/* --- Variables and Base Styles --- */
:root {
    --accent-gradient: linear-gradient(90deg, #ff8c00, #ffc837);
    --accent-color-start: #ff8c00;
    --accent-color-start-rgb: 255, 140, 0;
    --accent-color-end: #ffc837;
}

/* --- DARK Theme Color Scheme --- */
.dark-theme {
    --bg-color: #0d0d0d;
    --bg-color-rgb: 13, 13, 13;
    --primary-color: #1a1a1a;
    --text-color: #f0f0f0;
    --text-secondary-color: #a0a0a0;
    --glass-bg: rgba(26, 26, 26, 0.5);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --card-shadow: 0 10px 20px rgba(0,0,0,0.2);
    --particle-color: "#ffffff";
    --particle-line-color: "#ffffff";
    --filter-btn-bg: #2a2a2a;
    --filter-btn-bg-active: var(--accent-color-start);
    --modal-overlay-bg: rgba(0, 0, 0, 0.8);
    --tag-bg: rgba(255, 255, 255, 0.05);
    --tag-text: #cccccc;
    --border-color: rgba(255, 255, 255, 0.1);
}

/* --- LIGHT Theme Color Scheme --- */
.light-theme {
    --bg-color: #ECECF0;
    --bg-color-rgb: 236, 236, 240;
    --primary-color: #ffffff;
    --text-color: #0d0d0d;
    --text-secondary-color: #555555;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: 1px solid #E0E0E0;
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --particle-color: "#222222";
    --particle-line-color: "#333333";
    --filter-btn-bg: #e0e0e0;
    --filter-btn-bg-active: var(--accent-color-start);
    --modal-overlay-bg: rgba(0, 0, 0, 0.4);
    --tag-bg: #f0f0f0;
    --tag-text: #333333;
    --border-color: #e0e0e0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

body.modal-open {
    overflow: hidden !important;
}


/* --- Custom Scrollbar --- */
body::-webkit-scrollbar { width: 8px; }
body::-webkit-scrollbar-track { background: var(--bg-color); }
body::-webkit-scrollbar-thumb { background-color: var(--accent-color-start); border-radius: 10px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 2; }
section { padding: 120px 0; position: relative; }
.section-title, .gradient-text { transition: color 0.3s; }
.section-title { text-align: center; font-size: 3rem; margin-bottom: 1.5rem; font-weight: 700; color: var(--text-color);}
.gradient-text { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; text-fill-color: transparent; }
.section-subtitle { text-align: center; font-size: 1.2rem; max-width: 700px; margin: 0 auto 4rem; color: var(--text-secondary-color); }
.fade-in { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* --- Header and Controls --- */
header { position: fixed; top: 0; width: 100%; padding: 1rem 0; z-index: 1001; background: var(--glass-bg); backdrop-filter: blur(12px); border-bottom: var(--glass-border); transition: background-color 0.3s, border-color 0.3s; }
nav { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.8rem; font-weight: 800; text-decoration: none; color: var(--text-color); display: flex; align-items: center; gap: 12px; }
.logo-img { height: 40px; width: auto; }
.logo-text { font-size: 1.8rem; font-weight: 800; line-height: 1; }
.logo span { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; text-fill-color: transparent; }
.nav-links { list-style: none; display: flex; align-items: center; }
.nav-links li { margin-left: 2.5rem; }
.nav-links a { color: var(--text-secondary-color); text-decoration: none; font-size: 1rem; font-weight: 500; transition: color 0.3s ease; }
.nav-links a:hover, .nav-links a:focus { color: var(--text-color); }
.controls { display: flex; align-items: center; gap: 1.5rem; margin-left: 2.5rem; }
.control-btn { background: none; border: none; color: var(--text-secondary-color); font-size: 1.2rem; cursor: pointer; transition: color 0.3s; padding: 0.5rem; border-radius: 9999px; display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; }
.control-btn:hover { color: var(--text-color); }
.lang-switcher { display: flex; align-items: center; background: var(--primary-color); border-radius: 9999px; padding: 0.3rem 0.5rem; border: var(--glass-border); transition: background-color 0.3s, border-color 0.3s; }
.lang-btn { background: none; border: none; cursor: pointer; font-family: 'Inter', sans-serif; font-weight: 500; font-size: 1rem; color: var(--text-secondary-color); transition: color 0.3s, background-color 0.3s, font-weight 0.3s; padding: 0.5rem 0.8rem; border-radius: 9999px; }
.lang-btn.active { font-weight: 700; background-color: var(--accent-color-start); color: #0d0d0d; box-shadow: 0 0 8px rgba(255, 140, 0, 0.4); }
.lang-btn:hover:not(.active) { color: var(--text-color); }
.lang-separator { color: var(--text-secondary-color); margin: 0 0.2rem; font-size: 1rem; transition: color 0.3s; }

