/* ====== Базовые стили ====== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #1d1d1d;
    background-color: #ffffff;
    line-height: 1.5;
}

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

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

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

:root {
    --teal: #008c95;
    --teal-dark: #006a72;
    --teal-light: #e3f5f6;
    --gray-bg: #f5f5f5;
    --gray-border: #e3e3e3;
    --dark: #1d1d1d;
    --white: #ffffff;
}

/* ====== Layout ====== */

.container {
    width: 100%;
    max-width: 1200px;
    padding: 0 20px;
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.section--gray {
    background: var(--gray-bg);
}

.section--teal {
    background: radial-gradient(circle at top left, #00a8b4, var(--teal-dark));
    color: #ffffff;
}

.section--teal-light {
    background: var(--teal-light);
}

.section--dark {
    background: #0f2324;
    color: #ffffff;
}

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

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 41, 42, 0.95);
    backdrop-filter: blur(8px);
    color: #ffffff;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
    color: #ffffff;
}

.logo__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    color: var(--teal);
    border-radius: 14px;
    padding: 0 10px;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 2px;
}

.logo__text {
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 14px;
}

.logo__sub {
    font-size: 11px;
    opacity: 0.8;
}

.logo--small .logo__icon {
    font-size: 12px;
    padding: 0 8px;
}

/* ====== Navigation ====== */

.nav__list {
    display: flex;
    gap: 24px;
    font-size: 14px;
    font-weight: 500;
}

.nav__list a {
    position: relative;
    padding-bottom: 2px;
}

.nav__list a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: #ffffff;
    transition: width 0.2s ease;
}

.nav__list a:hover::after {
    width: 100%;
}

/* ====== Burger ====== */

.burger {
    display: none;
    flex-direction: column;
    gap: 4px;
    width: 24px;
    height: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
}

.burger span {
    display: block;
    height: 2px;
    background: #ffffff;
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.burger--active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.burger--active span:nth-child(2) {
    opacity: 0;
}

.burger--active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

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

.hero {
    position: relative;
    padding: 120px 0 80px;
    background-image: linear-gradient(135deg, #083335, #0f4a4e);
    color: #ffffff;
    overflow: hidden;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(255,255,255,0.12), transparent 60%);
    pointer-events: none;
}

.hero__content {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
    gap: 40px;
    align-items: center;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 16px;
}

.hero__subtitle {
    font-size: 16px;
    max-width: 520px;
    opacity: 0.9;
}

.hero__actions {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero__labels {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
}

.hero__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 999px;
}

.hero__right {
    display: grid;
    gap: 16px;
}

.hero__card {
    background: rgba(9, 50, 52, 0.9);
    border-radius: 18px;
    padding: 18px 18px 18px 20px;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
}

.hero__card i {
    font-size: 26px;
    margin-bottom: 8px;
}

.hero__card h3 {
    margin: 0 0 6px;
    font-size: 16px;
}

/* ====== Buttons ====== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
}

.btn i {
    font-size: 14px;
}

.btn--primary {
    background: #ffffff;
    color: var(--teal-dark);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 26px rgba(0, 0, 0, 0.3);
}

.btn--ghost {
    border-color: #ffffff;
    color: #ffffff;
    background: transparent;
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn--full {
    width: 100%;
}

/* ====== Sections common ====== */

.section__header {
    max-width: 720px;
    margin: 0 auto 36px;
    text-align: left;
}

.section__header--light {
    color: #ffffff;
}

.section__header h2 {
    margin: 8px 0 12px;
    font-size: 28px;
}

.section__header p {
    margin: 0;
    font-size: 15px;
    opacity: 0.9;
}

.section__tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--teal-light);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--teal-dark);
}

.section__tag--light {
    background: rgba(255,255,255,0.14);
    color: #ffffff;
}

/* ====== Grids & cards ====== */

.grid {
    display: grid;
    gap: 20px;
}

.grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px 18px;
    border: 1px solid var(--gray-border);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.04);
}

.card h3 {
    margin: 8px 0 8px;
    font-size: 16px;
}

.card p {
    margin: 0;
    font-size: 14px;
    color: #555;
}

.card i {
    font-size: 20px;
    color: var(--teal);
}

.card--service ul {
    margin-top: 10px;
    font-size: 14px;
    color: #555;
}

