/* ==========================================================================
   ChatRooms — style.css
   Palette: dark bg · indigo accent · Inter font
   ========================================================================== */

:root {
  --bg:             #0f0f13;
  --surface:        #1a1a24;
  --surface-raised: #22222f;
  --border:         #2e2e3f;
  --accent:         #6366f1;
  --accent-hover:   #4f46e5;
  --accent-dim:     rgba(99, 102, 241, 0.14);
  --text:           #f0f0f5;
  --text-secondary: #9090a8;
  --text-muted:     #5c5c75;
  --success:        #22c55e;
  --error:          #ef4444;
  --radius:         12px;
  --radius-sm:      8px;
  --radius-xs:      6px;
  --radius-full:    9999px;
  --shadow:         0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-sm:      0 2px 8px  rgba(0, 0, 0, 0.30);
  --nav-h:          56px;
  --sidebar-w:      280px;
  --t:              150ms ease;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background:  var(--bg);
  color:       var(--text);
  font-size:   14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Scrollbar ──────────────────────────────────────────────────────── */
::-webkit-scrollbar              { width: 5px; height: 5px; }
::-webkit-scrollbar-track        { background: transparent; }
::-webkit-scrollbar-thumb        { background: var(--border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover  { background: var(--text-muted); }

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn {
  display:         inline-flex;
  align-items:     center;
  justify-content: center;
  gap:             6px;
  padding:         0 16px;
  height:          38px;
  border:          none;
  border-radius:   var(--radius-sm);
  font-size:       14px;
  font-weight:     500;
  font-family:     inherit;
  cursor:          pointer;
  transition:      background var(--t), opacity var(--t);
  white-space:     nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-ghost   { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--surface-raised); color: var(--text); }

.btn-danger  { background: var(--error); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(0.88); }

.btn-full    { width: 100%; }

.btn-icon {
  width: 32px; height: 32px; padding: 0;
  background: transparent; border: none;
  border-radius: var(--radius-xs);
  cursor: pointer; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: background var(--t), color var(--t);
}
.btn-icon:hover { background: var(--surface-raised); color: var(--text); }

/* ── Form elements ──────────────────────────────────────────────────── */
.form-group  { display: flex; flex-direction: column; gap: 6px; }
.form-label  { font-size: 13px; font-weight: 500; color: var(--text-secondary); }

.form-input {
  width:         100%;
  padding:       10px 14px;
  background:    var(--surface-raised);
  border:        1px solid var(--border);
  border-radius: var(--radius-sm);
  color:         var(--text);
  font-size:     14px;
  font-family:   inherit;
  outline:       none;
  transition:    border-color var(--t), box-shadow var(--t);
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
  border-color: var(--accent);
  box-shadow:   0 0 0 3px var(--accent-dim);
}
.form-input.error { border-color: var(--error); }
textarea.form-input { resize: vertical; min-height: 80px; }

.field-error { font-size: 12px; color: var(--error); min-height: 16px; }

.form-error {
  padding:       10px 14px;
  background:    rgba(239, 68, 68, 0.10);
  border:        1px solid rgba(239, 68, 68, 0.28);
  border-radius: var(--radius-sm);
  color:         var(--error);
  font-size:     13px;
  display:       none;
}
.form-error.visible { display: block; }

/* ── Auth pages ─────────────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px 16px;
}

.auth-card {
  width: 100%; max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
}

.auth-brand {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 32px;
}
.auth-brand-icon {
  width: 34px; height: 34px;
  background: var(--accent); border-radius: var(--radius-xs);
  display: flex; align-items: center; justify-content: center;
  color: #fff; flex-shrink: 0;
}
.auth-brand-name { font-size: 18px; font-weight: 700; }

.auth-heading    { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.auth-subheading { font-size: 14px; color: var(--text-secondary); margin-bottom: 28px; }
.auth-form       { display: flex; flex-direction: column; gap: 18px; }

.auth-footer {
  margin-top: 24px; text-align: center;
  font-size: 13px; color: var(--text-secondary);
}
.auth-footer a { font-weight: 500; }

