/* =====================================================
   ОЭК — Основные стили
   Цвета: #01698d | #fafafa | #ef5207
   ===================================================== */

/* ===== ПЕРЕМЕННЫЕ ===== */
:root {
    --color-primary:       #01698d;
    --color-primary-dark:  #015a7a;
    --color-primary-light: #017da8;
    --color-accent:        #ef5207;
    --color-accent-hover:  #d44606;
    --color-bg:            #fafafa;
    --color-white:         #ffffff;
    --color-text-dark:     #1a1a1a;
    --color-text-mid:      #4a4a4a;
    --color-text-light:    #888888;
    --color-border:        #d8d8d8;
    --font-main:           'Inter', Arial, sans-serif;
    --container-width:     1200px;
    --container-padding:   24px;
    --radius-sm:           2px;
    --transition:          0.2s ease;
    --shadow-card:         0 2px 16px rgba(1,105,141,0.10);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
main { flex: 1; }

/* ===== КОНТЕЙНЕР ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===== TOP BAR ===== */
.topbar {
    background: #1a1a1a;
    padding: 10px 0;
}
.topbar__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topbar__left {
    display: flex;
    align-items: center;
    gap: 20px;
}
.topbar__phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    /* сброс стилей <button> */
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-main);
    /* внешний вид */
    color: #ffffff;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.3px;
    transition: color var(--transition);
}
.topbar__phone svg { fill: var(--color-accent); flex-shrink: 0; }
.topbar__phone:hover { color: var(--color-accent); }
.topbar__callback {
    color: #cccccc;
    font-size: 15px;
    font-weight: 500;
    border-bottom: 1px dashed #666;
    transition: color var(--transition), border-color var(--transition);
}
.topbar__callback:hover { color: #ffffff; border-color: #aaa; }
.topbar__login {
    display: flex;
    align-items: center;
    gap: 7px;
    color: #cccccc;
    font-size: 15px;
    font-weight: 500;
    transition: color var(--transition);
}
.topbar__login svg { fill: #aaa; transition: fill var(--transition); }
.topbar__login:hover { color: #ffffff; }
.topbar__login:hover svg { fill: #ffffff; }

/* ===== FOOTER ===== */
.site-footer {
    background: #141414;
    color: #888;
    margin-top: auto;
}
.site-footer__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}
.site-footer__top {
    display: grid;
    grid-template-columns: 280px 1fr 1fr;
    gap: 48px;
    padding: 48px 0 36px;
    border-bottom: 1px solid #2a2a2a;
}
.site-footer__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.site-footer__logo span {
    font-size: 20px;
    font-weight: 700;
    color: #fafafa;
}
.site-footer__company-name {
    font-size: 12px;
    color: #555;
    line-height: 1.5;
    max-width: 200px;
}
.site-footer__col-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #fafafa;
    margin-bottom: 16px;
}
.site-footer__contacts {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.site-footer__phone {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: #fafafa;
    transition: color var(--transition);
}
.site-footer__phone:hover { color: var(--color-accent); }
.site-footer__phone-note {
    display: block;
    font-size: 11px;
    color: #555;
    margin-top: 2px;
}
.site-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
    gap: 16px;
    flex-wrap: wrap;
}
.site-footer__copy { font-size: 12px; color: #444; }
.site-footer__bottom-links { display: flex; gap: 20px; }
.site-footer__bottom-link {
    font-size: 12px;
    color: #555;
    transition: color var(--transition);
}
.site-footer__bottom-link:hover { color: #aaa; }

/* ===== PAGE HERO (шапка страницы) ===== */
.page-hero {
    background-color: var(--color-primary);
    padding: 48px 24px 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(255,255,255,0.03) 0px,
        rgba(255,255,255,0.03) 1px,
        transparent 1px,
        transparent 14px
    );
    pointer-events: none;
}
.page-hero__title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-white);
    position: relative;
    z-index: 1;
    margin-bottom: 12px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    position: relative;
    z-index: 1;
}
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color var(--transition); }
.breadcrumb a:hover { color: rgba(255,255,255,0.95); }
.breadcrumb__sep { opacity: 0.45; }

/* ===== PAGE CONTENT (основной фон) ===== */
.page-content-bg {
    background-color: var(--color-primary);
    flex: 1;
    padding-bottom: 80px;
}
.page-content-bg--light {
    background-color: var(--color-bg);
    padding-bottom: 80px;
}

/* ===== КНОПКИ ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 26px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-main);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition), box-shadow var(--transition), transform 0.1s;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--accent {
    background: var(--color-accent);
    color: #fff;
}
.btn--accent:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 4px 14px rgba(239,82,7,0.35);
}
.btn--primary {
    background: var(--color-primary);
    color: #fff;
}
.btn--primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 4px 14px rgba(1,105,141,0.35);
}
.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ===== АДАПТИВ ===== */
.site-footer__nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.site-footer__nav-link {
    font-size: 13px;
    color: #666;
    transition: color var(--transition);
}
.site-footer__nav-link:hover { color: #aaa; }
.site-footer__nav-link--active { color: #aaa; }
.site-footer__callback-link {
    font-size: 13px;
    color: var(--color-accent);
    border-bottom: 1px dashed rgba(239,82,7,0.4);
    transition: color var(--transition), border-color var(--transition);
}
.site-footer__callback-link:hover {
    color: #ff6a1a;
    border-color: rgba(239,82,7,0.7);
}

/* ===== АДАПТИВ ===== */
@media (max-width: 1024px) {
    .site-footer__top { grid-template-columns: 1fr 1fr; }
    .site-footer__col--logo { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
    .page-hero__title { font-size: 26px; }
    .page-hero { padding: 32px 16px 40px; }
    .site-footer__top { grid-template-columns: 1fr; gap: 28px; }
    .topbar__callback { display: none; }
}
@media (max-width: 480px) {
    .topbar__login span { display: none; }
    .site-footer__bottom { flex-direction: column; text-align: center; }
}