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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--concrete);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo-image {
    height: 40px;
    width: auto;
    display: block !important;
    visibility: visible !important;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    color: var(--graphite);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--graphite);
    transition: var(--transition);
}

.nav-menu li a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    gap: 5px;
}

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

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--graphite);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.scroll-top:hover {
    background-color: var(--dark-gray);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-top.visible {
    display: flex;
}

:root {
    --white: #FFFFFF;
    --light-gray: #F5F5F5;
    --concrete: #E8E8E8;
    --graphite: #2C2C2C;
    --dark-gray: #1A1A1A;
    --text-gray: #666666;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    color: var(--graphite);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 70px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--concrete) 0%, var(--light-gray) 100%);
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><rect fill="%23E8E8E8" width="1200" height="800"/><path d="M0,400 Q300,200 600,400 T1200,400" stroke="%23D0D0D0" stroke-width="2" fill="none" opacity="0.3"/></svg>');
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 40px 20px;
    animation: fadeInUp 1s ease;
}

.hero-logo {
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 10;
}

.logo-image {
    max-width: 300px;
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* .hero-title removed - название уже в логотипе */

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-gray);
    margin-bottom: 30px;
    line-height: 1.5;
}

.hero-tagline {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--graphite);
    margin-bottom: 40px;
    line-height: 1.6;
}

.btn-primary {
    display: inline-block;
    padding: 16px 40px;
    background-color: var(--graphite);
    color: var(--white);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border: 2px solid var(--graphite);
    transition: var(--transition);
    cursor: pointer;
    border-radius: 0;
}

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

/* Section Styles */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--graphite);
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.01em;
}

/* Approach Section */
.approach {
    background-color: var(--white);
}

.approach-text {
    max-width: 900px;
    margin: 0 auto 60px;
    text-align: center;
}

.approach-intro {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--graphite);
    margin-bottom: 25px;
    line-height: 1.6;
}

.approach-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

.approach-benefits {
    margin-top: 50px;
}

.benefits-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--graphite);
    text-align: center;
    margin-bottom: 40px;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.approach-item {
    text-align: center;
    padding: 30px 20px;
    transition: var(--transition);
}

.approach-item:hover {
    transform: translateY(-5px);
}

.approach-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--graphite);
    border: 2px solid var(--concrete);
    border-radius: 0;
    transition: var(--transition);
}

.approach-item:hover .approach-icon {
    border-color: var(--graphite);
    background-color: var(--graphite);
    color: var(--white);
}

.approach-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 10px;
}

.approach-item p {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.approach-item:not(:has(p)) h3 {
    margin-bottom: 0;
}

/* What We Build Section */
.what-we-build {
    background-color: var(--light-gray);
}

.build-intro {
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: center;
}

.build-intro p {
    font-size: 1.25rem;
    color: var(--graphite);
    line-height: 1.8;
}

.build-features {
    margin-bottom: 40px;
}

.features-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--graphite);
    text-align: center;
    margin-bottom: 40px;
}

.build-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.build-note {
    max-width: 800px;
    margin: 50px auto 0;
    text-align: center;
}

.build-note p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    font-style: italic;
}

.build-card {
    background-color: var(--white);
    padding: 0;
    transition: var(--transition);
    border: 1px solid var(--concrete);
}

.build-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.build-card-image {
    width: 100%;
    height: 200px;
    background-color: var(--concrete);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.placeholder-image {
    font-size: 4rem;
    opacity: 0.5;
}

.build-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--graphite);
    margin: 20px 20px 10px;
}

.build-card p {
    font-size: 1rem;
    color: var(--text-gray);
    margin: 0 20px 20px;
    line-height: 1.6;
}

/* Format Work Section */
.format-work {
    background-color: var(--white);
}

.format-work-intro {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
}

.format-work-intro p {
    font-size: 1.25rem;
    color: var(--graphite);
    line-height: 1.8;
}

.format-work-list {
    max-width: 700px;
    margin: 0 auto 40px;
}

.work-list-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 25px;
}

.work-list {
    list-style: none;
    padding: 0;
}

.work-list li {
    font-size: 1.1rem;
    color: var(--text-gray);
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    line-height: 1.6;
}

.work-list li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--graphite);
    font-weight: 600;
}

.format-work-result {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--concrete);
}

.format-work-result p {
    font-size: 1.2rem;
    color: var(--graphite);
    font-weight: 500;
    line-height: 1.8;
}

/* Stages Section */
.stages {
    background-color: var(--light-gray);
}

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

.stage-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--concrete);
    transition: var(--transition);
}

