/* ═══════════════════════════════════════════════════════════════
   CHAT APP — style.css
   Covers: base, auth, main app, chat bubbles, composer,
           typing bar, search, file previews, read receipts,
           toast, members modal, admin controls, side panel,
           context menu, responsive breakpoints
═══════════════════════════════════════════════════════════════ */

/* ── Variables ──────────────────────────────────────────────── */
:root {
  --bg1:     #0f172a;
  --bg2:     #111827;
  --card:    #0b1220;
  --card2:   #0e1a2f;
  --text:    #e5e7eb;
  --muted:   #94a3b8;
  --border:  rgba(148,163,184,.18);
  --shadow:  0 18px 60px rgba(0,0,0,.45);
  --primary: #3b82f6;
  --primary2:#60a5fa;
  --danger:  #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;

  /* Transitions */
  --t-fast:  120ms ease;
  --t-base:  200ms ease;
  --t-slow:  320ms ease;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 14px;
  color: var(--text);
  background:
    radial-gradient(800px 420px at 10% 15%, rgba(59,130,246,.35), transparent 60%),
    radial-gradient(700px 420px at 85% 20%, rgba(16,185,129,.18), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  min-height: 100vh;
}

/* ═══════════════════════════════════════════════════════════════
   AUTH OVERLAY
═══════════════════════════════════════════════════════════════ */

.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.98);
  backdrop-filter: blur(20px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity var(--t-slow);
}
.auth-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.auth-card {
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.01));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
  backdrop-filter: blur(25px);
  box-shadow: var(--shadow);
}

/* Logo + tagline inside auth card */
.auth-logo {
  text-align: center;
  margin-bottom: 1.5rem;
}
.logo-big {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), rgba(255,255,255,.12));
  display: inline-grid;
  place-items: center;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}
.auth-logo h2 {
  margin: 0 0 4px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.5px;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.auth-tagline {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

/* Tabs */
.auth-tabs {
  display: flex;
  gap: 1px;
  margin-bottom: 1.75rem;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255,255,255,.06);
}
.auth-tab {
  flex: 1;
  padding: 13px 20px;
  background: none;
  border: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: color var(--t-base);
}
.auth-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff;
}

/* Forms */
.auth-form { display: none; }
.auth-form.active { display: block; }

.auth-field { margin-bottom: 1.25rem; }
.auth-field label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .4px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.auth-field input {
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  color: var(--text);
  outline: none;
  font-size: 14px;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.auth-field input:focus {
  border-color: rgba(96,165,250,.55);
  box-shadow: 0 0 0 4px rgba(59,130,246,.15);
}

/* Password wrapper (input + toggle) */
.pass-wrap {
  position: relative;
}
.pass-wrap input {
  padding-right: 44px;
}
.pass-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15px;
  color: var(--muted);
  padding: 4px;
  line-height: 1;
}

/* Inline error text */
.auth-error {
  display: none;
  font-size: 12px;
  color: var(--danger);
  background: rgba(239,68,68,.08);
  border: 1px solid rgba(239,68,68,.2);
  border-radius: 8px;
  padding: 8px 12px;
  margin-top: -8px;
  margin-bottom: 8px;
}

.auth-actions { margin-top: 1.5rem; }
.auth-btn {
  width: 100%;
  padding: 14px 20px;
  border-radius: 14px;
  border: none;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: opacity var(--t-base), transform var(--t-fast);
}
.auth-btn:active { transform: scale(.98); }
.auth-btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff;
}
.auth-btn:disabled { opacity: .6; cursor: not-allowed; }

/* ═══════════════════════════════════════════════════════════════
   TOAST NOTIFICATION
═══════════════════════════════════════════════════════════════ */

