/* Основные стили */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

.row {
    margin-bottom: 30px;
}

/* Шапка сайта */
.tvoje_sance_header {
    background-color: #1428a0; /* Samsung blue */
    padding: 20px 0;
}

.logo {
    max-width: 300px;
    margin: 0 auto;
}

/* Навигация */
#main__navigation {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border: none;
}

.navbar-nav {
    float: none;
    text-align: center;
}

.navbar-nav li {
    float: none;
    display: inline-block;
}

.navbar-nav li a {
    color: #333;
    font-weight: 600;
    text-transform: uppercase;
    padding: 15px 20px;
    transition: color 0.3s;
}

.navbar-nav li a:hover {
    color: #1428a0;
}

.navbar-nav .active a {
    color: #1428a0;
    background-color: transparent;
}
.col-sm-12 {
    text-align: center;
}
/* Типографика */
.title {
    font-size: 32px;
    font-weight: 700;
    color: #1428a0;
    text-align: center;
    margin-bottom: 30px;
    text-transform: uppercase;
}

.subtitle {
    font-size: 24px;
    font-weight: 600;
    color: #1428a0;
    margin-bottom: 20px;
}

.descr {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.name {
    font-size: 18px;
    font-weight: 600;
    color: #1428a0;
    margin: 10px 0 5px;
}

.city {
    font-size: 14px;
    color: #777;
    margin-bottom: 15px;
}

.name_link {
    color: #1428a0;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    margin: 10px 0;
}

.name_link:hover {
    text-decoration: underline;
}

.tel {
    font-size: 16px;
    color: #555;
    margin: 10px 0;
}

/* Секции */
.tvoje_sance_o_projektu,
.tvoje_sance_cil_projektu,
.tvoje_sance_napln_projektu,
.tvoje_sance_how_to_login,
.tvoje_sance_novinky,
.tvoje_sance_ucastnici,
.tvoje_sance_kontakty {
    padding: 60px 0;
    background-color: #fff;
}

.tvoje_sance_o_projektu {
    background-color: #f5f5f5;
}

.tvoje_sance_novinky {
    background-color: #f5f5f5;
    text-align: center;
}

.tvoje_sance_novinky img {
    margin: 0 10px;
    transition: opacity 0.3s;
}

.tvoje_sance_novinky img:hover {
    opacity: 0.8;
}

/* Гибкий контейнер для целей проекта */
.flex_container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.flex_container .item {
    flex: 0 0 48%;
    margin-bottom: 30px;
}

/* Участники проекта */
.flex_box {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.flex_box .item {
    flex: 0 0 30%;
    margin: 15px;
    text-align: center;
    position: relative;
}

.flex_box .item a {
    display: block;
    position: relative;
    height: 200px;
    background-color: #f5f5f5;
    margin-bottom: 15px;
    overflow: hidden;
}

.mouseover_state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(20, 40, 160, 0.9);
    color: white;
    padding: 10px 20px;
    opacity: 0;
    transition: opacity 0.3s;
}

.flex_box .item a:hover .mouseover_state {
    opacity: 1;
}

/* Кнопки */
.bt_basic {
    display: inline-block;
    background-color: #1428a0;
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    margin-top: 20px;
    transition: background-color 0.3s;
}

.bt_basic:hover {
    background-color: #0d1c6b;
    color: white;
}

.bt__back {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #1428a0;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.bt__back:hover {
    background-color: #0d1c6b;
    color: white;
}

/* Футер */
.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
}

.footer .descr {
    color: #ccc;
    margin-bottom: 10px;
}

.footer .descr a {
    color: #ccc;
    text-decoration: none;
}

.footer .descr a:hover {
    color: #fff;
    text-decoration: underline;
}

.footer__copyright {
    margin-top: 30px;
    font-size: 14px;
    color: #999;
    text-align: center;
}

/* Адаптивность */
@media (max-width: 768px) {
    .flex_container .item,
    .flex_box .item {
        flex: 0 0 100%;
    }
    
    .title {
        font-size: 26px;
    }
    
    .subtitle {
        font-size: 20px;
    }
    
    .navbar-nav li {
        display: block;
    }
}

/* Форма */
.tvoje_sance__frm form {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 8px;
}

.tvoje_sance__frm input[type="text"],
.tvoje_sance__frm input[type="email"],
.tvoje_sance__frm textarea {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.tvoje_sance__frm textarea {
    height: 150px;
    resize: vertical;
}

.tvoje_sance__frm input[type="checkbox"] {
    margin-right: 10px;
}

.wrong {
    color: #d9534f;
    font-weight: 600;
}

.correct {
    color: #5cb85c;
    font-weight: 600;
}

#errorMessage {
    margin: 15px 0;
    padding: 10px;
    border-radius: 4px;
}