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

.stage-item:hover {
    padding-left: 10px;
}

.stage-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--concrete);
    margin-right: 30px;
    min-width: 60px;
    transition: var(--transition);
}

.stage-item:hover .stage-number {
    color: var(--graphite);
}

.stage-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 10px;
}

.stage-content p {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Why Section */
.why {
    background-color: var(--white);
    padding: 100px 0;
}

.why-list {
    max-width: 700px;
    margin: 0 auto 50px;
}

.why-items {
    list-style: none;
    padding: 0;
}

.why-items li {
    font-size: 1.2rem;
    color: var(--graphite);
    padding: 15px 0;
    padding-left: 35px;
    position: relative;
    line-height: 1.8;
}

.why-items li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--graphite);
    font-weight: 600;
    font-size: 1.3rem;
}

.why-accent {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    border: 2px solid var(--graphite);
    background-color: var(--light-gray);
    text-align: center;
}

.why-accent-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--graphite);
    line-height: 1.6;
}

/* Gallery Section */
.gallery {
    background-color: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}

.gallery-caption {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--concrete);
}

.gallery-caption p {
    font-size: 1.2rem;
    color: var(--text-gray);
    line-height: 1.8;
    font-style: italic;
}

.gallery-item {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--concrete) 0%, var(--light-gray) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-gray);
    transition: var(--transition);
}

.gallery-item:hover .gallery-placeholder {
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--concrete) 100%);
    transform: scale(1.05);
}

/* Format Section */
.format {
    background-color: var(--light-gray);
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.format-item {
    text-align: center;
    padding: 30px;
    background-color: var(--white);
    border: 1px solid var(--concrete);
    transition: var(--transition);
}

.format-item:hover {
    border-color: var(--graphite);
    transform: translateY(-5px);
}

.format-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 15px;
}

.format-item p {
    font-size: 1rem;
    color: var(--text-gray);
}

.format-note {
    max-width: 800px;
    margin: 50px auto 0;
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--concrete);
}

.format-note p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    font-style: italic;
}

/* Contact Section */
.contact {
    background-color: var(--white);
}

.contact-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 40px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--concrete);
    background-color: var(--white);
    color: var(--graphite);
    transition: var(--transition);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--graphite);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-gray);
}

.contact-form .btn-primary {
    width: 100%;
    margin-top: 10px;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    text-align: center;
    font-size: 0.95rem;
    display: none;
}

.form-message.success {
    display: block;
    background-color: #E8F5E9;
    color: #2E7D32;
    border: 1px solid #4CAF50;
}

.form-message.error {
    display: block;
    background-color: #FFEBEE;
    color: #C62828;
    border: 1px solid #F44336;
}

/* Footer */
.footer {
    background-color: var(--graphite);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    margin-bottom: 20px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.footer-logo-image {
    max-width: 200px;
    width: 100%;
    height: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    display: block !important;
    visibility: visible !important;
}

.footer-brand h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.footer-brand p {
    font-size: 1rem;
    color: var(--concrete);
}

.footer-contacts h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.footer-contacts-note {
    font-size: 0.95rem;
    color: var(--concrete);
    margin-bottom: 20px;
}

.footer-messengers {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.messenger-link {
    color: var(--white);
    text-decoration: none;
    font-size: 1rem;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.messenger-link:hover {
    padding-left: 10px;
    border-bottom-color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--concrete);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .logo-image {
        max-width: 250px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-tagline {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    section {
        padding: 60px 0;
    }

    .approach-grid,
    .build-grid,
    .format-grid {
        grid-template-columns: 1fr;
    }

    .work-list li {
        font-size: 1rem;
    }

    .stage-item {
        flex-direction: column;
    }

    .stage-number {
        margin-right: 0;
        margin-bottom: 15px;
    }

    .approach-intro {
        font-size: 1.25rem;
    }

    .approach-description {
        font-size: 1rem;
    }

    .build-intro p {
        font-size: 1.1rem;
    }

    .format-work-intro p {
        font-size: 1.1rem;
    }

    .format-work-result p {
        font-size: 1.1rem;
    }

    .why-items li {
        font-size: 1.1rem;
    }

    .why-accent-text {
        font-size: 1.3rem;
    }

    .gallery-caption p {
        font-size: 1.1rem;
    }

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

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        border-bottom: 1px solid var(--concrete);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .logo-image {
        max-width: 200px;
    }

    .footer-logo-image {
        max-width: 150px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn-primary {
        padding: 14px 30px;
        font-size: 0.95rem;
    }
}