/* Обёртка страницы */
.topic-list-page {
    padding: var(--spacing-xl) 0;
    display: flex;
    flex-direction: column;
    /* gap: var(--spacing-lg); */
}

/* Заголовок */
.topic-list-page h1 {
    font-family: var(--font-title);
    font-size: var(--font-size-uuxl);
    color: var(--color-black);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    line-height: 0.9;
}

/* Поиск */
.search-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    width: 100%;
    max-width: 500px;
}

#search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 40px;
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    border-radius: var(--border_radius_small);
    border: 2px solid var(--border-color-purple);
    background: var(--color-bg);
    transition: border-color var(--transition-speed) var(--transition-func);
}

#search-input:focus {
    border-color: var(--color-accent-hover);
    outline: none;
}

/* Кнопка очистки */
#clear-button {
    color: var(--color-black);
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-accent);
    border: 2px solid var(--border-color-purple);
    border-radius: var(--border_radius_small);
    font-family: var(--font-pixel);
    padding: 2px 8px;
    cursor: pointer;
    display: none;
    transition: background var(--transition-speed) var(--transition-func);
}

#clear-button:hover {
    background: var(--color-accent-hover);
}

/* Список тем */
#topics-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 800px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

/* Карточка темы */
#topics-list li a {
    display: block;
    padding: var(--spacing-md);
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    color: var(--color-black);
    text-decoration: none;
    border-radius: var(--border_radius);
    background: linear-gradient(var(--color-bg), var(--color-bg)) padding-box,
        linear-gradient(180deg, var(--color-purple) 50%, var(--color-black) 113% 50%) border-box;
    border: 3px solid transparent;
    transition: background var(--transition-speed) var(--transition-func),
                transform var(--transition-speed) var(--transition-func);
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 0.4s forwards;
}

/* Анимация появления
#topics-list li:nth-child(1) a { animation-delay: 0.05s; }
#topics-list li:nth-child(2) a { animation-delay: 0.1s; }
#topics-list li:nth-child(3) a { animation-delay: 0.15s; }
#topics-list li:nth-child(4) a { animation-delay: 0.2s; }
#topics-list li:nth-child(5) a { animation-delay: 0.25s; }
#topics-list li:nth-child(6) a { animation-delay: 0.3s; }
#topics-list li:nth-child(7) a { animation-delay: 0.35s; }
#topics-list li:nth-child(8) a { animation-delay: 0.4s; }
#topics-list li:nth-child(9) a { animation-delay: 0.45s; }
#topics-list li:nth-child(10) a { animation-delay: 0.5s; }
#topics-list li:nth-child(11) a { animation-delay: 0.55s; }
#topics-list li:nth-child(12) a { animation-delay: 0.6s; }
#topics-list li:nth-child(13) a { animation-delay: 0.65s; }
#topics-list li:nth-child(14) a { animation-delay: 0.7s; }
#topics-list li:nth-child(15) a { animation-delay: 0.75s; }
#topics-list li:nth-child(16) a { animation-delay: 0.8s; } */

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hover эффект */
#topics-list li a:hover {
    background: var(--color-purple-hover);
    transform: scale(1.02);
}


@media (max-width: 750px) {
    #topics-list {
        grid-template-columns: 1fr;
    }
    .topic-list-page h1 {
        font-size: var(--font-size-uxl);
    }

}
@media (max-width: 360px) {
    #topics-list li a {
        font-size: var(--font-size-sm);
    }
}