/* ============================================================
   Tokens
   ============================================================ */
:root {
    --topbar-h:      60px;
    --sidebar-w:     260px;
    --bg:            #09090b;
    --surface:       #111115;
    --surface-2:     #1c1c22;
    --border:        rgba(255, 255, 255, 0.07);
    --primary:       #8b5cf6;
    --primary-soft:  rgba(139, 92, 246, 0.12);
    --primary-glow:  rgba(139, 92, 246, 0.25);
    --cyan:          #22d3ee;
    --cyan-soft:     rgba(34, 211, 238, 0.1);
    --red:           #ef4444;
    --text:          #f4f4f5;
    --text-muted:    #71717a;
    --radius:        10px;
    --transition:    0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Light theme overrides
   ============================================================ */
[data-theme="light"] {
    --bg:           #f4f4f8;
    --surface:      #ffffff;
    --surface-2:    #ebebf2;
    --border:       rgba(0, 0, 0, 0.08);
    --primary:      #7c3aed;
    --primary-soft: rgba(124, 58, 237, 0.08);
    --primary-glow: rgba(124, 58, 237, 0.18);
    --cyan:         #0891b2;
    --cyan-soft:    rgba(8, 145, 178, 0.1);
    --red:          #dc2626;
    --text:         #18181b;
    --text-muted:   #52525b;
}

/* ============================================================
   Body offset
   ============================================================ */
body {
    padding-top: var(--topbar-h);
}

/* ============================================================
   Top Bar
   ============================================================ */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-h);
    z-index: 900;
    display: flex;
    align-items: center;
    padding: 0 0.75rem;
    gap: 0.5rem;
    background: color-mix(in srgb, var(--cyan) 18%, var(--bg));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid color-mix(in srgb, var(--cyan) 30%, transparent);
    box-shadow: 0 1px 24px rgba(0, 0, 0, 0.15);
}

.topbar-toggle {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.topbar-toggle:hover,
.topbar-toggle.is-open {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text);
}

.topbar-brand {
    flex: 1;
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--cyan), color-mix(in srgb, var(--cyan) 60%, var(--primary)));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    user-select: none;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ── Theme toggle button ── */
.topbar-theme-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.topbar-theme-btn:hover {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text);
}

.topbar-theme-btn:active {
    transform: scale(0.93);
}

/* ── Icon button (notif / cart) ── */
.topbar-icon-btn {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.topbar-icon-btn:hover {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text);
}

.topbar-icon-btn:active {
    transform: scale(0.93);
}

.topbar-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 17px;
    height: 17px;
    border-radius: 999px;
    background: var(--red);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    border: 2px solid var(--bg);
    line-height: 1;
}

/* ============================================================
   Overlay
   ============================================================ */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    z-index: 950;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100dvh;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform var(--transition);
    overflow: hidden;
}

.sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 40px rgba(0, 0, 0, 0.6);
}

/* ── Header ── */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1rem 1rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--primary-soft);
    border: 1px solid rgba(139, 92, 246, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-brand-name {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.01em;
}

.sidebar-brand-sub {
    margin: 0;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.sidebar-close {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
}

.sidebar-close:hover {
    background: var(--surface-2);
    color: var(--text);
}

/* ── Nav ── */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0.75rem;
    scrollbar-width: none;
}

.sidebar-nav::-webkit-scrollbar {
    display: none;
}

.menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.7rem 0.9rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
    position: relative;
}

.menu-item:hover:not(:disabled) {
    background: var(--surface);
    border-color: var(--border);
    color: var(--text);
}

.menu-item.active {
    background: var(--primary-soft);
    border-color: rgba(139, 92, 246, 0.2);
    color: var(--primary);
}

.menu-item:active:not(:disabled) {
    transform: scale(0.98);
}

.menu-item:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.menu-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--surface);
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: all var(--transition);
}

.menu-item.active .menu-icon {
    background: rgba(139, 92, 246, 0.2);
    color: var(--primary);
}

.menu-label {
    flex: 1;
}

.menu-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
    box-shadow: 0 0 8px var(--primary-glow);
}

/* ── Footer ── */
.sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
    background: color-mix(in srgb, var(--primary) 8%, var(--bg));
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-shrink: 0;
}

.sidebar-footer-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.7rem 1rem;
    border-radius: var(--radius);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    -webkit-tap-highlight-color: transparent;
}

.sidebar-footer-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.sidebar-footer-btn.telegram {
    background: var(--cyan-soft);
    border: 1px solid rgba(34, 211, 238, 0.2);
    color: var(--cyan);
}

.sidebar-footer-btn.telegram:hover:not(:disabled) {
    background: rgba(34, 211, 238, 0.15);
    border-color: rgba(34, 211, 238, 0.35);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(34, 211, 238, 0.15);
}

.sidebar-footer-btn.logout {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.18);
    color: #f87171;
}

.sidebar-footer-btn.logout:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.13);
    border-color: rgba(239, 68, 68, 0.3);
    transform: translateY(-1px);
}

.sidebar-footer-btn:active:not(:disabled) {
    transform: scale(0.97);
}

/* ============================================================
   Notification bottom-sheet modal
   ============================================================ */
.notif-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    animation: fadeIn 0.18s ease;
}

.notif-modal {
    width: 100%;
    max-width: 640px;
    height: 70vh;
    background: var(--surface);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 -8px 40px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.26s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

.notif-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.notif-modal-title {
    color: var(--text);
    font-size: 1.05rem;
    font-weight: 700;
}

.notif-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
}

.notif-modal-close:hover {
    background: var(--surface-2);
    color: var(--text);
}

.notif-modal-body {
    flex: 1;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.notif-modal-body::-webkit-scrollbar { width: 4px; }
.notif-modal-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.notif-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    gap: 0.5rem;
    height: 100%;
}

.notif-empty p { margin: 0; }

.notif-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid var(--border);
    border-left: 3px solid transparent;
    transition: background var(--transition);
}

.notif-item:last-child { border-bottom: none; }

.notif-unread {
    background: var(--primary-soft);
    border-left-color: var(--primary);
}

.notif-read {
    opacity: 0.55;
}

.notif-message {
    color: var(--text);
    font-size: 0.88rem;
    line-height: 1.5;
}

.notif-time {
    color: var(--text-muted);
    font-size: 0.74rem;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (hover: none) {
    .menu-item:hover { background: transparent; border-color: transparent; color: var(--text-muted); }
    .menu-item.active:hover { background: var(--primary-soft); color: var(--primary); }
    .topbar-toggle:hover { background: transparent; border-color: transparent; }
    .topbar-icon-btn:hover { background: transparent; border-color: transparent; }
}