/*
  Визитка: монохром + один акцент (зелёный «тест пройден»).
  Тема: светлая/тёмная по системной настройке.
  Скругления: фото и блоки 20px, кнопки и интерактив - pill.
*/

:root {
    --bg: #f3f4f2;
    --surface: #e8eae7;
    --surface-2: #dfe2de;
    --text: #141614;
    --muted: #535955;
    --line: rgba(20, 22, 20, 0.12);
    --accent: #157a4c;
    --accent-ink: #f6f8f6;
    --accent-soft: rgba(21, 122, 76, 0.1);
    --shadow: 0 30px 60px -30px rgba(18, 40, 28, 0.35);
    --grain-opacity: 0.05;

    --font-sans: "Onest", "Segoe UI", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

    --radius: 20px;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);

    --z-header: 10;
    --z-grain: 50;
    --z-skip: 60;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1110;
        --surface: #171a18;
        --surface-2: #1e2220;
        --text: #eaedeb;
        --muted: #9da49f;
        --line: rgba(234, 237, 235, 0.12);
        --accent: #45cf8f;
        --accent-ink: #0b1a12;
        --accent-soft: rgba(69, 207, 143, 0.1);
        --shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.7);
        --grain-opacity: 0.07;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100dvh;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* Лёгкое зерно поверх страницы, в тон чёрно-белому фото */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: var(--z-grain);
    pointer-events: none;
    opacity: var(--grain-opacity);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 6px;
}

::selection {
    background: var(--accent);
    color: var(--accent-ink);
}

.wrap {
    width: 100%;
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: clamp(16px, 4vw, 40px);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: var(--z-skip);
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 600;
    text-decoration: none;
    transform: translateY(-160%);
    transition: transform 0.2s var(--ease);
}

.skip:focus-visible {
    transform: none;
}

/* ---------- Шапка ---------- */

.top {
    position: relative;
    z-index: var(--z-header);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.mark {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid var(--line);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.top-nav {
    display: flex;
    gap: 4px;
}

.top-nav a {
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

/* ---------- Первый экран ---------- */

.hero {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(32px, 6vw, 96px);
    min-height: calc(100dvh - 72px);
    padding-top: clamp(24px, 6vh, 72px);
    padding-bottom: clamp(48px, 8vh, 96px);
}

.hero-text {
    padding-bottom: clamp(0px, 4vh, 48px);
}

.eyebrow {
    margin-bottom: 28px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(3rem, 8.5vw, 7rem);
    font-weight: 600;
    line-height: 0.95;
    letter-spacing: -0.045em;
    margin-bottom: 28px;
}

.lead {
    max-width: 34ch;
    color: var(--muted);
    font-size: clamp(1.05rem, 1.4vw, 1.25rem);
    line-height: 1.55;
    text-wrap: pretty;
    margin-bottom: 40px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 28px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 26px 15px 22px;
    border-radius: 999px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    white-space: nowrap;
    box-shadow: 0 12px 24px -14px var(--accent);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), filter 0.2s var(--ease);
}

.btn .ph {
    font-size: 1.25rem;
}

.btn:active {
    transform: scale(0.98) translateY(1px);
}

.text-link {
    position: relative;
    color: var(--text);
    font-weight: 500;
    text-decoration: none;
    padding-block: 4px;
}

.text-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: currentColor;
    opacity: 0.35;
    transform-origin: left;
    transition: opacity 0.3s var(--ease), transform 0.4s var(--ease);
}

.hero-photo {
    position: relative;
    aspect-ratio: 3 / 4;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    box-shadow: var(--shadow);
    max-height: calc(100dvh - 72px - 96px);
    justify-self: end;
    width: 100%;
}

.hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 40% 60%;
    transform: scale(1.04);
    transition: transform 1.2s var(--ease);
}

/* ---------- Направления ---------- */

.scope {
    padding-block: clamp(72px, 12vh, 140px) clamp(56px, 10vh, 120px);
}

h2 {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.035em;
    margin-bottom: clamp(28px, 4vw, 48px);
}

.scope-grid {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
}

.scope-cell {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 240px;
    padding: clamp(24px, 3vw, 36px);
    border-radius: var(--radius);
    background: var(--surface);
    overflow: hidden;
}

.cell-front {
    grid-row: span 2;
    min-height: 420px;
    background:
        radial-gradient(120% 90% at 100% 0%, var(--accent-soft), transparent 60%),
        var(--surface);
}

.cell-back {
    background: var(--surface-2);
}

.cell-api {
    background: var(--text);
    color: var(--bg);
}

.scope-cell.cell-api p,
.cell-api .tag {
    color: color-mix(in srgb, var(--bg) 72%, var(--text));
}

.cell-api .tag {
    border-color: color-mix(in srgb, var(--bg) 30%, var(--text));
}

.tag {
    position: absolute;
    top: clamp(24px, 3vw, 36px);
    left: clamp(24px, 3vw, 36px);
    padding: 4px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.scope-cell h3 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 10px;
}