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow);
  max-width: 320px;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity var(--t-base), transform var(--t-base);
}
.toast.toast-show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.toast.toast-success { border-color: rgba(34,197,94,.35);  background: rgba(34,197,94,.12);  color: #86efac; }
.toast.toast-error   { border-color: rgba(239,68,68,.35);  background: rgba(239,68,68,.12);  color: #fca5a5; }
.toast.toast-info    { border-color: rgba(59,130,246,.35); background: rgba(59,130,246,.12); color: var(--primary2); }
.toast.toast-warning { border-color: rgba(245,158,11,.35); background: rgba(245,158,11,.12); color: #fcd34d; }

/* ═══════════════════════════════════════════════════════════════
   MAIN APP SHELL
═══════════════════════════════════════════════════════════════ */

.app {
  width: min(1100px, 100%);
  height: min(760px, 100vh);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  backdrop-filter: blur(10px);
  display: none;
  flex-direction: column;
}
.app.authenticated { display: flex; }

/* ── Top bar ─────────────────────────────────────────────────── */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  flex-shrink: 0;
  gap: 12px;
  flex-wrap: wrap;
}

.brand { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), rgba(255,255,255,.08));
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}
.title   { font-size: 15px; font-weight: 700; }
.subtitle{ font-size: 11px; color: var(--muted); margin-top: 2px; }

.status {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

/* Pills */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text);
  background: rgba(255,255,255,.04);
  white-space: nowrap;
}
.pill-muted { color: var(--muted); }

/* Unread badge pill */
.pill-unread {
  background: rgba(239,68,68,.12);
  border-color: rgba(239,68,68,.3);
  color: #fca5a5;
  font-weight: 600;
  animation: pulse-badge 2s ease infinite;
}
@keyframes pulse-badge {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,.3); }
  50%       { box-shadow: 0 0 0 5px rgba(239,68,68,.0); }
}

.dot      { width: 8px; height: 8px; border-radius: 50%; background: #64748b; flex-shrink: 0; }
.dot-ok   { background: var(--success); }
.dot-bad  { background: var(--danger); }

/* Buttons */
.btn {
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background var(--t-base), border-color var(--t-base), transform var(--t-fast);
  white-space: nowrap;
}
.btn:hover  { background: rgba(255,255,255,.08); }
.btn:active { transform: scale(.97); }

.btn.primary {
  border-color: rgba(59,130,246,.4);
  background: linear-gradient(135deg, rgba(59,130,246,.95), rgba(96,165,250,.75));
  color: #fff;
}
.btn.primary:hover {
  background: linear-gradient(135deg, rgba(59,130,246,1), rgba(96,165,250,.9));
}
.btn.small  { padding: 7px 10px; font-size: 12px; }
.btn.danger {
  border-color: rgba(239,68,68,.3);
  color: #fca5a5;
}
.btn.danger:hover { background: rgba(239,68,68,.1); }

/* ── Search bar (below topbar) ────────────────────────────────── */
.searchbar {
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.015);
  padding: 8px 16px;
  flex-shrink: 0;
}
.search-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
}
.search-icon { font-size: 14px; color: var(--muted); flex-shrink: 0; }
.search-input {
  flex: 1;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.7);
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color var(--t-base), box-shadow var(--t-base);
  width: auto; /* override global input width:100% */
}
.search-input:focus {
  border-color: rgba(96,165,250,.45);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}

/* Search results overlay (absolute inside .chat) */
.search-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  background: rgba(11,18,32,.97);
  backdrop-filter: blur(8px);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.search-result-item {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  font-size: 13px;
  cursor: default;
  transition: background var(--t-base);
}
.search-result-item:hover { background: rgba(255,255,255,.05); }
.search-result-meta {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 4px;
}
.search-result-text { color: var(--text); line-height: 1.5; }
.search-result-text mark {
  background: rgba(251,191,36,.25);
  color: #fcd34d;
  border-radius: 3px;
  padding: 0 2px;
}

/* ── Join bar ─────────────────────────────────────────────────── */
.joinbar {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.02);
  flex-shrink: 0;
}
.field      { flex: 1; min-width: 140px; }
.small-field{ max-width: 130px; flex: 0 0 130px; }

label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3px;
  color: var(--muted);
  margin-bottom: 4px;
}

select, input {
  width: 100%;
  padding: 9px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  color: var(--text);
  outline: none;
  font-size: 13px;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
input:focus, select:focus {
  border-color: rgba(96,165,250,.55);
  box-shadow: 0 0 0 4px rgba(59,130,246,.15);
}
select option { background: var(--card); }

