:root {
  --bg: #07080d;
  --bg-surface: #11151f;
  --bg-surface-strong: #141b28;
  --border: rgba(255,255,255,0.08);
  --text: #e7edf8;
  --text-muted: #9aa5c4;
  --text-muted-strong: #cbd2f0;
  --accent: #f43f5e;
  --accent-soft: rgba(244,63,94,0.14);
  --success: #22c55e;
  --danger: #f97316;
  --radius: 18px;
  --radius-sm: 14px;
  --shadow: 0 30px 70px rgba(0,0,0,0.2);
  --max-width: 1320px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'DM Sans', sans-serif;
  background: radial-gradient(circle at top, rgba(244,63,94,0.12), transparent 30%),
              linear-gradient(180deg, #0b101b 0%, #07080d 100%);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

button, select, input {
  font: inherit;
}

button {
  border: none;
  cursor: pointer;
}

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 32px 20px;
  background: rgba(13, 16, 24, 0.95);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sidebar-brand {
  display: flex;
  gap: 14px;
  align-items: center;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(244,63,94,0.9), rgba(249,115,22,0.9));
  box-shadow: 0 14px 40px rgba(244,63,94,0.18);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.brand-name {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.brand-badge {
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(244,63,94,0.12);
  color: #fecdd3;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.sidebar-nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 16px;
  color: var(--text-muted);
  transition: background 0.25s ease, color 0.25s ease;
}

.nav-item:hover,
.nav-item.active {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

.nav-item.active {
  border-left: 3px solid var(--accent);
}

.icon {
  width: 28px;
  text-align: center;
  color: var(--accent);
}

.content {
  padding: 32px;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
}

h1 {
  margin: 0;
  font-size: clamp(2.1rem, 2.6vw, 3rem);
}

.subtitle {
  margin: 16px 0 0;
  max-width: 760px;
  color: var(--text-muted-strong);
  line-height: 1.7;
}

.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, #f97316, #f43f5e);
  color: #fff;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 50px rgba(244,63,94,0.2);
}

.button-secondary {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--text);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 32px 0;
}

.stat-card {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--bg-surface);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}

.stat-label {
  display: block;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

.stat-card strong {
  font-size: 2.2rem;
}

.grid-two {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--bg-surface);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-muted-strong);
}

input, select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--text);
}

select {
  appearance: none;
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

thead tr {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

th, td {
  padding: 14px 12px;
  color: var(--text-muted-strong);
  font-size: 0.95rem;
}

th {
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

tbody tr {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

tbody td {
  color: var(--text);
}

.button-small {
  padding: 10px 14px;
  font-size: 0.85rem;
}

.user-card {
  display: grid;
  gap: 18px;
  padding: 22px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
  border: 1px solid rgba(255,255,255,0.08);
}

.user-badge {
  display: inline-flex;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(244,63,94,0.12);
  color: #fecdd3;
  font-weight: 700;
}

.user-meta {
  margin: 0;
  color: var(--text-muted);
}

.user-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.user-grid div span {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.user-grid div strong {
  display: block;
  margin-top: 6px;
  color: var(--text);
}

.alert {
  padding: 18px 20px;
  border-radius: 16px;
  margin-bottom: 24px;
  font-weight: 600;
}

.alert-error {
  background: rgba(248,113,113,0.12);
  border: 1px solid rgba(248,113,113,0.18);
  color: #fee2e2;
}

.alert-success {
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.18);
  color: #d1fae5;
}

.help {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.empty-state {
  color: var(--text-muted);
  padding: 18px 0;
}

@media (max-width: 1080px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
  }

  .content {
    padding: 24px;
  }

  .grid-two,
  .stats-grid {
    grid-template-columns: 1fr;
  }
}