@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Mono:wght@400;500&display=swap');

/* ─── CSS Variables ─────────────────────────────────────────── */
:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f9fafb;
  --border: #e8eaed;
  --border-light: #f0f2f5;

  --blue: #2563eb;
  --blue-light: #eff4ff;
  --blue-dark: #1d4ed8;

  --green: #16a34a;
  --green-light: #f0fdf4;
  --amber: #d97706;
  --amber-light: #fffbeb;
  --purple: #7c3aed;
  --purple-light: #f5f3ff;
  --rose: #e11d48;
  --rose-light: #fff1f2;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --sidebar-width: 240px;
  --navbar-height: 64px;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 12px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.08), 0 4px 8px rgba(0,0,0,.04);

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ─── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform var(--transition), box-shadow var(--transition);
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 18px;
  border-bottom: 1px solid var(--border-light);
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--blue);
  border-radius: 10px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.brand-icon svg { color: white; }

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.sidebar-nav {
  padding: 12px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 12px 8px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--blue-light);
  color: var(--blue);
}

.nav-item.active svg { color: var(--blue); }

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-item:hover svg { color: var(--text-primary); }

.nav-badge {
  margin-left: auto;
  background: var(--blue);
  color: white;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 20px;
  font-family: 'DM Mono', monospace;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border-light);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), #6366f1);
  display: grid;
  place-items: center;
  color: white;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--text-muted);
}

/* ─── Main Content ───────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ─── Navbar ─────────────────────────────────────────────────── */
.navbar {
  height: var(--navbar-height);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.hamburger:hover { background: var(--surface-2); }

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.navbar-left { display: flex; align-items: center; gap: 12px; flex: 1; }

.page-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.page-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  display: none;
}

.navbar-right { display: flex; align-items: center; gap: 8px; }

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
  border: 1px solid transparent;
}

.nav-btn-ghost {
  background: none;
  border-color: var(--border);
  color: var(--text-secondary);
}

.nav-btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}

.nav-btn-primary {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
}

.nav-btn-primary:hover { background: var(--blue-dark); }

.notification-btn {
  position: relative;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: none;
  border: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.notification-btn:hover { background: var(--surface-2); color: var(--text-primary); }

.notif-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  background: var(--rose);
  border-radius: 50%;
  border: 2px solid white;
}

/* ─── Page Body ──────────────────────────────────────────────── */
.page-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  flex: 1;
}

/* ─── Welcome Bar ────────────────────────────────────────────── */
.welcome-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.welcome-text h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.welcome-text p {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-top: 3px;
}

.date-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

/* ─── Stats Grid ─────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  transition: opacity var(--transition);
  opacity: 0;
}

.stat-card:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.stat-card:hover::before { opacity: 1; }

.stat-card.blue::before { background: var(--blue); }
.stat-card.green::before { background: var(--green); }
.stat-card.amber::before { background: var(--amber); }
.stat-card.purple::before { background: var(--purple); }

.stat-header { display: flex; align-items: flex-start; justify-content: space-between; }

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.stat-icon.blue { background: var(--blue-light); color: var(--blue); }
.stat-icon.green { background: var(--green-light); color: var(--green); }
.stat-icon.amber { background: var(--amber-light); color: var(--amber); }
.stat-icon.purple { background: var(--purple-light); color: var(--purple); }

.stat-trend {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 20px;
}

.stat-trend.up { background: var(--green-light); color: var(--green); }
.stat-trend.neutral { background: var(--surface-2); color: var(--text-muted); }

.stat-body {}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1;
  font-family: 'DM Mono', monospace;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 4px;
}

.stat-breakdown {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.breakdown-chip {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 11.5px;
  color: var(--text-secondary);
  font-weight: 500;
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ─── Content Grid ───────────────────────────────────────────── */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 16px;
}

/* ─── Card ───────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-light);
  gap: 12px;
}

.card-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 1px;
}

.card-action {
  font-size: 12.5px;
  color: var(--blue);
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.card-action:hover { text-decoration: underline; }

.card-body { padding: 20px; }

/* ─── Chart ──────────────────────────────────────────────────── */
.chart-wrapper {
  position: relative;
  height: 260px;
}

.chart-legend {
  display: flex;
  gap: 16px;
  padding: 0 20px 16px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 500;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}

/* ─── Activity Feed ──────────────────────────────────────────── */
.activity-list {
  display: flex;
  flex-direction: column;
}

.activity-item {
  display: flex;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition);
}

.activity-item:last-child { border-bottom: none; }
.activity-item:hover { background: var(--surface-2); }

.activity-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.activity-content { flex: 1; min-width: 0; }

.activity-text {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.4;
}

.activity-text strong { font-weight: 600; }

.activity-meta {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ─── Quick Actions ──────────────────────────────────────────── */
.quick-actions-section {}

.actions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 16px 20px;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  font-family: inherit;
}

.action-btn:hover {
  background: var(--surface);
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
  transform: translateY(-1px);
}

.action-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
}

.action-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.3;
}

/* ─── Bottom Grid ────────────────────────────────────────────── */
.bottom-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* ─── Metric Row ─────────────────────────────────────────────── */
.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-light);
}

.metric-row:last-child { border-bottom: none; }

.metric-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-value {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'DM Mono', monospace;
}

.metric-bar-wrap {
  flex: 1;
  max-width: 80px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.metric-bar {
  height: 100%;
  border-radius: 2px;
  transition: width 1s ease;
}

/* ─── Overlay ────────────────────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 90;
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity var(--transition);
}

.sidebar-overlay.visible { opacity: 1; }

/* ─── Responsive ─────────────────────────────────────────────── */

/* Tablet: 2 col stats */
@media (max-width: 1280px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .bottom-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Tablet Portrait */
@media (max-width: 900px) {
  :root { --sidebar-width: 260px; }
  
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }
  
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .sidebar-overlay { display: block; }

  .main-content { margin-left: 0; }

  .hamburger { display: flex; }

  .page-subtitle { display: block; }

  .actions-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile */
@media (max-width: 640px) {
  .page-body { padding: 16px; gap: 16px; }
  
  .navbar { padding: 0 16px; }

  .stats-grid { grid-template-columns: 1fr; gap: 12px; }

  .stat-value { font-size: 28px; }

  .bottom-grid { grid-template-columns: 1fr; }

  .welcome-bar { flex-direction: column; align-items: flex-start; }

  .date-badge { display: none; }

  .actions-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }

  .card-body { padding: 16px; }
  .card-header { padding: 14px 16px; }

  .activity-item { padding: 12px 16px; }

  .chart-wrapper { height: 200px; }

  .page-title { font-size: 15px; }

  .nav-btn span { display: none; }
  .nav-btn { padding: 7px 10px; }
}

/* Small mobile */
@media (max-width: 380px) {
  .stat-breakdown { flex-direction: column; gap: 5px; }
}

/* ─── Animations ─────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes countUp {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.stat-card { animation: fadeInUp 0.4s ease both; }
.stat-card:nth-child(1) { animation-delay: 0.05s; }
.stat-card:nth-child(2) { animation-delay: 0.10s; }
.stat-card:nth-child(3) { animation-delay: 0.15s; }
.stat-card:nth-child(4) { animation-delay: 0.20s; }

.card { animation: fadeInUp 0.4s ease both; animation-delay: 0.25s; }

/* ─── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }