/* ============================================
   ВЕРБАЛКОМ · классический интерфейс
   editorial · contained · refined
   ============================================ */

body.classic {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-display);
    /* Едва различимая текстура, для более «бумажного» ощущения */
    background-image:
        radial-gradient(circle at 10% 10%, rgba(200, 71, 43, 0.025) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(0, 0, 0, 0.02) 0%, transparent 50%);
    background-attachment: fixed;

    /* Локальные оттенки чернил и линеек */
    --rule-strong: rgba(10, 10, 10, 0.22);
    --ink-soft: rgba(17, 17, 17, 0.92);
    --ink-mid: rgba(17, 17, 17, 0.7);
}

/* Базовые ссылки на classic — без подчёркивания, наследуют цвет.
   :where() даёт нулевую специфичность, чтобы конкретные классы
   (.c-cta, .c-form__submit и т.д.) могли свободно переопределять цвет. */
:where(.classic a) {
    color: inherit;
    text-decoration: none;
}

/* Главный фрейм — всё содержимое в ограниченном поле */
.c-frame {
    max-width: 1240px;
    margin: 0 auto;
    padding: 2.4rem clamp(1.5rem, 5vw, 4rem) 2.4rem;
    position: relative;
}

/* ============================================
   Шапка
   ============================================ */

.c-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0 1.8rem;
    margin-bottom: 3rem;
    border-bottom: 2px solid var(--ink);
}

.c-head__brand {
    display: flex;
    flex-direction: column;
    gap: 0.2em;
}

.c-head__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--ink);
}

.c-head__sub {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 0.9rem;
    color: var(--ink-mid);
    letter-spacing: 0.02em;
}

.c-nav {
    display: flex;
    gap: 1.8rem;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 500;
}

.c-nav a {
    position: relative;
    padding: 0.4em 0;
    transition: opacity 0.3s ease;
}

.c-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.4s var(--ease-soft);
}

.c-nav a:hover::after { width: 100%; }

.c-nav__alt { color: rgba(17, 17, 17, 0.45); }

.c-nav__home {
    color: rgba(17, 17, 17, 0.55);
    font-weight: 500;
}

/* ============================================
   Hero — крупный, на всю ширину фрейма
   ============================================ */

.c-hero {
    padding: 1.5rem 0 5rem;
    position: relative;
}

.c-hero__meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink);
    font-weight: 600;
}

.c-hero__meta span:first-child {
    color: var(--accent);
    font-weight: 700;
}

.c-hero__rule {
    flex: 0 0 100px;
    height: 2px;
    background: var(--ink);
}

.c-hero__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.8rem, 6.8vw, 6rem);
    line-height: 0.98;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
    max-width: 14ch;
    color: var(--ink);
}

.c-hero__title em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
    color: var(--accent);
}

.c-hero__lede {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(1.2rem, 1.7vw, 1.5rem);
    line-height: 1.45;
    max-width: 38em;
    margin-bottom: 2.8rem;
    color: var(--ink-soft);
}

.c-hero__actions {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.c-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.8em;
    padding: 1em 1.8em;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.4s var(--ease-soft), transform 0.4s var(--ease-soft);
}

.c-cta svg { transition: transform 0.4s var(--ease-soft); }
.c-cta:hover {
    background: var(--accent);
    transform: translateY(-2px);
}
.c-cta:hover svg { transform: translateX(5px); }

.c-link-quiet {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink);
    border-bottom: 1px solid var(--ink);
    padding-bottom: 0.3em;
    transition: color 0.3s ease, border-color 0.3s ease;
    font-weight: 500;
}

.c-link-quiet:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ============================================
   Заголовки секций — с большим акцентным номером
   ============================================ */

.c-sec-head {
    display: flex;
    align-items: center;
    gap: 1.6rem;
    margin-bottom: 3rem;
    padding-top: 2.5rem;
    border-top: 2px solid var(--ink);
}

.c-sec-num {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 4.8vw, 4rem);
    line-height: 0.85;
    letter-spacing: -0.02em;
    color: var(--accent);
    font-weight: 300;
    min-width: 2.5ch;
}

