:root {
    --bg-color: #1a1a1a;
    --sidebar-bg: #222222;
    --content-bg: #1a1a1a;
    --text-color: #e0e0e0;
    --accent-color: #d4af37;
    --border-color: #333333;
    --hover-bg: #333333;
    --btn-bg: #d4af37;
    --btn-text: #000000;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg-color); color: var(--text-color); line-height: 1.6; overflow: hidden; }

#app { display: flex; height: 100vh; width: 100vw; position: relative; }

/* Сайдбар */
#sidebar {
    width: 320px; background: var(--sidebar-bg); border-right: 1px solid var(--border-color);
    display: flex; flex-direction: column; z-index: 1000; transition: transform 0.3s ease;
}

.sidebar-header { padding: 20px; border-bottom: 1px solid var(--border-color); }
.sidebar-header h2 { color: var(--accent-color); text-align: center; margin-bottom: 15px; }

.action-btn {
    width: 100%; padding: 10px; background: var(--btn-bg); color: var(--btn-text);
    border: none; border-radius: 5px; cursor: pointer; font-weight: bold; margin-bottom: 15px;
}

.search-container input {
    width: 100%; padding: 10px; background: #2a2a2a; color: #fff; border: 1px solid var(--border-color); border-radius: 5px;
}

#cardList { flex-grow: 1; overflow-y: auto; }
.card-item { padding: 12px 20px; cursor: pointer; border-bottom: 1px solid rgba(255,255,255,0.05); }
.card-item:hover { background: var(--hover-bg); }
.card-item.active { background: var(--hover-bg); border-left: 4px solid var(--accent-color); }

/* Контент */
#content { flex-grow: 1; overflow-y: auto; padding: 40px; background: var(--content-bg); }
#cardDetail { max-width: 800px; margin: 0 auto; }
.card-header h1 { color: var(--accent-color); text-align: center; margin-bottom: 20px; font-size: 2rem; }
.card-image-container { text-align: center; margin: 20px 0; }
.card-image-container img { max-width: 100%; border-radius: 10px; box-shadow: 0 5px 25px rgba(0,0,0,0.5); }
.card-content { white-space: pre-wrap; font-size: 1.1rem; text-align: justify; margin: 30px 0; }

.hidden { display: none !important; }

/* Мобильные стили */
#mobileMenuBtn {
    position: fixed; top: 15px; left: 15px; width: 45px; height: 45px; background: var(--accent-color);
    border: none; border-radius: 50%; cursor: pointer; z-index: 2000; display: none;
    flex-direction: column; justify-content: center; align-items: center; gap: 4px; box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
#mobileMenuBtn .bar { width: 22px; height: 3px; background: #000; border-radius: 2px; }

#sidebarOverlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 900; opacity: 0; pointer-events: none; transition: 0.3s;
}

@media (max-width: 768px) {
    #mobileMenuBtn { display: flex; }
    #sidebar { position: fixed; left: 0; top: 0; bottom: 0; transform: translateX(-100%); width: 280px; }
    #app.menu-open #sidebar { transform: translateX(0); }
    #app.menu-open #sidebarOverlay { opacity: 1; pointer-events: auto; }
    #content { padding: 70px 15px 20px; }
    .card-header h1 { font-size: 1.5rem; }
}