:root {
    --sidebar-w: 260px;
    --sidebar-collapsed-w: 65px;
    --navbar-h: 60px;
}

body {
    font-family: 'DM Sans', system-ui, sans-serif;
}

/* Sidebar transition */
#sidebar {
    transition: width 280ms cubic-bezier(.4, 0, .2, 1);
    width: var(--sidebar-w);
}

#sidebar.collapsed {
    width: var(--sidebar-collapsed-w);
}

#mainContent {
    transition: margin-left 280ms cubic-bezier(.4, 0, .2, 1);
    margin-left: var(--sidebar-w);
}

#mainContent.collapsed {
    margin-left: var(--sidebar-collapsed-w);
}

#navbar {
    transition: left 280ms cubic-bezier(.4, 0, .2, 1);
    left: var(--sidebar-w);
}

#navbar.collapsed {
    left: var(--sidebar-collapsed-w);
}

/* Sidebar label & text fade */
#sidebar .sidebar-text {
    transition: opacity 200ms ease, width 200ms ease;
}

#sidebar.collapsed .sidebar-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

#sidebar.collapsed .nav-badge {
    opacity: 0;
}

#sidebar.collapsed .nav-arrow {
    opacity: 0;
}

#sidebar.collapsed .section-label {
    opacity: 0;
    font-size: 0;
    padding-top: 6px;
}

/* Submenu */
.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 280ms cubic-bezier(.4, 0, .2, 1);
}

.nav-item.open>.nav-submenu {
    max-height: 360px;
}

#sidebar.collapsed .nav-submenu {
    max-height: 0 !important;
}

.nav-item.open>.nav-link .nav-arrow {
    transform: rotate(90deg);
}

/* Active nav indicator — light mode */
.nav-link.active {
    color: #881116 !important;
    background: rgba(136, 17, 22, .08) !important;
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 58%;
    background: #881116;
    border-radius: 0 3px 3px 0;
}

/* Active nav indicator — dark mode */
.dark .nav-link.active {
    color: #f87171 !important;
    background: rgba(136, 17, 22, .18) !important;
}

.dark .nav-link.active::before {
    background: #f87171;
}

.nav-link {
    position: relative;
}

/* Tooltip for collapsed sidebar */
.tooltip-text {
    position: absolute;
    top: 50%;
    transform: translateY(-50%) translateX(-4px);
    left: calc(var(--sidebar-collapsed-w) + 2px);
    background: #1f2937;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
    white-space: nowrap;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 140ms ease;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tooltip-text::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 4px solid transparent;
    border-right-color: #1f2937;
}

#sidebar.collapsed .has-tooltip:hover .tooltip-text {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* Hide tooltips when sidebar is expanded */
#sidebar:not(.collapsed) .tooltip-text {
    display: none;
}

#sidebar.collapsed .clock-container {
    display: none;
}

/* Dropdown animation */
.dropdown-panel {
    transition: opacity 160ms ease, transform 160ms ease;
    transform-origin: top right;
}

.dropdown-panel.hidden {
    opacity: 0;
    transform: scale(.97) translateY(-6px);
    pointer-events: none;
}

.dropdown-panel:not(.hidden) {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: all;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #e2e2e6;
    border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb {
    background: #333344;
}

/* Page enter animation */
.page-enter {
    animation: fadeUp .22s ease both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile */
@media (max-width: 768px) {
    #sidebar {
        position: fixed;
        z-index: 1000;
        left: calc(-1 * var(--sidebar-w));
        width: var(--sidebar-w) !important;
    }

    #sidebar.mobile-open {
        left: 0;
        box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
    }

    #mainContent,
    #navbar {
        margin-left: 0 !important;
        left: 0 !important;
    }

    .month-button{
        font-size: 9px !important;
    }
    .date.month-btn{
        gap: 5px !important;
    }
}

/* Dark mode base overrides */
.dark body {
    background: #0f0f14;
    color: #e8e8f0;
}

.modal-panel {
    animation: modalIn 0.2s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.login-screen {
    background: url('./../img/login_bg.jpg') no-repeat center center/cover;
}

.divider {
    width: 48px;
    height: 3px;
    background: #911517;
    border-radius: 9999px;
}

.date.month-btn {
    display: flex;
    align-items: center;
    gap: 12px;
}

.month-button {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 12px;
    background: #911517;
    border-radius: 12px;
    color: #fff;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.month-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(201, 169, 110, 0.08), transparent);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.month-button:hover {
    border-color: #881116;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(201, 169, 110, 0.12);
}

.month-button:hover::before {
    opacity: 1;
}

.month-button:active {
    transform: translateY(0);
}