/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --c-bg: #0a0a0c;
    --c-bg-card: #111116;
    --c-bg-card-hover: #18181f;
    --c-surface: #1a1a22;
    --c-border: rgba(255, 255, 255, 0.06);
    --c-border-hover: rgba(100, 180, 255, 0.25);
    --c-text: #e8e8ec;
    --c-text-muted: #8a8a96;
    --c-text-dim: #5a5a66;
    --c-accent: #4dabf7;
    --c-accent-light: #91d5ff;
    --c-accent-glow: rgba(77, 171, 247, 0.15);
    --c-accent-glow-strong: rgba(77, 171, 247, 0.35);
    --c-telegram: #2aabee;
    --c-white: #ffffff;

    /* Typography */
    --f-heading: 'Oswald', sans-serif;
    --f-body: 'Inter', sans-serif;

    /* Spacing */
    --s-container: 1100px;
    --s-gap: 1.5rem;

    /* Effects */
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: 0.15s ease;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--f-body);
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===== SPARKS CANVAS ===== */
#sparks-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.7;
}

/* ===== PAGE WRAPPER ===== */
.page-wrapper {
    position: relative;
    z-index: 1;
}

/* ===== CONTAINER ===== */
.container {
    max-width: var(--s-container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== SECTION TITLE ===== */
.section-title {
    font-family: var(--f-heading);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--c-text);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--c-accent), var(--c-accent-light));
    margin: 0.75rem auto 0;
    border-radius: 2px;
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 0;
    overflow: hidden;
}

.hero__glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--c-accent-glow) 0%, transparent 70%);
    pointer-events: none;
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.15); }
}

.hero__content {
    position: relative;
    z-index: 2;
}

.hero__logo-wrapper {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.hero__logo {
    width: clamp(200px, 40vw, 360px);
    filter: invert(1) drop-shadow(0 0 30px rgba(77, 171, 247, 0.35));
    animation: logoFadeIn 1.2s ease-out;
}

@keyframes logoFadeIn {
    from { opacity: 0; transform: translateY(-20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.hero__title {
    font-family: var(--f-heading);
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
    animation: titleSlideUp 0.8s ease-out 0.3s both;
}

.hero__title-domain {
    color: var(--c-accent);
}

@keyframes titleSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero__subtitle {
    font-size: clamp(0.9rem, 2.2vw, 1.15rem);
    color: var(--c-text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
    animation: titleSlideUp 0.8s ease-out 0.5s both;
}

.hero__cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: titleSlideUp 0.8s ease-out 0.7s both;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 2rem;
    border-radius: 50px;
    font-family: var(--f-body);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn__icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn--primary {
    background: linear-gradient(135deg, var(--c-accent), #2b8ad9);
    color: var(--c-bg);
    box-shadow: 0 4px 20px rgba(77, 171, 247, 0.3);
}

.btn--primary:hover {
    box-shadow: 0 6px 30px rgba(77, 171, 247, 0.5);
    transform: translateY(-2px);
}

.btn--telegram {
    background: rgba(42, 171, 238, 0.12);
    color: var(--c-telegram);
    border: 1px solid rgba(42, 171, 238, 0.25);
}

.btn--telegram:hover {
    background: rgba(42, 171, 238, 0.2);
    border-color: rgba(42, 171, 238, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(42, 171, 238, 0.2);
}

/* ===== SERVICES ===== */
.services {
    padding: 6rem 0;
    background: linear-gradient(180deg, transparent 0%, rgba(77, 171, 247, 0.02) 50%, transparent 100%);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--s-gap);
}

.service-card {
    background: var(--c-bg-card);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--c-border-hover);
    background: var(--c-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 8px 40px rgba(77, 171, 247, 0.08);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.25rem;
    color: var(--c-accent);
    transition: var(--transition);
}

.service-card:hover .service-card__icon {
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px rgba(77, 171, 247, 0.4));
}

.service-card__icon svg {
    width: 100%;
    height: 100%;
}

.service-card__title {
    font-family: var(--f-heading);
    font-size: 1.15rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.6rem;
    color: var(--c-text);
}

.service-card__text {
    font-size: 0.88rem;
    color: var(--c-text-muted);
    line-height: 1.65;
}

/* ===== CONTACT ===== */
.contact {
    padding: 6rem 0;
}

.contact__grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 1.5rem;
    background: var(--c-bg-card);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
}

.contact-card:hover {
    border-color: var(--c-border-hover);
    background: var(--c-bg-card-hover);
    transform: translateX(4px);
    box-shadow: 0 4px 20px rgba(77, 171, 247, 0.06);
}

.contact-card__icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    color: var(--c-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-accent-glow);
    border-radius: 10px;
    padding: 8px;
    transition: var(--transition);
}

.contact-card:hover .contact-card__icon {
    background: var(--c-accent-glow-strong);
}

.contact-card__icon svg {
    width: 100%;
    height: 100%;
}

.contact-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.contact-card__label {
    font-size: 0.75rem;
    color: var(--c-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.contact-card__value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--c-text);
}

.contact-card__arrow {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--c-text-dim);
    transition: var(--transition);
}

.contact-card:hover .contact-card__arrow {
    color: var(--c-accent);
    transform: translate(2px, -2px);
}

/* ===== FOOTER ===== */
.footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--c-border);
}

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

.footer__logo {
    width: 80px;
    filter: invert(1);
    opacity: 0.4;
    transition: var(--transition);
}

.footer__logo:hover {
    opacity: 0.7;
}

.footer__copy {
    font-size: 0.8rem;
    color: var(--c-text-dim);
}

/* ===== SCROLL ANIMATIONS ===== */
.service-card,
.contact-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.service-card.visible,
.contact-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .services__grid {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: 90vh;
        padding: 4rem 0 3rem;
    }

    .hero__logo {
        width: clamp(180px, 55vw, 280px);
    }

    .hero__cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .services,
    .contact {
        padding: 4rem 0;
    }

    .contact-card {
        padding: 1rem 1.25rem;
    }

    .section-title {
        margin-bottom: 2rem;
    }
}