/* ── Layout grid ─────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 1fr 268px;
  flex: 1;
  min-height: 0; /* critical: prevents overflow in flex parent */
}

/* ═══════════════════════════════════════════════════════════════
   CHAT COLUMN
═══════════════════════════════════════════════════════════════ */

.chat {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  border-right: 1px solid var(--border);
  position: relative; /* for search-overlay */
}

/* Message list */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}
.messages::-webkit-scrollbar { width: 4px; }
.messages::-webkit-scrollbar-thumb { background: rgba(148,163,184,.2); border-radius: 4px; }

/* History separator */
.history-sep {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  margin: 4px 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.history-sep::before,
.history-sep::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Empty state */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  padding: 40px;
  text-align: center;
}
.empty-state .empty-icon { font-size: 36px; opacity: .5; }

/* ── Chat bubbles ─────────────────────────────────────────────── */
.bubble {
  max-width: 76%;
  padding: 10px 13px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.9);
  line-height: 1.4;
  transition: opacity var(--t-base);
}
.bubble:hover { opacity: .95; }

.bubble .meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 5px;
}
.bubble .meta .msg-time { flex-shrink: 0; }

.bubble .text {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.5;
}

/* My messages */
.bubble.me {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(37,99,235,.9), rgba(96,165,250,.5));
  border-color: rgba(96,165,250,.3);
}

/* Other people's messages */
.bubble.other { align-self: flex-start; }

/* System messages */
.bubble.system {
  align-self: center;
  max-width: 90%;
  padding: 7px 14px;
  background: rgba(16,185,129,.1);
  border-color: rgba(16,185,129,.3);
  color: #a7f3d0;
  font-size: 12px;
  border-radius: 999px;
}

/* File preview inside bubble */
.bubble img {
  max-width: 260px;
  max-height: 200px;
  border-radius: 10px;
  display: block;
  margin-bottom: 6px;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: opacity var(--t-base);
}
.bubble img:hover { opacity: .9; }

.bubble .file-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary2);
  font-size: 13px;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid rgba(96,165,250,.2);
  background: rgba(96,165,250,.06);
  margin-bottom: 4px;
  transition: background var(--t-base);
}
.bubble .file-link:hover { background: rgba(96,165,250,.12); }

/* Read receipt row (below my bubble) */
.receipt-row {
  font-size: 10px;
  color: var(--muted);
  text-align: right;
  margin-top: 3px;
  padding-right: 2px;
  transition: color var(--t-base);
}
.receipt-row.read { color: var(--primary2); }

/* Edited tag */
.edited-tag {
  font-size: 10px;
  color: var(--muted);
  margin-left: 4px;
  font-style: italic;
}

/* Context menu trigger hint */
.bubble.me { cursor: context-menu; }

/* ── Typing indicator ─────────────────────────────────────────── */
.typing-bar {
  min-height: 22px;
  padding: 3px 18px;
  font-size: 12px;
  color: var(--muted);
  font-style: italic;
  line-height: 1.4;
  transition: opacity var(--t-base);
  flex-shrink: 0;
}
.typing-bar:empty { opacity: 0; }

/* Animated dots when typing */
.typing-bar::after {
  content: '';
  display: inline-block;
}
.typing-bar:not(:empty)::after {
  content: '●●●';
  display: inline-block;
  font-size: 8px;
  letter-spacing: 2px;
  margin-left: 4px;
  animation: typing-dots 1.2s ease infinite;
  vertical-align: middle;
  color: var(--primary2);
  font-style: normal;
}
@keyframes typing-dots {
  0%, 100% { opacity: .3; }
  50%       { opacity: 1;  }
}

/* ── Composer ─────────────────────────────────────────────────── */
.composer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,.02);
  flex-shrink: 0;
}

