/* Design tokens (matches portfolio home.css) */
:root{
  --ease-in-cubic: cubic-bezier(0.55,0.055,0.675,0.19);
  --gap-sm: clamp(0.5rem, 1.2vw, 1rem);
  --gap-md: clamp(0.75rem, 2vw, 1.5rem);
  --radius-sm: 6px;
  --radius-md: 10px;
  --header-h: 56px;
  --sidebar-w: 240px;
  --list-w: 360px;

  --fg: #111;
  --muted: #6b7280;
  --border: #d1d5db;
  --bg: #ffffff;
  --card-bg: #ffffff;
  --chip-bg: #f9fafb;
  --grid-line: rgba(0,0,0,0.05);
  --header-bg: #000;
  --header-fg: #ffffff;
  --hover-bg: #f3f4f6;
  --selected-bg: #ececec;
  --unread-bg: #fafafa;
  --accent: #111;
  --accent-fg: #fff;
  --danger: #b91c1c;
  --success: #065f46;
  --warn: #b45309;

  --presence-online: #16a34a;
  --presence-busy:   #dc2626;
  --presence-away:   #f59e0b;
  --presence-offline:#9ca3af;
}
[data-theme="dark"]{
  --fg: #f5f5f5;
  --muted: #a3a3a3;
  --border: #404040;
  --bg: #0a0a0a;
  --card-bg: #1a1a1a;
  --chip-bg: #262626;
  --grid-line: rgba(255,255,255,0.05);
  --header-bg: #171717;
  --header-fg: #f5f5f5;
  --hover-bg: #1f1f1f;
  --selected-bg: #2a2a2a;
  --unread-bg: #141414;
  --accent: #f5f5f5;
  --accent-fg: #111;
}

*,*::before,*::after{ box-sizing: border-box; }
*{
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: "Space Grotesk","Inter",system-ui,-apple-system,sans-serif;
}
html,body{ margin:0; padding:0; height:100%; }
body{
  color: var(--fg); background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 8px 8px;
  overflow: hidden;
  transition: background-color 0.2s ease, color 0.2s ease;
}
a{ color: inherit; text-decoration: none; }
button{ font: inherit; cursor: pointer; }
input,textarea,select{ font: inherit; color: var(--fg); background: var(--card-bg); }

.hidden{ display: none !important; }

.btn{
  border: solid 2px var(--fg); border-radius: var(--radius-sm); cursor: pointer;
  background-color: var(--bg); color: var(--fg);
  padding: 0.45rem 0.85rem; font-size: 0.88rem;
  transition: transform 0.15s ease, filter 0.15s ease, background-color 0.15s ease;
}
.btn:hover{ filter: invert(1); transform: scale(1.03); }
.btn.is-active, .btn.primary{ background-color: var(--fg); color: var(--bg); }
.btn.ghost{ border-color: transparent; background: transparent; }
.btn.ghost:hover{ background: var(--hover-bg); filter: none; transform: none; }
.btn.danger{ border-color: var(--danger); color: var(--danger); }
.btn.danger:hover{ background: var(--danger); color: #fff; filter: none; }
.btn:disabled{ opacity: 0.5; cursor: not-allowed; }
.icon-btn{
  background: none; border: none; cursor: pointer; padding: 8px;
  border-radius: var(--radius-sm); color: inherit; font-size: 1rem; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}
.icon{ width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.svg-sprite{ position:absolute; width:0; height:0; overflow:hidden; }
.brand, .compose-btn, .row > span:first-child, .btn { display: inline-flex; align-items: center; gap: .4rem; }
.icon-btn:hover{ background: rgba(127,127,127,0.15); }

header{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  height: var(--header-h);
  background-color: var(--header-bg); color: var(--header-fg);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(0.75rem, 2vw, 1.25rem); gap: var(--gap-sm);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.header-left, .header-right{ display: flex; align-items: center; gap: 0.5rem; }
.brand{ font-weight: 700; font-size: 1rem; letter-spacing: 0.02em; }
.brand small{ color: rgba(255,255,255,0.55); font-weight: 400; margin-left: 0.4rem; font-size: 0.7rem; }

.theme-toggle{
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.2);
  color: var(--header-fg); padding: 0.2rem 0.5rem 0.2rem 0.25rem;
  border-radius: 999px; cursor: pointer; font-size: 0.78rem;
}
.theme-toggle:hover{ background: rgba(255,255,255,0.16); }
.theme-toggle .knob{
  width: 20px; height: 20px; border-radius: 999px;
  background: #fff; color: #111;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  transition: transform 0.3s var(--ease-in-cubic);
}
[data-theme="dark"] .theme-toggle .knob{ background: #111; color: #fff; transform: rotate(180deg); }

