:root {
  --bg: #f7f8fc;
  --panel: #ffffff;
  --panel-2: #f3f5fb;
  --border: #e4e7ef;
  --border-strong: #cbd0dc;
  --text: #0f172a;
  --text-2: #334155;
  --muted: #64748b;
  --brand: #4f46e5;
  --brand-2: #6366f1;
  --brand-soft: #eef2ff;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  --info: #0284c7;
  --bubble-me: #4f46e5;
  --bubble-me-text: #ffffff;
  --bubble-them: #ffffff;
  --bubble-them-text: #0f172a;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.15);
  --radius: 10px;
  --radius-lg: 16px;
  --topbar-h: 56px;
}
[data-theme="dark"] {
  --bg: #0b1120;
  --panel: #111827;
  --panel-2: #0f172a;
  --border: #1f2937;
  --border-strong: #334155;
  --text: #e2e8f0;
  --text-2: #cbd5e1;
  --muted: #94a3b8;
  --brand: #6366f1;
  --brand-2: #818cf8;
  --brand-soft: #1e1b4b;
  --bubble-me: #6366f1;
  --bubble-me-text: #ffffff;
  --bubble-them: #1f2937;
  --bubble-them-text: #e2e8f0;
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Arabic", "Cairo", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
body.rtl { font-family: "Segoe UI", "Cairo", "Noto Sans Arabic", Tahoma, sans-serif; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--brand); text-decoration: none; }

/* ================= LOGIN ================= */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(1200px 800px at 10% 0%, #6366f1 0%, transparent 60%),
              radial-gradient(1000px 700px at 90% 100%, #06b6d4 0%, transparent 55%),
              linear-gradient(135deg, #1e293b 0%, #0b1120 100%);
  padding: 24px;
}
.login-card {
  background: var(--panel);
  padding: 36px;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}
.login-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.login-brand .mark { width: 36px; height: 36px; border-radius: 10px; background: var(--brand); display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 18px; }
.login-brand h1 { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.login-card .sub { color: var(--muted); margin: 4px 0 20px; font-size: 13px; }
.login-card label { display: block; font-size: 12px; color: var(--muted); margin-top: 12px; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; }
.login-card input { width: 100%; padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius); margin-top: 6px; background: var(--panel-2); color: var(--text); }
.login-card input:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px var(--brand-soft); }
.login-card button.primary { width: 100%; padding: 11px 12px; background: var(--brand); color: white; border: 0; border-radius: var(--radius); margin-top: 18px; font-weight: 600; transition: filter .15s; }
.login-card button.primary:hover { filter: brightness(1.05); }
.login-card .err { color: var(--danger); font-size: 13px; margin-top: 10px; min-height: 18px; }
.login-hint { margin-top: 14px; background: var(--panel-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; font-size: 12px; color: var(--muted); line-height: 1.6; }
.login-hint code { background: var(--brand-soft); color: var(--brand); padding: 1px 6px; border-radius: 4px; font-size: 11px; }
.login-lang { position: absolute; top: 20px; inset-inline-end: 20px; }
.login-lang button { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.2); padding: 6px 12px; border-radius: 999px; font-size: 12px; }

/* ================= APP LAYOUT ================= */
.app { display: grid; grid-template-columns: 84px 340px 1fr; height: 100vh; }
body.rtl .app { direction: rtl; }