.composer input#message {
  flex: 1;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  color: var(--text);
  font-size: 14px;
  outline: none;
  width: auto; /* override global */
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.composer input#message:focus {
  border-color: rgba(96,165,250,.45);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}

/* Attach button */
.attach-btn {
  padding: 9px 10px;
  color: var(--muted);
  flex-shrink: 0;
}
.attach-btn:hover { color: var(--primary2); }
.attach-btn svg   { display: block; }

/* Send button */
.send-btn {
  padding: 9px 14px;
  flex-shrink: 0;
}
.send-btn svg { display: block; }

/* Character counter */
.char-count {
  font-size: 11px;
  text-align: right;
  padding: 2px 16px 4px;
  color: var(--muted);
  flex-shrink: 0;
}

/* ── Context menu ─────────────────────────────────────────────── */
.context-menu {
  position: fixed;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px;
  z-index: 9999;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0,0,0,.45);
  animation: ctx-in var(--t-fast) ease;
}
@keyframes ctx-in {
  from { opacity: 0; transform: scale(.95); }
  to   { opacity: 1; transform: scale(1); }
}
.context-menu button {
  display: block;
  width: 100%;
  padding: 9px 13px;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  border-radius: 8px;
  text-align: left;
  font-size: 13px;
  transition: background var(--t-fast);
}
.context-menu button:hover       { background: rgba(255,255,255,.06); }
.context-menu button.danger-item { color: var(--danger); }
.context-menu button.danger-item:hover { background: rgba(239,68,68,.1); }

/* ═══════════════════════════════════════════════════════════════
   SIDE PANEL
═══════════════════════════════════════════════════════════════ */

.side {
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,.015);
  min-height: 0;
  overflow: hidden;
}

.side-section {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}
.side-section-online { flex: 0 0 auto; max-height: 220px; }

.side-divider {
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
}

.side-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.side-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--muted);
}

.log {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.log::-webkit-scrollbar { width: 3px; }
.log::-webkit-scrollbar-thumb { background: rgba(148,163,184,.15); border-radius: 3px; }

.log-item {
  padding: 7px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  font-size: 12px;
  line-height: 1.4;
}

/* Online log — clickable user rows */
.online-log { gap: 4px; }
.online-user-row {
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: background var(--t-base);
  font-size: 12px;
}
.online-user-row:hover {
  background: rgba(255,255,255,.05);
  border-color: rgba(96,165,250,.2);
}
.online-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}
.online-name { flex: 1; font-size: 12px; color: var(--text); }
.online-id   { font-size: 10px; color: var(--muted); font-family: monospace; }

/* ═══════════════════════════════════════════════════════════════
   MEMBERS MODAL
═══════════════════════════════════════════════════════════════ */

.members-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in var(--t-base) ease;
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.members-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  min-width: 300px;
  max-width: 420px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: slide-up var(--t-base) ease;
}
@keyframes slide-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.members-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.members-title {
  font-size: 15px;
  font-weight: 700;
}
.members-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background var(--t-base);
}
.members-close:hover { background: rgba(255,255,255,.06); color: var(--text); }

.member-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.member-row:last-child { border-bottom: none; }
.member-info { flex: 1; min-width: 0; }
.member-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.member-meta {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}
.role-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
  margin-right: 4px;
}
.role-owner  { background: rgba(245,158,11,.15); color: #fcd34d; border: 1px solid rgba(245,158,11,.3); }
.role-admin  { background: rgba(96,165,250,.15);  color: var(--primary2); border: 1px solid rgba(96,165,250,.3); }
.role-member { background: rgba(148,163,184,.1);  color: var(--muted); border: 1px solid var(--border); }

.kick-btn {
  padding: 5px 10px;
  font-size: 11px;
  border-radius: 8px;
  border: 1px solid rgba(239,68,68,.25);
  background: rgba(239,68,68,.06);
  color: #fca5a5;
  cursor: pointer;
  transition: background var(--t-base);
  flex-shrink: 0;
}
.kick-btn:hover { background: rgba(239,68,68,.15); }

