:root {
  --primary: #5cb99f;
  --primary-dark: #429b83;
  --primary-darker: #2f7a66;
  --primary-light: #e3f4ee;
  --primary-lighter: #f0faf6;
  --ink: #1e2b28;
  --muted: #6b7d78;
  --bg: #f7fbf9;
  --border: #dfeee8;
  --card-radius: 18px;
  --shadow-sm: 0 1px 3px rgba(30,43,40,.06);
  --shadow-md: 0 10px 30px rgba(30,43,40,.10);
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans Thai', 'Sarabun', 'Segoe UI', system-ui, sans-serif;
  margin: 0;
}

a { text-decoration: none; }

/* ---------- Buttons ---------- */
.btn-primary-app {
  background: var(--primary);
  border: none;
  color: #fff;
  font-weight: 600;
  border-radius: 10px;
  padding: .55rem 1.3rem;
  transition: .15s;
}
.btn-primary-app:hover { background: var(--primary-dark); color: #fff; }

.btn-outline-app {
  border: 1.5px solid var(--primary);
  color: var(--primary-dark);
  font-weight: 600;
  border-radius: 10px;
  padding: .5rem 1.2rem;
  background: #fff;
}
.btn-outline-app:hover { background: var(--primary-light); color: var(--primary-darker); }

.btn-hero-cta {
  background: #fff;
  color: var(--primary-darker);
  font-weight: 700;
  border-radius: 10px;
  padding: .6rem 1.5rem;
  border: none;
  transition: .15s;
}
.btn-hero-cta:hover { background: var(--primary-lighter); color: var(--primary-darker); }

/* ---------- Navbar ---------- */
.navbar-app {
  background: #fff;
  box-shadow: var(--shadow-sm);
  padding: .75rem 0;
}
.navbar-app .navbar-brand {
  font-weight: 800;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.navbar-app .nav-link {
  color: var(--ink);
  font-weight: 500;
  margin: 0 .3rem;
}
.navbar-app .nav-link:hover,
.navbar-app .nav-link.active { color: var(--primary-dark); }

/* ---------- Hero ---------- */
.hero-section {
  background: linear-gradient(135deg, var(--primary-darker), var(--primary-dark) 55%, var(--primary));
  color: #fff;
  border-radius: 0 0 32px 32px;
  padding: 4.5rem 0 5rem;
}
.hero-section h1 { font-weight: 800; font-size: 2.6rem; }
.hero-section .lead { color: #eafff5; }
.hero-badge {
  background: rgba(255,255,255,.18);
  border-radius: 30px;
  padding: .35rem 1rem;
  font-size: .85rem;
  display: inline-block;
}

/* ---------- Cards ---------- */
.app-card {
  background: #fff;
  border: none;
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-sm);
  transition: .15s;
}
.app-card:hover { box-shadow: var(--shadow-md); }

.stat-card {
  border-radius: var(--card-radius);
  padding: 1.4rem;
  background: #fff;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.stat-card .icon-box {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary-light); color: var(--primary-dark);
  font-size: 1.4rem;
}
.stat-card .stat-value { font-size: 1.7rem; font-weight: 800; line-height: 1; }
.stat-card .stat-label { color: var(--muted); font-size: .85rem; }

/* ---------- Sidebar / Dashboard shell ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px;
  background: #fff;
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  position: sticky; top: 0;
  height: 100vh; overflow-y: auto;
  flex-shrink: 0;
}
.sidebar .brand {
  font-weight: 800; color: var(--primary-dark);
  padding: .5rem .5rem 1.2rem;
  display: flex; align-items: center; gap: .5rem;
  font-size: 1.05rem;
}
.sidebar .nav-link {
  color: #33413d;
  border-radius: 10px;
  padding: .6rem .8rem;
  margin-bottom: .25rem;
  font-weight: 500;
  display: flex; gap: .6rem; align-items: center;
}
.sidebar .nav-link.active { background: var(--primary-light); color: var(--primary-dark); font-weight: 700; }
.sidebar .nav-link:hover { background: var(--primary-lighter); color: var(--primary-dark); }
.sidebar hr { border-color: var(--border); }

.main-content { flex: 1; padding: 1.8rem 2rem; max-width: 100%; min-width: 0; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.5rem;
}
.topbar h4 { font-weight: 800; margin: 0; }

.datetime-th {
  background: var(--primary-light);
  color: var(--primary-darker);
  border-radius: 30px;
  padding: .45rem 1rem;
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
}

.user-chip {
  background: #fff;
  border-radius: 30px;
  padding: .35rem .9rem .35rem .35rem;
  display: flex; align-items: center; gap: .5rem;
  box-shadow: var(--shadow-sm);
}
.user-chip .avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  overflow: hidden;
}
.user-chip .avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Forms ---------- */
.form-control, .form-select {
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: .6rem .85rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
label.form-label { font-weight: 600; font-size: .9rem; color: #33413d; }

/* ---------- Badges ---------- */
.badge-soft-green { background: var(--primary-light); color: var(--primary-darker); font-weight: 600; }
.badge-soft-amber { background: #fef3c7; color: #92400e; font-weight: 600; }
.badge-soft-red { background: #fee2e2; color: #b91c1c; font-weight: 600; }
.badge-soft-blue { background: #dbeafe; color: #1e40af; font-weight: 600; }

/* ---------- AI box ---------- */
.ai-box {
  border-radius: var(--card-radius);
  background: linear-gradient(180deg, var(--primary-lighter), #ffffff);
  border: 1px solid var(--primary-light);
  padding: 1.5rem;
}
.ai-loading { display: flex; align-items: center; gap: .7rem; color: var(--primary-dark); font-weight: 600; }

/* ---------- Chat ---------- */
.chat-window { overflow-y: auto; background: var(--bg); }
.chat-bubble-user {
  background: var(--primary); color: #fff;
  border-radius: 16px 16px 4px 16px;
  padding: .75rem 1rem; max-width: 72%;
}
.chat-bubble-ai {
  background: #fff; border: 1px solid var(--border);
  border-radius: 16px 16px 16px 4px;
  padding: .75rem 1rem; max-width: 72%;
}

/* ---------- Footer ---------- */
footer.app-footer {
  background: #1e2b28; color: #c7d6d1;
  padding: 3rem 0 1.5rem; margin-top: 4rem;
}
footer.app-footer a { color: #e2efeb; }
footer.app-footer h6 { color: #fff; font-weight: 700; }

/* ---------- Pagination ---------- */
.pagination .page-item.active .page-link {
  background: var(--primary); border-color: var(--primary);
}
.pagination .page-link { color: var(--primary-dark); }

/* ---------- Responsive sidebar ---------- */
@media (max-width: 991px) {
  .sidebar {
    position: fixed; left: -280px; z-index: 1050;
    transition: .2s; box-shadow: var(--shadow-md);
  }
  .sidebar.show { left: 0; }
  .main-content { padding: 1.2rem; }
  .hero-section h1 { font-size: 2rem; }
}