.presence-select{
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px; padding: 0.2rem 0.5rem; cursor: pointer; font-size: 0.78rem;
  color: var(--header-fg);
}
.presence-select select{
  background: transparent; border: none; color: var(--header-fg);
  font-size: 0.78rem; outline: none; cursor: pointer;
}
.presence-select select option{ color: #111; background: #fff; }

#user-pill{
  font-size: 0.78rem; color: rgba(255,255,255,0.75); padding-right: 0.25rem;
  max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

#login-screen{
  height: 100dvh; display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.login-card{
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md);
  width: 100%; max-width: 380px;
  padding: 2rem 1.5rem; display: flex; flex-direction: column; gap: 1rem;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}
#login-choice, #login-form-wrap{ display:flex; flex-direction:column; gap:.65rem; }
.mailbox-users{ display:grid; grid-template-columns:repeat(auto-fit,minmax(110px,1fr)); gap:.8rem; }
.mailbox-user{
  border:0; background:transparent; color:var(--fg); padding:.5rem; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; gap:.55rem; min-width:0;
}
.mailbox-avatar{
  width:76px; height:76px; border-radius:50%; display:grid; place-items:center;
  background:var(--fg); color:var(--bg); font-size:1.4rem; font-weight:700;
  border:3px solid var(--card-bg); box-shadow:0 0 0 1px var(--border);
}
.mailbox-user:hover .mailbox-avatar{ transform:scale(1.04); }
.mailbox-user strong,.mailbox-user small{ max-width:100%; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.mailbox-user small{ color:var(--muted); font-size:.7rem; }
.login-card h1{ margin: 0; font-size: 1.4rem; }
.login-card .sub{ color: var(--muted); font-size: 0.85rem; margin: -0.5rem 0 0.5rem; }
.login-card input{
  padding: 0.65rem 0.8rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); font-size: 0.95rem; width: 100%;
}
.login-card label{ display: flex; align-items: center; gap: 0.5rem; font-size: 0.82rem; color: var(--muted); }
.login-card .remember-row{
  width: 100%; margin: 0.65rem 0; padding: 0.55rem 0.65rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--chip-bg); color: var(--fg); line-height: 1.25;
}
.login-card .remember-row input{
  width: 18px; height: 18px; margin: 0; padding: 0; flex: 0 0 18px;
}
.error-banner{
  background: #fef2f2; color: #991b1b; border: 1px solid #fca5a5;
  padding: 0.5rem 0.7rem; border-radius: var(--radius-sm); font-size: 0.82rem;
}
[data-theme="dark"] .error-banner{ background: #2a1414; color: #fecaca; border-color: #5a2a2a; }

#app-screen{
  display: grid;
  grid-template-columns: var(--sidebar-w) var(--list-w) 1fr;
  grid-template-rows: 1fr;
  /* dvh avoids the iOS Safari URL-bar inclusion in 100vh */
  height: 100dvh; padding-top: var(--header-h);
}

.sidebar{
  border-right: 1px solid var(--border); background: var(--bg);
  display: flex; flex-direction: column; overflow: hidden;
}
.sidebar .compose-btn{
  margin: 0.75rem; padding: 0.65rem 0.85rem;
  background: var(--fg); color: var(--bg); border: 2px solid var(--fg);
  border-radius: var(--radius-sm); font-weight: 700; cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}
.sidebar .compose-btn:hover{ filter: invert(1); transform: scale(1.02); }
.sidebar nav, .sidebar .panel{ padding: 0.25rem 0.5rem; display: flex; flex-direction: column; gap: 1px; }
.sidebar .panel{ overflow-y: auto; }
.sidebar h4{
  margin: 0.75rem 0.85rem 0.25rem; font-size: 0.7rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700;
  display: flex; align-items: center; justify-content: space-between;
}
.panel-actions{ display:inline-flex; align-items:center; gap:.3rem; }
.sidebar h4 button{ background: none; border: none; cursor: pointer; color: var(--muted); padding: 2px 6px; border-radius: 4px; }
.sidebar h4 button:hover{ background: var(--hover-bg); color: var(--fg); }
.row{
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  padding: 0.4rem 0.7rem; border-radius: var(--radius-sm); cursor: pointer;
  font-size: 0.88rem; color: var(--fg); transition: background 0.12s ease;
}
.row:hover{ background: var(--hover-bg); }
.row.active{ background: var(--selected-bg); font-weight: 600; }
.row .count{
  background: var(--chip-bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: 999px;
  font-size: 0.65rem; padding: 0 0.45rem; min-width: 18px; text-align: center;
}
.row .icon{ width: 18px; text-align: center; font-size: 0.95rem; }

