:root {
    /* Google Style Orange & White Theme */
    --primary-color: #FF5722;
    --primary-hover: #E64A19;
    --bg-color: #FFFFFF;
    --bg-alt: #F8F9FA;
    --text-main: #202124;
    --text-muted: #5F6368;
    --border-color: #DADCE0;
    --font-family: 'Inter', sans-serif;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);

    /* Google-like Soft Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
    --shadow-google: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 8px;
    /* Slightly rounded corners */
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 8px rgba(255, 87, 34, 0.3);
    transform: translateY(-1px);
}

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

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

.btn-large {
    padding: 14px 32px;
    font-size: 1.125rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    padding: 20px 0;
    transition: var(--transition);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 48px;
    /* Вы можете поменять размер, если логотип кажется слишком большим или маленьким */
    width: auto;
    object-fit: contain;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav a:not(.btn) {
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

.nav a:not(.btn):hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    padding: 200px 0 140px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 50% -20%, rgba(255, 87, 34, 0.05) 0%, #FFFFFF 60%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Services */
.services {
    padding: 120px 0;
    background-color: var(--bg-alt);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 64px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background-color: var(--bg-color);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.service-card:hover {
    box-shadow: var(--shadow-google);
    transform: translateY(-8px);
    border-color: rgba(255, 87, 34, 0.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(255, 87, 34, 0.1);
    color: var(--primary-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 28px;
    height: 28px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.service-card p {
    color: var(--text-muted);
}

/* Banner */
.banner {
    padding: 80px 0;
}

.banner-inner {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    border-radius: 24px;
    padding: 64px;
    text-align: center;
    color: white;
}

.banner-inner h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    color: white;
}

.banner-inner p {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Contact Section */
.contact {
    padding: 100px 0 140px;
    background-color: var(--bg-alt);
}

.contact-card {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-color);
    padding: 64px;
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid var(--border-color);
}

.contact-subtitle {
    color: var(--text-muted);
    margin-bottom: 48px;
    font-size: 1.125rem;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.125rem;
    transition: var(--transition);
}

.contact-btn svg {
    width: 24px;
    height: 24px;
}

.contact-btn.email {
    background-color: white;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.contact-btn.email:hover {
    background-color: var(--bg-alt);
    box-shadow: var(--shadow-sm);
    border-color: var(--text-main);
}

.contact-btn.telegram {
    background-color: #229ED9;
    color: white;
    border: 1px solid transparent;
}

.contact-btn.telegram:hover {
    background-color: #1A86B9;
    box-shadow: 0 4px 12px rgba(34, 158, 217, 0.3);
    transform: translateY(-2px);
}

.contact-btn.max {
    background: linear-gradient(135deg, #161f8a 0%, #2d085f 100%);
    color: white;
    border: 1px solid transparent;
}

.contact-btn.max:hover {
    background: linear-gradient(135deg, #1b259c 0%, #360a70 100%);
    box-shadow: 0 4px 12px rgba(22, 31, 138, 0.4);
    transform: translateY(-2px);
}

/* Portfolio Horizontal Scroll */
.portfolio {
    overflow: hidden;
    background-color: var(--bg-alt);
    /* Changed to slightly grey to separate from white sections */
}

.portfolio-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.portfolio-header {
    padding-bottom: 40px;
}

.portfolio-header .section-title {
    margin-bottom: 0;
    text-align: left;
}

.portfolio-view-all {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.portfolio-view-all:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.portfolio-track {
    display: flex;
    gap: 40px;
    padding: 0 40px;
    width: max-content;
    height: 60vh;
    min-height: 400px;
    will-change: transform;
}

.portfolio-controls {
    display: none;
    gap: 12px;
}

.btn-slider {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
}

.btn-slider:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.portfolio-card {
    position: relative;
    width: 75vw;
    max-width: 900px;
    height: 100%;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
    cursor: pointer;
    transition: var(--transition);
    will-change: transform;
    -webkit-transform: translateZ(0);
}

