/* =============================================
   1. ПЕРЕМЕННЫЕ И ТЕМЫ (VARIABLES & THEMES)
   ============================================= */
:root {
    --bg-deep: #f4f5f7;
    --bg-header: rgba(255, 255, 255, 0.95);
    --bg-sidebar: rgba(244, 245, 247, 0.95);
    --bg-card-unread: #ffffff;
    --bg-card-hover: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.5);
    --border-card: rgba(0, 0, 0, 0.06);
    --border-card-hover: rgba(0, 0, 0, 0.12);
    --bg-element: rgba(0, 0, 0, 0.04); 
    --bg-element-hover: rgba(0, 0, 0, 0.08);
    --bg-context: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --text-main: #111111;
    --text-muted: #737373;
    --text-card-title: #333333;
    --text-unread: #000000;
    --accent-orange: #ff6b00;
    --accent-orange-dim: rgba(255, 107, 0, 0.08);
    --accent-orange-border: rgba(255, 107, 0, 0.3);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-base: all 0.3s var(--ease-out);
}

[data-theme="dark"] {
    --bg-deep: #0e0e0e;
    --bg-header: rgba(18, 18, 18, 0.95);
    --bg-sidebar: rgba(14, 14, 14, 0.95);
    --bg-card-unread: #222222;
    --bg-card-hover: #2a2a2a;
    --bg-card: rgba(34, 34, 34, 0.4);
    --border-card: rgba(255, 255, 255, 0.05);
    --border-card-hover: rgba(255, 255, 255, 0.15);
    --bg-element: rgba(255, 255, 255, 0.05);
    --bg-element-hover: rgba(255, 255, 255, 0.1);
    --bg-context: #1e1e1e;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-main: #f0f0f0;
    --text-muted: #888888;
    --text-card-title: #cccccc;
    --text-unread: #ffffff;
}

/* =============================================
   2. БАЗОВЫЕ СТИЛИ (BASE)
   ============================================= */
body { 
    background-color: var(--bg-deep); color: var(--text-main); 
    font-family: 'Inter', sans-serif; margin: 0; height: 100vh; 
    display: flex; flex-direction: column; overflow: hidden; 
    -webkit-font-smoothing: antialiased; transition: background-color 0.4s ease; 
}
::-webkit-scrollbar { height: 6px; width: 6px; }
::-webkit-scrollbar-thumb { background: var(--bg-element-hover); border-radius: 10px; }

/* =============================================
   3. ШАПКА И ПОИСК (HEADER & SEARCH)
   ============================================= */
header { 
    padding: 12px 40px;
    background: var(--bg-header); 
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color); 
    display: flex; align-items: center; justify-content: space-between;
    flex-shrink: 0; z-index: 100; position: sticky; top: 0;
}

.logo-link {
    text-decoration: none !important;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.main-logo-img {
    height: 48px;
    width: auto;
    filter: drop-shadow(0 0 8px rgba(255, 107, 0, 0.15));
    transition: transform 0.3s var(--ease-out);
}
.logo-link:hover .main-logo-img { transform: scale(1.1) rotate(2deg); }

.stats { 
    font-size: 0.65rem;
    color: var(--text-muted); font-weight: 500; font-family: 'JetBrains Mono', monospace;
    text-transform: lowercase; margin-top: 2px;
}
.stats span { color: var(--accent-orange); font-weight: 700; }

.search-container { display: flex; align-items: center; gap: 15px; }
#search-input { 
    background: var(--bg-element); border: 1px solid var(--border-color); 
    color: var(--text-main); padding: 10px 16px; border-radius: 8px; 
    font-size: 0.85rem; width: 250px; transition: var(--transition-base); outline: none; 
}
#search-input:focus { border-color: rgba(255, 107, 0, 0.5); width: 320px; }

/* =============================================
   4. СЕТКА И КАРТОЧКИ (С ЭФФЕКТАМИ)
   ============================================= */
.main-wrapper { display: flex; flex-grow: 1; overflow: hidden; width: 100%; }

#columns-container { display: flex; overflow-x: auto; flex-grow: 1; padding: 25px 40px; gap: 20px; }

