/*
  Sibelcom — ExpoElectronica 2026 Landing
  Design language: Mobile-first, Bold type-first, Bento UI, subtle 3D, brand color #ea522d
*/
:root {
    --bg: #0e0f13; /* deep neutral for contrast */
    --panel: #13151b;
    --panel-2: #0b0c10;
    --text: #e7e8ea;
    --muted: #a7abb3;
    --brand: #ea522d; /* primary */
    --brand-2: #ff6a47; /* gradient partner */
    --accent: #14AFFA; /* tech accent */
    --success: #19c37d;
    --radius: 16px;
    --radius-lg: 22px;
    --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 30px rgba(0, 0, 0, 0.35);
    --grid-gap: 12px;

    /* New font tokens */
    --font-ui: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    --font-display: "Geologica", "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    --w-regular: 400;
    --w-medium: 500;
    --w-semibold: 600;
    --w-bold: 700;
    --w-extrabold: 800;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-ui), system-ui, sans-serif;
    font-weight: var(--w-regular);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    line-height: 1.5;
    letter-spacing: 0.01em;
}

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

.container {
    width: 100%;
    max-width: 1100px;
    margin-inline: auto;
    padding: 0 16px;
}

/* Accessibility */
.skip-link {
    position: absolute;
    left: -9999px;
}

.skip-link:focus {
    left: 12px;
    top: 12px;
    z-index: 1000;
    background: var(--brand);
    color: #fff;
    padding: 8px 12px;
    border-radius: 8px;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: linear-gradient(180deg, rgba(14, 15, 19, .9), rgba(14, 15, 19, .6) 80%, rgba(14, 15, 19, 0));
    backdrop-filter: blur(8px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand img {
    height: 24px;
    width: auto;
}

.nav {
    display: flex;
    gap: 6px;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 8px 10px;
    border-radius: 999px;
    opacity: .9;
    font-size: 0.92rem;
    font-weight: var(--w-semibold);
}

.nav-link:hover {
    background: rgba(231, 232, 234, 0.06);
}

/* Buttons */
.btn {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 12px 16px;
    text-decoration: none;
    font-weight: var(--w-semibold);
    border: 1px solid transparent;
}

.btn--brand {
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff;
    box-shadow: 0 10px 24px rgba(234, 82, 45, .35);
}

.btn--brand:hover {
    filter: brightness(1.05);
}

.btn--ghost {
    color: var(--text);
    border-color: rgba(231, 232, 234, .12);
    background: rgba(231, 232, 234, .04);
}

.btn--ghost:hover {
    border-color: rgba(231, 232, 234, .25);
}

.eyebrow {
    color: var(--accent);
    font-family: var(--font-ui), system-ui, sans-serif;
    font-weight: var(--w-semibold);
    text-transform: uppercase;
    letter-spacing: .16em;
    font-size: .78rem;
    margin: 0 0 8px;
}

.display {
    font-family: var(--font-display), system-ui, sans-serif;
    font-weight: var(--w-extrabold);
    line-height: 1.06;
    letter-spacing: -0.015em;
    font-size: clamp(28px, 7vw, 64px);
    margin: 0 0 12px;
}

.lede {
    color: var(--muted);
    font-size: clamp(14px, 3.8vw, 18px);
    max-width: 62ch;
    margin: 0 0 18px;
}

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding: 22px 0 20px;
}

.hero-canvas-wrap {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-canvas {
    width: 100%;
    height: 100%;
}

.hero-gradient-left {
    position: absolute;
    inset: 0;
    background: radial-gradient(800px 500px at 10% -10%, rgba(45, 234, 213, .14), transparent 60%);
    animation: hero-gradient-left 13s ease-in-out infinite;
}

.hero-gradient-right {
    position: absolute;
    inset: 0;
    background: radial-gradient(1200px 850px at 80% -30%, rgba(234, 82, 45, .15), transparent 60%);
    animation: hero-gradient-right 10s ease-in-out infinite;
}

@keyframes hero-gradient-left {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.5;
    }
}

@keyframes hero-gradient-right {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

.hero-vignette {
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 120px rgba(0, 0, 0, .55);
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 0;
}

/* добавим внутренние отступы контейнеру героя на малых экранах */
@media (max-width: 1099px) {
    .hero .container {
        padding-left: 20px;
        padding-right: 20px
    }
}

/* Find us */
.findus {
    padding: 10px 0 24px;
    margin-top: 20px;
}

.findus-inner {
    display: grid;
    gap: 12px;
}

.findus-copy h2 {
    font-family: var(--font-display), system-ui, sans-serif;
    font-weight: var(--w-bold);
    margin: 0 0 6px;
}

.map-svg {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0;
    margin: 6px 0 0;
    list-style: none;
}

.badge {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(231, 232, 234, .06);
    border: 1px solid rgba(231, 232, 234, .12);
    font-size: .82rem;
    color: var(--text);
}

/* Bento Grid */
.bento {
    padding: 28px 0;
}

.bento-grid {
    display: grid;
    grid-template-columns:1fr;
    gap: var(--grid-gap);
}