.c-sec-head h2 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.35rem, 4.2vw, 2.8rem);
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--ink);
    /* min-width: 0 — критично для flex-детей с длинным текстом,
       без него текст выезжает за родителя */
    min-width: 0;
    flex: 1;
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
}

/* ============================================
   Услуги — три колонки с акцентным верхом
   ============================================ */

.c-services {
    padding: 1.5rem 0 5rem;
}

.c-services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.c-service {
    padding-top: 1.8rem;
    border-top: 2px solid var(--ink);
    transition: border-color 0.3s ease;
    position: relative;
}

.c-service:hover {
    border-top-color: var(--accent);
}

.c-service__num {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-bottom: 1.2rem;
    font-weight: 700;
}

.c-service h3 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.3rem, 1.95vw, 1.65rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.2rem;
    color: var(--ink);
}

.c-service p {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 1.08rem;
    line-height: 1.55;
    color: var(--ink-soft);
}

/* ============================================
   Pull quote — карусель тезисов
   ============================================ */

.c-pull {
    padding: 6rem 2rem 4.5rem;
    margin: 2rem 0;
    text-align: center;
    position: relative;
    background: var(--ink);
    color: var(--paper);
    overflow: hidden;
}

/* Декоративный «/» в фоне — крупный, но в пределах контейнера */
.c-pull::before {
    content: '/';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -52%);
    font-family: var(--font-display);
    font-weight: 200;
    font-size: clamp(16rem, 38vw, 28rem);
    line-height: 0.7;
    color: var(--accent);
    opacity: 0.14;
    pointer-events: none;
}

.c-pull__viewport {
    position: relative;
    z-index: 2;
    overflow: hidden;
}

.c-pull__track {
    display: flex;
    align-items: stretch;
    transition: transform 0.7s var(--ease-soft);
    will-change: transform;
}

.c-pull__slide {
    flex: 0 0 100%;
    width: 100%;
    padding: 0 2rem;
    text-align: center;
    color: var(--paper);
    /* Плавное появление активного слайда */
    opacity: 0.25;
    transition: opacity 0.6s var(--ease-soft);
    margin: 0;
    box-sizing: border-box;
}

.c-pull__slide.is-active {
    opacity: 1;
}

.c-pull__text {
    display: inline-block;
    max-width: 28ch;
    font-family: var(--font-serif);
    font-weight: 400;
    font-style: italic;
    font-size: clamp(1.5rem, 2.8vw, 2.2rem);
    line-height: 1.35;
    letter-spacing: -0.01em;
    text-align: center;
}

.c-pull__text::before {
    content: '«';
    color: var(--accent);
    font-weight: 500;
    margin-right: 0.1em;
}

.c-pull__text::after {
    content: '»';
    color: var(--accent);
    font-weight: 500;
    margin-left: 0.1em;
}

.c-pull__text em {
    font-style: italic;
    color: var(--accent);
    font-weight: 600;
    background-image: linear-gradient(to right, var(--accent), var(--accent));
    background-size: 100% 1.5px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    padding-bottom: 3px;
}

/* Точечная навигация */
.c-pull__dots {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-top: 2.5rem;
}

.c-pull__dot {
    width: 28px;
    height: 2px;
    border: none;
    padding: 0;
    background: rgba(244, 241, 234, 0.25);
    cursor: pointer;
    transition: background 0.3s ease, width 0.3s ease;
}

.c-pull__dot:hover {
    background: rgba(244, 241, 234, 0.6);
}

.c-pull__dot.is-active {
    background: var(--accent);
    width: 48px;
}

/* ============================================
   Клиенты — сетка с крупными названиями
   ============================================ */

.c-clients {
    padding: 1.5rem 0 5rem;
}

.c-clients__list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 1.5rem;
    border-top: 1px solid var(--rule-strong);
    border-left: 1px solid var(--rule-strong);
}

.c-clients__list li {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1rem, 1.4vw, 1.2rem);
    color: var(--ink);
    padding: 1.5rem 1rem;
    text-align: center;
    border-right: 1px solid var(--rule-strong);
    border-bottom: 1px solid var(--rule-strong);
    transition: all 0.3s ease;
    cursor: default;
    letter-spacing: 0.01em;
}