.portfolio-card:hover {
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.portfolio-card:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.3) 50%, rgba(0, 0, 0, 0) 100%);
    transition: var(--transition);
}

.portfolio-card:hover .portfolio-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0) 100%);
}

.portfolio-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 48px;
    color: white;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.portfolio-tag {
    background-color: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 4px rgba(255, 87, 34, 0.3);
}

.portfolio-title {
    font-size: clamp(2rem, 3vw, 3rem);
    margin-bottom: 12px;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.portfolio-desc {
    font-size: 1.125rem;
    opacity: 0.9;
    max-width: 600px;
    margin-bottom: 24px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.portfolio-btn {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.portfolio-card:hover .portfolio-btn {
    opacity: 1;
    transform: translateY(0);
}

/* Calculator Section */
.calculator {
    background-color: var(--bg-color);
    padding: 100px 0;
}

.calc-wrapper {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    align-items: flex-start;
}

.calc-form {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.calc-step-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-main);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.calc-card {
    position: relative;
    cursor: pointer;
    display: block;
}

.calc-card input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.calc-card-inner {
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    transition: var(--transition);
    background-color: var(--bg-color);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.calc-card:hover .calc-card-inner {
    border-color: #ff9e80;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.calc-card.active .calc-card-inner {
    border-color: var(--primary-color);
    background-color: #fff3f0;
    box-shadow: 0 4px 12px rgba(255, 87, 34, 0.1);
}

.calc-icon {
    margin-bottom: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.calc-icon svg {
    width: 42px;
    height: 42px;
    stroke: var(--primary-color);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    transition: var(--transition);
}

.calc-card:hover .calc-icon svg {
    transform: scale(1.1);
}

.calc-card.active .calc-icon svg {
    stroke-width: 2;
}

.calc-name {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-main);
}

.calc-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.calc-sidebar {
    width: 380px;
    position: sticky;
    top: 100px;
}

.calc-summary {
    background-color: var(--bg-alt);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 32px;
    box-shadow: var(--shadow-google);
}

.calc-summary h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    text-align: center;
}

.calc-result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.calc-result-row span {
    color: var(--text-muted);
    font-size: 1.125rem;
}

.calc-result-row strong {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.calc-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 24px 0;
    text-align: center;
    line-height: 1.5;
}

.calc-submit-btn {
    width: 100%;
    text-align: center;
    padding: 16px;
    display: block;
}

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

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

.footer-copy {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Animations & Reveal Classes */
.reveal {
    opacity: 0;
    will-change: transform, opacity;
}

.reveal.active {
    opacity: 1;
}

.fade-up {
    transform: translateY(50px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-up.active {
    transform: translateY(0);
}

.fade-in {
    transition: opacity 1s ease-in-out;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 140px 0 80px;
    }

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

    .banner-inner {
        padding: 40px 24px;
    }

    .banner-inner h2 {
        font-size: 2rem;
    }

    .contact-card {
        padding: 40px 24px;
    }

    .contact-methods {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    /* Portfolio Responsive */
    .portfolio-card {
        width: 85vw;
    }

    .portfolio-content {
        padding: 32px 24px;
    }

    .portfolio-track {
        padding: 0 20px;
        gap: 20px;
        width: 100%;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
        padding-bottom: 20px;
    }
    
    .portfolio-track::-webkit-scrollbar {
        display: none;
    }

    .portfolio-controls {
        display: flex;
    }

    .portfolio-card {
        scroll-snap-align: center;
    }

    .portfolio-btn {
        opacity: 1;
        transform: translateY(0);
    }

    /* Calculator Responsive */
    .calc-wrapper {
        flex-direction: column;
    }

    .calc-sidebar {
        width: 100%;
        position: static;
        margin-top: 24px;
    }

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

.portfolio-grid .portfolio-card {
    max-width: 100%;
}