/**
 * Work Management Pro — Frontend CSS
 * Shared design tokens, layout, cards, modals, tables, forms, utilities.
 * Mobile-first. Dark-mode ready via prefers-color-scheme.
 *
 * @package WorkManagementPro
 * @version 1.0.0
 */

/* ─── Design Tokens ──────────────────────────────────────────────────────── */
:root {
    --wmp-primary:        #6366f1;
    --wmp-primary-dark:   #4f46e5;
    --wmp-primary-light:  #e0e7ff;
    --wmp-secondary:      #8b5cf6;
    --wmp-accent:         #06b6d4;

    --wmp-success:        #22c55e;
    --wmp-success-bg:     #dcfce7;
    --wmp-warning:        #f59e0b;
    --wmp-warning-bg:     #fef3c7;
    --wmp-danger:         #ef4444;
    --wmp-danger-bg:      #fee2e2;
    --wmp-info:           #3b82f6;
    --wmp-info-bg:        #dbeafe;

    --wmp-bg:             #f8fafc;
    --wmp-surface:        #ffffff;
    --wmp-border:         #e2e8f0;
    --wmp-border-focus:   #6366f1;

    --wmp-text:           #1e293b;
    --wmp-text-muted:     #64748b;
    --wmp-text-light:     #94a3b8;
    --wmp-text-inverse:   #ffffff;

    --wmp-radius-sm:      6px;
    --wmp-radius:         10px;
    --wmp-radius-lg:      16px;
    --wmp-radius-xl:      24px;
    --wmp-radius-full:    9999px;

    --wmp-shadow-sm:      0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --wmp-shadow:         0 4px 16px rgba(0,0,0,.08);
    --wmp-shadow-lg:      0 10px 40px rgba(0,0,0,.12);
    --wmp-shadow-fab:     0 6px 20px rgba(99,102,241,.4);

    --wmp-transition:     .2s ease;

    --wmp-nav-h:          60px;     /* bottom nav height */
    --wmp-header-h:       56px;     /* top header height */
    --wmp-sidebar-w:      240px;

    /* Priority colours */
    --wmp-priority-low:      #22c55e;
    --wmp-priority-medium:   #f59e0b;
    --wmp-priority-high:     #ef4444;
    --wmp-priority-urgent:   #9333ea;
}

@media (prefers-color-scheme: dark) {
    :root {
        --wmp-bg:          #0f172a;
        --wmp-surface:     #1e293b;
        --wmp-border:      #334155;
        --wmp-text:        #f1f5f9;
        --wmp-text-muted:  #94a3b8;
        --wmp-text-light:  #475569;
        --wmp-primary-light: rgba(99,102,241,.2);
    }
}

/* ─── Reset / Base ───────────────────────────────────────────────────────── */
.wmp-app *,
.wmp-mgr-app *,
.wmp-app *::before,
.wmp-app *::after,
.wmp-mgr-app *::before,
.wmp-mgr-app *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.wmp-app,
.wmp-mgr-app {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--wmp-text);
    background: var(--wmp-bg);
    -webkit-font-smoothing: antialiased;
}

/* ─── Utility ────────────────────────────────────────────────────────────── */
.wmp-text-muted   { color: var(--wmp-text-muted); }
.wmp-text-center  { text-align: center; }
.wmp-text-right   { text-align: right; }
.wmp-d-none       { display: none !important; }
.wmp-mt-1         { margin-top: .5rem; }
.wmp-mt-2         { margin-top: 1rem; }
.hide-xs          { display: none; }
@media (min-width: 600px) { .hide-xs { display: unset; } }

/* ─── Spinner ────────────────────────────────────────────────────────────── */
.wmp-spinner {
    display: inline-block;
    width: 22px; height: 22px;
    border: 3px solid var(--wmp-border);
    border-top-color: var(--wmp-primary);
    border-radius: 50%;
    animation: wmpSpin .7s linear infinite;
}
.wmp-spinner-center {
    display: flex;
    justify-content: center;
    padding: 2rem;
}
@keyframes wmpSpin { to { transform: rotate(360deg); } }