/* ── Navbar ─────────────────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 20px; gap: 12px;
  z-index: 100;
}

.navbar-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; flex-shrink: 0;
}
.navbar-brand-icon {
  width: 28px; height: 28px;
  background: var(--accent); border-radius: var(--radius-xs);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
}
.navbar-brand-name { font-size: 16px; font-weight: 700; color: var(--text); }
.navbar-spacer     { flex: 1; }

.user-menu         { position: relative; }
.user-menu-trigger {
  display: flex; align-items: center; gap: 9px;
  padding: 5px 10px;
  background: transparent; border: none;
  border-radius: var(--radius-sm);
  cursor: pointer; color: var(--text); font-family: inherit;
  transition: background var(--t);
}
.user-menu-trigger:hover { background: var(--surface-raised); }

.user-avatar {
  width: 30px; height: 30px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #fff;
  overflow: hidden; flex-shrink: 0;
}
.user-avatar img { width: 100%; height: 100%; object-fit: cover; }
.user-display-name { font-size: 14px; font-weight: 500; }

.chevron { font-size: 10px; color: var(--text-muted); }

.dropdown-menu {
  position: absolute; top: calc(100% + 6px); right: 0;
  min-width: 176px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  overflow: hidden; z-index: 200;
  display: none;
}
.dropdown-menu.open { display: block; }

.dropdown-item {
  display: block; width: 100%;
  padding: 10px 16px;
  background: transparent; border: none;
  text-align: left; color: var(--text);
  font-size: 14px; font-family: inherit;
  cursor: pointer;
  transition: background var(--t);
}
.dropdown-item:hover { background: rgba(255,255,255,0.06); }
.dropdown-item.danger { color: var(--error); }
.dropdown-divider { height: 1px; background: var(--border); }

/* ── App layout ─────────────────────────────────────────────────────── */
.app-layout {
  display: flex;
  height: 100vh;       /* fallback for browsers without dvh */
  height: 100dvh;      /* shrinks when the mobile keyboard opens */
  padding-top: var(--nav-h);
  overflow: hidden;
}

/* ── Sidebar ────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}
.sidebar-title { font-size: 14px; font-weight: 600; }

.sidebar-new-btn {
  display: flex; align-items: center; gap: 4px;
  padding: 4px 10px; height: 28px;
  font-size: 12px; font-weight: 600; font-family: inherit;
  background: var(--accent-dim); color: var(--accent);
  border: none; border-radius: var(--radius-xs);
  cursor: pointer; transition: background var(--t);
}
.sidebar-new-btn:hover { background: rgba(99,102,241,0.24); }

.room-list          { flex: 1; overflow-y: auto; padding: 6px; }
.room-list-empty    {
  padding: 40px 16px; text-align: center;
  color: var(--text-muted); font-size: 13px; line-height: 1.7;
}

.room-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--t);
}
.room-item:hover  { background: var(--surface-raised); }
.room-item.active { background: var(--accent-dim); }
.room-item.active .room-name { color: var(--accent); }

.room-icon {
  width: 38px; height: 38px; flex-shrink: 0;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700; color: #fff;
}

.room-info    { flex: 1; min-width: 0; }
.room-name    {
  font-size: 14px; font-weight: 600; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.room-preview {
  font-size: 12px; color: var(--text-muted); margin-top: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.room-meta   { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; flex-shrink: 0; }
.room-time   { font-size: 11px; color: var(--text-muted); }
.unread-badge {
  background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 700;
  padding: 1px 6px; border-radius: var(--radius-full);
  min-width: 18px; text-align: center;
}

/* ── Main panel ─────────────────────────────────────────────────────── */
.main-panel {
  flex: 1; overflow: hidden;
  display: flex; flex-direction: column;
}

.empty-state {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 14px; padding: 40px; text-align: center;
}
.empty-state-icon  { font-size: 52px; opacity: 0.35; line-height: 1; }
.empty-state-title { font-size: 18px; font-weight: 600; color: var(--text-secondary); }
.empty-state-body  { font-size: 14px; color: var(--text-muted); max-width: 260px; line-height: 1.7; }

/* ── Room panel ─────────────────────────────────────────────────────── */
.room-panel { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* Row container holding chat column + members panel */
.room-body {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* Chat column (messages + input bar) */
.chat-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.room-header {
  padding: 0 20px;
  height: 56px; flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  background: var(--surface);
}
.room-header-name   { font-size: 16px; font-weight: 700; }
.room-header-meta   { font-size: 12px; color: var(--text-muted); margin-top: 2px; display: block; }
.room-header-spacer { flex: 1; }

.ws-status {
  padding:    6px 20px;
  font-size:  12px;
  text-align: center;
  flex-shrink: 0;
}
.ws-status.connecting { background: rgba(245,158,11,0.10); color: #f59e0b; }
.ws-status.error      { background: rgba(239,68,68,0.10);  color: var(--error); }

.chat-area {
  flex: 1; overflow-y: auto;
  padding: 16px 20px 8px;
  display: flex; flex-direction: column; gap: 6px;
}

/* ── Message row — horizontal (avatar + body) ─────────────────────────── */
.message-row {
  display: flex;
  flex-direction: row;
  align-items: flex-end;
  gap: 8px;
  max-width: 82%;
  margin-bottom: 2px;
}
.message-row.own   { align-self: flex-end;   flex-direction: row-reverse; }
.message-row.other { align-self: flex-start; }

/* ── Avatar ───────────────────────────────────────────────────────────── */
.msg-avatar {
  width: 30px; height: 30px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; color: #fff;
  overflow: hidden;
  flex-shrink: 0;
  align-self: flex-end;
  transition: opacity var(--t), transform var(--t);
  text-decoration: none;
  cursor: default;
}
.msg-avatar.clickable { cursor: pointer; }
.msg-avatar.clickable:hover { opacity: 0.8; transform: scale(1.08); }
.msg-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ── Message body (name + bubble + time) ────────────────────────────────── */
.msg-body {
  display: flex; flex-direction: column;
  min-width: 0;
}
.message-row.own   .msg-body { align-items: flex-end; }
.message-row.other .msg-body { align-items: flex-start; }

.message-sender { font-size: 11px; color: var(--text-muted); margin-bottom: 3px; padding: 0 4px; }

.message-bubble {
  padding: 9px 13px;
  border-radius: var(--radius-sm);
  font-size: 14px; line-height: 1.55;
  word-break: break-word;
}
.message-row.own   .message-bubble { background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.message-row.other .message-bubble { background: var(--surface-raised); color: var(--text); border-bottom-left-radius: 4px; }

.message-bubble audio { display: block; width: 220px; margin: 2px 0; }
.message-bubble img   { max-width: 240px; border-radius: var(--radius-xs); display: block; cursor: zoom-in; }

.message-bubble.media { background: none; padding: 0; border-radius: var(--radius-sm); overflow: hidden; }
.message-bubble.media img { max-width: 240px; border-radius: var(--radius-sm); }

.message-time {
  font-size: 10px; color: var(--text-muted);
  margin-top: 3px; padding: 0 4px;
}

/* ── Members panel ──────────────────────────────────────────────────────── */
.members-panel {
  width: 220px;
  flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.members-panel-header {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--text-muted);
  text-transform: uppercase;
  flex-shrink: 0;
}

.members-list { flex: 1; overflow-y: auto; padding: 6px; }

.member-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--t);
}
.member-item:hover { background: var(--surface-raised); }

.member-avatar-wrap { position: relative; flex-shrink: 0; }

.member-av {
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #fff;
  overflow: hidden;
}
.member-av img { width: 100%; height: 100%; object-fit: cover; }

.member-status-dot {
  position: absolute;
  bottom: -1px; right: -1px;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid var(--surface);
}
.member-status-dot.online  { background: var(--success); }
.member-status-dot.offline { background: var(--text-muted); }

.member-info { flex: 1; min-width: 0; }

.member-name {
  font-size: 13px; font-weight: 500; color: var(--text);
  display: flex; align-items: center; gap: 4px; min-width: 0;
}
.member-name-text {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  min-width: 0; flex-shrink: 1;
}
.member-item.offline .member-name-text { color: var(--text-secondary); }