/* --- Mobile Navigation --- */
.burger-menu { display: none; }
.mobile-nav {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    z-index: 1000;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav ul { list-style: none; padding: 0; margin: 0; text-align: center; }
.mobile-nav li { margin: 1.5rem 0; }
.mobile-nav a { color: var(--text-color); font-size: 2rem; text-decoration: none; }
.mobile-controls { display: flex; align-items: center; gap: 2rem; margin-top: 2rem; border-top: 1px solid var(--glass-border); padding-top: 2rem; }
.mobile-controls .lang-switcher { font-size: 1.5rem; }
.mobile-controls .lang-btn { font-size: 1.5rem; }
.mobile-controls .control-btn { font-size: 1.8rem; }


/* --- Hero Section --- */
#hero { min-height: 100vh; display: flex; align-items: center; padding-top: 80px; overflow: hidden; }
#particles-js { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.hero-content { display: flex; align-items: center; justify-content: center; text-align: center; width: 100%; }
.hero-text { max-width: 800px; }
.hero-text h1 { font-size: 4.5rem; font-weight: 800; line-height: 1.1; margin-bottom: 1.5rem; color: var(--text-color); }
.hero-text p { font-size: 1.3rem; color: var(--text-secondary-color); margin-bottom: 2.5rem; }
.cta-button { display: inline-block; padding: 16px 40px; background: var(--accent-gradient); color: #000; text-decoration: none; font-size: 1.1rem; font-weight: bold; border-radius: 50px; border: none; cursor: pointer; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.cta-button:hover { transform: scale(1.05); box-shadow: 0 0 25px var(--accent-color-start), 0 0 50px var(--accent-color-end); }

/* --- Cards --- */
.card {
    background: var(--primary-color);
    border: var(--glass-border);
    border-radius: 15px;
    padding: 2.5rem 2rem;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s;
    box-shadow: var(--card-shadow);
}
.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1), 0 0 20px var(--accent-color-start);
}
.card-icon { font-size: 2.5rem; margin-bottom: 1rem; display: inline-block; color: var(--accent-color-start); }
.card h3 { font-size: 1.6rem; margin-bottom: 1rem; color: var(--text-color); }
.card p { color: var(--text-secondary-color); }

/* MODIFIED: Use Flexbox for natural centering of the last item */
.services-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}
.services-grid .card {
    flex-basis: 300px; /* Base width */
    flex-grow: 1;      /* Allow cards to grow and fill space */
    max-width: 380px;  /* But prevent them from becoming too wide */
}

/* --- About Me Section --- */
#about { background-color: var(--primary-color); transition: background-color 0.3s; }
.about-content { display: flex; align-items: center; gap: 4rem; }

.about-image-wrapper {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 2px solid var(--glass-border);
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
  transition: transform 0.3s ease;
  background-image: url('../images/about-photo.webp');
  background-size: cover;
  background-position: center 60%;
  background-repeat: no-repeat;
}

.about-image-wrapper:hover {
    transform: scale(1.05);
}

.about-image {
  display: none;
}

.about-text { flex-basis: 60%; }
.about-text h3 { font-size: 2rem; margin-bottom: 1rem; font-weight: 600; }
.tech-stack { margin-top: 2rem; }
.tech-stack .icons { display: flex; gap: 1.5rem; font-size: 2.5rem; flex-wrap: wrap; align-items: center; }
.tech-stack .icons i { color: var(--text-secondary-color); transition: color 0.3s, transform 0.3s; }
.tech-stack .icons i:hover { color: var(--accent-color-start); transform: scale(1.1); }
.tech-text {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 2.5rem;
    color: var(--text-secondary-color);
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    transition: transform 0.3s ease, color 0.3s ease;
}
.about-content .icons .tech-text:hover {
    color: #F76B1C;
    transform: scale(1.1);
}