/* ─── Toast ──────────────────────────────────────────────────────────────── */
.wmp-toast-wrap {
    position: fixed;
    bottom: calc(var(--wmp-nav-h) + 12px);
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    pointer-events: none;
}
.wmp-toast {
    background: var(--wmp-text);
    color: var(--wmp-text-inverse);
    padding: .6rem 1.2rem;
    border-radius: var(--wmp-radius-full);
    font-size: 13px;
    box-shadow: var(--wmp-shadow);
    animation: wmpToastIn .3s ease, wmpToastOut .3s ease 2.7s forwards;
    pointer-events: none;
    white-space: nowrap;
}
.wmp-toast--success { background: var(--wmp-success); }
.wmp-toast--error   { background: var(--wmp-danger); }
@keyframes wmpToastIn  { from { opacity: 0; transform: translateY(8px); } to { opacity:1; transform:none; } }
@keyframes wmpToastOut { to   { opacity: 0; transform: translateY(-6px); } }

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.wmp-btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .6rem 1.2rem;
    border-radius: var(--wmp-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--wmp-transition);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
}
.wmp-btn svg { width: 16px; height: 16px; }
.wmp-btn--primary {
    background: var(--wmp-primary);
    color: #fff;
}
.wmp-btn--primary:hover { background: var(--wmp-primary-dark); }
.wmp-btn--success {
    background: var(--wmp-success);
    color: #fff;
}
.wmp-btn--danger {
    background: var(--wmp-danger);
    color: #fff;
}
.wmp-btn--outline {
    background: transparent;
    border-color: var(--wmp-primary);
    color: var(--wmp-primary);
}
.wmp-btn--danger-outline {
    background: transparent;
    border-color: var(--wmp-danger);
    color: var(--wmp-danger);
}
.wmp-btn--ghost {
    background: transparent;
    color: var(--wmp-text-muted);
}
.wmp-btn--ghost:hover { background: var(--wmp-border); }
.wmp-btn--sm { padding: .4rem .9rem; font-size: 13px; }
.wmp-btn--block { width: 100%; justify-content: center; }
.wmp-btn:disabled { opacity: .5; pointer-events: none; }

.wmp-link-btn {
    background: none;
    border: none;
    padding: 0;
    color: var(--wmp-primary);
    font-size: 13px;
    cursor: pointer;
    font-weight: 500;
}

.wmp-icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--wmp-radius);
    color: var(--wmp-text-muted);
    transition: var(--wmp-transition);
    position: relative;
}
.wmp-icon-btn svg { width: 20px; height: 20px; }
.wmp-icon-btn:hover { background: var(--wmp-border); }

/* ─── Badge ──────────────────────────────────────────────────────────────── */
.wmp-badge {
    position: absolute;
    top: 4px; right: 4px;
    background: var(--wmp-danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    min-width: 16px; height: 16px;
    border-radius: var(--wmp-radius-full);
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
    padding: 0 3px;
}

/* ─── Form Controls ──────────────────────────────────────────────────────── */
.wmp-input,
.wmp-select,
.wmp-textarea {
    display: block;
    width: 100%;
    padding: .6rem .9rem;
    border: 1.5px solid var(--wmp-border);
    border-radius: var(--wmp-radius);
    font-size: 14px;
    color: var(--wmp-text);
    background: var(--wmp-surface);
    outline: none;
    transition: border-color var(--wmp-transition);
    -webkit-appearance: none;
}
.wmp-input:focus,
.wmp-select:focus,
.wmp-textarea:focus {
    border-color: var(--wmp-border-focus);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}
.wmp-input--sm,
.wmp-select--sm { padding: .4rem .7rem; font-size: 13px; }
.wmp-textarea   { resize: vertical; min-height: 80px; }

