:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-main: #ffffff;
    --text-sec: #b3b3b3;
    --accent: #ff4757;
    --border: #333333;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
}

.tabs button {
    background: none;
    border: none;
    color: var(--text-sec);
    font-size: 1rem;
    margin-left: 15px;
    cursor: pointer;
    padding: 5px 10px;
}

.tabs button.active {
    color: var(--text-main);
    border-bottom: 2px solid var(--accent);
}

main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.filters {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

select, button {
    background-color: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
}

button {
    cursor: pointer;
    background-color: var(--accent);
    color: white;
    border: none;
    font-weight: bold;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    transition: transform 0.2s;
}

.card:active {
    transform: scale(0.98);
}

.card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background-color: #2a2a2a;
}

.card-content {
    padding: 15px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 8px;
    text-transform: uppercase;
    font-weight: bold;
}

.card-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
    flex-grow: 1;
}

.card-date {
    font-size: 0.8rem;
    color: var(--text-sec);
    text-align: right;
}

.list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feed-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--card-bg);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.feed-info strong {
    display: block;
}

.feed-info span {
    font-size: 0.8rem;
    color: var(--text-sec);
}

.feed-controls button {
    margin-left: 10px;
    padding: 8px 12px;
}

.btn-toggle.active {
    background-color: #2e7d32;
}

.btn-toggle.inactive {
    background-color: #555;
}

.btn-delete {
    background-color: #c62828;
}

.prefs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.modal-content input {
    width: 100%;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

#loading {
    text-align: center;
    padding: 40px;
    color: var(--text-sec);
}

@media (max-width: 600px) {
    .grid {
        grid-template-columns: 1fr;
    }
}