/* =========================================================
   ОСНОВНЫЕ ЦВЕТА
   ========================================================= */

:root {
    --red: #920000;
    --red-dark: #780000;
    --gold: #c5a04a;

    --cream: #f6efe1;
    --cream-light: #fffaf0;

    --text: #29231e;
    --line: #920000;
}


/* =========================================================
   ОБЩИЕ НАСТРОЙКИ
   ========================================================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;

    background:
      
        url("foto/sob/bg.png") center center / cover fixed no-repeat;

    color: var(--text);

        font-family: Merriweather, serif;
}


/* =========================================================
   ВЕРХНЕЕ МЕНЮ
   ========================================================= */

.site-header {
    position: relative;

    width: 100%;
    height: 58px;

    display: flex;
    align-items: center;

    background: #920000;

    z-index: 1000;
}


/* кнопка меню */

.menu-button {
    width: 45px;

    margin-left: 4px;

    color: var(--gold);

    font-size: 22px;

    text-align: center;
}


/* меню */

.top-menu {
    flex: 1;

    display: flex;
    justify-content: center;
    align-items: stretch;

    height: 100%;
}

.top-menu a {
    position: relative;

    display: flex;
    align-items: center;
    justify-content: center;

    min-width: 150px;

    padding: 0 25px;

    color: var(--gold);

    font-size: 14px;
    font-weight: bold;

    text-align: center;
    text-transform: uppercase;

    text-decoration: none;

    line-height: 1.2;

    transition:
        color 0.3s ease,
        background 0.3s ease;
}


/* вертикальные разделители */

.top-menu a:not(:last-child)::after {
    content: "";

    position: absolute;

    right: 0;
    top: 12px;

    width: 2px;
    height: 34px;

    background: rgba(197, 160, 74, 0.55);
}


.top-menu a:hover,
.top-menu a.active {
    color: #ffffff;
}


/* =========================================================
   ОСНОВНОЙ БЛОК
   ========================================================= */

.chronology-section {
    position: relative;

    width: 100%;

    min-height: 100vh;

    padding:
        70px
        5%
        120px;

    overflow: hidden;
}


/* =========================================================
   ЗАГОЛОВОК
   ========================================================= */

.chronology-header {
    position: relative;

    width: 100%;

    display: flex;

    flex-direction: column;

    align-items: center;

    margin: 0 auto 70px;

    text-align: center;

    z-index: 20;
}


.chronology-header h1 {
    margin: 0;

    color: var(--red);

        font-family: Merriweather, serif;

    font-size: 43px;

    font-weight: 600;

    letter-spacing: 1px;

    text-transform: uppercase;

    line-height: 1.2;
}


/* золотая линия */

.chronology-header h1::after {
    content: "";

    display: block;

    width: 90px;
    height: 3px;

    margin: 18px auto 0;

    background: var(--gold);
}


/* =========================================================
   ГОРИЗОНТАЛЬНАЯ ШКАЛА
   ========================================================= */

.timeline5 {
    position: relative;

    width: min(1150px, 90%);

    min-height: 68px;

    display: flex;

    align-items: stretch;

    margin-top: 42px;

    background: var(--red);

    box-shadow:
        0 8px 22px rgba(70, 20, 10, 0.14);
}


/* небольшие декоративные края */

.timeline5::before,
.timeline5::after {
    content: "";

    position: absolute;

    top: 0;

    width: 5px;
    height: 100%;

    background: var(--gold);
}

.timeline5::before {
    left: 0;
}

.timeline5::after {
    right: 0;
}


/* =========================================================
   ГОДА В ШКАЛЕ
   ========================================================= */

.timeline5 a {
    position: relative;

    flex: 1;

    display: flex;

    align-items: center;
    justify-content: center;

    min-width: 0;

    padding: 0 10px;

    color: var(--cream-light);

      font-family: Merriweather, serif;

    font-size: 17px;

    text-decoration: none;

    transition:
        color 0.3s ease,
        background 0.3s ease;
}


/* разделители */

.timeline5 a:not(:last-child)::before {
    content: "";

    position: absolute;

    top: 20px;
    right: 0;

    width: 1px;
    height: 28px;

    background:
        rgba(246, 239, 225, 0.38);
}


/* золотая линия */

.timeline5 a::after {
    content: "";

    position: absolute;

    left: 50%;
    bottom: 10px;

    width: 0;
    height: 2px;

    transform: translateX(-50%);

    background: var(--gold);

    transition:
        width 0.3s ease;
}


/* наведение */

.timeline5 a:hover {
    background:
        rgba(255, 255, 255, 0.06);

    color: #ffffff;
}

.timeline5 a:hover::after {
    width: 30px;
}


/* =========================================================
   ВРЕМЕННАЯ ЛИНИЯ
   ========================================================= */