.contact-row{ display: flex; align-items: center; gap: 0.55rem; padding: 0.4rem 0.7rem; border-radius: var(--radius-sm); cursor: pointer; font-size: 0.84rem; }
.contact-row:hover{ background: var(--hover-bg); }
.contact-name{ overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.contact-sub{ font-size: 0.7rem; color: var(--muted); }
.presence-dot{ width: 9px; height: 9px; border-radius: 999px; flex-shrink: 0; background: var(--presence-offline); }
.presence-dot.online{ background: var(--presence-online); box-shadow: 0 0 0 2px rgba(22,163,74,0.18); }
.presence-dot.busy{ background: var(--presence-busy); }
.presence-dot.away{ background: var(--presence-away); }
.presence-dot.offline,.presence-dot.invisible{ background: var(--presence-offline); }

.list-panel{
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
  background: var(--bg); overflow: hidden;
}
.list-toolbar{
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border);
  min-height: 48px;
}
.list-toolbar .search{
  flex: 1; display: flex; align-items: center;
  background: var(--chip-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 0 0.5rem;
}
.list-toolbar .search input{
  border: none; background: transparent; padding: 0.45rem; flex: 1; font-size: 0.85rem; outline: none;
}
.list-title{
  font-weight: 700; font-size: 0.9rem;
  padding: 0 0.25rem; display: flex; align-items: center; gap: 0.4rem;
}
#message-list{ flex: 1; overflow-y: auto; }
.msg-row{
  display: grid; grid-template-columns: 18px 18px 1fr auto;
  gap: 0.5rem; padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border); cursor: pointer; align-items: start;
  transition: background 0.1s ease;
  -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; touch-action: pan-y;
}
/* Checkbox: hidden until row hovered or any row is multi-selected */
.msg-cb{
  appearance: none; -webkit-appearance: none;
  width: 16px; height: 16px; min-width: 16px; margin-top: 1px;
  border: 1.5px solid var(--border); border-radius: 3px; cursor: pointer;
  background: var(--bg); transition: background 0.12s, border-color 0.12s;
  opacity: 0; /* hidden by default */
}
.msg-row:hover .msg-cb,
.msg-row.multi-selected .msg-cb,
#message-list.any-selected .msg-cb{ opacity: 1; }
.msg-cb:checked{
  background: var(--fg); border-color: var(--fg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 10'%3E%3Cpath d='M1 5l3.5 4L11 1' stroke='%23fff' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center; background-size: 10px;
  opacity: 1;
}
[data-theme="dark"] .msg-cb:checked{
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 10'%3E%3Cpath d='M1 5l3.5 4L11 1' stroke='%23111' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}
.msg-row.multi-selected{ background: var(--selected-bg); }
.msg-row:hover{ background: var(--hover-bg); }
.msg-row.selected{ background: var(--selected-bg); border-left: 3px solid var(--fg); padding-left: calc(0.85rem - 3px); }
.msg-row.unread{ background: var(--unread-bg); }
.msg-row .star{ font-size: 0.95rem; color: var(--muted); cursor: pointer; }
.msg-row .star.on{ color: var(--warn); }
.star .icon, .friend-icon .icon{ width:16px; height:16px; }
#flag-btn.is-active{ color:var(--warn); }
.msg-row .body{ overflow: hidden; }
.msg-row .from{ font-size: 0.82rem; font-weight: 700; color: var(--fg); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg-row.unread .from::before{ content: "● "; color: var(--fg); font-size: 0.65rem; vertical-align: middle; }
.msg-row .subject{ font-size: 0.82rem; color: var(--fg); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg-row .meta{ display: flex; flex-direction: column; align-items: flex-end; gap: 0.2rem; font-size: 0.7rem; color: var(--muted); }
.msg-row .meta .attach{ font-size: 0.85rem; }
.pagination{
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.5rem; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--muted);
}