.sidebar { 
    width: 280px; flex-shrink: 0; background: var(--bg-sidebar); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; z-index: 5; transition: background-color 0.4s ease; 
}
.sidebar-header { padding: 20px 25px 15px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.sidebar-title { color: var(--accent-orange); font-weight: 800; font-size: 0.9rem; text-transform: lowercase; letter-spacing: 0.5px; }
.sidebar-count { color: var(--text-muted); font-size: 0.8rem; font-family: 'JetBrains Mono', monospace; }

.pinned-list { padding: 20px; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }
.pinned-list::-webkit-scrollbar { display: none; }

.pinned-card { 
    background: var(--bg-element); border: 1px solid transparent; padding: 12px 28px 12px 15px; border-radius: 8px; display: flex; flex-direction: column; gap: 6px; position: relative; transition: var(--transition-base); 
}
.pinned-card:hover { background: var(--bg-element-hover); transform: translateX(4px); border-color: var(--border-color); }
.pinned-source-wrapper { display: flex; align-items: center; margin-bottom: 2px; }
.pinned-source { font-size: 0.65rem; font-weight: 800; color: var(--text-muted); text-transform: uppercase; }
.pinned-title { font-size: 0.85rem; color: var(--text-main); font-weight: 500; line-height: 1.4; }
.pinned-link { text-decoration: none; color: inherit; }

.unpin-btn { position: absolute; top: 10px; right: 12px; color: var(--text-muted); cursor: pointer; font-size: 1.2rem; line-height: 0.5; transition: color 0.2s; opacity: 0; }
.pinned-card:hover .unpin-btn { opacity: 1; }
.unpin-btn:hover { color: var(--accent-orange); }

/* =============================================
   5. ЛЕНТА НОВОСТЕЙ (COLUMNS & CARDS)
   ============================================= */
.column { flex: 0 0 360px; display: flex; flex-direction: column; max-height: 100%; }
.column-header { padding: 0 0 15px 0; font-weight: 600; font-size: 1rem; color: var(--text-muted); text-transform: lowercase; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); margin-bottom: 20px; }
.column-title-wrapper { display: flex; align-items: center; gap: 8px; }
.column-stats { display: flex; align-items: center; gap: 8px; }
.column-count { font-size: 1rem; color: var(--text-muted); }

.source-pin { width: 14px; height: 14px; fill: var(--text-muted); cursor: pointer; transition: var(--transition-base); }
.source-pin:hover { fill: var(--text-main); transform: scale(1.2); }
.source-pin.active { fill: var(--accent-orange); transform: rotate(-45deg) scale(1.1); }

.mark-all-btn, .clear-col-btn { width: 20px; height: 20px; fill: var(--text-muted); cursor: pointer; transition: var(--transition-base); opacity: 0; }
.column-header:hover .mark-all-btn, .column-header:hover .clear-col-btn { opacity: 0.6; }
.mark-all-btn:hover, .clear-col-btn:hover { fill: var(--text-main) !important; opacity: 1 !important; transform: scale(1.1); }

.news-list { overflow-y: auto; padding: 25px; margin: -25px; display: flex; flex-direction: column; gap: 14px; }
.news-list::-webkit-scrollbar { display: none; }

@keyframes feed-cascade {
    0% { opacity: 0; transform: translateY(-20px) translateZ(0); }
    100% { opacity: 1; transform: translateY(0) translateZ(0); }
}

.theme-btn { 
    background: transparent !important; border: none !important; color: var(--text-muted) !important; cursor: pointer; padding: 10px; margin-left: 12px; border-radius: 8px; display: flex; align-items: center; justify-content: center; transition: var(--transition-base); outline: none; -webkit-appearance: none; 
}
.theme-btn:hover { background: var(--bg-element) !important; color: var(--accent-orange) !important; transform: scale(1.1); }
.theme-btn svg { fill: currentColor !important; display: block; }

.news-card { 
    background: var(--bg-card); padding: 14px 18px; border-radius: 10px; border: 1px solid var(--border-card); transition: var(--transition-base); cursor: pointer; text-decoration: none; display: flex; flex-direction: column; flex-shrink: 0; min-height: 75px; content-visibility: auto; contain-intrinsic-size: 75px;
    opacity: 0; animation: feed-cascade 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards; animation-delay: var(--anim-delay, 0s);
}
.news-card:hover { border-color: var(--border-card-hover); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08); background: var(--bg-card-hover); z-index: 2; }
[data-theme="dark"] .news-card:hover { box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6); }