.wmp-file-input {
    display: block; width: 100%;
    font-size: 13px; color: var(--wmp-text-muted);
}

.wmp-form-group { margin-bottom: 1rem; }
.wmp-form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: .35rem; color: var(--wmp-text); }
.wmp-form-group label .req { color: var(--wmp-danger); }

.wmp-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ─── Search Bar ─────────────────────────────────────────────────────────── */
.wmp-search-bar {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: var(--wmp-surface);
    border: 1.5px solid var(--wmp-border);
    border-radius: var(--wmp-radius-full);
    padding: .45rem 1rem;
    margin-bottom: 1rem;
}
.wmp-search-bar svg { width: 16px; height: 16px; color: var(--wmp-text-muted); flex-shrink: 0; }
.wmp-search-bar input {
    border: none; outline: none; background: transparent;
    font-size: 14px; color: var(--wmp-text); flex: 1;
}
.wmp-search-bar--sm { padding: .3rem .8rem; }

/* ─── Chip / Filter Row ──────────────────────────────────────────────────── */
.wmp-chip-row {
    display: flex;
    gap: .5rem;
    overflow-x: auto;
    padding-bottom: .5rem;
    margin-bottom: 1rem;
    scrollbar-width: none;
}
.wmp-chip-row::-webkit-scrollbar { display: none; }
.wmp-chip {
    flex-shrink: 0;
    padding: .35rem .9rem;
    border-radius: var(--wmp-radius-full);
    border: 1.5px solid var(--wmp-border);
    background: var(--wmp-surface);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    color: var(--wmp-text-muted);
    transition: var(--wmp-transition);
    white-space: nowrap;
}
.wmp-chip:hover,
.wmp-chip--active {
    background: var(--wmp-primary);
    border-color: var(--wmp-primary);
    color: #fff;
}

/* ─── Status Chips ───────────────────────────────────────────────────────── */
.wmp-status {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .25rem .65rem;
    border-radius: var(--wmp-radius-full);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}
.wmp-status::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
}
.wmp-status--pending      { background: var(--wmp-warning-bg);  color: #92400e; }
.wmp-status--in_progress  { background: var(--wmp-info-bg);     color: #1e40af; }
.wmp-status--completed    { background: var(--wmp-success-bg);  color: #166534; }
.wmp-status--overdue      { background: var(--wmp-danger-bg);   color: #991b1b; }
.wmp-status--cancelled    { background: #f1f5f9;                color: #475569; }
.wmp-status--rejected     { background: #fdf4ff;                color: #7e22ce; }
.wmp-status--open         { background: var(--wmp-info-bg);     color: #1e40af; }
.wmp-status--closed       { background: var(--wmp-success-bg);  color: #166534; }
.wmp-status--running      { background: var(--wmp-primary-light); color: #4338ca; }
.wmp-status--approved     { background: var(--wmp-success-bg);  color: #166534; }
.wmp-status--draft        { background: #f1f5f9;                color: #475569; }

/* ─── Priority Chips ─────────────────────────────────────────────────────── */
.wmp-priority {
    display: inline-block;
    padding: .2rem .55rem;
    border-radius: var(--wmp-radius-full);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.wmp-priority--low    { background: #dcfce7; color: #166534; }
.wmp-priority--medium { background: var(--wmp-warning-bg); color: #92400e; }
.wmp-priority--high   { background: var(--wmp-danger-bg);  color: #991b1b; }
.wmp-priority--urgent { background: #fdf4ff; color: #7e22ce; }

/* ─── Section Header ─────────────────────────────────────────────────────── */
.wmp-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: .75rem;
    margin-top: 1.5rem;
}
.wmp-section-header h2 { font-size: 15px; font-weight: 700; }

/* ─── Page Header ────────────────────────────────────────────────────────── */
.wmp-page-header {
    padding: 1rem 1rem .5rem;
}
.wmp-page-header h1 { font-size: 20px; font-weight: 800; }

