/* ==== Design Tokens ==== */
:root {
    --bg-dark: #050505;
    --bg-glass: rgba(255, 255, 255, 0.03);
    --accent: #ff4500;
    --text-primary: #e0e0e0;
    --text-muted: #888;
    --text-light: #fff;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --font-inter: 'Inter', sans-serif;
    --font-outfit: 'Outfit', sans-serif;
    --font-grotesk: 'Space Grotesk', sans-serif;
}

/* ==== Global Reset ==== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

@media (pointer: fine) {
    * {
        cursor: none; /* using our custom cursor only on fine pointer devices */
    }
}

/* Fix for Lenis Smooth Scroll */
html.lenis {
    height: auto;
}
.lenis.lenis-smooth {
    scroll-behavior: auto !important;
}

/* ==== Preloader ==== */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: all; /* Blocks clicks and scrolling during load */
}
.preloader-svg {
    width: 60%;
    max-width: 800px;
}
.svg-text-stroke {
    font-family: var(--font-outfit);
    font-size: 100px;
    font-weight: 700;
    fill: transparent;
    stroke: var(--accent);
    stroke-width: 1.5;
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
}

/* Base */
body {
    background: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-inter);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Global 3D Canvas */
.webgl-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1; /* Above dark background, below content (z-index 2) */
    pointer-events: none;
    opacity: 0.8;
}

/* Background SVG Circuit Lines */
.bg-circuit-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    opacity: 0.15;
}
.circuit-path {
    fill: none;
    stroke: #ff4500;
    stroke-width: 0.2;
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
}

/* Layout Utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ==== Custom Cursor ==== */
.stable-cursor {
    display: none;
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 99999;
    will-change: transform; /* GPU Layer promotion */
    transform: translate3d(0, 0, 0) translate(-50%, -50%);
    transition: width .3s ease, height .3s ease, background .3s ease;
    mix-blend-mode: difference;
}
.stable-cursor.hovered {
    width: 25px;
    height: 25px;
    background: #fff;
}

@media (pointer: fine) {
    .stable-cursor {
        display: block;
    }
}

/* ==== Header & Navigation ==== */
.site-header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 1.5rem 3%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 8000;
    backdrop-filter: blur(12px);
    background: rgba(5, 5, 5, 0.7);
    border-bottom: 1px solid var(--border-subtle);
}
.site-header .logo {
    font-family: var(--font-grotesk);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-light);
    text-decoration: none;
    letter-spacing: 1px;
}
.main-nav ul {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}
.main-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-inter);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}
.main-nav a:hover {
    color: var(--text-light);
}

/* ==== Buttons ==== */
.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--text-light);
    color: var(--bg-dark);
    font-family: var(--font-inter);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 40px;
    text-decoration: none;
    transition: transform 0.3s ease, background 0.3s ease, color .3s ease;
    border: none;
    outline: none;
}
.btn-primary:hover {
    background: var(--accent);
    color: var(--text-light);
    transform: translateY(-3px);
}

/* ==== Hero ==== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 80px; 
    overflow: hidden;
}
.threejs-container {
    position: absolute;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    z-index: 0;
    opacity: 0.45;
    pointer-events: none; /* Возвращаем none, чтобы Spline не воровал скролл и клики */
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 2rem;
}
.hero-eyebrow {
    font-family: var(--font-grotesk);
    font-size: 0.85rem;
    letter-spacing: 3px;
    color: var(--text-muted);
    margin-bottom: 2rem;
}
.hero-content h1 {
    display: inline-block;
    font-family: var(--font-outfit);
    font-size: clamp(3rem, 7vw, 6.5rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}
.hero-description {
    font-family: var(--font-inter);
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 3rem;
}

/* ==== Sections Common ==== */
section {
    padding: 8rem 5%;
    position: relative;
    z-index: 2;
}
.section-title {
    font-family: var(--font-outfit);
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: -0.02em;
    color: var(--text-light);
    margin-bottom: 4rem;
}