.news-title { font-size: 0.85rem; line-height: 1.4; font-weight: 500; margin-bottom: 10px; color: var(--text-card-title); transition: var(--transition-base); }
.news-meta { display: flex; justify-content: flex-end; align-items: flex-end; margin-top: auto; }
.time-text { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--text-muted); transition: var(--transition-base); }

.dismiss-btn { flex: 1; display: flex; align-items: center; justify-content: center; cursor: pointer; opacity: 0; transition: var(--transition-base); padding: 2px 0; color: var(--text-muted); }
.news-card:hover .dismiss-btn { opacity: 0.3; }
.dismiss-btn:hover { opacity: 1 !important; color: var(--text-main); }
.dismiss-btn svg { width: 14px; height: 14px; fill: currentColor; pointer-events: none; }

.news-card.unread { background: var(--bg-card-unread); border-color: var(--border-card-hover); box-shadow: 0 2px 8px rgba(0,0,0,0.02); }
.news-card.unread .news-title { color: var(--text-unread); font-weight: 600; }
.news-card.marked { background: var(--accent-orange-dim) !important; border-color: var(--accent-orange-border) !important; }
.news-card.marked:hover { background: rgba(255, 107, 0, 0.12) !important; border-color: var(--accent-orange) !important; box-shadow: 0 12px 30px rgba(255, 107, 0, 0.15); }
.news-card.marked .news-title { color: #cc5500; }
[data-theme="dark"] .news-card.marked .news-title { color: #ffbc8c; }
.news-card.marked.unread .news-title { color: var(--accent-orange); }
.news-card.urgent { border-color: var(--accent-orange) !important; background: var(--accent-orange-dim) !important; animation: shake-urgent 0.5s var(--ease-out), glow-urgent 2s infinite ease-in-out; }
.news-card.urgent .news-title { color: var(--accent-orange); font-weight: 700; }

@keyframes shake-urgent { 0%, 100% { transform: translateX(0); } 10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); } 20%, 40%, 60%, 80% { transform: translateX(4px); } }

/* =============================================
   6. ИКОНКИ (FAVICONS) И ЭФФЕКТ SPOTLIGHT
   ============================================= */
.source-icon {
    width: 18px; height: 18px; border-radius: 50%; margin-right: 8px; object-fit: cover; background: #ffffff; box-shadow: 0 0 0 0.5px rgba(0, 0, 0, 0.1);
}
[data-theme="dark"] .source-icon { filter: opacity(0.9); box-shadow: 0 0 0 0.5px rgba(255, 255, 255, 0.15); }

.news-card, .pinned-card { position: relative; }
.news-title, .news-meta, .pinned-source-wrapper, .pinned-link, .dismiss-btn { position: relative; z-index: 1; }
.unpin-btn { position: absolute; z-index: 2; } 

.news-card::before, .pinned-card::before {
    content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: radial-gradient(600px circle at var(--mouse-x, -500px) var(--mouse-y, -500px), rgba(255, 107, 0, 0.008), transparent 80%); z-index: 0; opacity: 0; transition: opacity 0.6s ease; pointer-events: none; border-radius: inherit;
}
[data-theme="dark"] .news-card::before, [data-theme="dark"] .pinned-card::before { background: radial-gradient(600px circle at var(--mouse-x, -500px) var(--mouse-y, -500px), rgba(255, 255, 255, 0.005), transparent 80%); }

#columns-container:hover .news-card::before, .sidebar:hover .pinned-card::before { opacity: 1; }