.rail {
  background: var(--panel);
  border-inline-end: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  gap: 6px;
}
.rail .brand { width: 44px; height: 44px; border-radius: 12px; background: var(--brand); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 18px; margin-bottom: 16px; }
.rail .nav-btn {
  width: 52px; height: 52px; border-radius: 12px; background: transparent; border: 0; color: var(--muted);
  display: grid; place-items: center; position: relative; transition: all .15s;
}
.rail .nav-btn:hover { background: var(--panel-2); color: var(--text); }
.rail .nav-btn.on { background: var(--brand-soft); color: var(--brand); }
.rail .nav-btn svg { width: 22px; height: 22px; }
.rail .nav-btn .badge { position: absolute; top: 4px; inset-inline-end: 4px; background: var(--danger); color: #fff; font-size: 10px; padding: 1px 5px; border-radius: 999px; font-weight: 700; }
.rail .grow { flex: 1; }
.rail .me-avatar { width: 44px; height: 44px; border-radius: 50%; color: #fff; display: grid; place-items: center; font-weight: 700; cursor: pointer; position: relative; }
.rail .me-avatar .status-dot { position: absolute; bottom: -2px; inset-inline-end: -2px; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--panel); background: #cbd5e1; }
.rail .me-avatar .status-dot.available { background: var(--ok); }
.rail .me-avatar .status-dot.busy { background: var(--warn); }
.rail .me-avatar .status-dot.dnd { background: var(--danger); }
.rail .me-avatar .status-dot.away { background: var(--muted); }

.side {
  background: var(--panel);
  border-inline-end: 1px solid var(--border);
  display: flex; flex-direction: column;
  min-width: 0;
}
.side-head {
  padding: 16px 18px 12px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.side-head h2 { margin: 0; font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.side-head .head-actions { display: flex; gap: 4px; }
.side-head .head-actions button { background: var(--panel-2); border: 1px solid var(--border); color: var(--text-2); padding: 5px 8px; border-radius: 8px; font-size: 12px; }
.side-head .head-actions button:hover { background: var(--brand-soft); color: var(--brand); }

.search {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.search input {
  width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel-2);
}
.search input:focus { border-color: var(--brand); outline: none; }

.filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.filters.one-col { grid-template-columns: 1fr; }
.filters select {
  padding: 7px 8px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel-2); color: var(--text); font-size: 13px;
  min-width: 0;
}

.list { flex: 1; overflow-y: auto; overflow-x: hidden; }
.list-item {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  display: flex; align-items: center; gap: 12px;
  transition: background .1s;
}
.list-item:hover { background: var(--panel-2); }
.list-item.active { background: var(--brand-soft); }
.avatar {
  width: 40px; height: 40px; border-radius: 50%; color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 14px;
  flex-shrink: 0; position: relative;
  background-size: cover; background-position: center;
}
.avatar.sm { width: 28px; height: 28px; font-size: 11px; }
.avatar.lg { width: 60px; height: 60px; font-size: 20px; }
.avatar .status-dot {
  position: absolute; bottom: -1px; inset-inline-end: -1px;
  width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--panel); background: #cbd5e1;
}
.avatar .status-dot.available { background: var(--ok); }
.avatar .status-dot.busy { background: var(--warn); }
.avatar .status-dot.dnd { background: var(--danger); }
.avatar .status-dot.away { background: #94a3b8; }
.avatar .lock {
  position: absolute; top: -2px; inset-inline-end: -2px;
  background: var(--warn); color: #fff; font-size: 10px;
  width: 18px; height: 18px; border-radius: 50%; display: grid; place-items: center;
  border: 2px solid var(--panel);
}
.avatar.group { background: linear-gradient(135deg, #6366f1, #06b6d4); }
.avatar.broadcast { background: linear-gradient(135deg, #ef4444, #f59e0b); }
.list-item .meta { min-width: 0; flex: 1; }
.list-item .meta .n { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: flex; align-items: center; gap: 6px; }
.list-item .meta .s { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 2px; }
.list-item .right { text-align: end; font-size: 11px; color: var(--muted); flex-shrink: 0; }
.list-item .right .unread { display: inline-block; background: var(--brand); color: #fff; border-radius: 999px; padding: 2px 7px; font-weight: 700; font-size: 11px; margin-top: 4px; }

.badge {
  display: inline-block; font-size: 10px; padding: 2px 6px; border-radius: 4px;
  background: var(--brand-soft); color: var(--brand); font-weight: 600;
}
.badge.warn { background: #fef3c7; color: #92400e; }
.badge.danger { background: #fee2e2; color: #991b1b; }
.badge.gray { background: var(--panel-2); color: var(--muted); }
[data-theme="dark"] .badge.warn { background: #713f12; color: #fde68a; }
[data-theme="dark"] .badge.danger { background: #7f1d1d; color: #fecaca; }