.chronology {
    position: relative;

    width: min(1350px, 100%);

    margin: 0 auto;

    padding:
        30px 0
        50px;
}


/* центральная линия */

.chronology::before {
    content: "";

    position: absolute;

    top: 0;
    bottom: 0;

    left: 50%;

    width: 3px;

    transform: translateX(-50%);

    background: var(--red);

    z-index: 1;
}


/* =========================================================
   ОДНО СОБЫТИЕ
   ========================================================= */

.chronology-item {
    position: relative;

    display: grid;

    grid-template-columns:
        minmax(0, 1fr)
        70px
        minmax(0, 1fr);

    align-items: center;

    width: 100%;

    margin-bottom: 90px;

    scroll-margin-top: 100px;

    z-index: 2;

    /* Анимация появления */
    opacity: 0;
    transform: translateY(70px);

    transition:
        opacity 0.8s ease,
        transform 0.8s ease;
}

/* Элемент после появления в области экрана */
.chronology-item.show {
    opacity: 1;
    transform: translateY(0);
}

.chronology-item a {
    text-decoration: none;
}

/* =========================================================
   ГОД
   ========================================================= */

.chronology-date {
    padding: 0 45px;

     font-family: Merriweather, serif;
}


.chronology-date span {
    display: inline-block;

    color: var(--red);

    font-size: 40px;

    font-weight: bold;

    line-height: 1;

    transition:
        color 0.3s ease,
        transform 0.3s ease;
}


/* =========================================================
   ЦЕНТРАЛЬНАЯ ТОЧКА
   ========================================================= */

.chronology-dot {
    position: relative;

    width: 19px;
    height: 19px;

    margin: 0 auto;

    background: var(--cream);

    border:
        4px solid
        var(--red);

    border-radius: 50%;

    z-index: 5;
}


.chronology-dot::after {
    content: "";

    position: absolute;

    left: 50%;
    top: 50%;

    width: 5px;
    height: 5px;

    transform: translate(-50%, -50%);

    background: var(--gold);

    border-radius: 50%;
}


/* =========================================================
   КАРТОЧКА
   ========================================================= */

.chronology-card {
    position: relative;

    margin: 0 45px;

    padding:
        27px
        32px;

    background:
        rgba(255, 250, 240, 0.92);

    border:
        1px solid
        rgba(146, 0, 0, 0.17);

    box-shadow:
        0 8px 25px
        rgba(80, 40, 10, 0.08);

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}


/* бордовая полоса */

.chronology-card::after {
    content: "";

    position: absolute;

    top: 0;
    bottom: 0;

    width: 5px;

    background: var(--red);
}


/* золотая маленькая полоска */

.chronology-card::before {
    content: "";

    position: absolute;

    top: 0;

    width: 60px;
    height: 3px;

    background: var(--gold);

    transition:
        width 0.3s ease;
}


/* текст */

.chronology-card p {
    margin: 0;

    color: var(--text);

        font-family: Merriweather, serif;

    font-size: 17px;

    line-height: 1.6;
}


/* =========================================================
   НЕЧЁТНЫЕ СОБЫТИЯ
   ГОД СЛЕВА / ТЕКСТ СПРАВА
   ========================================================= */

.chronology-item:nth-child(odd)
.chronology-date {
    grid-column: 1;
    grid-row: 1;

    text-align: right;
}


.chronology-item:nth-child(odd)
.chronology-dot {
    grid-column: 2;
    grid-row: 1;
}


.chronology-item:nth-child(odd)
.chronology-card {
    grid-column: 3;
    grid-row: 1;

    border-left: none;
}


.chronology-item:nth-child(odd)
.chronology-card::after {
    left: 0;
}


.chronology-item:nth-child(odd)
.chronology-card::before {
    left: 25px;
}


/* =========================================================
   ЧЁТНЫЕ СОБЫТИЯ
   ТЕКСТ СЛЕВА / ГОД СПРАВА
   ========================================================= */

.chronology-item:nth-child(even)
.chronology-date {
    grid-column: 3;
    grid-row: 1;

    text-align: left;
}


.chronology-item:nth-child(even)
.chronology-dot {
    grid-column: 2;
    grid-row: 1;
}


.chronology-item:nth-child(even)
.chronology-card {
    grid-column: 1;
    grid-row: 1;

    border-right: none;
}


.chronology-item:nth-child(even)
.chronology-card::after {
    right: 0;
}


.chronology-item:nth-child(even)
.chronology-card::before {
    right: 25px;
}


.chronology-item:nth-child(even)
.chronology-card p {
    text-align: right;
}


/* =========================================================
   НАВЕДЕНИЕ НА СОБЫТИЕ
   ========================================================= */

