/* ========== Reset & Base ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --success: #22c55e;
    --success-bg: #dcfce7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --info: #3b82f6;
    --info-bg: #dbeafe;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 20px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* ========== Navbar ========== */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary) !important;
    letter-spacing: -.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-size: .875rem;
    color: var(--text-secondary);
    transition: color .15s;
}
.nav-link:hover { color: var(--primary); }

.nav-user-group {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 4px 2px 12px;
    border: 1.5px solid var(--border);
    border-radius: 20px;
    background: var(--bg);
}

.nav-user-name {
    font-size: .8rem;
    color: var(--text);
    font-weight: 500;
}

.nav-logout-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    color: var(--text-secondary) !important;
    transition: all .15s;
    flex-shrink: 0;
}
.nav-logout-icon:hover {
    color: #fff !important;
    background: var(--danger);
}

.nav-logout-icon svg {
    width: 13px;
    height: 13px;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: .9; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: .9; }

.btn-outline { background: #fff; border-color: var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }

.btn-sm { padding: 6px 12px; font-size: .8rem; }
.btn-block { width: 100%; }

/* ========== Flash Messages ========== */
.flash-messages { margin-top: 16px; }

.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    font-size: .875rem;
}

.flash-success { background: var(--success-bg); color: #166534; border: 1px solid #86efac; }
.flash-danger { background: var(--danger-bg); color: #991b1b; border: 1px solid #fca5a5; }
.flash-warning { background: var(--warning-bg); color: #92400e; border: 1px solid #fcd34d; }
.flash-info { background: var(--info-bg); color: #1e40af; border: 1px solid #93c5fd; }

/* ========== Page ========== */
.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 8px;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: .9rem;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin: 24px 0 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 28px 0 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.hint {
    color: var(--text-secondary);
    font-size: .85rem;
}

.link {
    color: var(--primary);
    text-decoration: underline;
}

/* ========== Login Page ========== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
}

.login-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    margin-bottom: 4px;
}

.login-reset-title {
    font-size: 1.3rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 24px;
}

.login-brand {
    font-size: 2.88rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
}

.login-msg {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: .85rem;
    min-height: 1.3em;
}

.msg-success { color: var(--success); }
.msg-danger { color: var(--danger); }
.msg-warning { color: var(--warning); }
.msg-info { color: var(--info); }

.login-form .form-group {
    margin-bottom: 16px;
}

/* ========== Forms ========== */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: .875rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="datetime-local"],
.form-group input[type="email"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .9rem;
    font-family: inherit;
    transition: border-color .15s;
    background: #fff;
    color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.form-group textarea { resize: vertical; min-height: 70px; }

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.form-check label {
    margin-bottom: 0;
    font-weight: 400;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    justify-content: flex-end;
}

/* ========== Modal / Dialog ========== */
.modal {
    border: none;
    border-radius: 12px;
    padding: 0;
    box-shadow: var(--shadow-lg);
    max-width: 480px;
    width: 90%;
    margin: auto;
    position: fixed;
    top: 0; left: 0; bottom: 0; right: 0;
}

.modal::backdrop {
    background: rgba(0,0,0,.4);
}

.modal-content {
    padding: 28px;
}

.modal-content h2 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

/* ========== Confirm Dialog ========== */
.confirm-modal {
    max-width: 400px;
}
.confirm-msg {
    font-size: .95rem;
    color: var(--text);
    margin-bottom: 24px;
    line-height: 1.6;
}

/* ========== Tables ========== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin: 16px 0;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: .875rem;
}

.data-table th {
    background: #f1f5f9;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .5px;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f8fafc; }

/* ========== Badges ========== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 500;
}

.badge-lg { padding: 5px 14px; font-size: .85rem; }
.badge-sm { padding: 2px 8px; font-size: .7rem; }

.badge-admin { background: #ede9fe; color: #6d28d9; }
.badge-user { background: #e0e7ff; color: #3730a3; }
.badge-active { background: var(--info-bg); color: #1e40af; }
.badge-completed { background: var(--success-bg); color: #166534; }
.badge-cancelled { background: var(--danger-bg); color: #991b1b; }

/* ========== Cards ========== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.card-title { font-size: 1rem; margin-bottom: 12px; }

.card-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.card-item {
    display: block;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    min-width: 200px;
    flex: 1;
    transition: box-shadow .15s, border-color .15s;
    text-decoration: none;
    color: var(--text);
}
.card-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.card-item-title {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: .95rem;
}

.card-item-meta {
    font-size: .8rem;
    color: var(--text-secondary);
}

.card-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.card-item-left {
    min-width: 0;
}

.card-item-stats {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    padding-top: 5px;
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: .75rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    white-space: nowrap;
}

.stat-pill-rate {
    color: var(--success);
    border-color: var(--success);
}

/* ========== Stats ========== */
.stats-grid {
    display: flex;
    gap: 16px;
    margin: 16px 0;
}

