 1.5rem 0.75rem !important;
        border-radius: 20px;
        margin-bottom: 7rem;
    }

    .quiz-step-header h3 {
        font-size: 1.4rem !important;
        line-height: 1.3;
    }

    .options-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .option-btn {
        padding: 1.2rem !important;
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 0.75rem !important;
    }

    .opt-main {
        gap: 1rem !important;
    }

    .opt-label {
        font-size: 1.1rem !important;
    }

    .opt-desc {
        font-size: 0.85rem !important;
    }

    .opt-price {
        font-size: 0.9rem !important;
    }

    .quiz-footer {
        flex-direction: column !important;
        gap: 0.75rem !important;
    }

    #next-btn, #prev-btn {
        max-width: 100% !important;
        width: 100% !important;
        flex: none !important;
    }

    /* Portfolio Items */
    .portfolio {
        padding: 8rem 0;
    }

    .project-card {
        flex-direction: column !important;
        min-height: auto !important;
        margin-bottom: 3rem;
        background: #fff;
    }

    .project-card:nth-child(even) {
        flex-direction: column !important;
    }

    .project-image-wrapper {
        min-height: 280px !important;
        height: 280px !important;
        width: 100% !important;
        flex: none !important;
    }

    .project-details {
        flex: none !important;
        width: 100% !important;
        padding: 2rem 1.5rem !important;
        text-align: left !important;
    }

    .project-details h3 {
        font-size: 1.5rem;
    }

    .mockup-composition {
        transform: none !important;
        width: 100% !important;
        height: 100% !important;
        left: 0 !important;
        top: 0 !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .device-laptop { 
        width: 100% !important; 
        height: 100% !important;
        left: 0 !important; 
        top: 0 !important;
        transform: none !important;
        padding: 0 !important;
        margin: 0 !important;
        border: none !important;
        border-radius: 0 !important;
    }

    /* Footer adjustments */
    footer { 
        padding: 4rem 0 10rem 0; 
    }

    /* Contact Form */
    .contact-form {
        padding: 2rem 1rem;
    }

    .form-grid {
        gap: 1rem;
    }

    .services-grid, .roadmap {
        grid-template-columns: 1fr !important;
        gap: 1.5rem;
    }

    .service-card {
        padding: 2rem 1.5rem;
        width: 100% !important;
    }

    /* Hide unnecessary desktop animations or complex elements */
    .pulse-dot-bg { display: none; }
}

/* --- Quiz Form Step --- */
.quiz-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 500px;
    margin: 2rem auto;
    animation: fadeIn 0.5s ease-out;
}

.quiz-form input {
    width: 100%;
    padding: 1.2rem 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.1);
    background: #fff;
    font-size: 1rem;
    transition: all 0.3s;
}

.quiz-form input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(255, 87, 34, 0.1);
}

.form-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.5;
}

/* --- Quiz Result Styles --- */
.result-card {
    text-align: center;
    padding: 2rem;
    animation: fadeIn 0.6s ease-out;
}

.price-badge {
    margin-bottom: 2.5rem;
}

.price-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.price-value {
    font-size: clamp(2.5rem, 8vw, 4rem);
    color: var(--accent);
    font-weight: 800;
    line-height: 1;
}

.result-summary {
    text-align: left;
    background: var(--bg-alt);
    padding: 2rem;
    border-radius: 20px;
    margin-bottom: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.summary-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.summary-label {
    font-weight: 700;
    color: var(--text-main);
    font-size: 0.95rem;
}

.summary-value {
    color: var(--text-muted);
    font-size: 0.95rem;
    text-align: right;
    max-width: 60%;
}

@media (max-width: 768px) {
    .result-card {
        padding: 1rem 0;
    }
    
    .result-summary {
        padding: 1.5rem;
    }
    
    .summary-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .summary-value {
        text-align: left;
        max-width: 100%;
    }
}