/* Variable Font Interactive Characters */
.interactive-heading .word {
    display: inline-block;
    white-space: nowrap;
}
.interactive-heading .char {
    display: inline-block;
    transition: font-weight 0.4s cubic-bezier(0.25, 1, 0.5, 1), color 0.4s ease;
    font-variation-settings: 'wght' 500;
}
.interactive-heading .char:hover {
    color: var(--accent);
    font-variation-settings: 'wght' 900;
}

/* ==== Services ==== */
.services-section {
    background: #080808;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}
.services-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}
.services-sticky-col {
    position: sticky;
    top: 150px;
}
.services-desc {
    font-family: var(--font-inter);
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.6;
}
.services-spline-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    margin-top: 1rem;
    overflow: hidden; 
    border-radius: 16px;
    opacity: 0.9;
}
.services-spline-wrapper spline-viewer {
    position: absolute;
    width: 120%;
    height: 120%;
    top: -10%;
    left: -10%;
    transform: scale(1.1); /* Скрываем водяной знак */
    pointer-events: auto; /* Оставляем возможность крутить модель мышкой */
}
.services-scroll-col {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.service-card {
    background: var(--bg-dark);
    padding: 3.5rem 2.5rem;
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    transition: transform 0.4s ease, border-color 0.4s ease;
    display: block;
    text-decoration: none;
}
.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.15);
}
.card-icon {
    font-family: var(--font-grotesk);
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-subtle);
}
.service-card h3 {
    font-family: var(--font-outfit);
    font-size: 1.7rem;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 1rem;
}
.service-card p {
    font-family: var(--font-inter);
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

.card-more {
    font-family: var(--font-inter);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.8;
    transition: opacity 0.3s ease, gap 0.3s ease;
}

.service-card:hover .card-more {
    opacity: 1;
    gap: 1rem;
}

/* ==== Tech Stack Marquee ==== */
.stack-section {
    padding: 5rem 0;
    overflow: hidden;
    background: var(--bg-dark);
}
.marquee-wrapper {
    display: flex;
    width: max-content;
    animation: marqueeScroll 25s linear infinite;
}
.marquee-text {
    font-family: var(--font-grotesk);
    font-size: clamp(2.5rem, 4vw, 4.5rem);
    font-weight: 500;
    color: transparent;
    -webkit-text-stroke: 1px var(--text-muted);
    white-space: nowrap;
    padding-right: 2rem;
}
.marquee-text .bullet {
    color: var(--accent);
    -webkit-text-stroke: 0;
    font-size: clamp(1.5rem, 3vw, 3rem);
    margin: 0 1.5rem;
    vertical-align: middle;
}
@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.portfolio-section {
    position: relative;
    overflow: hidden;
    padding-bottom: 10rem;
}
#portfolio-donut-container {
    position: absolute;
    top: 35%;
    right: 2%;
    width: 450px;
    height: 450px;
    z-index: 0;
    pointer-events: none;
    opacity: 0.7;
}
.portfolio-list {
    display: flex;
    flex-direction: column;
}
.project-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 3rem 0;
    border-top: 1px solid var(--border-subtle);
    transition: padding 0.4s ease;
    position: relative;
}
.project-row:last-child {
    border-bottom: 1px solid var(--border-subtle);
}
.project-info {
    z-index: 2;
    transition: transform 0.4s ease;
}
.project-title {
    font-family: var(--font-outfit);
    font-size: clamp(2rem, 5vw, 4.5rem);
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.4s ease;
}
.project-category {
    font-family: var(--font-inter);
    font-size: 1rem;
    color: #666;
    margin-top: 0.5rem;
}
.project-image-wrapper {
    position: absolute;
    right: 2%;
    width: 40vw;
    max-width: 600px;
    aspect-ratio: 16 / 9;
    opacity: 0;
    transform: scale(0.95) translate3d(0, 15px, 0);
    overflow-y: auto;
    overflow-x: hidden;
    border-radius: 16px;
    pointer-events: none;
    transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: 10;
    display: flex;
    flex-direction: column;
}
.project-image-wrapper::-webkit-scrollbar {
    width: 4px;
}
.project-image-wrapper::-webkit-scrollbar-track {
    background: transparent;
}
.project-image-wrapper::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}
.project-image-wrapper:hover::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.5);
}
.project-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.project-row:hover .project-info {
    transform: translateX(20px);
}
.project-row:hover .project-title {
    color: var(--text-light);
}
.project-row:hover .project-image-wrapper {
    opacity: 1;
    transform: scale(1) translate3d(0, 0, 0);
    pointer-events: auto;
}

