/* ==========================================================================================================
   Taskist - Theme customization

   A design-token layer on top of CoreUI: a professional slate shell with a confident blue accent,
   a clean solid sidebar, gradient-underline grids and modern surfaces.

   Nothing here is page specific - per-page styling lives in css/pages/. Remove the <link> to this
   file to fall back to the stock CoreUI look.

   Sections:
     1. Design tokens
     2. Base / surfaces
     3. Sidebar (photo + colour wash, brand-gradient active states)
     4. Header & dropdowns
     5. Cards & dashboard
     6. Data grid
     7. Buttons & forms
     8. Utilities & micro-interactions
     9. Dark mode
========================================================================================================== */

/* ---------------------------------------------------------------------------------------------------------
   1. Design tokens
--------------------------------------------------------------------------------------------------------- */

:root {
    --app-font-size: 0.90rem;
    --app-font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    /* palette - professional slate shell + confident blue accent */
    --wp-blue: #3b82f6;
    --wp-blue-mid: #2563eb;
    --wp-blue-deep: #1d4ed8;
    --wp-blue-rgb: 37, 99, 235;
    --wp-slate: #1e293b;
    --wp-slate-deep: #0f172a;
    --wp-accent-gradient: linear-gradient(90deg, var(--wp-blue-deep) 0%, var(--wp-blue) 100%);

    /* grid tints */
    --wp-grid-header: #eef2fb;
    --wp-grid-stripe: rgba(37, 99, 235, .045);
    --wp-grid-hover: rgba(37, 99, 235, .09);

    /* elevation & geometry */
    --tk-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
    --tk-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.06);
    --tk-shadow-lg: 0 12px 28px rgba(15, 23, 42, 0.12), 0 4px 8px rgba(15, 23, 42, 0.06);
    --tk-radius: 0.75rem;
    --tk-radius-sm: 0.5rem;
    --tk-transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);

    /* sidebar geometry */
    --tk-sidebar-width: 15rem;

    /* remap CoreUI primary onto the blue accent */
    --cui-primary: var(--wp-blue-mid);
    --cui-primary-rgb: 37, 99, 235;
    --cui-link-color: var(--wp-blue-mid);
    --cui-link-hover-color: var(--wp-blue-deep);
}

html {
    font-size: var(--app-font-size);
}

/* ---------------------------------------------------------------------------------------------------------
   2. Base / surfaces
--------------------------------------------------------------------------------------------------------- */

body {
    font-family: var(--app-font);
    background-color: #f4f6fa;
}

.card {
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow-sm);
    transition: box-shadow var(--tk-transition);
}

.card:hover {
    box-shadow: var(--tk-shadow-md);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    font-weight: 600;
}

/* ---------------------------------------------------------------------------------------------------------
   3. Sidebar - clean solid slate with a blue active accent
--------------------------------------------------------------------------------------------------------- */

.sidebar {
    /* dark slate gradient (stays dark, never bright) over a visible texture image.
       lower wash alpha lets the image and the diagonal shift read clearly */
    background-color: #1e293b;
    background-image:
        linear-gradient(165deg, rgba(30, 41, 59, 0.82) 0%, rgba(23, 33, 58, 0.80) 50%, rgba(20, 28, 48, 0.84) 100%),
        url(../images/sidenav-bg.jpg);
    background-repeat: no-repeat, no-repeat;
    background-position: center, center;
    background-size: cover, cover;

    --cui-sidebar-nav-link-color: rgba(226, 232, 240, 0.75);
    --cui-sidebar-nav-link-hover-color: #ffffff;
    --cui-sidebar-nav-link-active-color: #ffffff;
    --cui-sidebar-nav-title-color: rgba(203, 213, 225, 0.85);
    border-right: 1px solid rgba(148, 163, 184, 0.12);
    box-shadow: var(--tk-shadow-md);
}

/* apply the custom width only to the EXPANDED sidebar; narrow / unfoldable /
   hidden states keep CoreUI's own widths so the collapse toggle still works */
.sidebar:not(.sidebar-narrow):not(.sidebar-narrow-unfoldable) {
    --cui-sidebar-width: var(--tk-sidebar-width);
}

/* keep the body content aligned with the narrower expanded sidebar */
@media (min-width: 992px) {
    .sidebar.sidebar-fixed:not(.sidebar-end):not(.hide):not(.sidebar-narrow):not(.sidebar-narrow-unfoldable) ~ * {
        --cui-sidebar-occupy-start: var(--tk-sidebar-width) !important;
    }
}