/* ═══════════════════════════════════════════════════════════════
   SCROLLBARS (global)
═══════════════════════════════════════════════════════════════ */
::-webkit-scrollbar       { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(148,163,184,.2); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: rgba(148,163,184,.35); }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════
   CONVERSATION SIDEBAR (left panel)
═══════════════════════════════════════════════════════════════ */

.layout {
  grid-template-columns: 280px 1fr 268px;
}

.conv-sidebar {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: rgba(255,255,255,.01);
  min-height: 0;
  overflow: hidden;
}

/* Search inside sidebar */
.conv-search-wrap {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.conv-search {
  width: 100%;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color var(--t-base);
}
.conv-search:focus {
  border-color: rgba(96,165,250,.45);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}

/* Tabs */
.conv-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.conv-tab {
  flex: 1;
  padding: 10px 6px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color var(--t-base), border-color var(--t-base);
}
.conv-tab:hover  { color: var(--text); }
.conv-tab.active {
  color: var(--primary2);
  border-bottom-color: var(--primary2);
}

/* New group row */
.new-group-row {
  display: flex;
  gap: 6px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.new-group-input {
  flex: 1;
  padding: 7px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  color: var(--text);
  font-size: 12px;
  outline: none;
  min-width: 0;
}
.new-group-input:focus {
  border-color: rgba(96,165,250,.45);
}

/* Scrollable list */
.conv-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 0;
}
.conv-list::-webkit-scrollbar { width: 3px; }
.conv-list::-webkit-scrollbar-thumb { background: rgba(148,163,184,.15); border-radius: 3px; }

.conv-empty {
  padding: 24px 16px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

/* Individual conversation row */
.conv-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  border-radius: 10px;
  margin: 2px 6px;
  transition: background var(--t-base);
  position: relative;
}
.conv-item:hover    { background: rgba(255,255,255,.05); }
.conv-item.active   {
  background: rgba(59,130,246,.15);
  border: 1px solid rgba(59,130,246,.25);
}

/* Avatar circle */
.conv-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), rgba(96,165,250,.5));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
  color: #fff;
  text-transform: uppercase;
}
.conv-avatar.group-avatar {
  background: linear-gradient(135deg, rgba(16,185,129,.7), rgba(59,130,246,.5));
  border-radius: 10px;
}

/* Text content */
.conv-info { flex: 1; min-width: 0; }
.conv-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text);
}
.conv-preview {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

/* Unread badge on conv row */
.conv-badge {
  min-width: 18px;
  height: 18px;
  background: var(--danger);
  color: #fff;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  flex-shrink: 0;
}

/* Time label */
.conv-time {
  font-size: 10px;
  color: var(--muted);
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 2px;
}

/* ── Chat header (replaces join bar) ──────────────────────── */
.chat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  flex-shrink: 0;
  min-width: 0;
}
.back-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 16px;
  flex-shrink: 0;
  display: none; /* shown on mobile only */
  transition: background var(--t-base);
}
.back-btn:hover { background: rgba(255,255,255,.06); }
.chat-header-info { flex: 1; min-width: 0; }
.chat-header-name {
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chat-header-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 1px;
}
.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.searchbar-inline {
  display: flex;
  align-items: center;
  gap: 4px;
}
.searchbar-inline .search-input {
  width: 140px;
  padding: 6px 10px;
  font-size: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(15,23,42,.8);
  color: var(--text);
  outline: none;
}

/* No chat selected placeholder */
.no-chat-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  text-align: center;
  padding: 40px;
}

/* ── Mobile activity drawer ───────────────────────────────────── */
/* Floating toggle button shown only on mobile */
.activity-toggle {
  display: none;
  position: fixed;
  bottom: 80px;
  right: 14px;
  z-index: 100;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 42px;
  height: 42px;
  font-size: 18px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,.4);
  align-items: center;
  justify-content: center;
  transition: transform var(--t-base);
}
.activity-toggle:active { transform: scale(.92); }

