/* ====== Root & Base ====== */
:root {
    color-scheme: dark;
    --bg: #05030d;
    --text: #eef3ff;
    --muted: #b6bcdf;

    --accent-1: #73f3ff;
    --accent-2: #ff7cfb;
    --accent-3: #ffa84e;

    /* Жидкое стекло */
    --glass-bg: rgba(12, 11, 25, 0.55);
    --glass-border: rgba(255, 255, 255, 0.16);
    --glass-inner: rgba(255, 255, 255, 0.06);
    --glass-shadow:
        0 18px 40px rgba(0, 0, 0, 0.65),
        inset 0 0 25px rgba(255, 255, 255, 0.04);

    --radius: 22px;
    --gap: clamp(2rem, 4vw, 3.5rem);

    font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: radial-gradient(circle at top, #070316 0%, #020009 55%, #02020a 100%);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Мягкий фон по всей странице */
body::before {
    content: "";
    position: fixed;
    inset: -20%;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(circle at 15% 15%, rgba(115, 243, 255, 0.15), transparent 55%),
        radial-gradient(circle at 85% 10%, rgba(255, 124, 251, 0.13), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 168, 78, 0.12), transparent 55%),
        radial-gradient(circle at 25% 80%, rgba(90, 150, 255, 0.18), transparent 55%);
    filter: blur(55px);
}

/* ====== Секции ====== */

main, section {
    position: relative;
    padding: var(--gap) clamp(1.2rem, 5vw, 5rem);
}

/* Заголовки секций */
section > h2 {
    text-align: center;
    font-size: clamp(2rem, 6vw, 3.1rem);
    margin: 0 auto 2.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: linear-gradient(120deg, #ffffff, #b9c2ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ====== Header ====== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem clamp(1rem, 4vw, 4rem);
    backdrop-filter: blur(18px);
    background: rgba(5, 3, 13, 0.82);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.logo {
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent-1);
    text-decoration: none;
}

nav ul {
    display: flex;
    gap: 1.4rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: color 0.25s;
}
nav a:hover { color: var(--accent-1); }

.header-cta {
    padding: 0.55rem 1.7rem;
    border-radius: 999px;
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
    color: #000;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: transform 0.25s, box-shadow 0.25s;
}
.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.6);
}

/* ====== Hero ====== */

.hero {
    min-height: 100vh;
    padding-block: clamp(5rem, 13vh, 7.5rem);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

/* контейнер под aurora-canvas */
.particles {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero-content {
    max-width: 880px;
    margin-inline: auto;
    position: relative;
    z-index: 1;
}

.eyebrow {
    display: inline-block;
    padding: 0.35rem 1.1rem;
    border-radius: 999px;
    border: 1px solid rgba(115, 243, 255, 0.4);
    background: rgba(6, 15, 35, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.28em;
    font-size: 0.75rem;
    color: var(--accent-1);
    margin-bottom: 1.4rem;
}

.hero h1 {
    font-size: clamp(3rem, 9vw, 5.8rem);
    margin: 0 0 1.4rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: linear-gradient(130deg, #ffffff, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: clamp(1.05rem, 3.5vw, 1.35rem);
    max-width: 720px;
    margin: 0 auto 2.4rem;
    color: var(--muted);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* Kнопки */
.cta-button,
.ghost-button {
    padding: 1rem 2.6rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.98rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-button {
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
    color: #000;
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.65);
}
.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.75);
}

.ghost-button {
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: var(--text);
    background: rgba(5, 3, 13, 0.45);
    backdrop-filter: blur(10px);
}
.ghost-button:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* Маскот — чтобы не обрезался */
.hero-maskot {
    width: clamp(240px, 40vw, 360px);
    height: auto;
    margin: 3rem auto 1rem;
    display: block;
    object-fit: contain;
    filter: drop-shadow(0 0 28px rgba(115, 243, 255, 0.32));
    animation: float 7s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-18px); }
}

/* ====== Гриды ====== */

.service-grid,
.portfolio-grid,
.tech-grid,
.faq-links {
    display: grid;
    gap: var(--gap);
    width: 100%;
}

/* услуги, метрики, отзывы, тарифы, инсайты, FAQ-ссылки */
.service-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* портфолио */
.portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* стек технологий */
.tech-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

/* ====== Жидкое стекло: карточки ====== */

.service-item,
.portfolio-item,
.stat-card {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;

    background: var(--glass-bg);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    border-radius: var(--radius);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 1.9rem;

    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.3s, background 0.35s;
}

.service-item:hover,
.portfolio-item:hover,
.stat-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(18, 15, 36, 0.8);
    box-shadow:
        0 28px 60px rgba(0, 0, 0, 0.8),
        inset 0 0 32px var(--glass-inner);
}

/* Внутри карточек: заголовки, текст */
.service-item h3,
.portfolio-item h3 {
    margin: 0 0 0.8rem;
    font-size: 1.3rem;
}

.service-item p,
.portfolio-item p {
    margin: 0 0 1.3rem;
    color: var(--muted);
}

/* Прижимаем последний элемент к низу (если это ссылка/кнопка) */
.service-item > *:last-child,
.portfolio-item > *:last-child {
    margin-top: auto;
}

