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

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-input: #242736;
  --border: #2e3348;
  --text: #e2e8f0;
  --text-muted: #7c8494;
  --primary: #6366f1;
  --primary-hover: #4f52d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

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

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

.sidebar {
  width: 220px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  padding: 0 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-logo svg { color: var(--primary); flex-shrink: 0; }
.sidebar-logo span { font-weight: 700; font-size: 15px; letter-spacing: -0.3px; }

.sidebar-nav { padding: 16px 12px; flex: 1; }

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 7px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
  text-decoration: none;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
  background: rgba(99,102,241,0.12);
  color: var(--text);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-footer .user-name {
  font-size: 13px;
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-footer button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 5px;
  transition: color 0.15s;
}
.sidebar-footer button:hover { color: var(--danger); }

.main-content {
  margin-left: 220px;
  flex: 1;
  padding: 32px;
  max-width: 1200px;
}

/* ── Page Header ──────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text); text-decoration: none; }
.breadcrumb span { color: var(--text-muted); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  white-space: nowrap;
}

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text); background: var(--bg-input); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }

.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ── Cards ────────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color 0.15s, box-shadow 0.15s;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  display: block;
}
.card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), var(--shadow);
  text-decoration: none;
}

.card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(99,102,241,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--primary);
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.card-actions {
  display: flex;
  gap: 6px;
  margin-top: 14px;
  justify-content: flex-end;
}

/* ── Progress bar ─────────────────────────────────────────── */
.progress-bar {
  height: 4px;
  background: var(--bg-input);
  border-radius: 99px;
  margin: 10px 0 4px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: var(--success);
  border-radius: 99px;
  transition: width 0.3s;
}

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.badge-todo { background: rgba(124,132,148,0.15); color: var(--text-muted); }
.badge-in_progress { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-done { background: rgba(16,185,129,0.15); color: var(--success); }

/* ── Table ────────────────────────────────────────────────── */
.table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.table-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 180px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { border-color: var(--primary); }

.filter-select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  outline: none;
}
.filter-select:focus { border-color: var(--primary); }

table { width: 100%; border-collapse: collapse; }

thead tr { border-bottom: 1px solid var(--border); }

th {
  padding: 10px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(46,51,72,0.5);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(99,102,241,0.04); }

.col-num { width: 40px; color: var(--text-muted); font-size: 12px; }
.col-message { max-width: 360px; }
.col-message .msg-text {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}
.col-message .replies-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}
.col-author { white-space: nowrap; font-size: 13px; }
.col-date { white-space: nowrap; font-size: 12px; color: var(--text-muted); }
.col-status { white-space: nowrap; }
.col-notes { min-width: 180px; }

.status-select {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: all 0.15s;
}
.status-select.s-todo { color: var(--text-muted); border-color: rgba(124,132,148,0.3); }
.status-select.s-in_progress { color: var(--warning); border-color: rgba(245,158,11,0.4); background: rgba(245,158,11,0.05); }
.status-select.s-done { color: var(--success); border-color: rgba(16,185,129,0.4); background: rgba(16,185,129,0.05); }
.status-select.s-waiting { color: #60a5fa; border-color: rgba(96,165,250,0.4); background: rgba(96,165,250,0.05); }

.notes-input {
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 4px 8px;
  color: var(--text);
  font-size: 12px;
  resize: none;
  font-family: inherit;
  min-height: 38px;
  outline: none;
  transition: border-color 0.15s;
}
.notes-input:hover { border-color: var(--border); }
.notes-input:focus { border-color: var(--primary); background: var(--bg-input); }
.notes-input::placeholder { color: var(--text-muted); }

/* ── Empty state ──────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-muted);
}
.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.empty-state p { font-size: 13px; }

/* ── Modal ────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 16px; font-weight: 700; }
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  line-height: 0;
}
.modal-close:hover { background: var(--bg-input); color: var(--text); }

.modal-body { padding: 24px; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* ── Form ─────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
  font-family: inherit;
}
.form-control:focus { border-color: var(--primary); }
.form-control::placeholder { color: var(--text-muted); }

textarea.form-control { resize: vertical; min-height: 80px; }

/* ── Drop zone ────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-muted);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--primary);
  background: rgba(99,102,241,0.06);
  color: var(--text);
}
.drop-zone input[type="file"] { display: none; }
.drop-zone svg { margin-bottom: 10px; }
.drop-zone p { font-size: 13px; }
.drop-zone .file-name { font-weight: 600; color: var(--text); margin-top: 6px; font-size: 13px; }

/* ── Stats ────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.stat-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.stat-chip .stat-value { font-weight: 700; font-size: 18px; }
.stat-chip .stat-label { color: var(--text-muted); font-size: 12px; }

/* ── Login ────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
}
.login-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.login-logo svg { color: var(--primary); }
.login-logo span { font-size: 18px; font-weight: 800; letter-spacing: -0.5px; }
.login-card h1 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.login-card p { color: var(--text-muted); font-size: 13px; margin-bottom: 28px; }
.error-msg {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  color: #f87171;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
}

/* ── Toast ────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 13px;
  box-shadow: var(--shadow);
  animation: slideIn 0.2s ease;
  max-width: 320px;
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ── Utilities ────────────────────────────────────────────── */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: 'JetBrains Mono', 'Fira Code', monospace; }
.divider { height: 1px; background: var(--border); margin: 24px 0; }