/* ================= MAIN PANE ================= */
.main { background: var(--panel-2); display: flex; flex-direction: column; min-width: 0; }
.chat-head {
  height: var(--topbar-h);
  padding: 0 20px;
  display: flex; align-items: center; gap: 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.chat-head .who { flex: 1; min-width: 0; }
.chat-head .who .n { font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.chat-head .who .s { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-head .actions { display: flex; gap: 6px; }
.chat-head .actions button {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 7px 10px; color: var(--text-2); font-weight: 500; font-size: 13px;
  display: inline-flex; align-items: center; gap: 6px;
}
.chat-head .actions button:hover { background: var(--brand-soft); color: var(--brand); border-color: transparent; }

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 32px;
  display: flex; flex-direction: column; gap: 4px;
}
.msg-row { display: flex; gap: 10px; margin-top: 8px; }
.msg-row.me { flex-direction: row-reverse; }
.msg-row.same-sender { margin-top: 2px; }
.msg-row.same-sender .avatar { visibility: hidden; }
.msg-row .msg-content { max-width: 62%; display: flex; flex-direction: column; }
.msg-row.me .msg-content { align-items: flex-end; }
.msg-row .sender { font-size: 11px; color: var(--muted); font-weight: 600; margin: 0 6px 3px; }
.bubble {
  padding: 8px 12px; border-radius: 14px;
  background: var(--bubble-them); color: var(--bubble-them-text);
  font-size: 14px; line-height: 1.4; word-wrap: break-word; white-space: pre-wrap;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.msg-row.me .bubble { background: var(--bubble-me); color: var(--bubble-me-text); border-color: transparent; }
.msg-row.me .bubble.deleted { background: var(--panel-2); color: var(--muted); font-style: italic; border: 1px dashed var(--border); }
.bubble.deleted { color: var(--muted); font-style: italic; background: var(--panel-2); border: 1px dashed var(--border); }
.bubble .file { display: flex; align-items: center; gap: 8px; padding: 6px 8px; background: rgba(0,0,0,0.08); border-radius: 8px; margin-top: 6px; }
.msg-row.me .bubble .file { background: rgba(255,255,255,0.18); }
.bubble .file a { color: inherit; font-weight: 600; text-decoration: underline; }
.bubble .file img { max-width: 260px; max-height: 200px; border-radius: 6px; display: block; }
.bubble .reply-quote {
  border-inline-start: 3px solid rgba(255,255,255,0.6);
  padding: 3px 8px; margin: -2px 0 6px; opacity: 0.85; font-size: 12px;
}
.msg-row.them .bubble .reply-quote { border-inline-start-color: var(--brand); }
.bubble .msg-actions {
  position: absolute; top: -14px; inset-inline-end: 4px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 20px;
  padding: 2px 4px; display: none; gap: 2px;
  box-shadow: var(--shadow-md);
}
.bubble:hover .msg-actions { display: flex; }
.bubble .msg-actions button { background: transparent; border: 0; padding: 3px 6px; border-radius: 6px; font-size: 13px; color: var(--muted); }
.bubble .msg-actions button:hover { background: var(--panel-2); color: var(--text); }
.bubble .ts { font-size: 10px; opacity: 0.7; margin-top: 4px; text-align: end; }
.bubble .ts .edited { margin-inline-end: 4px; font-style: italic; }
.reactions { display: flex; gap: 4px; margin-top: 4px; flex-wrap: wrap; }
.reactions .rx {
  background: var(--panel); border: 1px solid var(--border); border-radius: 999px;
  padding: 1px 8px; font-size: 12px; cursor: pointer;
}
.reactions .rx.mine { background: var(--brand-soft); border-color: var(--brand); }
.reactions .rx:hover { background: var(--brand-soft); }