.member-username {
  font-size: 11px; color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.creator-tag {
  display: inline-block;
  font-size: 10px; font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 4px;
  padding: 1px 5px;
  margin-left: 5px;
  vertical-align: middle;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

/* Members toggle button — hidden on desktop */
.rp-members-btn { display: none; }

/* Backdrop for mobile drawer */
.members-backdrop {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 19;
}

/* ── Profile modal ──────────────────────────────────────────────────────── */
.profile-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: pm-backdrop 0.15s ease;
}
@keyframes pm-backdrop {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.profile-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  width: 100%;
  max-width: 320px;
  padding: 28px 24px 24px;
  position: relative;
  animation: pm-slide 0.15s ease;
}
@keyframes pm-slide {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.profile-modal-close {
  position: absolute;
  top: 12px; right: 12px;
  width: 28px; height: 28px;
  background: transparent;
  border: none;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--t), color var(--t);
}
.profile-modal-close:hover { background: var(--surface-raised); color: var(--text); }

.profile-modal-avatar {
  width: 68px; height: 68px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; color: #fff;
  overflow: hidden;
  margin: 0 auto 14px;
  flex-shrink: 0;
}
.profile-modal-avatar img { width: 100%; height: 100%; object-fit: cover; }

.profile-modal-name {
  font-size: 17px; font-weight: 700;
  text-align: center;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.profile-modal-username {
  font-size: 13px; color: var(--text-muted);
  text-align: center;
}
.profile-modal-divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}
.profile-modal-bio {
  font-size: 13px; color: var(--text-secondary);
  text-align: center; line-height: 1.6;
}
.profile-modal-meta {
  font-size: 12px; color: var(--text-muted);
  text-align: center;
}
.profile-modal-actions {
  margin-top: 20px;
}

/* ── Image lightbox ─────────────────────────────────────────────────── */
.img-lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  cursor: zoom-out;
  animation: lb-backdrop 0.18s ease;
}
@keyframes lb-backdrop {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.img-lightbox img {
  max-width: 100%;
  max-height: calc(100dvh - 40px);
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 48px rgba(0, 0, 0, 0.8);
  cursor: default;
  animation: lb-scale 0.18s ease;
  user-select: none;
}
@keyframes lb-scale {
  from { opacity: 0; transform: scale(0.93); }
  to   { opacity: 1; transform: scale(1); }
}
.img-lightbox-close {
  position: fixed;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: rgba(255, 255, 255, 0.14);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--t);
}
.img-lightbox-close:hover { background: rgba(255, 255, 255, 0.26); }

.system-message {
  align-self: center;
  font-size: 12px; color: var(--text-muted);
  padding: 4px 12px;
  background: var(--surface-raised);
  border-radius: var(--radius-full);
  margin: 6px 0;
}

.chat-input-bar {
  padding: 12px 16px;
  padding-bottom: max(12px, env(safe-area-inset-bottom)); /* iOS home indicator */
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); flex-shrink: 0;
}
.chat-input {
  flex: 1;
  padding: 9px 14px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text); font-size: 14px; font-family: inherit;
  outline: none; transition: border-color var(--t);
}
.chat-input:focus { border-color: var(--accent); }

/* ── Modal ──────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(2px);
  display: none;
  align-items: center; justify-content: center;
  padding: 24px; z-index: 300;
}
.modal-overlay.open { display: flex; }

.modal {
  width: 100%; max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close {
  width: 28px; height: 28px;
  background: transparent; border: none;
  border-radius: var(--radius-xs);
  cursor: pointer; color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; transition: background var(--t);
}
.modal-close:hover { background: var(--surface-raised); color: var(--text); }

.modal-body   { padding: 24px; display: flex; flex-direction: column; gap: 18px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
}