/* ─── Table ──────────────────────────────────────────────────────────────── */
.wmp-table-wrap { overflow-x: auto; border-radius: var(--wmp-radius); }
.wmp-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--wmp-surface);
    font-size: 13px;
}
.wmp-table th {
    background: var(--wmp-bg);
    padding: .75rem 1rem;
    text-align: left;
    font-size: 12px;
    font-weight: 700;
    color: var(--wmp-text-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
    border-bottom: 1px solid var(--wmp-border);
    white-space: nowrap;
}
.wmp-table td {
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--wmp-border);
    vertical-align: middle;
}
.wmp-table tr:last-child td { border-bottom: none; }
.wmp-table tr:hover td { background: rgba(99,102,241,.03); }

/* ─── Pagination ─────────────────────────────────────────────────────────── */
.wmp-pagination {
    display: flex;
    gap: .4rem;
    justify-content: center;
    padding: 1rem 0;
}
.wmp-pagination button {
    min-width: 34px; height: 34px;
    border-radius: var(--wmp-radius);
    border: 1.5px solid var(--wmp-border);
    background: var(--wmp-surface);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--wmp-text-muted);
}
.wmp-pagination button.is-active {
    background: var(--wmp-primary);
    border-color: var(--wmp-primary);
    color: #fff;
}

/* ─── Modal ──────────────────────────────────────────────────────────────── */
.wmp-modal {
    position: fixed;
    inset: 0;
    z-index: 8000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    visibility: hidden;
    opacity: 0;
    transition: opacity var(--wmp-transition), visibility var(--wmp-transition);
}
.wmp-modal.is-open {
    visibility: visible;
    opacity: 1;
}
.wmp-modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(2px);
}
.wmp-modal__box {
    position: relative;
    background: var(--wmp-surface);
    border-radius: var(--wmp-radius-lg) var(--wmp-radius-lg) 0 0;
    width: 100%;
    max-width: 540px;
    max-height: 90dvh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform var(--wmp-transition);
    box-shadow: var(--wmp-shadow-lg);
}
.wmp-modal.is-open .wmp-modal__box { transform: translateY(0); }
.wmp-modal__box--lg { max-width: 680px; }
.wmp-modal__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.25rem 0;
    position: sticky;
    top: 0;
    background: var(--wmp-surface);
    z-index: 1;
}
.wmp-modal__head h2 { font-size: 17px; font-weight: 700; }
.wmp-modal__close {
    background: none; border: none; cursor: pointer;
    font-size: 22px; color: var(--wmp-text-muted); line-height: 1;
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--wmp-radius);
}
.wmp-modal__close:hover { background: var(--wmp-border); }
.wmp-modal__body { padding: 1.25rem; }
.wmp-modal__foot {
    display: flex;
    gap: .75rem;
    justify-content: flex-end;
    padding: .75rem 1.25rem 1.25rem;
    border-top: 1px solid var(--wmp-border);
    position: sticky;
    bottom: 0;
    background: var(--wmp-surface);
}

@media (min-width: 600px) {
    .wmp-modal { align-items: center; padding: 1rem; }
    .wmp-modal__box { border-radius: var(--wmp-radius-lg); transform: scale(.97); }
    .wmp-modal.is-open .wmp-modal__box { transform: scale(1); }
}

/* ─── Overlay ────────────────────────────────────────────────────────────── */
.wmp-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 7500;
    visibility: hidden; opacity: 0;
    transition: var(--wmp-transition);
}
.wmp-overlay.is-visible { visibility: visible; opacity: 1; }