.typing { padding: 6px 32px; font-size: 12px; color: var(--muted); font-style: italic; height: 22px; }

.composer {
  padding: 12px 16px 16px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.reply-preview {
  background: var(--brand-soft); border-inline-start: 3px solid var(--brand);
  padding: 6px 10px; border-radius: 6px; margin-bottom: 8px;
  font-size: 12px; color: var(--text-2); display: flex; align-items: center; gap: 8px;
}
.reply-preview .close-r { margin-inline-start: auto; background: transparent; border: 0; color: var(--muted); }
.composer-row { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea {
  flex: 1; resize: none; border: 1px solid var(--border); border-radius: 20px;
  padding: 10px 16px; min-height: 40px; max-height: 160px; background: var(--panel-2);
}
.composer textarea:focus { border-color: var(--brand); outline: none; }
.composer .icon-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text-2); display: grid; place-items: center;
  flex-shrink: 0;
}
.composer .icon-btn:hover { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.composer .send-btn {
  background: var(--brand); color: #fff; border: 0;
  padding: 0 18px; height: 40px; border-radius: 20px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px;
}
.composer input[type=file] { display: none; }

.empty {
  flex: 1; display: grid; place-items: center; padding: 40px;
  color: var(--muted); text-align: center;
}
.empty .icon {
  width: 88px; height: 88px; border-radius: 24px;
  background: linear-gradient(135deg, var(--brand), #06b6d4); color: #fff;
  display: grid; place-items: center; margin: 0 auto 20px;
  font-size: 40px; font-weight: 800;
}
.empty h2 { color: var(--text); margin: 0 0 8px; font-size: 22px; }

/* ================= MODAL ================= */
.modal-bg { position: fixed; inset: 0; background: rgba(15,23,42,0.6); backdrop-filter: blur(4px); display: grid; place-items: center; z-index: 60; padding: 20px; }
.modal { background: var(--panel); border-radius: var(--radius-lg); padding: 24px; width: 100%; max-width: 640px; max-height: 88vh; overflow: auto; box-shadow: var(--shadow-lg); }
.modal.wide { max-width: 960px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.modal-head h2 { margin: 0; font-size: 18px; }
.modal-head .close { background: transparent; border: 0; color: var(--muted); font-size: 22px; padding: 4px 8px; border-radius: 6px; }
.modal-head .close:hover { background: var(--panel-2); color: var(--text); }
.form-row { display: block; margin-top: 12px; }
.form-row label { display: block; font-size: 12px; color: var(--muted); font-weight: 600; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.02em; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel-2); color: var(--text);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { border-color: var(--brand); outline: none; }
.form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }
.btn { padding: 9px 14px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); border-radius: 8px; font-weight: 500; }
.btn:hover { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.btn.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn.primary:hover { filter: brightness(1.05); background: var(--brand); color: #fff; }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.danger:hover { background: var(--danger); color: #fff; filter: brightness(1.05); }
.btn.small { padding: 5px 10px; font-size: 12px; }