.tile {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.00));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
    word-break: break-word;
}

.tile--xl {
    grid-row: auto;
}

.tile--accent {
    background: linear-gradient(180deg, rgba(45, 234, 213, 0.08), rgba(45, 234, 213, 0.00));
}

.tile--expo {
    position: relative;
    overflow: hidden;
}

.tile h2, .tile h3 {
    font-family: var(--font-display), system-ui, sans-serif;
    margin: 0 0 10px;
}

.tile h2 {
    font-size: clamp(22px, 5.2vw, 34px);
    letter-spacing: -0.01em;
}

.tile h3 {
    font-size: clamp(18px, 4.6vw, 26px);
}

.tile p {
    margin: 0 0 10px;
    color: var(--muted);
}

.kpis {
    display: grid;
    grid-template-columns:1fr 1fr;
    gap: 8px;
}

.kpis span {
    display: block;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(231, 232, 234, .04);
    border: 1px dashed rgba(231, 232, 234, .14);
}

.kpis strong {
    color: #fff;
    font-variant-numeric: tabular-nums;
}

.list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 8px;
}

.list--compact {
    gap: 6px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(231, 232, 234, .16);
    color: var(--text);
    text-decoration: none;
    background: rgba(231, 232, 234, .03);
}

/* QR accent */
.qr {
    position: absolute;
    top: -24px;
    right: -24px;
    opacity: .35;
    filter: blur(.4px);
}

.qr-box {
    display: grid;
    grid-template-columns:repeat(2, 16px);
    gap: 8px;
    padding: 12px;
    background: rgba(231, 232, 234, .02);
    border: 1px solid rgba(231, 232, 234, .08);
    border-radius: 12px;
}

.qr-dot {
    width: 16px;
    height: 16px;
    background: var(--brand);
    border-radius: 4px;
    box-shadow: 0 4px 16px rgba(234, 82, 45, .45);
}

.cta {
    display: flex;
    gap: 10px;
}

.expo-cta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 10px 0;
}

/* Contact */
.contact {
    padding: 36px 0;
}

.contact-inner {
    display: grid;
    gap: 18px;
}

.contact-copy h2 {
    font-family: var(--font-display), system-ui, sans-serif;
    font-weight: var(--w-bold);
    margin: 0 0 8px;
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: grid;
    gap: 6px;
}

.link {
    color: #fff;
    text-underline-offset: 4px;
}

.contact-form {
    display: grid;
    gap: 10px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.00));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 16px;
}

.field {
    display: grid;
    gap: 6px;
}

.field span {
    font-size: .88rem;
    color: var(--muted);
}

input, textarea {
    width: 100%;
    padding: 12px 12px;
    border-radius: 12px;
    background: var(--panel);
    border: 1px solid rgba(231, 232, 234, .14);
    color: var(--text);
    font: inherit;
}

input::placeholder, textarea::placeholder {
    color: #7e828a;
}

.form-note {
    margin: 0;
    color: #8c9098;
    font-size: .82rem;
}

/* Footer */
.site-footer {
    padding: 18px 0 36px;
    color: #aeb3bb;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.footer-nav {
    display: flex;
    gap: 12px;
}

.footer-nav a {
    color: inherit;
    text-decoration: none;
}

.footer-nav a:hover {
    color: #fff;
}

.footer-gradients {
    position: relative;
    pointer-events: none;
}

.footer-gradient-left {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100vh;
    background: radial-gradient(800px 500px at 12% 105%, rgba(234, 82, 45, .1), transparent 60%);
    animation: footer-gradient-left 10s ease-in-out infinite;
}

.footer-gradient-right {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100vh;
    background: radial-gradient(1200px 850px at 85% 110%, rgba(45, 234, 213, .1), transparent 60%);
    animation: footer-gradient-right 10s ease-in-out infinite;
}

@keyframes footer-gradient-left {
    0% {
        opacity: 0.15;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 0.15;
    }
}

@keyframes footer-gradient-right {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.15;
    }
    100% {
        opacity: 0.5;
    }
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity .6s ease, transform .6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (min-width: 740px) {
    .hero {
        padding: 44px 0 32px;
    }

    .hero-inner {
        gap: 18px;
    }

    .bento-grid {
        grid-template-columns:repeat(6, 1fr);
    }

    .tile--xl {
        grid-column: span 4;
    }

    .tile {
        grid-column: span 2;
    }

    .tile--accent {
        grid-column: span 3;
    }

    .tile--expo {
        grid-column: span 3;
    }

    .kpis {
        grid-template-columns:repeat(3, 1fr);
    }

    .contact-inner {
        grid-template-columns:1.2fr 1fr;
        align-items: start;
    }

    .findus-inner {
        grid-template-columns:1fr 1.2fr;
        align-items: center;
    }
}

@media (min-width: 1100px) {
    :root {
        --grid-gap: 14px;
    }

    .container {
        padding: 0 20px;
    }

    .header-inner {
        padding: 16px 0;
    }
}