:root {
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --border: #e2e5ea;
  --text: #1c2430;
  --muted: #6b7684;
  --accent: #8a2b2b;
  --accent-dark: #6e2020;
  --gold: #c99a4a;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
  --radius: 10px;
  --sidebar-width: 260px;
  --sidebar-bg-start: #5c1c1c;
  --sidebar-bg-end: #3d1212;
  --topbar-h: 60px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }

/* Login */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: radial-gradient(circle at top, #fdf6ea 0%, #f4f5f7 65%);
}
.login-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  max-width: 380px;
  width: 100%;
  text-align: center;
  box-shadow: 0 10px 30px rgba(92, 28, 28, 0.1);
}
.login-logo { width: 84px; height: 84px; object-fit: contain; margin-bottom: 12px; }
.login-card h1 { font-size: 20px; margin: 0 0 8px; color: var(--accent-dark); }
.login-card p { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
#googleSignInButton { display: flex; justify-content: center; }
.login-error { color: var(--red); margin-top: 14px; font-size: 13px; }

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

.app-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--sidebar-bg-start), var(--sidebar-bg-end));
  color: #fff;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  transition: transform 0.25s ease;
  z-index: 40;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.sidebar-brand img { width: 40px; height: 40px; object-fit: contain; flex-shrink: 0; }
.sidebar-brand-text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.sidebar-brand-text strong { font-size: 15px; }
.sidebar-brand-text span { font-size: 11px; color: rgba(255,255,255,0.65); }

.sidebar-nav { display: flex; flex-direction: column; padding: 10px 0; flex: 1; }
.sidebar-nav .tab-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  border: none;
  background: none;
  color: rgba(255,255,255,0.8);
  padding: 12px 16px;
  font-size: 13.5px;
  text-align: left;
  cursor: pointer;
  border-left: 3px solid transparent;
  min-height: 44px;
}
.sidebar-nav .tab-btn i { font-size: 16px; width: 18px; text-align: center; flex-shrink: 0; }
.sidebar-nav .tab-btn:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar-nav .tab-btn.active {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-left-color: var(--gold);
  font-weight: 600;
}

.content-wrapper { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 20px;
  height: var(--topbar-h);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
}
.topbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.sidebar-toggle-btn {
  border: none;
  background: none;
  font-size: 20px;
  color: var(--text);
  cursor: pointer;
  padding: 6px;
  line-height: 1;
  border-radius: 6px;
  flex-shrink: 0;
}
.sidebar-toggle-btn:hover { background: var(--bg); }
.topbar-title { font-weight: 600; font-size: 16px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); flex-shrink: 0; }
.btn-link {
  background: none; border: none; color: var(--accent); cursor: pointer; font-size: 13px; padding: 0;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 39;
}

.app-content {
  padding: 24px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* Cards / generic */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(28, 36, 48, 0.05);
}
.card h2 { font-size: 15px; margin: 0 0 12px; color: var(--accent-dark); }
.card h3 { font-size: 14px; margin: 0 0 8px; color: var(--muted); }

.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stat-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.stat-box .num { font-size: 22px; font-weight: 700; color: var(--accent-dark); }
.stat-box .label { font-size: 12px; color: var(--muted); margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: #f9fafb; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.badge-posted { background: #dcfce7; color: var(--green); }
.badge-pending { background: #fef3c7; color: var(--amber); }
.badge-failed { background: #fee2e2; color: var(--red); }
.badge-new { background: #f6ead2; color: var(--accent-dark); }

.content-card {
  display: flex;
  gap: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  background: var(--card-bg);
}
.content-card img { width: 120px; height: 120px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.content-card .meta { flex: 1; min-width: 0; }
.content-card .meta .date { font-weight: 600; font-size: 13px; }
.content-card .meta .caption { font-size: 13px; color: var(--text); white-space: pre-wrap; margin-top: 6px; max-height: 140px; overflow-y: auto; }

.produk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.produk-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  overflow: hidden;
}

.contacts-layout { display: flex; gap: 16px; align-items: flex-start; }
.contacts-list { flex: 1; max-width: 340px; }
.contacts-detail { flex: 2; min-width: 0; }
.contact-item {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  font-size: 13px;
}
.contact-item:hover { background: #f9fafb; }
.contact-item.selected { border-color: var(--accent); background: #fbf1e6; }
.contact-item .phone { font-weight: 600; }
.contact-item .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