/* ================= CALL OVERLAY ================= */
.call-overlay {
  position: fixed; inset: 0;
  background: rgba(2, 6, 23, 0.94);
  display: grid; place-items: center; z-index: 70; color: #fff;
  backdrop-filter: blur(8px);
}
.call-box {
  background: linear-gradient(180deg, #0f172a, #020617);
  padding: 24px; border-radius: 20px;
  text-align: center; width: min(1000px, 92vw); max-height: 92vh; display: flex; flex-direction: column;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 40px 100px rgba(0,0,0,0.6);
}
.call-title { display: flex; justify-content: center; align-items: center; gap: 10px; margin-bottom: 4px; font-weight: 700; font-size: 18px; }
.call-sub { color: #94a3b8; margin-bottom: 16px; font-size: 14px; }
.videos {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px; margin-bottom: 16px; overflow: auto;
}
.video-tile { position: relative; background: #000; border-radius: 12px; overflow: hidden; aspect-ratio: 4/3; }
.video-tile video { width: 100%; height: 100%; object-fit: cover; background: #000; }
.video-tile .label { position: absolute; bottom: 8px; inset-inline-start: 8px; background: rgba(0,0,0,0.6); color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.video-tile .indicators { position: absolute; top: 8px; inset-inline-end: 8px; display: flex; gap: 4px; }
.video-tile .indicators span { background: rgba(0,0,0,0.6); color: #fff; padding: 2px 6px; border-radius: 4px; font-size: 11px; }
.call-controls { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.call-controls button {
  width: 52px; height: 52px; border-radius: 50%; border: 0; color: #fff;
  background: rgba(255,255,255,0.12); display: grid; place-items: center;
  transition: background .15s;
}
.call-controls button:hover { background: rgba(255,255,255,0.2); }
.call-controls button.on { background: rgba(99, 102, 241, 0.6); }
.call-controls button.end { background: var(--danger); }
.call-controls button.end:hover { background: #ef4444; }
.call-controls svg { width: 22px; height: 22px; }
.incoming .call-controls button { width: auto; height: auto; padding: 10px 20px; border-radius: 999px; font-weight: 600; }
.incoming .accept { background: var(--ok) !important; }
.incoming .decline { background: var(--danger) !important; }

/* ================= TOAST ================= */
.toast {
  position: fixed; top: 20px; inset-inline-end: 20px;
  background: var(--text); color: var(--panel);
  padding: 10px 16px; border-radius: 8px; z-index: 200;
  opacity: 0; transform: translateY(-8px); transition: all .2s;
  max-width: 300px; box-shadow: var(--shadow-lg);
}
.toast.on { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--danger); color: #fff; }
.toast.success { background: var(--ok); color: #fff; }

/* ================= ADMIN CONSOLE ================= */
.admin-wrap { display: flex; height: 100%; }
.admin-nav { width: 220px; border-inline-end: 1px solid var(--border); padding: 12px 8px; background: var(--panel); }
.admin-nav button {
  display: block; width: 100%; text-align: start; padding: 10px 12px; border: 0; border-radius: 8px;
  background: transparent; color: var(--text-2); margin-bottom: 2px; font-weight: 500;
}
.admin-nav button:hover { background: var(--panel-2); color: var(--text); }
.admin-nav button.on { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.admin-content { flex: 1; padding: 24px; overflow: auto; min-width: 0; }
.admin-content h2 { margin: 0 0 16px; font-size: 20px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.stat-card .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; font-weight: 600; }
.stat-card .value { font-size: 28px; font-weight: 700; margin-top: 4px; letter-spacing: -0.02em; }

.data-table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.data-table th, .data-table td { padding: 10px 12px; text-align: start; font-size: 13px; }
.data-table thead { background: var(--panel-2); }
.data-table th { color: var(--muted); text-transform: uppercase; font-size: 11px; letter-spacing: 0.03em; }
.data-table tbody tr { border-top: 1px solid var(--border); }
.data-table tbody tr:hover { background: var(--panel-2); }
.data-table td .row-actions { display: flex; gap: 4px; justify-content: flex-end; }
.data-table code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px; color: var(--muted); }

.audit-hash { font-family: ui-monospace, monospace; font-size: 10px; color: var(--muted); }
.chain-banner { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.chain-banner.ok { background: #dcfce7; color: #14532d; border: 1px solid #86efac; }
.chain-banner.bad { background: #fee2e2; color: #7f1d1d; border: 1px solid #fca5a5; }
[data-theme="dark"] .chain-banner.ok { background: #14532d; color: #bbf7d0; border-color: #16a34a; }
[data-theme="dark"] .chain-banner.bad { background: #7f1d1d; color: #fecaca; border-color: #dc2626; }