.stat-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    flex: 1;
    min-width: 150px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: .85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ========== Task Cards ========== */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 12px 0;
}

.task-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--info);
    border-radius: var(--radius);
    padding: 14px 18px;
    cursor: pointer;
    transition: box-shadow .15s, transform .1s;
}
.task-card:hover {
    box-shadow: var(--shadow);
    transform: translateX(2px);
}

.task-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.task-card-name {
    font-weight: 600;
    font-size: .95rem;
}

.subtask-count {
    color: var(--primary);
    font-weight: 500;
}

.subtask-indicator { color: var(--text-secondary); margin-right: 4px; }

.task-card-desc {
    color: var(--text-secondary);
    font-size: .8rem;
    margin-top: 4px;
}

.task-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    font-size: .8rem;
    color: var(--text-secondary);
    margin-top: 6px;
}

.task-deadline-meta {
    margin-left: 10px;
}

.task-status-completed { border-left-color: var(--success); opacity: .75; }
.task-status-cancelled { border-left-color: var(--danger); opacity: .6; text-decoration: line-through; }
.task-overdue { border-left-color: var(--danger); background: #fff5f5; }

/* ========== Task Detail ========== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 18px 0 12px;
    font-size: .85rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span:not(.breadcrumb-sep) {
    color: var(--text);
    font-weight: 500;
}

.breadcrumb-sep {
    color: var(--text-secondary);
    user-select: none;
}

.task-detail-header {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.task-detail-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.task-detail-title {
    font-size: 1.35rem;
}

.task-detail-desc {
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-size: .9rem;
    line-height: 1.6;
    white-space: pre-wrap;
}

.task-checked-items {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.checked-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 4px;
    background: var(--success-bg);
    color: #166534;
    font-size: .8rem;
    font-weight: 500;
}

.task-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: .85rem;
    color: var(--text-secondary);
}

.task-actions {
    margin-top: 14px;
    display: flex;
    gap: 10px;
}

.task-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.task-detail-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.section-header h2 { font-size: 1rem; }

/* ========== Subtasks ========== */
.subtask-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.subtask-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--info);
    border-radius: 6px;
    cursor: pointer;
    font-size: .875rem;
    transition: background .15s;
}
.subtask-item:hover { background: var(--bg); }

.subtask-name { flex: 1; font-weight: 500; }
.subtask-deadline { font-size: .8rem; color: var(--text-secondary); }

/* ========== Changes ========== */
.task-detail-full-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 20px;
    box-shadow: var(--shadow);
}

.task-detail-full-section h2 {
    font-size: 1rem;
    margin-bottom: 12px;
}

.changes-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.change-item {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px 0 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: .85rem;
}

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

.change-user {
    font-weight: 600;
    color: var(--text);
}

.change-action {
    color: var(--text-secondary);
}

.change-detail {
    color: var(--primary);
}

.change-time {
    color: var(--text-secondary);
    font-size: .75rem;
    margin-left: auto;
}

/* ========== Comments ========== */
.comment-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
    max-height: 400px;
    overflow-y: auto;
}

.comment-item {
    padding: 6px 0 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: .85rem;
    line-height: 1.5;
}

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

.comment-time {
    font-size: .7rem;
    color: var(--text-secondary);
    margin-left: 8px;
}

.comment-form {
    margin-top: 12px;
    display: flex;
    gap: 8px;
}
.comment-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .875rem;
    font-family: inherit;
    background: #fff;
    color: var(--text);
}
.comment-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

/* ========== Display URL ========== */
.display-url-box {
    display: flex;
    gap: 8px;
    margin: 8px 0;
}

.display-url-box input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .85rem;
    background: var(--bg);
}

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-secondary);
}

.empty-text {
    color: var(--text-secondary);
    font-size: .875rem;
    padding: 12px 0;
}

/* ========== Error Page ========== */
.error-page {
    text-align: center;
    padding: 100px 20px;
}

.error-code {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.error-message {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin: 16px 0 32px;
}

/* ========== Search ========== */
.page-header-right {
    display: flex;
    align-items: center;
}

.search-bar {
    margin: 0 0 20px;
}

.search-form {
    display: flex;
    align-items: stretch;
    gap: 0;
    max-width: 520px;
}

.search-input {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: .9rem;
    font-family: inherit;
    background: #fff;
    color: var(--text);
    outline: none;
    transition: border-color .15s;
    box-sizing: border-box;
}

.search-input:focus {
    border-color: var(--primary);
}

.search-form:focus-within .search-input {
    border-color: var(--primary);
}

.search-form:focus-within .search-btn {
    border-color: var(--primary);
    color: var(--primary);
}

.search-form-sm {
    width: auto;
}

.search-input-sm {
    flex: none;
    width: 120px;
    padding: 8px 12px;
    font-size: .875rem;
    height: 40px;
    border-width: 1px;
}