.msg-bubble {
  background: #f3f4f6;
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 8px;
  font-size: 13px;
}
.msg-bubble .msg-meta { color: var(--muted); font-size: 11px; margin-top: 4px; }
/* Pesan keluar (balasan admin) - rata kanan, warna hijau muda seperti bubble
   "terkirim" di aplikasi WhatsApp asli, supaya langsung kebeda dari pesan
   masuk customer tanpa perlu baca label. */
.msg-bubble.outbound { background: #dcf8c6; margin-left: auto; max-width: 80%; }
.msg-reply-box { display: flex; gap: 8px; margin-top: 10px; align-items: flex-end; flex-wrap: wrap; }
.msg-reply-box textarea { flex: 1; min-width: 160px; resize: vertical; font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; }
.msg-image { display: block; max-width: 220px; max-height: 220px; border-radius: 6px; margin-bottom: 6px; cursor: pointer; object-fit: cover; background: var(--border); }
.msg-image-loading { display: flex; align-items: center; justify-content: center; width: 160px; height: 120px; border-radius: 6px; margin-bottom: 6px; background: var(--border); color: var(--muted); font-size: 11px; }
.msg-doc-btn { display: block; margin-bottom: 6px; padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fff; font-size: 12px; cursor: pointer; text-align: left; }
.msg-doc-btn:hover { background: #f9fafb; }
.msg-doc-btn:disabled { opacity: 0.6; cursor: default; }
.tag { display: inline-block; background: #e5e7eb; border-radius: 6px; padding: 1px 6px; font-size: 10px; margin-right: 4px; }

.form-row { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.form-row input {
  flex: 1;
  min-width: 160px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  min-height: 40px;
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-preset {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 12px;
  min-height: 36px;
}
.btn-preset:hover { background: #f9fafb; border-color: var(--accent); }
.btn-danger {
  background: none;
  border: 1px solid var(--red);
  color: var(--red);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  min-height: 32px;
}

/* Charts (Analisis Percakapan) */
.chart-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; margin-bottom: 16px; }
.chart-box { position: relative; height: 260px; }
.chart-box.tall { height: 320px; }
.stacked-bar-legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; font-size: 12px; color: var(--muted); }
.stacked-bar-legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 5px; vertical-align: middle; }
.stacked-bar-track { display: flex; height: 28px; border-radius: 6px; overflow: hidden; background: var(--border); }
.stacked-bar-seg { display: flex; align-items: center; justify-content: center; color: #fff; font-size: 11px; font-weight: 600; white-space: nowrap; min-width: 0; }
.stacked-bar-seg.zero { display: none; }

.heatmap-wrap { overflow-x: auto; padding-bottom: 4px; }
.heatmap-grid { display: grid; grid-template-columns: 64px repeat(24, minmax(27px, 1fr)); gap: 2px; width: max-content; min-width: 100%; }
.heatmap-hour-label { text-align: center; font-size: 10px; color: var(--muted); padding-bottom: 3px; }
.heatmap-day-label { display: flex; align-items: center; font-size: 11px; color: var(--text); padding-right: 6px; white-space: nowrap; }
.heatmap-cell { aspect-ratio: 1; border-radius: 3px; min-width: 25px; min-height: 25px; display: flex; align-items: center; justify-content: center; }
.heatmap-cell-label { font-size: 9px; font-weight: 600; line-height: 1; }
.heatmap-legend { display: flex; align-items: center; gap: 4px; margin-top: 10px; margin-bottom: 4px; font-size: 11px; color: var(--muted); }
.heatmap-legend-swatch { width: 16px; height: 11px; border-radius: 2px; display: inline-block; }

.empty-state { color: var(--muted); font-size: 13px; padding: 20px; text-align: center; }
.error-state { color: var(--red); font-size: 13px; padding: 12px; }
.loading-state { color: var(--muted); font-size: 13px; padding: 12px; }

.btn-back-contacts { display: none; }

/* ===== Mobile (<992px): sidebar jadi off-canvas drawer ===== */
@media (max-width: 991px) {
  .app-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 24px rgba(0,0,0,0.2);
  }
  .app-sidebar.sidebar-open { transform: translateX(0); }
  .sidebar-overlay.visible { display: block; }
  .app-content { padding: 16px; }
}

@media (min-width: 992px) {
  .wrapper.sidebar-collapsed .app-sidebar { margin-left: calc(var(--sidebar-width) * -1); }
}

@media (max-width: 700px) {
  .contacts-layout { flex-direction: column; }
  .contacts-list { max-width: none; }
  .content-card { flex-direction: column; }
  .content-card img { width: 100%; height: 180px; }

  /* Pola "drill-down" ala app chat: di layar sempit, daftar kontak dan
     riwayat chat tidak ditumpuk (yang bikin chat "kelihatan hilang" di bawah
     daftar kontak yang panjang) - begitu satu kontak dibuka, daftar kontak
     disembunyikan dan chat tampil penuh, dengan tombol "Kembali" buat balik
     ke daftar. Di layar lebar (desktop), class ini tidak berpengaruh -
     keduanya tetap tampil berdampingan seperti biasa. */
  .contacts-layout.chat-open .contacts-list { display: none; }
  .contacts-layout.chat-open .btn-back-contacts { display: inline-block; margin-bottom: 12px; }

  .grid-stats { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 8px; }
  .stat-box { padding: 12px; }
  .stat-box .num { font-size: 18px; }
  .chart-box { height: 220px; }
  .chart-box.tall { height: 260px; }
  .card { overflow-x: auto; }
  .card h2 { font-size: 14px; }
  .topbar-user span#userEmail { display: none; }
}