/* ================= RESPONSIVE ================= */
@media (max-width: 900px) {
  .app { grid-template-columns: 60px 300px 1fr; }
  .rail { padding-top: 8px; }
  .rail .brand { width: 40px; height: 40px; }
  .rail .nav-btn { width: 44px; height: 44px; }
}
@media (max-width: 700px) {
  /* Hide desktop rail, use bottom tabs; safe-area for iOS notches. */
  .app { grid-template-columns: 1fr; padding-bottom: env(safe-area-inset-bottom); }
  .rail { display: none; }
  .side { display: flex; }
  .side.mobile-hidden { display: none; }
  .main { display: flex; }
  .main.mobile-hidden { display: none; }
  .chat-body { padding: 14px; }
  .msg-row .msg-content { max-width: 82%; }
  .admin-wrap { flex-direction: column; }
  .admin-nav { width: 100%; display: flex; gap: 4px; overflow-x: auto; padding: 8px; }
  .admin-nav button { flex-shrink: 0; }
  .mobile-back { display: inline-flex !important; }
  .chat-head { padding: 0 12px; }
  .composer { padding-bottom: calc(16px + env(safe-area-inset-bottom)); }
  .mobile-tabs {
    display: flex;
    position: fixed;
    inset-inline: 0;
    bottom: 0;
    height: calc(58px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    background: var(--panel);
    border-top: 1px solid var(--border);
    z-index: 40;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.05);
  }
  .app { padding-bottom: calc(58px + env(safe-area-inset-bottom)); }
  .side, .main { padding-bottom: 0; }
}

/* Bottom tab bar (hidden on desktop, shown on small screens) */
.mobile-tabs { display: none; }
.mobile-tabs button {
  flex: 1; background: transparent; border: 0; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  font-size: 10px; font-weight: 600; position: relative;
  transition: color .1s;
}
.mobile-tabs button.on { color: var(--brand); }
.mobile-tabs button svg { width: 22px; height: 22px; }
.mobile-tabs button .badge { position: absolute; top: 8px; inset-inline-end: calc(50% - 20px); background: var(--danger); color: #fff; font-size: 10px; padding: 1px 5px; border-radius: 999px; font-weight: 700; }

/* Back button (shown in chat header on mobile) */
.mobile-back { display: none; background: transparent; border: 0; color: var(--text); font-size: 22px; padding: 4px 8px; border-inline-end: 1px solid var(--border); margin-inline-end: 8px; }

/* ================= Signature card (in-chat) ================= */
.sig-card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 6px;
  box-shadow: var(--shadow-sm);
  color: var(--text);
  max-width: 380px;
}
.msg-row.me .bubble .sig-card { color: var(--text); }
.sig-card .sig-head { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.sig-card .sig-head .icon { width: 30px; height: 30px; border-radius: 8px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; font-size: 16px; }
.sig-card .sig-title { font-weight: 700; margin-top: 4px; }
.sig-card .sig-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.sig-card .sig-actions { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.sig-card .sig-actions .btn { padding: 6px 12px; font-size: 12px; }
.sig-card .status-pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; margin-inline-start: auto; }
.sig-card .status-pill.pending  { background: #fef3c7; color: #92400e; }
.sig-card .status-pill.signed   { background: #dcfce7; color: #166534; }
.sig-card .status-pill.declined { background: #fee2e2; color: #991b1b; }
.sig-card .status-pill.cancelled { background: var(--panel-2); color: var(--muted); }
[data-theme="dark"] .sig-card .status-pill.pending  { background: #713f12; color: #fde68a; }
[data-theme="dark"] .sig-card .status-pill.signed   { background: #14532d; color: #bbf7d0; }
[data-theme="dark"] .sig-card .status-pill.declined { background: #7f1d1d; color: #fecaca; }

