:root {
  --bg: #0f1117;
  --surface: #1a1d2e;
  --surface2: #252840;
  --border: #2d3154;
  --text: #e8eaf0;
  --text-muted: #8b90b0;
  --primary: #5c6bc0;
  --primary-hover: #7986cb;
  --danger: #ef5350;
  --success: #66bb6a;
  --warn: #ffa726;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--primary-hover); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Navbar */
.navbar { background: var(--surface); border-bottom: 1px solid var(--border); padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 56px; }
.nav-brand .logo-link { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 16px; }
.logo-mark { background: var(--primary); color: #fff; width: 28px; height: 28px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-link { color: var(--text-muted); padding: 6px 12px; border-radius: var(--radius); font-size: 14px; transition: background 0.15s; }
.nav-link:hover { background: var(--surface2); color: var(--text); text-decoration: none; }
.nav-user { background: var(--surface2); }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 32px 24px; }
.container-narrow { max-width: 640px; }

/* Page header */
.page-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 28px; gap: 16px; }
.page-header h1 { font-size: 24px; font-weight: 700; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius); font-size: 14px; font-weight: 500; cursor: pointer; border: none; transition: background 0.15s, opacity 0.15s; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); text-decoration: none; color: #fff; }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); text-decoration: none; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { background: none; border: none; cursor: pointer; color: var(--text-muted); padding: 2px 6px; border-radius: 4px; font-size: 12px; }
.btn-delete:hover { color: var(--danger); background: rgba(239,83,80,0.1); }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 12px; color: var(--text); font-size: 14px;
  transition: border-color 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; }
.form-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }
.card-form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.card-form h3 { font-size: 16px; margin-bottom: 16px; color: var(--text-muted); }

/* Alerts */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 14px; }
.alert-error { background: rgba(239,83,80,0.15); color: #ef9a9a; border: 1px solid rgba(239,83,80,0.3); }

/* Login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-box { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 100%; max-width: 400px; box-shadow: var(--shadow); }
.login-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; justify-content: center; }
.login-logo .logo-mark { width: 40px; height: 40px; font-size: 20px; border-radius: 10px; }
.login-logo .logo-text { font-size: 20px; font-weight: 700; }

/* Project grid */
.project-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.project-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: border-color 0.15s, box-shadow 0.15s; }
.project-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.project-name { font-size: 16px; font-weight: 600; color: var(--text); display: block; margin-bottom: 8px; }
.project-name:hover { text-decoration: none; color: var(--primary-hover); }
.project-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.project-meta { display: flex; align-items: center; gap: 10px; }
.task-count { font-size: 12px; color: var(--text-muted); }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 100px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.badge-active, .badge-open { background: rgba(102,187,106,0.15); color: #a5d6a7; }
.badge-archived, .badge-closed { background: rgba(139,144,176,0.15); color: var(--text-muted); }
.badge-admin { background: rgba(92,107,192,0.2); color: #9fa8da; }
.badge-member { background: rgba(139,144,176,0.1); color: var(--text-muted); }

/* Kanban */
.kanban-board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 40px; }
.kanban-col { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); min-height: 400px; display: flex; flex-direction: column; }
.kanban-col-header { padding: 14px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.col-title { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); }
.col-count { background: var(--surface2); color: var(--text-muted); font-size: 11px; padding: 2px 7px; border-radius: 100px; }
.kanban-cards { padding: 12px; flex: 1; display: flex; flex-direction: column; gap: 8px; min-height: 60px; }
.kanban-card { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; cursor: grab; transition: box-shadow 0.15s, border-color 0.15s; }
.kanban-card:hover { box-shadow: var(--shadow); border-color: var(--primary); }
.kanban-card:active { cursor: grabbing; }
.card-type { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.type-bug { color: #ef9a9a; }
.type-task { color: #90caf9; }
.type-story { color: #a5d6a7; }
.type-milestone { color: #ffe082; }
.card-title { font-size: 13px; font-weight: 500; line-height: 1.4; margin-bottom: 8px; }
.card-assignee { font-size: 11px; color: var(--text-muted); margin-bottom: 4px; }
.card-due { font-size: 11px; color: var(--warn); }
.card-actions { display: flex; justify-content: flex-end; margin-top: 8px; }
.priority-high { border-left: 3px solid var(--danger); }
.priority-medium { border-left: 3px solid var(--warn); }
.priority-low { border-left: 3px solid var(--success); }

/* Milestones */
.section-header { display: flex; align-items: center; justify-content: space-between; margin: 32px 0 16px; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.section-header h2 { font-size: 18px; }
.milestone-list { display: flex; flex-direction: column; gap: 8px; }
.milestone-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; display: flex; align-items: center; gap: 12px; }
.milestone-name { font-weight: 500; flex: 1; }
.milestone-due { font-size: 12px; color: var(--text-muted); }

/* Admin stats */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; }
.stat-num { font-size: 36px; font-weight: 700; color: var(--primary-hover); }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* Table */
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--border); color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.data-table td { padding: 12px; border-bottom: 1px solid var(--border); }
.data-table tr:last-child td { border-bottom: none; }

/* Empty state */
.empty-state { text-align: center; padding: 60px; color: var(--text-muted); }

@media (max-width: 900px) {
  .kanban-board { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .kanban-board { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
}