/* Scroll Hint Badge inside portfolio images */
.project-image-wrapper::before {
    content: "Скролл ↕";
    position: sticky;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--accent);
    border: 1px solid rgba(255, 69, 0, 0.4);
    padding: 0.4rem 1rem;
    font-family: var(--font-grotesk);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 30px;
    z-index: 100;
    pointer-events: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    align-self: center;
    margin-bottom: -2.3rem; /* negative margin to float overlay on top of image */
    animation: badgePulse 2s infinite ease-in-out;
}

@keyframes badgePulse {
    0%, 100% { opacity: 0.85; transform: translateX(-50%) scale(1); }
    50% { opacity: 1; transform: translateX(-50%) scale(1.05); }
}

/* ==== About ==== */
.about-section {
    background: #080808;
    border-top: 1px solid var(--border-subtle);
}
.about-text {
    font-family: var(--font-inter);
    font-size: clamp(1.4rem, 2.8vw, 2.4rem);
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 1250px;
}
.about-text strong, .about-text span {
    color: var(--text-light);
}

/* ==== Contact ==== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    min-height: 500px;
}
.contact-info .section-title {
    margin-bottom: 1.5rem;
    line-height: 1.1;
}
.contact-sub {
    font-size: 1.2rem;
    color: var(--text-muted);
    font-family: var(--font-inter);
}
.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}


.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: var(--bg-glass);
    padding: 3rem;
    border-radius: 16px;
    border: 1px solid var(--border-subtle);
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.form-submit {
    margin-top: 1.5rem;
    align-self: flex-start;
}

/* ==== Footer ==== */
.site-footer {
    padding: 4rem 5%;
    background: var(--bg-dark);
    border-top: 1px solid var(--border-subtle);
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
.footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.footer-logo {
    font-family: var(--font-grotesk);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-light);
}
.footer-copy {
    font-family: var(--font-inter);
    font-size: 0.9rem;
    color: #555;
}
.footer-privacy {
    font-family: var(--font-inter);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
    margin-top: 0.5rem;
}
.footer-privacy:hover {
    color: var(--text-light);
}
.footer-links {
    display: flex;
    gap: 2rem;
}
.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-inter);
    font-size: 0.95rem;
    transition: color 0.3s ease;
}
.footer-links a:hover {
    color: var(--text-light);
}

::selection {
    background: var(--text-light);
    color: var(--bg-dark);
}

/* ==== Cookie Banner ==== */
.cookie-banner {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 10000;
    max-width: 400px;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: translateY(150%);
}
.cookie-title {
    font-family: var(--font-outfit);
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}
.cookie-text {
    font-family: var(--font-inter);
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 1.5rem;
}
.cookie-text a {
    color: var(--accent);
    text-decoration: underline;
}
.cookie-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.cookie-btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
}
/* Custom Checkbox */
.cookie-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-inter);
    font-size: 0.85rem;
    color: var(--text-light);
    position: relative;
    cursor: pointer;
}
.cookie-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}
.checkmark {
    width: 20px;
    height: 20px;
    background-color: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.cookie-checkbox input:checked ~ .checkmark {
    background-color: var(--accent);
    border-color: var(--accent);
}
.cookie-checkbox input:checked ~ .checkmark:after {
    content: "✓";
    color: white;
    font-size: 14px;
}