.c-clients__list li:hover {
    color: var(--paper);
    background: var(--ink);
}

/* ============================================
   Контакт + форма
   ============================================ */

.c-contact {
    padding: 1.5rem 0 4rem;
}

.c-contact__lede {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
    color: var(--ink-soft);
    margin-bottom: 2.2rem;
    max-width: 42em;
}

.c-form {
    max-width: 720px;
}

.c-form__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem 2rem;
    margin-bottom: 1.8rem;
}

.c-form__field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.c-form__field--full {
    grid-column: 1 / -1;
}

.c-form__field span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(17, 17, 17, 0.55);
}

.c-form__field input,
.c-form__field textarea {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    color: var(--ink);
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(17, 17, 17, 0.25);
    padding: 0.5em 0;
    outline: none;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.c-form__field input:focus,
.c-form__field textarea:focus {
    border-bottom-color: var(--ink);
}

.c-form__field textarea {
    min-height: 80px;
    line-height: 1.5;
}

.c-form__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.c-form__check {
    display: flex;
    align-items: center;
    gap: 0.7em;
    cursor: pointer;
    font-family: var(--font-serif);
    font-size: 0.92rem;
    color: rgba(17, 17, 17, 0.75);
    line-height: 1.3;
}

.c-form__check input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.c-form__check-box {
    width: 16px;
    height: 16px;
    border: 1px solid rgba(17, 17, 17, 0.4);
    flex-shrink: 0;
    position: relative;
    transition: all 0.2s ease;
}

.c-form__check input:checked + .c-form__check-box {
    background: var(--ink);
    border-color: var(--ink);
}

.c-form__check input:checked + .c-form__check-box::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 0px;
    width: 5px;
    height: 10px;
    border: solid var(--paper);
    border-width: 0 1.5px 1.5px 0;
    transform: rotate(45deg);
}

.c-form__check-text a {
    border-bottom: 1px solid currentColor;
    padding-bottom: 1px;
}

.c-form__submit {
    display: inline-flex;
    align-items: center;
    gap: 0.7em;
    padding: 0.85em 1.6em;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: background 0.4s var(--ease-soft);
}

.c-form__submit svg { transition: transform 0.4s var(--ease-soft); }
.c-form__submit:hover:not(:disabled) { background: var(--accent); }
.c-form__submit:hover:not(:disabled) svg { transform: translateX(4px); }
.c-form__submit:disabled { opacity: 0.4; cursor: not-allowed; }

.c-form__status {
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    color: var(--accent);
    min-height: 1.2em;
}

.c-form__status.is-success { color: #2d7a3e; }

/* ============================================
   Футер — одна строка
   ============================================ */

.c-foot {
    padding: 1.8rem 0 0;
}

.c-foot__line {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(17, 17, 17, 0.55);
}

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

.c-foot__line a {
    border-bottom: 1px solid rgba(17, 17, 17, 0.2);
    padding-bottom: 1px;
    transition: border-color 0.3s ease, color 0.3s ease;
}

.c-foot__line a:hover {
    color: var(--ink);
    border-bottom-color: var(--ink);
}

/* ============================================
   Адаптив
   ============================================ */

@media (max-width: 860px) {
    .c-services__grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 640px) {
    .c-frame {
        padding: 1.6rem 1.2rem;
    }

    .c-head {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .c-nav { flex-wrap: wrap; gap: 1rem; }

    .c-sec-head {
        gap: 0.8rem;
        padding-top: 2rem;
        margin-bottom: 2rem;
    }

    .c-sec-num {
        font-size: 2rem;
        min-width: 1.8ch;
    }

    .c-clients__list {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Длинные имена (Universal Acoustics, Light Sound News) — сжимаем,
       чтобы строка не выламывалась в две высоты */
    .c-clients__list li {
        font-size: 0.9rem;
        padding: 0.9em 0.5em;
        text-align: center;
    }

    .c-form__grid {
        grid-template-columns: 1fr;
    }

    .c-form__bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .c-foot__line { font-size: 0.65rem; }
}