.sidebar-brand,
.sidebar-header {
    background: transparent;
    border-bottom-color: rgba(255, 255, 255, 0.12) !important;
}

.sidebar-nav .nav-link {
    border-radius: 6px;
    margin: 1px 8px;
    transition: background-color .15s ease, color .15s ease, box-shadow .15s ease;
}

.sidebar-nav .nav-link:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, .06);
}

/* active leaf / child item: blue -> gold gradient TEXT (no background pill).
   warm/cool contrast makes the gradient clearly visible even on short labels,
   while the gold stays restrained enough for the professional palette */
.sidebar-nav .nav-link.active,
.sidebar-nav .nav-link.active:hover {
    position: relative;
    font-weight: 700;
    background: linear-gradient(100deg, #60a5fa 0%, #93c5fd 45%, #fbbf24 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    box-shadow: none;
}

.sidebar-nav .nav-link.active .nav-icon-bullet {
    background-color: #fbbf24;
}

/* the icon sits inside the gradient-text link, so give it back a solid colour */
.sidebar-nav .nav-link.active .nav-icon {
    -webkit-text-fill-color: #fbbf24;
    color: #fbbf24;
}

/* active parent group header: blue left bar + subtle wash */
.nav-group.show > .nav-group-toggle,
.nav-group.active-parent > .nav-group-toggle {
    position: relative;
    color: #fff !important;
    background: rgba(59, 130, 246, 0.10) !important;
}

.nav-group.active-parent > .nav-group-toggle::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--wp-blue);
}

.nav-group.active-parent > .nav-group-toggle .nav-icon {
    color: var(--wp-blue);
}

.sidebar-nav .nav-group-items {
    background: transparent !important;
}

.sidebar-footer,
.sidebar-toggler {
    background: transparent;
    border-top-color: rgba(255, 255, 255, 0.12) !important;
}

/* ---------------------------------------------------------------------------------------------------------
   4. Header & dropdowns
--------------------------------------------------------------------------------------------------------- */

/* compact task off-canvas (history / comments) */
#pdOffCanvas {
    --cui-offcanvas-width: 360px;
}

#pdOffCanvas .offcanvas-header {
    background: var(--wp-grid-header, #eef2fb);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08) !important;
    padding: 0.7rem 1rem;
}

#pdOffCanvas .offcanvas-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--wp-blue-deep, #1d4ed8);
}

#pdOffCanvas .offcanvas-body {
    padding: 0.85rem 1rem;
}

.header {
    background-color: rgba(255, 255, 255, 0.88);
    backdrop-filter: saturate(180%) blur(8px);
}

.subheader-title {
    display: flex;
    align-items: center;
    gap: .5rem;
    color: var(--wp-blue-deep);
    font-weight: 600;
}

.dropdown-menu {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow-lg);
    padding: 0.35rem;
}

.dropdown-item {
    border-radius: var(--tk-radius-sm);
    padding: 0.5rem 0.75rem;
    transition: background-color var(--tk-transition), color var(--tk-transition), transform var(--tk-transition);
}

.dropdown-item:hover {
    background: rgba(var(--wp-blue-rgb), 0.10);
    color: var(--wp-blue-deep);
    transform: translateX(2px);
}

.dropdown-item .icon,
.dropdown-item i {
    color: var(--wp-blue-deep);
}

.dropdown-menu .dropdown-header {
    background: rgba(var(--wp-blue-rgb), 0.08);
    border-radius: var(--tk-radius-sm);
    color: var(--cui-body-color);
}

/* notification empty-state */
.tk-notify-empty {
    padding: 1.75rem 1rem;
    text-align: center;
    color: #6b7280;
}

.tk-notify-empty .tk-notify-check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 0.5rem;
    border-radius: 50%;
    background: rgba(var(--wp-blue-rgb), 0.12);
    color: var(--wp-blue-deep);
    font-size: 1.1rem;
}

/* role badge in the user menu */
.tk-role-badge {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    color: #fff;
    background: var(--wp-accent-gradient);
}

/* ---- header tools: global search + quick-add ---- */
.header-tools {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex: 1 1 auto;
}

/* global search */
.header-search {
    position: relative;
    flex: 1 1 auto;
    max-width: 520px;
}

.header-search__icon {
    position: absolute;
    top: 50%;
    left: 0.75rem;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: #94a3b8;
    pointer-events: none;
}