.card--service ul li + li {
    margin-top: 5px;
}

.card--reason {
    background: #ffffff;
}

.card--transparent {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
}

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

.about__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.about__item {
    background: #ffffff;
    border-radius: 16px;
    padding: 18px 16px;
    border: 1px solid var(--gray-border);
}

.about__item i {
    font-size: 22px;
    color: var(--teal);
}

/* ====== Numbers ====== */

.numbers__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.numbers__item {
    padding: 16px 10px;
    border-radius: 16px;
    background: rgba(0,0,0,0.18);
    text-align: center;
}

.numbers__value {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 4px;
}

.numbers__label {
    font-size: 13px;
    opacity: 0.85;
}

/* ====== Suppliers ====== */

.suppliers__grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.suppliers__item {
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px dashed var(--teal);
    font-size: 13px;
    background: #ffffff;
}

/* ====== Social ====== */

.social__inner {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 30px;
    align-items: center;
}

.social__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top, var(--teal), var(--teal-dark));
    border-radius: 50%;
    width: 220px;
    height: 220px;
    margin: 0 auto;
    color: #ffffff;
}

.social__icon i {
    font-size: 80px;
}

/* ====== Principles ====== */

.principles__inner {
    display: flex;
    flex-direction: column;
    gap: 26px;
}

.principles__icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
}

.principles__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 190px;
    height: 190px;
    border-radius: 30px;
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    color: #ffffff;
    box-shadow: 0 14px 30px rgba(0,0,0,0.18);
}

.principles__icon i {
    font-size: 60px;
}

.list-check {
    font-size: 14px;
}

.list-check li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 10px;
}

.list-check li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 3px;
    font-size: 13px;
    color: var(--teal);
}

/* ====== Contacts ====== */

.contacts__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 36px;
}

.contacts__info a {
    text-decoration: underline;
}

.contacts__block {
    margin-top: 16px;
    font-size: 14px;
}

.contacts__block--inline {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.contacts__block h3 {
    margin: 0 0 6px;
    font-size: 15px;
}

.contacts__social {
    margin-top: 18px;
    display: flex;
    gap: 10px;
}

.contacts__social a {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.4);
    transition: background 0.2s ease;
}

.contacts__social a:hover {
    background: rgba(255,255,255,0.16);
}

.form {
    background: #ffffff;
    border-radius: 18px;
    padding: 24px 20px;
    color: #1d1d1d;
}

.form h3 {
    margin-top: 0;
    margin-bottom: 12px;
}

.form__group {
    margin-bottom: 12px;
}

.form__group label {
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
}

.form__group input,
.form__group textarea {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--gray-border);
    padding: 8px 10px;
    font-size: 14px;
    font-family: inherit;
}

.form__group input:focus,
.form__group textarea:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 2px rgba(0, 140, 149, 0.15);
}

.form__note {
    margin-top: 8px;
    font-size: 11px;
    color: #777;
}

.form__status {
    margin-top: 10px;
    font-size: 13px;
    min-height: 18px;
}

.form__status--success {
    color: #198754;
}

.form__status--error {
    color: #ffb3b3;
}

/* ====== Footer ====== */

.footer {
    padding: 18px 0;
    background: #071415;
    color: #ffffff;
    font-size: 12px;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.footer__left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer__right {
    opacity: 0.8;
}

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

@media (max-width: 992px) {
    .hero__content {
        grid-template-columns: 1fr;
    }

    .grid--4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid--3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .numbers__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 768px) {
    .header__inner {
        height: 60px;
    }

    .nav {
        position: fixed;
        inset: 60px 0 auto;
        background: rgba(5, 32, 33, 0.98);
        transform: translateY(-100%);
        transition: transform 0.2s ease;
    }

    .nav--open {
        transform: translateY(0);
    }

    .nav__list {
        flex-direction: column;
        padding: 12px 20px 16px;
        gap: 10px;
    }

    .burger {
        display: flex;
    }

    .hero {
        padding-top: 110px;
    }

    .hero__labels {
        gap: 8px;
    }

    .section {
        padding: 60px 0;
    }

    .grid--4,
    .grid--3,
    .grid--2,
    .about__grid,
    .numbers__grid {
        grid-template-columns: 1fr;
    }

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

    .section__header h2 {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 26px;
    }

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

    .contacts__block--inline {
        flex-direction: column;
    }
}