:root {
    --bg: #0f172a;
    --panel: #1e293b;
    --panel-2: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #3b82f6;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --border: #334155;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #0b1220;
    color: var(--text);
    line-height: 1.5;
}

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

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.brand a {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.main-nav { display: flex; gap: 14px; align-items: center; }
.main-nav a { color: var(--muted); padding: 6px 10px; border-radius: 6px; }
.main-nav a:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 24px; }

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 12px;
    flex-wrap: wrap;
}
.page-header h1 { margin: 0; font-size: 1.8rem; }

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 24px 0 12px;
}

.muted { color: var(--muted); }
.empty { color: var(--muted); padding: 18px; text-align: center; background: var(--panel); border-radius: var(--radius); }

.btn {
    display: inline-block;
    padding: 7px 14px;
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.92rem;
    text-decoration: none;
    transition: background 0.15s;
}
.btn:hover { background: #475569; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn-primary:hover { background: #2563eb; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: white; }
.btn-sm { padding: 4px 10px; font-size: 0.82rem; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 28px; }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; text-align: center; }
.stat-value { font-size: 2rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
.stat-pending .stat-value { color: var(--warning); }
.stat-overdue .stat-value { color: var(--danger); }
.stat-escalated .stat-value { color: var(--danger); }
.stat-closed .stat-value { color: var(--success); }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.card {
    display: block;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    color: var(--text);
    transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; font-size: 0.85rem; }

.table-wrap { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--panel-2); font-size: 0.82rem; text-transform: uppercase; color: var(--muted); }
.data-table tr:last-child td { border-bottom: none; }
.data-table .actions { display: flex; gap: 6px; align-items: center; }
.data-table .actions form { display: inline; margin: 0; }

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.72rem;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; max-width: 720px; }
.form-row { margin-bottom: 14px; display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 0.88rem; color: var(--muted); }
.form-row input, .form-row select, .form-row textarea {
    background: #0b1220;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 9px 11px;
    font-size: 0.95rem;
    font-family: inherit;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.form-row input[type="date"], .form-row input[type="time"] {
    color-scheme: dark;
    min-height: 38px;
}
.form-row-inline { flex-direction: row; gap: 14px; align-items: flex-start; flex-wrap: wrap; }
.form-row-inline > div { display: flex; flex-direction: column; gap: 6px; flex: 1; min-width: 180px; }
.form-row-inline small { color: var(--muted); font-size: 0.78rem; }
.form-actions { display: flex; gap: 10px; margin-top: 12px; }

.collaborator-row { display: flex; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.collaborator-row input { flex: 1; min-width: 160px; }

.form-inline { display: flex; gap: 8px; margin: 14px 0; flex-wrap: wrap; }
.form-inline input { background: #0b1220; color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; }

.meta-list {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 8px 18px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-bottom: 20px;
}
.meta-list dt { color: var(--muted); font-size: 0.88rem; }
.meta-list dd { margin: 0; }

.action-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.panel h3 { margin-top: 0; }
.panel textarea, .panel input {
    width: 100%;
    background: #0b1220;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    margin: 6px 0;
    font-family: inherit;
}
.panel label { color: var(--muted); font-size: 0.85rem; }

.comment-list { list-style: none; padding: 0; margin: 0; }
.comment { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 8px; }
.comment-head { font-size: 0.85rem; margin-bottom: 4px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.comment-body { white-space: pre-wrap; }

.footer { text-align: center; padding: 30px 0 20px; color: var(--muted); }

h2 { margin-top: 32px; margin-bottom: 12px; }

/* ── Sidebar layout ── */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    flex-shrink: 0;
    background: var(--panel);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 18px 20px 12px;
}
.sidebar-brand a {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    padding: 0 10px;
    gap: 2px;
}

.sidebar-nav-bottom {
    margin-top: auto;
    padding-bottom: 16px;
}

.sidebar-divider {
    height: 1px;
    background: var(--border);
    margin: 10px 10px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 7px;
    color: var(--muted);
    font-size: 0.9rem;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}
.nav-item:hover {
    background: var(--panel-2);
    color: var(--text);
    text-decoration: none;
}
.nav-item.nav-new {
    background: var(--accent);
    color: white;
    margin: 4px 0;
}
.nav-item.nav-new:hover {
    background: #2563eb;
}
.nav-item.nav-logout {
    color: var(--muted);
}
.nav-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

/* ── Main content ── */
.main-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 24px 28px;
}

.content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.content-header h1 {
    margin: 0;
    font-size: 1.6rem;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}
.page-header h1 { margin: 0; font-size: 1.8rem; }

/* ── Task cards ── */
.task-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}
.task-card {
    display: block;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text);
    text-decoration: none;
    transition: border-color 0.15s, transform 0.15s;
    cursor: pointer;
}
.task-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    text-decoration: none;
}
.task-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}
.task-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.3;
}
.task-card-project {
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 6px;
}
.task-card-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.78rem;
    color: var(--muted);
    flex-wrap: wrap;
}
.task-card-due {
    display: flex;
    align-items: center;
    gap: 4px;
}
.task-card-due.overdue { color: var(--danger); }
.task-card-due.soon { color: var(--warning); }

/* ── Project cards ── */
.project-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}
.project-card {
    display: block;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text);
    text-decoration: none;
    transition: border-color 0.15s, transform 0.15s;
}
.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    text-decoration: none;
}
.project-card-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.project-card-client {
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 8px;
}

/* ── Pagination ── */
.pagination {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    font-size: 0.88rem;
    color: var(--muted);
}

.stat-total .stat-value { color: var(--accent); }

.user-stats-table {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-x: auto;
}