/* ================= Sign modal ================= */
.sign-modal .modal { max-width: 900px; }
.sign-split { display: grid; grid-template-columns: 1fr 380px; gap: 16px; }
@media (max-width: 800px) { .sign-split { grid-template-columns: 1fr; } }
.sign-preview { border: 1px solid var(--border); border-radius: 8px; background: var(--panel-2); min-height: 320px; overflow: hidden; }
.sign-preview iframe, .sign-preview img { width: 100%; height: 460px; border: 0; display: block; background: #fff; }
.sign-preview img { object-fit: contain; }
.sig-panel .tabs { display: flex; gap: 4px; margin-bottom: 8px; border-bottom: 1px solid var(--border); }
.sig-panel .tabs button { background: transparent; border: 0; padding: 8px 12px; color: var(--muted); font-weight: 600; border-bottom: 2px solid transparent; }
.sig-panel .tabs button.on { color: var(--brand); border-color: var(--brand); }
.sig-canvas-wrap { border: 1px dashed var(--border-strong); border-radius: 8px; background: #ffffff; height: 200px; position: relative; touch-action: none; }
.sig-canvas-wrap canvas { width: 100%; height: 100%; display: block; touch-action: none; cursor: crosshair; }
.sig-canvas-wrap .sig-hint { position: absolute; inset: 0; display: grid; place-items: center; color: #94a3b8; pointer-events: none; font-size: 13px; font-style: italic; }
.sig-typed-preview { border: 1px dashed var(--border-strong); border-radius: 8px; background: #ffffff; height: 200px; display: grid; place-items: center; font: italic 44px "Snell Roundhand", "Apple Chancery", cursive, serif; color: #0f172a; padding: 0 12px; overflow: hidden; }
.sig-meta { font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.5; }
.sig-meta strong { color: var(--text); font-weight: 600; }

/* ================= Import wizard ================= */
.imp-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 8px 0 16px; }
.imp-stat { background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.imp-stat .k { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; font-weight: 600; }
.imp-stat .v { font-size: 24px; font-weight: 700; margin-top: 2px; }
.imp-stat.ok .v { color: var(--ok); }
.imp-stat.info .v { color: var(--info); }
.imp-stat.bad .v { color: var(--danger); }
.imp-warn { padding: 10px 14px; background: #fef3c7; color: #92400e; border: 1px solid #fbbf24; border-radius: 8px; margin: 8px 0; font-size: 13px; }
[data-theme="dark"] .imp-warn { background: #713f12; color: #fde68a; border-color: #b45309; }
.imp-scroll { max-height: 340px; overflow: auto; border: 1px solid var(--border); border-radius: 8px; margin-top: 8px; }
.imp-table { border: 0; }
.imp-table th { position: sticky; top: 0; background: var(--panel-2); z-index: 1; }
.imp-row.imp-create   { background: rgba(22, 163, 74, 0.06); }
.imp-row.imp-update   { background: rgba(2, 132, 199, 0.06); }
.imp-row.imp-error    { background: rgba(220, 38, 38, 0.08); }
.imp-pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.imp-pill.imp-create { background: #dcfce7; color: #166534; }
.imp-pill.imp-update { background: #dbeafe; color: #1e40af; }
.imp-pill.imp-error  { background: #fee2e2; color: #991b1b; }
[data-theme="dark"] .imp-pill.imp-create { background: #14532d; color: #bbf7d0; }
[data-theme="dark"] .imp-pill.imp-update { background: #1e3a8a; color: #bfdbfe; }
[data-theme="dark"] .imp-pill.imp-error  { background: #7f1d1d; color: #fecaca; }
.imp-err { color: var(--danger); font-size: 11px; margin-top: 3px; }
.imp-controls { padding: 12px 0; }

/* Install button (Settings) */
.install-btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; background: var(--brand); color: #fff; border: 0; border-radius: 8px; font-weight: 600; }
.install-btn:hover { filter: brightness(1.05); }
.install-badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; background: var(--ok); color: #fff; border-radius: 999px; font-size: 12px; font-weight: 600; }

/* ============ Icon helpers (inline SVG) ============ */
.icon { width: 20px; height: 20px; display: inline-block; vertical-align: middle; }

/* Custom scrollbar in dark mode */
[data-theme="dark"] ::-webkit-scrollbar { width: 8px; height: 8px; }
[data-theme="dark"] ::-webkit-scrollbar-track { background: transparent; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #334155; border-radius: 4px; }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: #475569; }