/* ─── Bottom Drawer (task detail) ────────────────────────────────────────── */
.wmp-drawer {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 8500;
    background: var(--wmp-surface);
    border-radius: var(--wmp-radius-xl) var(--wmp-radius-xl) 0 0;
    max-height: 85dvh;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform .35s cubic-bezier(.4,0,.2,1);
    box-shadow: var(--wmp-shadow-lg);
}
.wmp-drawer.is-open { transform: translateY(0); }
.wmp-drawer__handle {
    width: 40px; height: 4px;
    background: var(--wmp-border);
    border-radius: 2px;
    margin: .75rem auto .25rem;
}
.wmp-drawer__head {
    display: flex; align-items: center; justify-content: space-between;
    padding: .5rem 1.25rem .75rem;
    border-bottom: 1px solid var(--wmp-border);
    position: sticky; top: 0; background: var(--wmp-surface); z-index: 1;
}
.wmp-drawer__head h3 { font-size: 16px; font-weight: 700; }
.wmp-drawer__body { padding: 1rem 1.25rem 2rem; }

/* ─── Avatar ─────────────────────────────────────────────────────────────── */
.wmp-avatar {
    width: 38px; height: 38px;
    border-radius: var(--wmp-radius-full);
    background: linear-gradient(135deg, var(--wmp-primary), var(--wmp-secondary));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 700;
    flex-shrink: 0;
}
.wmp-avatar--sm { width: 32px; height: 32px; font-size: 12px; }
.wmp-avatar--lg { width: 72px; height: 72px; font-size: 24px; }

/* ─── Empty State ────────────────────────────────────────────────────────── */
.wmp-empty {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--wmp-text-muted);
}
.wmp-empty__icon { font-size: 40px; margin-bottom: .75rem; }
.wmp-empty h3 { font-size: 16px; font-weight: 700; margin-bottom: .35rem; color: var(--wmp-text); }
.wmp-empty p { font-size: 13px; }

/* ─── Notification Drawer ────────────────────────────────────────────────── */
.wmp-notif-drawer {
    position: fixed;
    top: var(--wmp-header-h); right: 0;
    width: min(340px, 100vw);
    height: calc(100dvh - var(--wmp-header-h));
    background: var(--wmp-surface);
    border-left: 1px solid var(--wmp-border);
    z-index: 7600;
    transform: translateX(100%);
    transition: transform .3s cubic-bezier(.4,0,.2,1);
    overflow-y: auto;
    box-shadow: -4px 0 24px rgba(0,0,0,.1);
}
.wmp-notif-drawer.is-open { transform: translateX(0); }
.wmp-notif-drawer__header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--wmp-border);
    font-weight: 700;
    font-size: 15px;
    position: sticky; top: 0; background: var(--wmp-surface);
}
.wmp-notif-list { padding: .5rem 0; }

.wmp-notif-item {
    display: flex; gap: .75rem;
    padding: .75rem 1.25rem;
    border-bottom: 1px solid var(--wmp-border);
    cursor: pointer;
    transition: background var(--wmp-transition);
}
.wmp-notif-item:hover { background: var(--wmp-bg); }
.wmp-notif-item.unread { background: var(--wmp-primary-light); }
.wmp-notif-item__dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--wmp-primary);
    flex-shrink: 0; margin-top: 5px;
}
.wmp-notif-item__body { flex: 1; min-width: 0; }
.wmp-notif-item__msg { font-size: 13px; line-height: 1.4; }
.wmp-notif-item__time { font-size: 11px; color: var(--wmp-text-muted); margin-top: 2px; }

/* ─── Filter Bar (manager) ───────────────────────────────────────────────── */
.wmp-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    margin-bottom: 1rem;
    align-items: center;
}
.wmp-filter-bar .wmp-search-bar {
    flex: 1; min-width: 180px; margin-bottom: 0;
}

/* ─── Form Grid ──────────────────────────────────────────────────────────── */
.wmp-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.wmp-col-2 { grid-column: span 2; }
@media (max-width: 480px) {
    .wmp-form-grid { grid-template-columns: 1fr; }
    .wmp-col-2 { grid-column: unset; }
}