:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --text: #1a2233;
  --muted: #6b7689;
  --primary: #ff7900;
  --primary-dark: #e56a00;
  --border: #e2e7f0;
  --danger: #d93025;
  --ok: #188038;
  --sidebar: #171e2c;
  --sidebar-text: #b8c0d0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 230px;
  background: var(--sidebar);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  padding: 22px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar nav { flex: 1; padding: 12px 0; }

.sidebar nav a {
  display: block;
  padding: 12px 22px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: background 0.15s, color 0.15s;
}

.sidebar nav a:hover, .sidebar nav a.active {
  background: rgba(255,121,0,0.15);
  color: #fff;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.status-chip {
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
}

.content { flex: 1; padding: 28px 36px; max-width: 1100px; }

.view.hidden { display: none; }

h1 { font-size: 1.6rem; margin-bottom: 20px; }
h2 { font-size: 1.15rem; margin: 26px 0 14px; }

.view-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.view-head h1 { margin-bottom: 0; }

.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s;
}
.btn:hover { border-color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--danger); }
.btn.danger:hover { border-color: var(--danger); }
.btn.small { padding: 5px 10px; font-size: 0.8rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.stat-card .value { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-card .label { color: var(--muted); font-size: 0.85rem; margin-top: 4px; }

.table-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 12px 16px; text-align: left; }
th { background: #fafbfe; color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
tbody tr { border-top: 1px solid var(--border); }
tbody tr:hover { background: #fafbfe; }

.filters { display: flex; gap: 10px; margin-bottom: 14px; }
.filters input[type="search"], .filters select {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  background: var(--panel);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.card .meta { color: var(--muted); font-size: 0.82rem; margin-bottom: 12px; }
.card .actions { display: flex; gap: 8px; flex-wrap: wrap; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge.draft { background: #eef1f6; color: var(--muted); }
.badge.sending { background: #fff4e5; color: #b45309; }
.badge.sent { background: #e6f4ea; color: var(--ok); }
.badge.failed { background: #fdeceb; color: var(--danger); }
.badge.scheduled { background: #e8f0fe; color: #1a73e8; }

.inbox-layout { display: grid; grid-template-columns: 320px 1fr; gap: 16px; min-height: 500px; }

.conversation-list {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-y: auto;
  max-height: 75vh;
}

.conv-item {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}
.conv-item:hover, .conv-item.active { background: #fff4e5; }
.conv-item .phone { font-weight: 600; font-size: 0.9rem; }
.conv-item .preview { color: var(--muted); font-size: 0.8rem; margin-top: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.conversation {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg-row { display: flex; }
.msg-row.out { justify-content: flex-end; }
.msg-bubble {
  max-width: 70%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.45;
}
.msg-row.out .msg-bubble { background: var(--primary); color: #fff; border-bottom-right-radius: 4px; }
.msg-row.in .msg-bubble { background: #eef1f6; border-bottom-left-radius: 4px; }
.msg-meta { font-size: 0.72rem; color: var(--muted); margin-top: 4px; }

.send-box { display: flex; gap: 8px; margin-top: auto; }
.send-box input { flex: 1; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  min-height: 300px;
}

.settings-form { max-width: 560px; }
.settings-form label { display: block; margin: 12px 0; font-size: 0.9rem; color: var(--muted); }
.settings-form input[type="text"], .settings-form input[type="url"] {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text);
}
.settings-form input[readonly] { background: #f6f8fb; }
.radio-line { display: flex; align-items: center; gap: 10px; color: var(--text) !important; }
.radio-line input { accent-color: var(--primary); }
.saved-msg { color: var(--ok); margin-left: 12px; }
.hidden { display: none; }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10,15,30,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal {
  background: var(--panel);
  border-radius: 14px;
  padding: 26px;
  width: min(520px, 92vw);
  max-height: 88vh;
  overflow-y: auto;
}

.modal h2 { margin: 0 0 18px; }

.modal .form-row { margin-bottom: 14px; }
.modal .form-row label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 5px; }
.modal .form-row input, .modal .form-row textarea, .modal .form-row select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
}
.modal .form-row textarea { resize: vertical; min-height: 90px; }
.modal .form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

.checkbox-grid {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
}
.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px;
  font-size: 0.88rem;
  color: var(--text);
}

.char-count { font-size: 0.78rem; color: var(--muted); text-align: right; margin-top: 4px; }

/* Login screen */
.login-screen {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #171e2c 0%, #2a1f14 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.login-box {
  background: var(--panel);
  border-radius: 16px;
  padding: 36px;
  width: min(400px, 92vw);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.login-box .logo { color: var(--primary); padding: 0 0 22px; font-size: 1.6rem; text-align: center; }
.login-box h2 { text-align: center; margin: 0 0 20px; }
.login-box .form-row { margin-bottom: 14px; }
.login-box .form-row label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 5px; }
.login-box .form-row input {
  width: 100%; padding: 11px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 0.95rem;
}
.login-box .btn.full-width { width: 100%; padding: 12px; font-size: 1rem; }
.login-error {
  background: #fdeceb; color: var(--danger); border-radius: 8px;
  padding: 9px 12px; font-size: 0.85rem; margin-bottom: 12px;
}
.hint { font-size: 0.82rem; color: var(--muted); margin: 8px 0; line-height: 1.5; }
.user-info { color: #fff; font-size: 0.8rem; margin: 10px 0 6px; }
.logout-btn { background: transparent; border-color: rgba(255,255,255,0.25); color: var(--sidebar-text); width: 100%; }
.logout-btn:hover { border-color: var(--danger); color: #ffb4ab; }
.hint-banner {
  background: #fff8ec; border: 1px solid #f2d9a8; border-radius: 10px;
  padding: 12px 16px; font-size: 0.85rem; color: #7a5b1e; margin-bottom: 16px; line-height: 1.5;
}
.hint-banner code, .hint code {
  background: rgba(0,0,0,0.06); padding: 1px 6px; border-radius: 5px;
  font-family: Consolas, monospace; font-size: 0.82em; word-break: break-all;
}
code#cron-url-display { display: inline-block; max-width: 100%; }

@media (max-width: 900px) {
  .inbox-layout { grid-template-columns: 1fr; }
  .sidebar { width: 64px; }
  .sidebar .logo { font-size: 1rem; padding: 18px 10px; text-align: center; }
  .sidebar nav a { padding: 12px 16px; font-size: 1.1rem; }
  .sidebar-footer { display: none; }
  .content { padding: 18px; }
}