/* Метрики */
.stat-card .stat-value {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 700;
    margin-bottom: 0.4rem;
    background: linear-gradient(150deg, var(--accent-2), var(--accent-1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Портфолио — картинка */
.portfolio-image {
    border-radius: calc(var(--radius) - 6px);
    overflow: hidden;
    margin-bottom: 1.3rem;
}
.portfolio-image img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    display: block;
}

/* Ссылка "Ещё проекты" */
.portfolio-link {
    display: block;
    margin: 2rem auto 0;
    text-align: center;
    color: var(--accent-1);
    text-decoration: none;
    font-size: 0.98rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.portfolio-link:hover { text-decoration: underline; }

/* Теги технологий — мини стекло */
.tech-grid span {
    background: rgba(10, 9, 25, 0.75);
    border-radius: 14px;
    border: 1px dashed rgba(255, 255, 255, 0.22);
    padding: 0.9rem;
    text-align: center;
    color: var(--muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.tech-grid span:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    border-color: var(--accent-1);
}

/* Отзывы */
.author {
    margin-top: 1.2rem;
    font-size: 0.9rem;
    color: var(--muted);
}

/* ====== About ====== */

.about-content {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    color: var(--muted);
}
.about-content ul {
    display: inline-block;
    text-align: left;
    margin-top: 1.5rem;
    padding-left: 1.5rem;
}

/* ====== Process ====== */

.process {
    background: radial-gradient(circle at top, rgba(10, 10, 30, 0.9), rgba(5, 3, 13, 0.98));
    border-block: 1px solid rgba(255, 255, 255, 0.08);
}

.process-list {
    max-width: 900px;
    margin: 2rem auto 0;
    list-style: none;
    padding: 0;
    display: grid;
    gap: 1.3rem;
}

.process-list li {
    padding: 1.7rem 1.6rem;
    border-radius: 18px;
    background: rgba(8, 6, 20, 0.85);
    border-left: 4px solid var(--accent-2);
}

/* ====== FAQ (визуально отделён) ====== */

#faq-main {
    background: radial-gradient(circle at top, rgba(10, 10, 30, 0.9), rgba(5, 3, 13, 0.96));
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto 2.6rem;
    display: grid;
    gap: 0.9rem;
}

details {
    background: rgba(10, 9, 25, 0.85);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 1.1rem 1.4rem;
    backdrop-filter: blur(14px);
    transition: border-color 0.25s, background 0.25s;
}
details[open] {
    border-color: var(--accent-1);
    background: rgba(10, 18, 40, 0.95);
}

summary {
    cursor: pointer;
    list-style: none;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
summary::-webkit-details-marker { display: none; }

/* FAQ-ссылки — те же карточки стекла */
.faq-links a {
    text-decoration: none;
    color: inherit;
}

/* ====== CTA & Contacts ====== */

.cta,
.contacts {
    text-align: center;
}

.cta p,
.contacts p {
    color: var(--muted);
    max-width: 640px;
    margin: 0.5rem auto 1.8rem;
}

/* Иконки соцсетей внизу — яркие и видимые */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.3rem;
    flex-wrap: wrap;
    margin-top: 1.8rem;
}
.social-links a {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;

    background: rgba(7, 6, 18, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--accent-1);
    font-size: 1.5rem;

    backdrop-filter: blur(12px);
    transition: transform 0.25s, background 0.25s, border-color 0.25s, color 0.25s;
}
.social-links a:hover {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    border-color: transparent;
    color: #000;
    transform: translateY(-4px) scale(1.05);
}

/* ====== Footer (чуть уже) ====== */

.footer {
    margin-top: 3rem;
    padding: 1.4rem 1rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--muted);
    background: rgba(5, 3, 13, 0.92);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(18px);
}

.footer p {
    margin: 0.15rem 0;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    align-items: center;
    margin: 0.6rem 0 0.4rem;
    font-size: 0.86rem;
}
.footer-links a {
    color: var(--accent-1);
    text-decoration: none;
}
.footer-links a:hover { text-decoration: underline; }

/* ====== Responsive ====== */

@media (max-width: 1024px) {
    nav ul { gap: 0.9rem; }
}

@media (max-width: 880px) {
    .site-header {
        flex-direction: column;
        gap: 0.7rem;
        align-items: center;
    }
    nav ul {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {
    section {
        padding-inline: 1rem;
        padding-block: 3rem;
    }

    .hero {
        padding-block: 3.7rem 3rem;
    }
    .hero-actions {
        flex-direction: column;
    }
    .cta-button,
    .ghost-button {
        width: 100%;
        max-width: 340px;
    }

    .service-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .service-item,
    .portfolio-item,
    .stat-card {
        padding: 1.6rem;
    }

    .hero-maskot {
        width: 70vw;
        max-width: 290px;
        margin-top: 2.4rem;
    }
}

@media (max-width: 420px) {
    .logo {
        letter-spacing: 0.18em;
    }
}

/* Отключаем hover-подскоки на тач-устройствах */
@media (hover: none) {
    .service-item:hover,
    .portfolio-item:hover,
    .stat-card:hover {
        transform: none;
        box-shadow: var(--glass-shadow);
    }
}