.header-search .form-control {
    height: 36px;
    border-radius: 20px;
    background: #eef2f9;
    border: 1px solid transparent;
    padding-left: 2.1rem;
    padding-right: 3rem;
    font-size: 0.85rem;
    transition: background-color var(--tk-transition), border-color var(--tk-transition), box-shadow var(--tk-transition);
}

.header-search .form-control:focus {
    background: #fff;
    border-color: var(--wp-blue);
    box-shadow: 0 0 0 3px rgba(var(--wp-blue-rgb), 0.15);
}

.header-search__kbd {
    position: absolute;
    top: 50%;
    right: 0.6rem;
    transform: translateY(-50%);
    font-size: 0.62rem;
    font-weight: 600;
    color: #64748b;
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 5px;
    padding: 0.1rem 0.35rem;
    pointer-events: none;
}

.header-search__results {
    display: none;
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 10px;
    box-shadow: var(--tk-shadow-lg);
    padding: 0.35rem;
    max-height: 24rem;
    overflow-y: auto;
    z-index: 1050;
}

.header-search__results.show {
    display: block;
}

.header-search__group {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #94a3b8;
    padding: 0.5rem 0.6rem 0.25rem;
}

.header-search__item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.6rem;
    border-radius: var(--tk-radius-sm);
    color: var(--cui-body-color);
    text-decoration: none;
    cursor: pointer;
}

.header-search__item i {
    width: 1.1rem;
    text-align: center;
    color: var(--wp-blue-deep);
    font-size: 0.85rem;
}

.header-search__item:hover,
.header-search__item.active {
    background: rgba(var(--wp-blue-rgb), 0.10);
}

.header-search__item .hs-label {
    flex: 1 1 auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.85rem;
}

.header-search__item .hs-sub {
    font-size: 0.72rem;
    color: #94a3b8;
    white-space: nowrap;
}

.header-search__empty {
    padding: 1.1rem 0.6rem;
    text-align: center;
    color: #94a3b8;
    font-size: 0.82rem;
}

/* quick-add ("+") button - sits in the right-side nav, just before the bell */
.header-create-wrap {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
}

.header-create {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: none;
    border-radius: 9px;
    color: #fff;
    background: var(--wp-accent-gradient);
    box-shadow: var(--tk-shadow-sm);
    transition: filter var(--tk-transition), transform var(--tk-transition);
}

.header-create:hover {
    color: #fff;
    filter: brightness(1.08);
    transform: translateY(-1px);
}

/* quick-add menu (shares the app dropdown shell, adds chips + label) */
.tk-menu.dropdown-menu {
    min-width: 15rem;
}

.tk-menu--compact.dropdown-menu {
    min-width: 13rem;
}

.tk-menu__label {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #94a3b8;
    padding: 0.4rem 0.65rem 0.3rem;
}

.tk-menu .dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.88rem;
}

.tk-menu__chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    font-size: 0.8rem;
    color: #fff;
    flex: 0 0 auto;
}

.tk-menu .dropdown-item:hover .tk-menu__chip {
    filter: brightness(1.05);
}

.tk-menu__chip--blue { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.tk-menu__chip--indigo { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.tk-menu__chip--teal { background: linear-gradient(135deg, #14b8a6, #0d9488); }
.tk-menu__chip--green { background: linear-gradient(135deg, #22c55e, #16a34a); }
.tk-menu__chip--amber { background: linear-gradient(135deg, #f59e0b, #d97706); }

/* hide the search on very small screens to keep the bar usable */
@media (max-width: 575.98px) {
    .header-search {
        display: none;
    }
}

/* ---------------------------------------------------------------------------------------------------------
   5. Cards & dashboard
--------------------------------------------------------------------------------------------------------- */

.tk-stat-card {
    position: relative;
    overflow: hidden;
    border: none;
    border-radius: var(--tk-radius);
    color: #fff;
    box-shadow: var(--tk-shadow-md);
    transition: transform var(--tk-transition), box-shadow var(--tk-transition);
}

.tk-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--tk-shadow-lg);
}

.tk-stat-card .tk-stat-icon {
    position: absolute;
    right: 0.75rem;
    bottom: 0.25rem;
    font-size: 3.5rem;
    opacity: 0.18;
    line-height: 1;
}

.tk-stat-primary { background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%); }
.tk-stat-warning { background: linear-gradient(135deg, #334155 0%, #475569 100%); }
.tk-stat-danger  { background: linear-gradient(135deg, #b91c1c 0%, #ef4444 100%); }

