/* Student Kanban Board — Linear-inspired design */
*, *::before, *::after { box-sizing: border-box; }

/* ─── Root Variables ──────────────────────────────── */
.sk-app {
    --sk-bg:         #f7f8fa;
    --sk-surface:    #ffffff;
    --sk-border:     #e5e7eb;
    --sk-border-2:   #d1d5db;
    --sk-text:       #111827;
    --sk-muted:      #6b7280;
    --sk-subtle:     #9ca3af;
    --sk-accent:     #5e6ad2;
    --sk-accent-h:   #4f5bbf;
    --sk-danger:     #ef4444;
    --sk-danger-h:   #dc2626;
    --sk-green:      #22c55e;
    --sk-yellow:     #f59e0b;
    --sk-orange:     #f97316;
    --sk-radius:     8px;
    --sk-radius-sm:  5px;
    --sk-shadow:     0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --sk-shadow-md:  0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
    --sk-font:       -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;

    font-family: var(--sk-font);
    background:  var(--sk-bg);
    min-height:  100vh;
    color:       var(--sk-text);
    padding:     0;
    margin:      0;
    -webkit-font-smoothing: antialiased;
}

/* Reset WP admin styles inside our app */
.sk-app h1, .sk-app h2, .sk-app p,
.sk-app input, .sk-app select, .sk-app textarea {
    font-family: var(--sk-font);
    margin: 0;
}
.sk-app a { color: inherit; text-decoration: none; }
.sk-app button { cursor: pointer; font-family: var(--sk-font); }

/* ─── Header ──────────────────────────────────────── */
.sk-header {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    padding:         14px 24px;
    background:      var(--sk-surface);
    border-bottom:   1px solid var(--sk-border);
    position:        sticky;
    top:             0;
    z-index:         100;
}
.sk-header-left  { display: flex; align-items: center; gap: 10px; }
.sk-header-right { display: flex; align-items: center; gap: 8px; }
.sk-logo         { display: flex; align-items: center; flex-shrink: 0; }
.sk-title        {
    font-size:   15px;
    font-weight: 600;
    color:       var(--sk-text);
    line-height: 1;
    margin:      0;
}

/* ─── Week Nav ────────────────────────────────────── */
.sk-week-nav {
    display:     flex;
    align-items: center;
    gap:         4px;
    background:  var(--sk-bg);
    border:      1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    padding:     2px 4px;
}
.sk-week-label {
    font-size:   13px;
    font-weight: 500;
    color:       var(--sk-muted);
    padding:     0 8px;
    white-space: nowrap;
}

/* ─── Buttons ─────────────────────────────────────── */
.sk-btn {
    display:        inline-flex;
    align-items:    center;
    gap:            5px;
    padding:        7px 14px;
    border-radius:  var(--sk-radius-sm);
    font-size:      13px;
    font-weight:    500;
    line-height:    1;
    border:         none;
    transition:     background .12s, color .12s, box-shadow .12s;
    white-space:    nowrap;
    text-decoration: none;
}
.sk-btn-sm    { padding: 5px 10px; font-size: 12px; }
.sk-btn-primary {
    background:  var(--sk-accent);
    color:       #fff;
}
.sk-btn-primary:hover { background: var(--sk-accent-h); color: #fff; }
.sk-btn-ghost {
    background:  transparent;
    color:       var(--sk-muted);
    border:      1px solid transparent;
}
.sk-btn-ghost:hover {
    background:  var(--sk-bg);
    color:       var(--sk-text);
    border-color: var(--sk-border);
}
.sk-btn-danger { background: var(--sk-danger); color: #fff; }
.sk-btn-danger:hover { background: var(--sk-danger-h); color: #fff; }

.sk-icon-btn {
    display:      inline-flex;
    align-items:  center;
    justify-content: center;
    width:        26px;
    height:       26px;
    border-radius: var(--sk-radius-sm);
    border:       none;
    background:   transparent;
    color:        var(--sk-subtle);
    transition:   background .12s, color .12s;
    flex-shrink:  0;
    padding:      0;
}
.sk-icon-btn:hover { background: var(--sk-bg); color: var(--sk-text); }

/* ─── Board ───────────────────────────────────────── */
.sk-board {
    display:    grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap:        16px;
    padding:    20px 24px 40px;
    min-height: calc(100vh - 60px);
    align-items: start;
}
@media (max-width: 1100px) { .sk-board { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px)  { .sk-board { grid-template-columns: 1fr; } }

/* ─── Column ──────────────────────────────────────── */
.sk-column {
    display:       flex;
    flex-direction: column;
    gap:           8px;
}
.sk-column-header {
    display:     flex;
    align-items: center;
    gap:         7px;
    padding:     4px 2px 8px;
}
.sk-column-name {
    font-size:   12px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color:       var(--sk-muted);
    flex: 1;
}
.sk-count-badge {
    display:      inline-flex;
    align-items:  center;
    justify-content: center;
    min-width:    18px;
    height:       18px;
    padding:      0 5px;
    background:   var(--sk-border);
    border-radius: 20px;
    font-size:    11px;
    font-weight:  600;
    color:        var(--sk-muted);
    line-height:  1;
}