/* --- Portfolio Section & Modal --- */
.portfolio-filters { display: flex; justify-content: center; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
.filter-btn { background-color: var(--filter-btn-bg); color: var(--text-secondary-color); border: none; padding: 0.75rem 1.5rem; border-radius: 50px; cursor: pointer; font-weight: 500; transition: all 0.3s ease; }
.filter-btn:hover { color: var(--text-color); }
.filter-btn.active { background: var(--accent-gradient); color: #000; font-weight: bold; box-shadow: 0 0 15px var(--accent-color-start); }

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, 340px);
    align-items: stretch;
    gap: 2.5rem;
    justify-content: center;
}

.portfolio-card {
    background: var(--primary-color);
    border-radius: 15px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s;
    box-shadow: var(--card-shadow);
    border: var(--glass-border);
}

.portfolio-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1), 0 0 20px var(--accent-color-start);
}

.portfolio-image {
    height: 250px;
    background-size: cover;
    background-position: center;
    flex-shrink: 0;
}

.portfolio-info {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.portfolio-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.case-link {
    display: inline-block;
    padding-top: 1rem;
    color: var(--accent-color-start);
    text-decoration: none;
    font-weight: 500;
}
.case-link:hover { text-decoration: underline; }
.show-more-container { text-align: center; margin-top: 4rem; }

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    margin-top: auto;
}
.tag {
    background-color: var(--tag-bg);
    color: var(--tag-text);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    line-height: 1.5;
}

/* --- Contact Form --- */
.contact-form { max-width: 700px; margin: 0 auto; background: var(--primary-color); padding: 3rem; border-radius: 15px; border: var(--glass-border); transition: background-color 0.3s, border-color 0.3s; box-shadow: var(--card-shadow); }
.form-group { margin-bottom: 1.5rem; }
.form-group-split { display: flex; gap: 1.5rem; margin-bottom: 0; }
.form-group-split .form-group { flex-basis: 50%; margin-bottom: 0; }
.form-hint { font-size: 0.9rem; color: var(--text-secondary-color); text-align: center; width: 100%; margin: 0.75rem 0 1.5rem 0; transition: color 0.3s; }
.form-hint.error-hint { color: #dc3545; }
.form-control { width: 100%; padding: 1rem; font-size: 1rem; color: var(--text-color); background-color: var(--bg-color); border: 1px solid var(--glass-border); border-radius: 8px; font-family: 'Inter', sans-serif; transition: border-color 0.3s, background-color 0.3s, color 0.3s; }
.form-control:focus { outline: none; border-color: var(--accent-color-start); }
.form-control.error-field { border-color: #dc3545 !important; }
textarea.form-control { min-height: 150px; resize: vertical; }
.form-submit-container { text-align: center; }
.spinner { display: none; width: 20px; height: 20px; border: 3px solid rgba(255,255,255,0.3); border-top-color: #fff; animation: spin 1s ease-in-out infinite; margin: -35px auto 0; position: relative; }
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Feedback Modals --- */
.feedback-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay-bg);
    backdrop-filter: blur(10px);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s ease 0.3s;
}
.feedback-modal-overlay.visible { opacity: 1; visibility: visible; transition-delay: 0s; }
.feedback-modal-content { background: var(--primary-color); color: var(--text-color); padding: 2rem; border-radius: 20px; text-align: center; max-width: 400px; width: 90%; transform: scale(0.95); transition: transform 0.3s ease; box-shadow: var(--card-shadow); }
.feedback-modal-overlay.visible .feedback-modal-content { transform: scale(1); }
.feedback-modal-icon { font-size: 3rem; width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 1.5rem; display: flex; align-items: center; justify-content: center; }
.feedback-modal-icon.success { background: #28a745; color: white; }
.feedback-modal-icon.error { background: #dc3545; color: white; }
.feedback-modal-content h3 { font-size: 1.8rem; margin-bottom: 1rem; }
.feedback-modal-content p { color: var(--text-secondary-color); margin-bottom: 2rem; }
.feedback-modal-content .cta-button { width: 100%; }

/* --- Footer and Scroll-to-Top --- */
.footer {
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid var(--glass-border);
    transition: border-color 0.3s, background-color 0.3s;
    background-color: var(--primary-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-links {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-secondary-color);
    margin: 0 0.8rem;
    transition: color 0.3s ease, transform 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-color);
    transform: scale(1.1);
}