/* Drawer slides up from bottom on mobile */
.side-drawer {
  display: none; /* hidden on mobile by default, shown via .open */
  position: fixed;
  inset: auto 0 0 0;
  z-index: 99;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-radius: 18px 18px 0 0;
  max-height: 55vh;
  overflow-y: auto;
  padding: 12px 14px 24px;
  box-shadow: 0 -8px 30px rgba(0,0,0,.5);
  animation: drawer-up .22s ease;
}
@keyframes drawer-up {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}
.drawer-handle {
  width: 36px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 14px;
}
.drawer-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 10px;
}

/* ── Tablet (≤ 1100px): hide right activity panel ────────────── */
@media (max-width: 1100px) {
  .layout { grid-template-columns: 260px 1fr; }
  .side   { display: none; }
  .activity-toggle { display: flex; }
}

/* ── Mobile (≤ 768px): full-screen single-panel navigation ────── */
@media (max-width: 768px) {
  body { padding: 0; }

  .app {
    border-radius: 0;
    width: 100%;
    height: 100dvh;
    max-height: none;
  }

  /* Layout becomes a single-column stack,
     but we use a flex row with overflow hidden
     to slide between panels */
  .layout {
    display: flex;
    flex-direction: row;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    width: 100%;
  }

  /* Conv sidebar: full width, slides in/out */
  .conv-sidebar {
    min-width: 100%;
    width: 100%;
    flex-shrink: 0;
    transition: transform 0.28s ease, opacity 0.28s ease;
    transform: translateX(0);
    opacity: 1;
    background: var(--bg2);
    border-right: none;
    z-index: 2;
  }
  .conv-sidebar.hidden-mobile {
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
    position: absolute;
  }

  /* Chat panel: full width */
  .chat {
    min-width: 100%;
    width: 100%;
    flex-shrink: 0;
    transition: transform 0.28s ease, opacity 0.28s ease;
    transform: translateX(0);
    opacity: 1;
  }
  /* Hide chat until a conv is selected */
  .chat.hidden-mobile {
    transform: translateX(100%);
    opacity: 0;
    pointer-events: none;
    position: absolute;
  }

  .side            { display: none; }
  .activity-toggle { display: flex; }

  /* Back button visible on mobile */
  .back-btn { display: flex !important; }

  /* Topbar compact */
  .topbar { padding: 10px 12px; flex-wrap: wrap; gap: 6px; }
  .status { flex-wrap: wrap; gap: 5px; }
  #channelPill,
  #unreadPill     { display: none !important; }
  #statusPill     { font-size: 11px; padding: 5px 8px; }
  #logoutBtn      { margin-left: auto; }

  /* Hide inline search in chat header on mobile (use activity drawer instead) */
  .chat-header-actions .searchbar-inline { display: none; }

  /* Chat header compact */
  .chat-header { padding: 8px 10px; gap: 8px; }
  .chat-header-name { font-size: 13px; }

  /* Bubbles wider on small screens */
  .bubble { max-width: 90%; }

  /* Images in bubbles: full bubble width */
  .bubble img { max-width: 100%; max-height: 180px; }

  /* Composer compact */
  .composer { padding: 8px 10px; gap: 6px; }
  .attach-btn { padding: 9px 10px; flex-shrink: 0; }
  .composer input#message { font-size: 14px; min-width: 0; flex: 1; }
  .send-btn { padding: 9px 12px; flex-shrink: 0; }

  /* Messages area */
  .messages { padding: 12px 10px; }
  .typing-bar { padding: 3px 12px; }

  /* Conv list items slightly bigger touch targets */
  .conv-item { padding: 12px 12px; }
  .conv-avatar { width: 42px; height: 42px; font-size: 16px; }

  /* Auth card */
  .auth-card { padding: 1.5rem 1.25rem; }
  .auth-logo h2 { font-size: 22px; }
}

/* ── Utility ──────────────────────────────────────────────────── */
.hidden   { display: none !important; }
.sr-only  {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}