.search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-left: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    background: #fff;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all .15s;
    box-sizing: border-box;
}

.search-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.search-form:hover .search-input {
    border-color: var(--primary);
}

.search-form:hover .search-btn {
    border-color: var(--primary);
}

.search-btn-sm {
    padding: 8px 12px;
    height: 40px;
    border-width: 1px;
}

.search-clear {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 8px;
    padding: 4px;
    color: var(--text-secondary);
    transition: color .15s;
}

.search-clear:hover {
    color: var(--danger);
}

/* ========== Action Cell ========== */
.action-cell {
    display: flex;
    flex-wrap: nowrap;
    gap: 6px;
    align-items: center;
    justify-content: center;
}

.action-cell form {
    display: inline;
}

/* ========== Fixed Column Widths ========== */
.col-action-users {
    width: 200px;
}
.col-action-projects {
    width: 144px;
}
.col-id { width: 50px; }
.col-role { width: 110px; }
.col-display { width: 60px; }
.col-level { width: 90px; }
.col-comment { width: 70px; }
.col-date { width: 150px; white-space: nowrap; }
.col-phone { width: 140px; }

/* Center-align both th and td for these columns */
.data-table th.col-action-users,
.data-table td.col-action-users,
.data-table th.col-action-projects,
.data-table td.col-action-projects,
.data-table th.col-id,
.data-table td.col-id,
.data-table th.col-role,
.data-table td.col-role,
.data-table th.col-display,
.data-table td.col-display,
.data-table th.col-level,
.data-table td.col-level,
.data-table th.col-comment,
.data-table td.col-comment,
.data-table th.col-date,
.data-table td.col-date {
    text-align: center;
}

/* ========== Input Copy Group ========== */
.input-copy-group {
    display: flex;
    gap: 6px;
}

.input-copy-group input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .9rem;
    font-family: monospace;
    background: var(--bg);
    color: var(--text);
}

.input-copy-group input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ========== User Select Grid ========== */
.user-select-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.user-select-card {
    display: flex;
    align-items: center;
    padding: 5px 12px;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all .15s;
    background: #fff;
    user-select: none;
    font-size: .85rem;
    color: var(--text-secondary);
}

.user-select-card:hover {
    border-color: #a5b4fc;
    color: var(--text);
}

.user-select-card.selected {
    border-color: var(--primary);
    background: #eef2ff;
    color: var(--primary);
    font-weight: 600;
}

.user-select-card input[type="radio"] {
    display: none;
}

.user-select-multi .user-select-card input[type="checkbox"] {
    display: none;
}

/* ========== Quick Actions ========== */
.quick-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
}

/* ========== DateTime Split ========== */
.datetime-split {
    display: flex;
    gap: 8px;
}

.datetime-split input[type="date"] {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .9rem;
    font-family: inherit;
    background: #fff;
    color: var(--text);
}

.datetime-split input[type="time"] {
    width: 120px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .9rem;
    font-family: inherit;
    background: #fff;
    color: var(--text);
}

.datetime-split input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

/* ========== Password Toggle ========== */
.input-password-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-password-group input {
    width: 100%;
    padding: 10px 40px 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .9rem;
    font-family: inherit;
    background: #fff;
    color: var(--text);
    transition: border-color .15s;
}

.input-password-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.pwd-toggle {
    position: absolute;
    right: 4px;
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
}

.pwd-toggle:hover {
    color: var(--text);
    background: var(--bg);
}

.pwd-toggle::after {
    content: '👁';
    font-size: 1rem;
    line-height: 1;
}

.pwd-toggle.showing::after {
    content: '🙈';
}

/* ========== Checkbox Group ========== */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.checkbox-group .form-check {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all .15s;
    user-select: none;
}

.checkbox-group .form-check:hover {
    border-color: var(--primary);
    background: #f8f8ff;
}

.checkbox-group .form-check input[type="checkbox"] {
    margin: 0;
}

.checkbox-group .form-check input[type="checkbox"]:checked + span {
    color: var(--primary);
    font-weight: 600;
}

/* ========== Status Tabs ========== */
.status-tabs {
    display: flex;
    gap: 4px;
    margin: 4px 0 14px;
    flex-wrap: wrap;
}

.status-tab {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: .85rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all .15s;
    background: #fff;
    cursor: pointer;
}

.status-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.status-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    font-weight: 500;
}

/* ========== Pagination ========== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 24px 0;
    font-size: .875rem;
}

.page-link {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--primary);
    text-decoration: none;
    transition: all .15s;
}

.page-link:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.page-link-disabled {
    opacity: .4;
    cursor: default;
}

.page-info {
    color: var(--text-secondary);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .task-detail-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 10px;
        font-size: .8rem;
    }

    .page-title { font-size: 1.25rem; }
}