/* Premium Glassmorphic Sliding Navigation Sidebar (Quick Access) */

.qas-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    height: 100dvh;
    background: var(--surface-1);
    backdrop-filter: var(--glass-blur-panel);
    -webkit-backdrop-filter: var(--glass-blur-panel);
    border-right: 1px solid var(--border-1);
    box-shadow: 15px 0 45px rgba(0, 0, 0, 0.35);
    z-index: 2000;
    transform: translateX(-100%);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* Open state */
.qas-sidebar.active {
    transform: translateX(0);
}

/* Riding Toggle Button - stays at viewport edge when closed, slides with sidebar when opened */
.qas-toggle-btn {
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 48px;
    background: var(--surface-1);
    backdrop-filter: var(--glass-blur-chip);
    -webkit-backdrop-filter: var(--glass-blur-chip);
    border: 1px solid var(--border-1);
    border-left: none;
    border-radius: 0 10px 10px 0;
    color: var(--fg-2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.15);
    padding: 0;
    z-index: 2001;
    outline: none;
}

.qas-toggle-btn:hover {
    background: var(--primary-color); /* Accent primary */
    color: var(--fg-on-grad);
    width: 28px;
    box-shadow: 0 0 15px rgba(var(--primary-rgb), 0.4);
}

.qas-toggle-btn .material-symbols-outlined {
    font-size: 20px;
    font-weight: 700;
    transition: transform 0.3s ease;
}

/* Header style inside Sidebar */
.qas-header {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.qas-logo-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(var(--primary-rgb), 0.3));
}

.qas-title {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: var(--agent-text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(var(--primary-rgb), 0.15);
}

/* Menu Stack */
.qas-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 20px 14px;
    flex: 1;
    overflow-y: auto;
}

/* Menu Item Link */
.qas-menu-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 11px 16px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    user-select: none;
    -webkit-user-select: none;
}

.qas-menu-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    transform: translateX(4px);
    border-color: rgba(255, 255, 255, 0.04);
}

.qas-menu-item.active {
    background: rgba(var(--primary-rgb), 0.12);
    border-color: rgba(var(--primary-rgb), 0.25);
    color: var(--secondary-color);
    box-shadow: inset 0 0 10px rgba(var(--primary-rgb), 0.05);
}

.qas-menu-item .material-symbols-outlined {
    font-size: 22px;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.22s ease;
}

.qas-menu-item:hover .material-symbols-outlined {
    color: var(--secondary-color);
    transform: scale(1.08);
}

.qas-menu-item.active .material-symbols-outlined {
    color: var(--secondary-color);
}

/* Semi-transparent Overlay Background */
.qas-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.qas-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Responsive adjustments for narrow/mobile screens */
@media (max-width: 480px) {
    .qas-sidebar {
        width: 80%;
        max-width: 270px;
    }
}

/* ═══════════════════════════════════════════════════════════════
   СВЕТЛАЯ ТЕМА — панель быстрого доступа в стиль остальных блоков
   (белая поверхность + тёмный текст, индиго-акцент сохранён).
   ═══════════════════════════════════════════════════════════════ */
html[data-mode="light"] .qas-sidebar {
    background: var(--surface-1);
    border-right-color: var(--border-1);
}
html[data-mode="light"] .qas-header {
    border-bottom-color: var(--border-1);
}
html[data-mode="light"] .qas-title {
    background: none;
    -webkit-text-fill-color: var(--primary-dark);
    color: var(--primary-dark);
    text-shadow: none;
}
html[data-mode="light"] .qas-toggle-btn {
    background: var(--surface-1);
    border-color: var(--border-2);
    color: var(--fg-2);
}
html[data-mode="light"] .qas-toggle-btn:hover {
    background: var(--primary-color);
    color: var(--fg-on-grad);
}
html[data-mode="light"] .qas-menu-item {
    color: var(--fg-2);
}
html[data-mode="light"] .qas-menu-item .material-symbols-outlined {
    color: var(--fg-3);
}
html[data-mode="light"] .qas-menu-item:hover {
    background: var(--hover-bg);
    color: var(--fg-1);
    border-color: var(--border-1);
}
html[data-mode="light"] .qas-menu-item:hover .material-symbols-outlined {
    color: var(--primary-color);
}
html[data-mode="light"] .qas-menu-item.active {
    background: rgba(var(--primary-rgb), 0.12);
    border-color: rgba(var(--primary-rgb), 0.3);
    color: var(--primary-dark);
}
html[data-mode="light"] .qas-menu-item.active .material-symbols-outlined {
    color: var(--primary-dark);
}