/* Status dots */
.sk-status-dot {
    width:  8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.sk-dot-todo        { background: #d1d5db; }
.sk-dot-in_progress { background: #5e6ad2; }
.sk-dot-in_review   { background: #f59e0b; }
.sk-dot-done        { background: #22c55e; }

/* ─── Cards list ──────────────────────────────────── */
.sk-cards-list {
    display:       flex;
    flex-direction: column;
    gap:           8px;
    min-height:    60px;
    border-radius: var(--sk-radius);
    transition:    background .12s;
    padding:       2px;
}
.sk-cards-list.sk-drag-over {
    background:  rgba(94, 106, 210, .06);
    outline:     2px dashed rgba(94, 106, 210, .3);
    outline-offset: -2px;
}

/* ─── Card ────────────────────────────────────────── */
.sk-card {
    background:    var(--sk-surface);
    border:        1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    padding:       12px 14px;
    box-shadow:    var(--sk-shadow);
    transition:    box-shadow .12s, border-color .12s, opacity .12s;
    user-select:   none;
}
.sk-card:hover {
    box-shadow:   var(--sk-shadow-md);
    border-color: var(--sk-border-2);
}
.sk-card[draggable="true"] { cursor: grab; }
.sk-card[draggable="true"]:active { cursor: grabbing; }
.sk-card.sk-dragging { opacity: .35; }

.sk-card-top {
    display:     flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 7px;
    min-height:  20px;
}
.sk-card-actions {
    display:  flex;
    gap:      2px;
    opacity:  0;
    transition: opacity .12s;
}
.sk-card:hover .sk-card-actions { opacity: 1; }

.sk-card-title {
    font-size:   14px;
    font-weight: 500;
    color:       var(--sk-text);
    line-height: 1.4;
    margin:      0 0 6px;
}
.sk-card-desc {
    font-size:  12.5px;
    color:      var(--sk-muted);
    line-height: 1.5;
    margin:     0 0 10px;
}
.sk-card-footer {
    display:     flex;
    align-items: center;
    gap:         7px;
    margin-top:  10px;
}
.sk-assignee-name {
    font-size:  11.5px;
    color:      var(--sk-muted);
    font-weight: 500;
    flex: 1;
}

/* ─── Priority dot (card top-left) ───────────────── */
.sk-priority-dot {
    width:  7px;
    height: 7px;
    border-radius: 2px;
    flex-shrink: 0;
}
.sk-priority-low    { background: #d1d5db; }
.sk-priority-medium { background: #5e6ad2; }
.sk-priority-high   { background: #f59e0b; }
.sk-priority-urgent { background: #ef4444; }

/* ─── Priority badge ─────────────────────────────── */
.sk-priority-badge {
    font-size:    10.5px;
    font-weight:  600;
    padding:      2px 7px;
    border-radius: 20px;
    letter-spacing: .02em;
}
.sk-badge-low    { background: #f3f4f6; color: #6b7280; }
.sk-badge-medium { background: #eef0ff; color: #5e6ad2; }
.sk-badge-high   { background: #fef3c7; color: #d97706; }
.sk-badge-urgent { background: #fef2f2; color: #ef4444; }

/* ─── Avatar ──────────────────────────────────────── */
.sk-avatar {
    display:         flex;
    align-items:     center;
    justify-content: center;
    width:           24px;
    height:          24px;
    border-radius:   50%;
    background:      var(--sk-accent);
    color:           #fff;
    font-size:       10px;
    font-weight:     700;
    text-transform:  uppercase;
    flex-shrink:     0;
    letter-spacing:  .02em;
}
.sk-avatar-empty { background: #e5e7eb; color: var(--sk-subtle); }
.sk-avatar-md { width: 36px; height: 36px; font-size: 13px; }

/* ─── Modal ───────────────────────────────────────── */
.sk-overlay {
    position:   fixed;
    inset:      0;
    background: rgba(0, 0, 0, .4);
    z-index:    9999;
    display:    flex;
    align-items: center;
    justify-content: center;
    padding:    20px;
    animation:  sk-fade-in .15s ease;
}
.sk-overlay[hidden] { display: none !important; }
@keyframes sk-fade-in { from { opacity: 0; } to { opacity: 1; } }

.sk-modal {
    background:    var(--sk-surface);
    border-radius: 12px;
    box-shadow:    0 20px 60px rgba(0,0,0,.2), 0 4px 16px rgba(0,0,0,.1);
    width:         100%;
    max-width:     480px;
    animation:     sk-slide-up .15s ease;
    overflow:      hidden;
}
.sk-modal-sm { max-width: 340px; }
@keyframes sk-slide-up {
    from { transform: translateY(12px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