.view-panel{ display: flex; flex-direction: column; overflow: hidden; background: var(--bg); }
.view-toolbar{
  display: flex; align-items: center; gap: 0.35rem;
  padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border);
  min-height: 48px; flex-wrap: wrap;
}
.view-toolbar .spacer{ flex: 1; }
#message-view{ flex: 1; overflow-y: auto; padding: clamp(1rem, 2vw, 1.75rem); }
.empty-state{ text-align: center; color: var(--muted); padding: 6rem 1rem; font-size: 0.95rem; }
.msg-detail{
  max-width: 760px; margin: 0 auto;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: clamp(1rem, 2vw, 1.5rem);
}
.msg-detail h2{ margin: 0 0 0.5rem; font-size: 1.25rem; line-height: 1.3; }
.msg-detail .meta{ color: var(--muted); font-size: 0.82rem; display: flex; flex-direction: column; gap: 0.15rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; }
.msg-detail .meta b{ color: var(--fg); font-weight: 600; }
.msg-body{ font-size: 0.95rem; line-height: 1.6; word-break: break-word; }
.msg-body.plain{ white-space: pre-wrap; font-family: "Space Grotesk", system-ui, sans-serif; }
.msg-body iframe{ width: 100%; border: 0; min-height: 400px; background: var(--card-bg); }
.attachments{
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}
.attach-chip{
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.6rem; border: 1px solid var(--border); border-radius: 999px;
  font-size: 0.8rem; background: var(--chip-bg); color: var(--fg); cursor: pointer;
}
.attach-chip:hover{ background: var(--hover-bg); }

.modal-overlay{ position: fixed; inset:0; background: rgba(0,0,0,0.5); z-index:200; display:none; align-items:center; justify-content:center; padding:1rem; }
.modal-overlay.show{ display: flex; }
.modal{
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md);
  width: 100%; max-width: 640px; max-height: 92vh; overflow: auto;
  display: flex; flex-direction: column;
}
.modal-header{ display: flex; align-items: center; justify-content: space-between; padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); }
.modal-header h3{ margin: 0; font-size: 1rem; }
.modal-body{ padding: 1rem; display: flex; flex-direction: column; gap: 0.75rem; overflow-y: auto; }
.modal-actions{
  display: flex; gap: 0.5rem; justify-content: flex-end; flex-wrap: wrap;
  padding: 0.75rem 1rem;
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
}
/* On full-screen modal (narrow), bottom actions already have body inset */
@media (max-width: 480px){
  .modal-actions{ padding-bottom: 0.75rem; }
}
.field{ display: flex; flex-direction: column; gap: 0.25rem; }
.field label{ font-size: 0.75rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.field input, .field textarea, .field select{
  padding: 0.5rem 0.65rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); font-size: 0.9rem; outline: none; width: 100%;
}
.field input:focus, .field textarea:focus, .field select:focus{ border-color: var(--fg); }
.field textarea{ resize: vertical; min-height: 80px; font-family: inherit; }

#compose-modal .modal{ max-width: 720px; }
.compose-recipients-row{ display: grid; grid-template-columns: 60px 1fr auto; gap: 0.5rem; align-items: center; }
.compose-recipients-row label{ font-size: 0.78rem; color: var(--muted); font-weight: 600; }
.compose-recipients-row input{
  padding: 0.45rem 0.55rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); font-size: 0.9rem;
}
.compose-recipients-row .toggle{ font-size: 0.75rem; color: var(--muted); cursor: pointer; background: none; border: none; padding: 0.2rem 0.5rem; }
.compose-recipients-row .toggle:hover{ color: var(--fg); }
.list-picker{ display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; }
.list-picker select{
  padding: 0.4rem 0.5rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); font-size: 0.85rem;
}
.attachments-row{ display: flex; flex-wrap: wrap; gap: 0.4rem; }
.attachments-row .file-chip{
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.25rem 0.5rem; background: var(--chip-bg); border: 1px solid var(--border);
  border-radius: 999px; font-size: 0.75rem;
}
.attachments-row .file-chip button{ background: none; border: none; cursor: pointer; padding: 0; color: var(--muted); }
#compose-body{ min-height: 220px; resize: vertical; }
.compose-footer{ display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: var(--muted); width: 100%; flex-wrap: wrap; }
.compose-footer .left{ flex: 1; display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }

/* ─── Multi-select action bar ─── */
#selection-bar{
  display: none; /* shown via .show class */
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 92;
  background: var(--card-bg); border-top: 2px solid var(--fg);
  padding: 0.55rem 0.75rem;
  padding-bottom: calc(0.55rem + env(safe-area-inset-bottom));
  flex-wrap: wrap; align-items: center; gap: 0.4rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.12);
}
#selection-bar.show{ display: flex; }
#sel-count{
  font-size: 0.82rem; font-weight: 700; color: var(--fg);
  margin-right: 0.25rem;
}
#selection-bar .btn{ padding: 0.35rem 0.7rem; font-size: 0.8rem; }
#selection-bar .icon-btn{ padding: 6px; font-size: 0.9rem; }
/* Shift bar up when mobile-nav is also present */
@media (max-width: 820px){
  #selection-bar{ bottom: 56px; }
}