/* ==== About Section Layout ==== */
.about-container {
    width: 100%;
}

.form-group label {
    font-family: var(--font-inter);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary); /* Четкий яркий цвет заголовка */
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group input, .form-group textarea {
    padding: 1rem 0;
    background: none;
    border: none;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-light);
    font-family: var(--font-inter);
    font-size: 1.1rem;
    transition: border-color 0.3s ease;
}
.form-group input::placeholder, .form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.25); /* Темный цвет подсказок, чтобы не сливались с заголовками */
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--text-light);
}
.form-group textarea {
    resize: none;
    overflow: hidden;
    min-height: 35px; /* Выравниваем высоту с инпутами */
}
.form-submit-row {
    display: flex;
    align-items: center;
    justify-content: space-between; /* Align button to left, robot to far right */
    margin-top: 1.5rem;
}
#contact-robot-container {
    width: 90px;
    height: 90px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    background: transparent;
}
#contact-shape-container {
    width: 100%;
    height: 380px;
    margin-top: 2rem;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}
/* ==== Benefits List Styling ==== */
.benefits-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    margin-top: 1.5rem;
}
.benefits-list li {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.25rem;
    align-items: start;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-subtle);
    transition: padding-left 0.3s ease, border-color 0.3s ease;
}
.benefits-list li:last-child {
    border-bottom: none;
}
.benefits-list li:hover {
    padding-left: 0.5rem;
    border-bottom-color: rgba(255, 69, 0, 0.2);
}
.benefits-list .bullet {
    color: var(--accent);
    font-size: 0.9rem;
    line-height: 1.6;
    display: inline-block;
    transition: transform 0.3s ease;
}
.benefits-list li:hover .bullet {
    transform: rotate(90deg) scale(1.2);
}
.benefits-list .content {
    line-height: 1.6;
}
.benefits-list strong {
    color: var(--text-light);
    font-weight: 600;
}

/* ==== Responsive ==== */
@media (max-width: 992px) {
    .services-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .services-sticky-col {
        position: relative;
        top: 0;
        margin-bottom: 1rem;
    }
    .services-spline-wrapper, #contact-robot-container, #contact-shape-container {
        display: none; /* Прячем 3D-модели для экономии места и производительности на мобильных */
    }
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    /* Portfolio styling for mobile/tablet */
    .project-row {
        flex-direction: column;
        align-items: flex-start;
        padding: 2.5rem 0;
        gap: 1.5rem;
    }
    .project-row:hover .project-info {
        transform: none;
    }
    .project-info {
        width: 100%;
    }
    .project-title {
        color: var(--text-light);
        font-size: clamp(1.8rem, 4.5vw, 2.5rem);
    }
    .project-category {
        color: var(--text-muted);
        font-size: 0.95rem;
    }
    .project-image-wrapper {
        position: relative;
        right: auto;
        width: 100%;
        max-width: 100%;
        opacity: 1;
        transform: none;
        pointer-events: auto;
        display: flex; /* override display: none */
        border: 1px solid var(--border-subtle);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        margin-top: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }
    .project-row:hover .project-image-wrapper {
        transform: none;
        opacity: 1;
    }
}
@media (max-width: 768px) {
    .site-header {
        padding: 1rem 5%;
    }
    .main-nav {
        display: none; /* simple hidden nav for mobile */
    }
    .subpage-header .main-nav {
        display: block !important;
    }
    .subpage-header .main-nav ul {
        gap: 1.2rem;
    }
    .subpage-header .main-nav a {
        font-size: 0.85rem;
    }
    .hero {
        padding-top: 120px;
    }
    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
}

/* ==== Form Submission Status Messages ==== */
.form-status {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: 8px;
    font-family: var(--font-inter);
    font-size: 0.95rem;
    line-height: 1.5;
    text-align: left;
    border: 1px solid transparent;
    display: none;
    transition: all 0.3s ease;
}
.form-status.success {
    background: rgba(0, 255, 100, 0.03);
    border-color: rgba(0, 255, 100, 0.15);
    color: #00ff64;
    text-shadow: 0 0 8px rgba(0, 255, 100, 0.2);
}
.form-status.error {
    background: rgba(255, 69, 0, 0.03);
    border-color: rgba(255, 69, 0, 0.15);
    color: var(--accent);
    text-shadow: 0 0 8px rgba(255, 69, 0, 0.2);
}