/* =============================================
   7. КОНТЕКСТНОЕ МЕНЮ (CONTEXT MENU)
   ============================================= */
.context-menu { position: fixed; background: var(--bg-context); border: 1px solid var(--border-color); border-radius: 8px; padding: 6px; z-index: 1000; box-shadow: 0 10px 30px rgba(0,0,0,0.1); display: none; flex-direction: column; min-width: 170px; animation: popIn 0.2s var(--ease-out) forwards; }
[data-theme="dark"] .context-menu { box-shadow: 0 10px 30px rgba(0,0,0,0.8); }
@keyframes popIn { 0% { opacity: 0; transform: scale(0.9) translateY(10px); } 100% { opacity: 1; transform: scale(1) translateY(0); } }
.context-menu-item { padding: 10px 14px; font-size: 0.85rem; color: var(--text-main); cursor: pointer; border-radius: 6px; transition: var(--transition-base); text-transform: lowercase; font-weight: 500; }
.context-menu-item:hover { background: var(--bg-element-hover); transform: translateX(4px); }
.context-menu-item.action-mark:hover { color: var(--accent-orange); background: var(--accent-orange-dim); }

/* =============================================
   8. СКЕЛЕТОНЫ ЗАГРУЗКИ (SKELETONS)
   ============================================= */
.skeleton { background: var(--bg-element); background-image: linear-gradient(90deg, rgba(255, 255, 255, 0) 0px, rgba(255, 255, 255, 0.4) 40px, rgba(255, 255, 255, 0) 80px); background-size: 200px 100%; background-repeat: no-repeat; animation: shimmer 1.5s infinite linear; border-radius: 4px; }
[data-theme="dark"] .skeleton { background-image: linear-gradient(90deg, rgba(255, 255, 255, 0) 0px, rgba(255, 255, 255, 0.05) 40px, rgba(255, 255, 255, 0) 80px); }
@keyframes shimmer { 0% { background-position: -200px 0; } 100% { background-position: calc(200px + 100%) 0; } }

.skeleton-header-box { height: 20px; width: 140px; margin-bottom: 20px; border-radius: 6px; }
.skeleton-card { background: var(--bg-card); padding: 14px 18px; border-radius: 10px; border: 1px solid var(--border-card); margin-bottom: 14px; height: 75px; display: flex; flex-direction: column; gap: 8px; }
.skeleton-line { height: 12px; width: 100%; border-radius: 4px; }
.skeleton-line.short { width: 60%; }
.skeleton-meta { height: 10px; width: 40px; margin-top: auto; align-self: flex-end; }

/* =============================================
   9. МОБИЛЬНЫЙ ВИД И ДЕСКТОП СВОЙСТВА
   ============================================= */
@media (min-width: 769px) { 
    .mobile-nav, .mobile-source-filter, .swipe-action-left, .swipe-action-right, .news-card-source { display: none !important; }
}

/* =============================================
   10. ВСПЛЫВАЮЩЕЕ УВЕДОМЛЕНИЕ О НОВОСТЯХ (TOAST)
   ============================================= */
.new-updates-toast {
    position: fixed;
    top: -60px; /* Прячем за верхним краем экрана */
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-orange);
    color: #ffffff;
    padding: 10px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.4);
    transition: top 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), transform 0.2s;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 8px;
}

.new-updates-toast.active {
    top: 20px; /* Выпрыгивает сверху при добавлении класса */
}

.new-updates-toast:hover {
    background: #e66000;
    transform: translateX(-50%) scale(1.05);
}

/* =============================================
   12. КНОПКА ОЧИСТКИ ЗАКРЕПОВ
   ============================================= */
.clear-pins-btn {
    width: 14px;
    height: 14px;
    fill: var(--text-muted);
    cursor: pointer;
    opacity: 0; /* Прячем по умолчанию */
    transition: var(--transition-base);
}

/* Показываем при наведении на шапку сайдбара */
.sidebar-header:hover .clear-pins-btn {
    opacity: 0.5;
}

/* Краснеет при наведении на саму иконку */
.clear-pins-btn:hover {
    opacity: 1 !important;
    fill: #e53935; 
    transform: scale(1.1);
}

/* =============================================
   13. КНОПКА ОЧИСТКИ ВСЕХ НОВОСТЕЙ
   ============================================= */
.clear-all-btn {
    width: 12px;
    height: 12px;
    fill: var(--text-muted);
    cursor: pointer;
    opacity: 0;
    transition: var(--transition-base);
    margin-top: 1px;
}

/* Показываем при наведении на блок с логотипом */
.logo-link:hover .clear-all-btn {
    opacity: 0.5;
}

/* Краснеет при наведении на саму иконку */
.clear-all-btn:hover {
    opacity: 1 !important;
    fill: #e53935;
    transform: scale(1.1);
}