.sk-modal-header {
    display:      flex;
    align-items:  center;
    justify-content: space-between;
    padding:      18px 20px 14px;
    border-bottom: 1px solid var(--sk-border);
}
.sk-modal-title {
    font-size:   15px;
    font-weight: 600;
    color:       var(--sk-text);
    margin:      0;
    padding:     0;
    border:      none;
    background:  none;
}
.sk-modal-body   { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.sk-modal-footer {
    display:      flex;
    gap:          8px;
    justify-content: flex-end;
    padding:      14px 20px 20px;
    border-top:   1px solid var(--sk-border);
}

/* ─── Form Elements ───────────────────────────────── */
.sk-field { display: flex; flex-direction: column; gap: 5px; }
.sk-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sk-label {
    font-size:   12px;
    font-weight: 600;
    color:       var(--sk-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.sk-required { color: var(--sk-danger); }
.sk-input, .sk-select, .sk-textarea {
    width:         100%;
    padding:       8px 11px;
    border:        1px solid var(--sk-border);
    border-radius: var(--sk-radius-sm);
    font-size:     13.5px;
    font-family:   var(--sk-font);
    color:         var(--sk-text);
    background:    var(--sk-surface);
    outline:       none;
    transition:    border-color .12s, box-shadow .12s;
    -webkit-appearance: none;
}
.sk-input:focus, .sk-select:focus, .sk-textarea:focus {
    border-color: var(--sk-accent);
    box-shadow:   0 0 0 3px rgba(94, 106, 210, .15);
}
.sk-textarea { resize: vertical; min-height: 72px; line-height: 1.5; }
.sk-help {
    font-size:  12px;
    color:      var(--sk-subtle);
    margin:     4px 0 0;
    line-height: 1.5;
}

/* ─── Notice ──────────────────────────────────────── */
.sk-notice {
    padding:      10px 16px;
    border-radius: var(--sk-radius-sm);
    font-size:    13px;
    font-weight:  500;
    margin:       0 24px 16px;
}
.sk-notice-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.sk-notice-error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ─── Users page ──────────────────────────────────── */
.sk-users-layout {
    display:               grid;
    grid-template-columns: 1fr 340px;
    gap:                   24px;
    padding:               24px;
    align-items:           start;
}
@media (max-width: 700px) { .sk-users-layout { grid-template-columns: 1fr; } }

.sk-panel {
    background:    var(--sk-surface);
    border:        1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    overflow:      hidden;
}
.sk-panel-header {
    display:       flex;
    align-items:   center;
    gap:           8px;
    padding:       14px 18px;
    border-bottom: 1px solid var(--sk-border);
    background:    #fafafa;
}
.sk-panel-title {
    font-size:   13px;
    font-weight: 600;
    color:       var(--sk-text);
    flex:        1;
}
.sk-users-list  { padding: 8px; display: flex; flex-direction: column; gap: 2px; }
.sk-user-row {
    display:       flex;
    align-items:   center;
    gap:           12px;
    padding:       10px 12px;
    border-radius: var(--sk-radius-sm);
    transition:    background .1s;
}
.sk-user-row:hover { background: var(--sk-bg); }
.sk-user-meta { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.sk-user-name  { font-size: 13.5px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sk-user-email { font-size: 12px; color: var(--sk-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sk-role-badge {
    font-size:    11px;
    font-weight:  600;
    padding:      2px 8px;
    background:   #eef0ff;
    color:        var(--sk-accent);
    border-radius: 20px;
    text-transform: capitalize;
    flex-shrink:  0;
}
.sk-panel-form .sk-modal-body,
.sk-panel-form .sk-form { padding: 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.sk-form { display: flex; flex-direction: column; gap: 12px; }

/* ─── Read-only banner ────────────────────────────── */
.sk-readonly-banner {
    display:     flex;
    align-items: center;
    gap:         7px;
    font-size:   12.5px;
    color:       #92400e;
    background:  #fffbeb;
    border:      1px solid #fde68a;
    border-radius: var(--sk-radius-sm);
    padding:     8px 16px;
    margin:      12px 24px 0;
}
.sk-login-wall {
    padding:    40px;
    text-align: center;
    font-size:  15px;
    color:      var(--sk-muted);
}
.sk-login-wall a { color: var(--sk-accent); text-decoration: underline; }

/* ─── Confirm modal text ──────────────────────────── */
.sk-confirm-title { font-size: 15px; font-weight: 600; color: var(--sk-text); margin: 0 0 6px; }
.sk-confirm-sub   { font-size: 13px; color: var(--sk-muted); margin: 0; }

/* ─── Empty state ─────────────────────────────────── */
.sk-empty { font-size: 13px; color: var(--sk-subtle); padding: 20px 16px; text-align: center; }

/* ─── WP Admin overrides ──────────────────────────── */
.wp-admin .sk-app { padding: 0; }
.wp-admin #wpcontent { padding-left: 0; }
.wp-admin #wpbody-content { padding: 0; }
.wp-admin .sk-header { top: 32px; } /* below WP admin bar */

/* Ensure WP admin notices don't bleed in */
.wrap > .sk-app { margin-top: 0; }