.chronology-card:hover {
    transform: translateY(-5px);

    box-shadow:
        0 15px 35px
        rgba(80, 30, 10, 0.14);
}


.chronology-card:hover::before {
    width: 90px;
}


.chronology-item:hover
.chronology-date span {
    color: var(--gold);

    transform: scale(1.04);
}


.chronology-item:hover
.chronology-dot {
    background: var(--red);

    box-shadow:
        0 0 0 6px
        rgba(146, 0, 0, 0.08);
}


.chronology-item:hover
.chronology-dot::after {
    background: var(--cream);
}


/* =========================================================
   ДЕКОР ФОНА
   ========================================================= */

.chronology-section::before {
    content: "❧";

    position: absolute;

    left: 25px;
    top: 250px;

    color:
        rgba(146, 0, 0, 0.035);

    font-size: 150px;

    transform: rotate(-20deg);

    pointer-events: none;
}


.chronology-section::after {
    content: "❧";

    position: absolute;

    right: 25px;
    bottom: 150px;

    color:
        rgba(146, 0, 0, 0.035);

    font-size: 150px;

    transform: rotate(160deg);

    pointer-events: none;
}


/* =========================================================
   ФУТЕР
   ========================================================= */

.site-footer {
    width: 100%;

    padding: 25px;

    background: var(--red);

    color: var(--cream);

        font-family: Merriweather, serif;

    font-size: 14px;

    text-align: center;
}


/* =========================================================
   ПЛАНШЕТ
   ========================================================= */

@media (max-width: 1000px) {

    .chronology-section {
        padding:
            60px
            4%
            100px;
    }


    .top-menu a {
        min-width: auto;

        padding:
            0 15px;

        font-size: 12px;
    }


    .chronology-header h1 {
        font-size: 36px;
    }


    .timeline5 {
        width: 96%;
    }


    .timeline5 a {
        font-size: 15px;
    }


    .chronology-item {
        grid-template-columns:
            minmax(0, 1fr)
            55px
            minmax(0, 1fr);
    }


    .chronology-date {
        padding: 0 25px;
    }


    .chronology-date span {
        font-size: 32px;
    }


    .chronology-card {
        margin:
            0 20px;

        padding:
            23px 25px;
    }


    .chronology-card p {
        font-size: 16px;
    }

}


/* =========================================================
   МОБИЛЬНЫЕ
   ========================================================= */

@media (max-width: 700px) {

    .site-header {
        height: 52px;
    }


    .menu-button {
        font-size: 18px;
    }


    .top-menu {
        overflow-x: auto;

        justify-content: flex-start;
    }


    .top-menu a {
        flex: 0 0 auto;

        min-width: auto;

        padding:
            0 12px;

        font-size: 10px;
    }


    .top-menu a:not(:last-child)::after {
        height: 25px;

        top: 14px;
    }


    .chronology-section {
        padding:
            45px
            15px
            80px;
    }


    .chronology-header {
        margin-bottom: 50px;
    }


    .chronology-header h1 {
        font-size: 29px;
    }


    /* -----------------------------------------
       ШКАЛА НА ТЕЛЕФОНЕ
       ----------------------------------------- */

    .timeline5 {
        width: 100%;

        overflow-x: auto;

        justify-content: flex-start;

        scrollbar-width: thin;
    }


    .timeline5 a {
        flex:
            0 0 90px;

        min-height: 60px;

        font-size: 15px;
    }


    /* -----------------------------------------
       ЛИНИЯ СОБЫТИЙ СЛЕВА
       ----------------------------------------- */

    .chronology {
        padding-top: 15px;
    }


    .chronology::before {
        left: 20px;

        width: 3px;

        transform: none;
    }


    .chronology-item,
    .chronology-item:nth-child(even) {
        display: grid;

        grid-template-columns:
            40px
            minmax(0, 1fr);

        align-items: start;

        margin-bottom: 55px;
    }


    /* год */

    .chronology-date,
    .chronology-item:nth-child(even)
    .chronology-date {
        grid-column: 2;
        grid-row: 1;

        padding:
            0
            0
            15px;

        text-align: left;
    }


    .chronology-date span {
        font-size: 29px;
    }


    /* точка */

    .chronology-dot,
    .chronology-item:nth-child(even)
    .chronology-dot {
        grid-column: 1;
        grid-row: 2;

        width: 16px;
        height: 16px;

        margin:
            5px auto 0;
    }


    /* карточка */

    .chronology-card,
    .chronology-item:nth-child(even)
    .chronology-card {
        grid-column: 2;
        grid-row: 2;

        margin: 0;

        padding:
            21px;

        border-left: none;
        border-right: none;
    }


    .chronology-card::after,
    .chronology-item:nth-child(even)
    .chronology-card::after {
        left: 0;
        right: auto;
    }


    .chronology-card::before,
    .chronology-item:nth-child(even)
    .chronology-card::before {
        left: 20px;
        right: auto;
    }


    .chronology-card p,
    .chronology-item:nth-child(even)
    .chronology-card p {
        text-align: left;

        font-size: 15px;

        line-height: 1.55;
    }

}