/* ── Join page ──────────────────────────────────────────────────────── */
.join-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px 16px;
}
.join-card {
  width: 100%; max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  text-align: center;
}
.join-icon {
  width: 64px; height: 64px; margin: 0 auto 20px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 800; color: #fff;
}
.join-room-name    { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.join-room-desc    { font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; }
.join-member-count { font-size: 13px; color: var(--text-muted); margin-bottom: 28px; }
.join-actions      { display: flex; gap: 10px; }

/* ── Loading / spinner ──────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
  flex: 1; display: flex;
  align-items: center; justify-content: center; gap: 12px;
  color: var(--text-secondary);
}

/* ── Toast ──────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 400; display: flex; flex-direction: column; gap: 10px;
}
.toast {
  padding: 11px 18px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  font-size: 13px; color: var(--text); max-width: 300px;
  animation: slideIn 0.2s ease;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--error); }
@keyframes slideIn {
  from { transform: translateX(16px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ── Back button (mobile only) ──────────────────────────────────────── */
.rp-back-btn { display: none; }

/* ── Utility ────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

/* Narrow sidebar on wide tablets */
@media (max-width: 1024px) {
  :root { --sidebar-w: 240px; }
}

/* ── Mobile ≤ 768px ─────────────────────────────────────────────────── */
@media (max-width: 768px) {

  /* Navbar */
  .navbar { padding: 0 12px; gap: 8px; }
  .user-display-name { display: none; }

  /* Auth / join cards */
  .auth-card { padding: 28px 20px; }
  .join-card { padding: 24px 16px; }

  /* App layout: show one pane at a time */
  .sidebar {
    width: 100%;
    border-right: none;
  }

  /* Main panel hidden by default on mobile */
  .main-panel { display: none; }

  /* When a room is open: swap panes */
  .app-layout.room-open .sidebar     { display: none; }
  .app-layout.room-open .main-panel  {
    display: flex;
    animation: panel-in 0.18s ease;
  }

  /* Members panel: slide-in drawer from right */
  .members-panel {
    position: absolute;
    right: 0; top: 0; bottom: 0;
    width: 260px;
    max-width: 85%;
    z-index: 20;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    box-shadow: -6px 0 24px rgba(0, 0, 0, 0.4);
  }
  .room-body.members-open .members-panel  { transform: translateX(0); }
  .room-body.members-open .members-backdrop { display: block; }

  /* Show toggle buttons in room header */
  .rp-back-btn    { display: flex; }
  .rp-members-btn { display: flex; }

  /* Room header */
  .room-header { padding: 0 10px; gap: 8px; }

  /* Collapse "Copy Invite Link" to an icon on mobile */
  .rp-copy-label { display: none; }
  .rp-copy-btn   { width: 32px; padding: 0; }

  /* Chat */
  .chat-area      { padding: 12px 10px 6px; }
  .chat-input-bar { padding: 8px 10px; gap: 6px; }

  /* Messages */
  .message-row          { max-width: 90%; }
  .message-bubble audio { width: 180px; }
  .message-bubble img   { max-width: 200px; }
  .message-bubble.media img { max-width: 200px; }

  /* Toast stretches full-width at bottom */
  .toast-container { left: 12px; right: 12px; bottom: 12px; }
  .toast           { max-width: 100%; }

  /* Modals */
  .modal-overlay { padding: 16px 12px; }
  .profile-modal { max-width: calc(100vw - 32px); }
}

@keyframes panel-in {
  from { opacity: 0; transform: translateX(14px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Small phones ≤ 480px ───────────────────────────────────────────── */
@media (max-width: 480px) {

  .auth-card    { padding: 24px 16px; }
  .auth-heading { font-size: 19px; }

  .join-card { padding: 20px 14px; }

  .room-header-name { font-size: 14px; }
  .room-header-meta { font-size: 11px; }

  .message-bubble       { font-size: 13px; padding: 8px 11px; }
  .message-bubble audio { width: 160px; }
  .message-bubble img   { max-width: 175px; }
  .message-bubble.media img { max-width: 175px; }

  .modal-overlay { padding: 12px 8px; }
  .modal-body    { padding: 16px; }
  .modal-footer  { padding: 12px 16px; }
}