:root {
  --coral: #ff7f50;
  --coral-dark: #e8653a;
  --orange: #e8713c;
  --black: #1a1a1a;
  --gray: #5c5c5c;
  --gray-light: #8a8a8a;
  --cream: #f9f7f5;
  --white: #ffffff;
  --border: rgba(26, 26, 26, 0.08);
  --shadow: 0 12px 40px rgba(26, 26, 26, 0.08);
  --radius: 14px;
  --sidebar-w: 248px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--black);
  background: var(--cream);
}

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

button, input, select, textarea {
  font: inherit;
}

/* Login */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at top right, rgba(255, 127, 80, 0.12), transparent 40%),
    var(--cream);
}

.login-card {
  width: min(420px, 100%);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  padding: 36px 32px 28px;
  box-shadow: var(--shadow);
}

.login-card img { height: 36px; margin-bottom: 24px; }

.login-card h1 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.login-card .sub {
  margin: 0 0 24px;
  color: var(--gray);
  font-size: 0.95rem;
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

.field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--white);
}

.field input:focus {
  outline: 2px solid rgba(255, 127, 80, 0.35);
  border-color: var(--coral);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--coral);
  color: var(--white);
}

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

.btn-secondary {
  background: var(--white);
  border-color: var(--border);
  color: var(--black);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--gray);
}

.btn-danger {
  background: #fff5f5;
  border-color: #fecaca;
  color: #b91c1c;
}

.btn-block { width: 100%; }

.demo-note {
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 127, 80, 0.1);
  color: var(--gray);
  font-size: 0.82rem;
  line-height: 1.5;
}

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

.sidebar {
  width: var(--sidebar-w);
  background: var(--white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 30;
  transform: translateX(0);
  transition: transform 0.2s ease;
}

.sidebar-brand {
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--border);
}

.sidebar-brand img { height: 30px; }

.sidebar-brand p {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--gray-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.sidebar-nav {
  padding: 14px 10px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 4px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--gray);
  font-weight: 500;
  font-size: 0.92rem;
  cursor: pointer;
  text-align: left;
  text-decoration: none;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.75;
}

.nav-item:hover {
  background: rgba(255, 127, 80, 0.08);
  color: var(--black);
}

.nav-item.active {
  background: rgba(255, 127, 80, 0.14);
  color: var(--black);
  font-weight: 600;
}

.nav-item.active svg { opacity: 1; color: var(--coral); }

.sidebar-footer {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--gray-light);
}

.main-wrap {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 28px;
  background: rgba(249, 247, 245, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar-left { display: flex; align-items: center; gap: 14px; min-width: 0; }

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}

.topbar h2 {
  margin: 0;
  font-size: 1.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar .meta {
  margin: 2px 0 0;
  font-size: 0.82rem;
  color: var(--gray-light);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--white);
  cursor: pointer;
  position: relative;
}

.icon-btn .dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral);
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--coral), var(--orange));
  color: var(--white);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.content {
  padding: 24px 28px 40px;
}

.preview-banner {
  margin-bottom: 20px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid rgba(255, 127, 80, 0.25);
  background: rgba(255, 127, 80, 0.08);
  font-size: 0.88rem;
  color: var(--gray);
}

.panel { display: block; }

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.page-head h1 {
  margin: 0;
  font-size: clamp(1.4rem, 2vw, 1.75rem);
}

.page-head p {
  margin: 4px 0 0;
  color: var(--gray);
  font-size: 0.92rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
}

.stat-card .label {
  font-size: 0.82rem;
  color: var(--gray-light);
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1.1;
}

.stat-card .hint {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--coral);
  font-weight: 600;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.card-head h3 {
  margin: 0;
  font-size: 1rem;
}

.card-body { padding: 0; }

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

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.data th,
table.data td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

table.data th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-light);
  background: rgba(249, 247, 245, 0.6);
}

table.data tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green { background: #ecfdf3; color: #047857; }
.badge-coral { background: rgba(255, 127, 80, 0.14); color: #c2410c; }
.badge-gray { background: #f3f4f6; color: #4b5563; }

.progress {
  height: 8px;
  background: #eee;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 6px;
}

.progress > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--coral), var(--orange));
  border-radius: 999px;
}

.row-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.row-actions button {
  padding: 6px 10px;
  font-size: 0.8rem;
}

.quick-actions {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-input {
  min-width: 220px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--white);
}

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--white);
  font-size: 0.82rem;
  cursor: pointer;
}

.chip.active {
  background: rgba(255, 127, 80, 0.14);
  border-color: rgba(255, 127, 80, 0.35);
  color: #c2410c;
  font-weight: 600;
}

.messages-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: 520px;
}

.thread-list {
  border-right: 1px solid var(--border);
}

.thread {
  display: block;
  width: 100%;
  padding: 14px 16px;
  border: none;
  border-bottom: 1px solid var(--border);
  background: var(--white);
  text-align: left;
  cursor: pointer;
}

.thread:hover { background: rgba(255, 127, 80, 0.05); }

.thread.active { background: rgba(255, 127, 80, 0.1); }

.thread strong { display: block; font-size: 0.92rem; margin-bottom: 4px; }

.thread span {
  display: block;
  font-size: 0.8rem;
  color: var(--gray-light);
}

.thread p {
  margin: 6px 0 0;
  font-size: 0.85rem;
  color: var(--gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-pane {
  display: flex;
  flex-direction: column;
  background: var(--cream);
}

.chat-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--white);
}

.chat-body {
  flex: 1;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bubble {
  max-width: 72%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.bubble.them {
  align-self: flex-start;
  background: var(--white);
  border: 1px solid var(--border);
}

.bubble.me {
  align-self: flex-end;
  background: var(--coral);
  color: var(--white);
}

.chat-compose {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  background: var(--white);
  display: flex;
  gap: 10px;
}

.chat-compose input {
  flex: 1;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-card { padding: 20px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-grid .full { grid-column: 1 / -1; }

.form-card label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.82rem;
  font-weight: 600;
}

.form-card input,
.form-card textarea,
.form-card select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--white);
}

.form-card textarea { min-height: 96px; resize: vertical; }

.form-actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 26, 0.45);
  display: none;
  place-items: center;
  z-index: 50;
  padding: 20px;
}

.modal-backdrop.open { display: grid; }

.modal {
  width: min(520px, 100%);
  background: var(--white);
  border-radius: calc(var(--radius) + 2px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal-head {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-head h3 { margin: 0; font-size: 1.05rem; }

.modal-body { padding: 18px 20px; }

.modal-foot {
  padding: 14px 20px 18px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2, .profile-grid { grid-template-columns: 1fr; }
  .messages-layout { grid-template-columns: 1fr; }
  .thread-list { border-right: none; border-bottom: 1px solid var(--border); }
}

@media (max-width: 860px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open { transform: translateX(0); }

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

  .menu-toggle { display: inline-flex; }

  .content { padding: 18px 16px 32px; }

  .topbar { padding: 12px 16px; }

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