.footer-social-group {
    display: inline-flex;
    align-items: center;
    gap: 15px;
}
.footer-social-group a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    text-decoration: none;
    color: var(--text-secondary-color);
    margin: 0;
}
.footer-social-group a .fab {
    font-size: 1.5rem;
}

.footer-copyright {
    color: var(--text-secondary-color);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-legal {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
}

.footer-legal a {
    color: var(--text-secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: var(--text-color);
}

.legal-separator {
    color: var(--text-secondary-color);
}

.scroll-to-top { position: fixed; bottom: 2rem; right: 2rem; background: var(--accent-gradient); color: #000; width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; text-decoration: none; opacity: 0; visibility: hidden; transform: translateY(20px); transition: opacity 0.3s, visibility 0.3s, transform 0.3s, box-shadow 0.3s; z-index: 999; }
.scroll-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.scroll-to-top:hover { box-shadow: 0 0 15px var(--accent-color-start); }

/* --- Cookie Баннер --- */
.cookie-banner {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background-color: rgba(var(--bg-color-rgb), 0.9);
    color: var(--text-primary-color);
    padding: 20px 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    transform: translateY(200%);
    transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}
.cookie-banner.show {
    transform: translateY(0);
}
.cookie-text {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-color);
}
.cookie-text a {
    color: var(--accent-color-start);
    text-decoration: none;
    font-weight: 500;
}
.cookie-text a:hover {
    text-decoration: underline;
}
.cookie-button {
    padding: 10px 25px;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: linear-gradient(90deg, var(--accent-color-start), var(--accent-color-end));
    color: white;
    white-space: nowrap;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.cookie-button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(247, 107, 28, 0.3);
}

/* --- Стили для страницы с политикой --- */
.legal-container .contact-methods {
    list-style: none;
    padding-left: 0;
}
.legal-container .contact-methods li {
    display: flex;
    align-items: baseline;
    gap: 0.5em;
}

/* --- Responsiveness --- */
@media (max-width: 1024px) {
    .section-title { font-size: 2.2rem; }
    .hero-text h1 { font-size: 3rem; }
    .about-content { flex-direction: column; text-align: center; }
    .about-text .section-title { text-align: center; }
    .tech-stack .icons { justify-content: center; }

    .controls,
    .nav-links {
        display: none;
    }

    .burger-menu {
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        width: 2rem;
        height: 2rem;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 1002;
        position: relative;
    }

    .burger-menu div {
        width: 2rem;
        height: 0.25rem;
        background: var(--text-color);
        border-radius: 10px;
        transition: all 0.3s ease-in-out;
        transform-origin: center;
    }

    .burger-menu.active div:nth-child(1) {
        transform: translateY(10px) rotate(45deg);
    }
    .burger-menu.active div:nth-child(2) {
        opacity: 0;
    }
    .burger-menu.active div:nth-child(3) {
        transform: translateY(-10px) rotate(-45deg);
    }

    .mobile-nav {
        display: flex;
    }

    .form-group-split { flex-direction: column; gap: 0; }
    .form-group-split .form-group:first-child { margin-bottom: 1.5rem; }
    .form-hint { margin-bottom: 1.5rem; margin-top: 0.75rem; }

    .footer-content {
        flex-direction: column;
        gap: 0.8rem;
    }
    .footer-links {
        margin-bottom: 0.5rem;
    }
    .footer-legal {
        flex-direction: column;
        gap: 0.5rem;
    }
    .footer-legal a {
        white-space: nowrap;
    }
    .legal-separator {
        display: none;
    }
    .cookie-banner {
        flex-direction: column;
        text-align: center;
        bottom: 10px;
        left: 10px;
        right: 10px;
    }
}

/* NEW: Add a breakpoint for tablet-sized portfolio grid */
@media (max-width: 800px) {
    .portfolio-grid {
        /* Force a 2-column layout */
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2.5rem;
    }
    .hero-text p {
        font-size: 1.1rem;
    }
}

@media (max-width: 400px) {
    .portfolio-grid {
        /* This will now override the 2-column layout for small screens */
        grid-template-columns: 1fr;
    }
    .portfolio-card {
        width: 100%;
    }
}