/* welcome banner */
.alert.shadow-lg {
    border: none;
    border-radius: var(--tk-radius);
    background: linear-gradient(90deg, rgba(37, 99, 235, .08) 0%, rgba(59, 130, 246, .05) 100%);
    box-shadow: var(--tk-shadow-sm) !important;
}

/* ---------------------------------------------------------------------------------------------------------
   6. Data grid - blue gradient-underline header, light cell borders
--------------------------------------------------------------------------------------------------------- */

/* soften the heavy table-bordered grid lines to a light hairline */
table.dataTable.table-bordered > :not(caption) > * > * {
    border-color: rgba(15, 23, 42, 0.06);
}

/* header tint + one CONTINUOUS blue gradient underline across the whole row.
   painted as the row background bottom-strip so it doesn't break per cell */
table.dataTable thead tr {
    background-color: var(--wp-grid-header);
    background-image: linear-gradient(90deg, #1e40af 0%, #3b82f6 50%, #1e40af 100%);
    background-repeat: no-repeat;
    background-position: bottom;
    background-size: 100% 1.5px;
}

table.dataTable thead th {
    /* transparent so the row's tint + gradient strip below shows through */
    background-color: transparent !important;
    background-image: none !important;
    border: 0 !important;
    font-weight: 700;
    color: #1f2937;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-size: 0.78rem;
    vertical-align: middle;
    padding-top: .45rem;
    padding-bottom: .45rem;
}

/* neutralise Bootstrap's per-cell fills so the row zebra/hover render as one band */
table.dataTable > tbody > tr > td,
table.dataTable > tbody > tr > th {
    --bs-table-bg-type: transparent;
    --bs-table-accent-bg: transparent;
    background-color: transparent !important;
    background-image: none !important;
    box-shadow: none !important;
}

table.dataTable > tbody > tr {
    transition: background .12s ease;
}

table.dataTable > tbody > tr:nth-of-type(even) {
    background-color: var(--wp-grid-stripe);
}

table.dataTable > tbody > tr:hover {
    background: var(--wp-grid-hover);
}

.dataTable a:hover {
    color: var(--wp-blue-deep) !important;
}

.dataTables_paginate .page-item.active .page-link {
    background-color: var(--wp-blue);
    border-color: var(--wp-blue);
    color: #fff;
}

.dataTables_paginate .page-link:focus {
    box-shadow: none;
}

/* ---------------------------------------------------------------------------------------------------------
   7. Buttons & forms
--------------------------------------------------------------------------------------------------------- */

.btn-primary {
    background: linear-gradient(135deg, var(--wp-blue) 0%, var(--wp-blue-deep) 100%);
    border: none;
    box-shadow: var(--tk-shadow-sm);
    transition: transform var(--tk-transition), box-shadow var(--tk-transition), filter var(--tk-transition);
}

.btn-primary:hover,
.btn-primary:focus {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    filter: none;
    transform: translateY(-1px);
    box-shadow: var(--tk-shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn {
    border-radius: var(--tk-radius-sm);
}

.form-control,
.form-select {
    border-radius: var(--tk-radius-sm);
    transition: border-color var(--tk-transition), box-shadow var(--tk-transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--wp-blue);
    box-shadow: 0 0 0 0.2rem rgba(var(--wp-blue-rgb), 0.18);
}

.form-check-input:checked {
    background-color: var(--wp-blue-deep);
    border-color: var(--wp-blue-deep);
}

/* ---------------------------------------------------------------------------------------------------------
   8. Utilities & micro-interactions
--------------------------------------------------------------------------------------------------------- */

.text-teal,
.text-accent {
    color: var(--wp-blue);
}

/* skeleton loading placeholder */
.tk-skeleton {
    position: relative;
    overflow: hidden;
    background: rgba(15, 23, 42, 0.06);
    border-radius: var(--tk-radius-sm);
}

.tk-skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: tk-shimmer 1.4s infinite;
}

@keyframes tk-shimmer {
    100% { transform: translateX(100%); }
}

.waves-effect.waves-light .waves-ripple {
    background: rgba(255, 255, 255, 0.4);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

/* ---------------------------------------------------------------------------------------------------------
   9. Dark mode
--------------------------------------------------------------------------------------------------------- */

[data-coreui-theme="dark"] body {
    background-color: #0f1424;
}

[data-coreui-theme="dark"] .header {
    background-color: rgba(20, 26, 46, 0.85);
}

[data-coreui-theme="dark"] .card {
    border-color: rgba(255, 255, 255, 0.06);
}

[data-coreui-theme="dark"] table.dataTable thead th {
    color: #e5e7eb;
}