.toast-stack{ position: fixed; bottom: 1rem; right: 1rem; display: flex; flex-direction: column; gap: 0.5rem; z-index: 300; }
.toast{
  background: var(--fg); color: var(--bg); padding: 0.65rem 1rem;
  border-radius: var(--radius-sm); font-size: 0.85rem; max-width: 320px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3); cursor: pointer;
  animation: slideIn 0.25s var(--ease-in-cubic);
}
.toast.error{ background: var(--danger); color: #fff; }
.toast.success{ background: var(--success); color: #fff; }
@keyframes slideIn{ from{ transform: translateY(20px); opacity: 0; } to{ transform: translateY(0); opacity: 1; } }

#mobile-nav{
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
  background: var(--card-bg); border-top: 1px solid var(--border);
  padding: 0.4rem 0.5rem; justify-content: space-around; align-items: center;
  padding-bottom: calc(0.55rem + env(safe-area-inset-bottom));
}
#mobile-nav button{
  background: none; border: none; color: var(--muted); padding: 0.4rem 0.5rem;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  font-size: 0.65rem; cursor: pointer;
}
#mobile-nav button.active{ color: var(--fg); font-weight: 700; }
#mobile-nav button .ico{ font-size: 1.15rem; }
#hamburger{ display: none; position: fixed; right: max(16px, env(safe-area-inset-right)); bottom: calc(66px + env(safe-area-inset-bottom)); z-index: 190; width: 50px; height: 50px; border-radius: 50%; border: 0; background: var(--fg); color: var(--bg); align-items:center; justify-content:center; box-shadow: 0 8px 24px rgba(0,0,0,.3); }
#sidebar-scrim{ display:none; position:fixed; inset:var(--header-h) 0 0; z-index:149; background:rgba(0,0,0,.45); }
#sidebar-scrim.show{ display:block; }
.msg-row.dragging{ opacity:.35; }
.msg-row.touch-dragging{ opacity:.82; z-index:210; position:relative; touch-action:none; transition:none; pointer-events:none; }
#message-drop-actions{ position:fixed; left:50%; bottom:calc(-76px - env(safe-area-inset-bottom)); z-index:220; display:flex; gap:10px; transform:translateX(-50%); transition:transform .18s ease; }
#message-drop-actions.show{ transform:translate(-50%, calc(-150px - env(safe-area-inset-bottom))); }
#message-drop-actions>div{ width:100px; height:62px; border:1px solid var(--border); border-radius:10px; background:var(--card-bg); display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px; }
#message-drop-actions [data-message-action="delete"]{ color:var(--danger); }
#message-drop-actions .over{ transform:scale(1.08); border-color:currentColor; }

.spinner{
  width: 18px; height: 18px; border: 2px solid var(--border); border-top-color: var(--fg);
  border-radius: 50%; display: inline-block; animation: spin .6s linear infinite;
}
@keyframes spin{ to{ transform: rotate(360deg); } }

@media (max-width: 1100px){
  :root{ --sidebar-w: 200px; --list-w: 300px; }
}
@media (max-width: 820px){
  #app-screen{ grid-template-columns: 1fr; padding-bottom: 56px; }
  .sidebar{ position: fixed; top: var(--header-h); left: 0; bottom: 56px; width: 80%; max-width: 320px;
    transform: translateX(-100%); transition: transform 0.25s ease; z-index: 170; background: var(--bg); }
  .sidebar.open{ transform: translateX(0); }
  .list-panel{ display: flex; }
  .view-panel{ display: none; position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 56px; z-index: 60; background: var(--bg); }
  .view-panel.active{ display: flex; }
  #mobile-nav{ display: flex; z-index: 180; }
  #hamburger{ display: inline-flex; }
  .brand small{ display: none; }
  #user-pill{ display: none; }
  #message-drop-actions.show{ transform:translate(-50%, calc(-145px - env(safe-area-inset-bottom))); }
}
@media (max-width: 480px){
  .modal{ max-height: 100vh; height: 100vh; max-width: 100vw; border-radius: 0; border: none; }
  .modal-overlay{ padding: 0; align-items: stretch; }
  .compose-recipients-row{ grid-template-columns: 50px 1fr auto; }
  .view-toolbar{ overflow-x: auto; flex-wrap: nowrap; }
  .msg-row{ padding: 0.6rem 0.7rem; }
}

@media print{
  header, .sidebar, .list-panel, .view-toolbar, #mobile-nav{ display: none !important; }
  #app-screen{ grid-template-columns: 1fr; padding: 0; }
  .view-panel{ display: flex !important; }
}