.cell-front h3 {
    font-size: clamp(2.6rem, 6vw, 4.75rem);
}

.scope-cell p {
    max-width: 38ch;
    color: var(--muted);
    text-wrap: pretty;
}

/* ---------- Контакты ---------- */

.contacts {
    padding-bottom: clamp(72px, 12vh, 140px);
}

.contact-list {
    list-style: none;
    border-top: 1px solid var(--line);
}

.contact-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 20px;
    padding: 26px 4px;
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid var(--line);
}

.contact-row > .ph:first-child {
    font-size: 1.6rem;
    color: var(--muted);
    transition: color 0.3s var(--ease);
}

.contact-label {
    font-size: clamp(1.25rem, 2.6vw, 1.9rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.contact-value {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    text-decoration: none;
    overflow-wrap: anywhere;
    transition: color 0.2s var(--ease);
}

.contact-row:not(.has-action) .contact-value {
    grid-column: 3;
}

.has-action .contact-value {
    text-decoration: underline;
    text-decoration-color: var(--line);
    text-underline-offset: 4px;
}

.arrow {
    font-size: 1.5rem;
    transition: transform 0.4s var(--ease), color 0.3s var(--ease);
}

.copy {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 9.5rem;
    justify-content: center;
    padding: 9px 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: transparent;
    color: var(--text);
    font: 500 0.9rem/1 var(--font-sans);
    cursor: pointer;
    transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.copy:active {
    transform: scale(0.97);
}

.copy.is-done {
    border-color: var(--accent);
    color: var(--accent);
}

.copy.is-error {
    border-color: #c2412d;
    color: #c2412d;
}

/* ---------- Подвал ---------- */

.foot {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-block: 28px 40px;
    color: var(--muted);
    font-size: 0.9rem;
}

.foot a {
    text-decoration: none;
}

/* ---------- Hover только там, где есть мышь ---------- */

@media (hover: hover) {
    .mark:hover {
        background: var(--text);
        color: var(--bg);
        border-color: var(--text);
    }

    .top-nav a:hover {
        color: var(--text);
        background: var(--surface);
    }

    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 18px 30px -14px var(--accent);
        filter: brightness(1.06);
    }

    .text-link:hover::after {
        opacity: 1;
    }

    .hero-photo:hover img {
        transform: scale(1);
    }

    .contact-row:hover > .ph:first-child,
    .contact-row:hover .arrow {
        color: var(--accent);
    }

    .contact-row:hover .arrow {
        transform: translate(4px, -4px);
    }

    a.contact-value:hover,
    .contact-row:hover span.contact-value {
        color: var(--text);
    }

    .copy:hover {
        background: var(--surface);
    }

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

/* ---------- Анимация ---------- */

@media (prefers-reduced-motion: no-preference) {
    .enter {
        opacity: 0;
        transform: translateY(18px);
        animation: rise 0.9s var(--ease) forwards;
    }

    .d0 { animation-delay: 0.05s; }
    .d1 { animation-delay: 0.15s; }
    .d2 { animation-delay: 0.27s; }
    .d3 { animation-delay: 0.39s; }

    .hero-photo.enter {
        transform: translateY(28px) scale(0.98);
    }

    .js .reveal {
        opacity: 0;
        transform: translateY(22px);
        transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
        transition-delay: calc(var(--stagger, 0) * 80ms);
    }

    .js .reveal.is-in {
        opacity: 1;
        transform: none;
    }
}

@keyframes rise {
    to {
        opacity: 1;
        transform: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* ---------- Адаптив ---------- */

@media (max-width: 860px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        align-items: start;
        gap: 40px;
        padding-top: 32px;
    }

    .hero-text {
        padding-bottom: 0;
    }

    .hero-photo {
        max-height: none;
        aspect-ratio: 4 / 5;
        justify-self: stretch;
    }

    .scope-grid {
        grid-template-columns: 1fr;
    }

    .cell-front {
        grid-row: auto;
        min-height: 300px;
    }

    .scope-cell {
        min-height: 220px;
    }
}

@media (max-width: 560px) {
    .top-nav a:first-child {
        display: none;
    }

    .contact-row {
        grid-template-columns: auto minmax(0, 1fr) auto;
        gap: 6px 14px;
        padding: 22px 0;
    }

    .contact-row > .ph:first-child {
        grid-row: span 2;
        align-self: start;
        margin-top: 4px;
    }

    .contact-row:not(.has-action) .contact-value {
        grid-column: 2;
        grid-row: 2;
    }

    .contact-row .arrow {
        grid-column: 3;
        grid-row: 1;
    }

    .has-action .contact-value {
        grid-column: 2;
        grid-row: 2;
    }

    .has-action .copy {
        grid-column: 3;
        grid-row: 1 / span 2;
        min-width: 0;
        padding: 10px;
    }

    .has-action .copy-text {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
    }

    .foot {
        flex-direction: column;
    }
}