/* ===== Страница тезисов (Tezis) ===== */
.tezis-section {
    padding: 70px 0;
}

.tezis-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.tezis-card-header {
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    padding: 35px 40px;
    text-align: center;
}

.tezis-card-header h1 {
    color: #fff;
    font-weight: 700;
    margin: 0;
    font-size: 28px;
    line-height: 1.3;
}

.tezis-card-body {
    padding: 40px;
    color: #4a4a4a;
    font-size: 16px;
    line-height: 1.9;
}

/* Аккуратный вид нумерованных правил из summernote */
.tezis-card-body p,
.tezis-card-body li {
    margin-bottom: 14px;
}

.tezis-card-body a {
    color: #00bcd4;
    word-break: break-word;
}

.tezis-card-body a:hover {
    text-decoration: underline;
}

/* Блок загрузки документа */
.tezis-download {
    margin-top: 35px;
    padding-top: 30px;
    border-top: 1px dashed #e0e0e0;
    text-align: center;
}

.tezis-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #00bcd4 0%, #0097a7 100%);
    color: #fff;
    padding: 14px 34px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 6px 18px rgba(0, 188, 212, 0.35);
}

.tezis-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 188, 212, 0.45);
    color: #fff;
    text-decoration: none;
}

.tezis-download-btn i {
    font-size: 18px;
}

/* Кнопка отправки */
button.tezis-download-btn {
    border: none;
    cursor: pointer;
}

/* Поля формы отправки тезиса */
.tezis-form {
    margin-top: 10px;
}

.tezis-field {
    margin-bottom: 22px;
}

.tezis-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.tezis-field .form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #dcdcdc;
    border-radius: 10px;
    font-size: 15px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tezis-field .form-control:focus {
    outline: none;
    border-color: #00bcd4;
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.15);
}

.tezis-field input[type="file"].form-control {
    padding: 9px 12px;
    background: #fafafa;
}

.tezis-error {
    margin-top: 6px;
    color: #dc3545;
    font-size: 13px;
}

.tezis-download-hint {
    margin-top: 12px;
    font-size: 13px;
    color: #9e9e9e;
}

@media (max-width: 575px) {
    .tezis-card-header,
    .tezis-card-body {
        padding: 25px 20px;
    }
    .tezis-card-header h1 {
        font-size: 22px;
    }
}