:root,
:root[data-theme="dark"] {
  color-scheme: dark;
  --app-bg: #070a10;
  --sidebar-bg: #0b0f17;
  --surface-1: #101620;
  --surface-2: #161d29;
  --surface-3: #1d2736;
  --surface-raised: #202b3c;
  --surface-hover: #1a2331;
  --surface-active: #222e40;
  --reader-bg: #0b1018;
  --header-bg: rgba(11, 16, 24, .94);
  --input-bg: #0a0f17;
  --overlay: rgba(0, 0, 0, .70);
  --border: #263143;
  --border-strong: #37465e;
  --text: #f0f4fb;
  --text-soft: #d5dce8;
  --muted: #929fb3;
  --muted-strong: #aeb9c9;
  --accent: #7482ff;
  --accent-hover: #8b97ff;
  --accent-soft: rgba(116, 130, 255, .13);
  --accent-border: rgba(116, 130, 255, .44);
  --danger: #ff7186;
  --danger-soft: rgba(255, 113, 134, .12);
  --danger-border: rgba(255, 113, 134, .34);
  --success: #61d9a8;
  --warning: #f3c66b;
  --focus-ring: rgba(116, 130, 255, .20);
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, .22);
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, .45);
  --preview-bg: #080d14;
  --preview-frame: #101722;
  --preview-border: #2b374b;
  --scroll-track: transparent;
  --scroll-thumb: #344157;
  --scroll-thumb-hover: #465773;
  --brand-glow: rgba(116, 130, 255, .34);
  --mail-canvas-bg: #ffffff;
  --mail-canvas-text: #111827;
  --mail-link: #0969da;
  --mail-canvas-border: #2b374b;
  --mail-canvas-shadow: 0 20px 64px rgba(0,0,0,.44);
}

:root[data-theme="light"] {
  color-scheme: light;
  --app-bg: #e9eef5;
  --sidebar-bg: #f7f9fc;
  --surface-1: #ffffff;
  --surface-2: #f4f7fb;
  --surface-3: #e9eef6;
  --surface-raised: #ffffff;
  --surface-hover: #edf2f8;
  --surface-active: #e5ebf5;
  --reader-bg: #eef2f7;
  --header-bg: rgba(255, 255, 255, .94);
  --input-bg: #ffffff;
  --overlay: rgba(15, 23, 42, .48);
  --border: #d7dee9;
  --border-strong: #c0cad8;
  --text: #172033;
  --text-soft: #2e3a4e;
  --muted: #667389;
  --muted-strong: #4b5a70;
  --accent: #5264ee;
  --accent-hover: #4052da;
  --accent-soft: rgba(82, 100, 238, .10);
  --accent-border: rgba(82, 100, 238, .34);
  --danger: #d9445c;
  --danger-soft: rgba(217, 68, 92, .09);
  --danger-border: rgba(217, 68, 92, .26);
  --success: #198d66;
  --warning: #9d6a08;
  --focus-ring: rgba(82, 100, 238, .16);
  --shadow-sm: 0 8px 24px rgba(37, 50, 72, .10);
  --shadow-lg: 0 24px 70px rgba(37, 50, 72, .18);
  --preview-bg: #dfe5ee;
  --preview-frame: #edf1f6;
  --preview-border: #cbd4e1;
  --scroll-track: transparent;
  --scroll-thumb: #b9c3d1;
  --scroll-thumb-hover: #9daabc;
  --brand-glow: rgba(82, 100, 238, .22);
  --mail-canvas-bg: #ffffff;
  --mail-canvas-text: #111827;
  --mail-link: #0969da;
  --mail-canvas-border: #cbd4e1;
  --mail-canvas-shadow: 0 18px 55px rgba(35,48,70,.16);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --app-bg: #e9eef5;
    --sidebar-bg: #f7f9fc;
    --surface-1: #ffffff;
    --surface-2: #f4f7fb;
    --surface-3: #e9eef6;
    --surface-raised: #ffffff;
    --surface-hover: #edf2f8;
    --surface-active: #e5ebf5;
    --reader-bg: #eef2f7;
    --header-bg: rgba(255, 255, 255, .94);
    --input-bg: #ffffff;
    --overlay: rgba(15, 23, 42, .48);
    --border: #d7dee9;
    --border-strong: #c0cad8;
    --text: #172033;
    --text-soft: #2e3a4e;
    --muted: #667389;
    --muted-strong: #4b5a70;
    --accent: #5264ee;
    --accent-hover: #4052da;
    --accent-soft: rgba(82, 100, 238, .10);
    --accent-border: rgba(82, 100, 238, .34);
    --danger: #d9445c;
    --danger-soft: rgba(217, 68, 92, .09);
    --danger-border: rgba(217, 68, 92, .26);
    --success: #198d66;
    --warning: #9d6a08;
    --focus-ring: rgba(82, 100, 238, .16);
    --shadow-sm: 0 8px 24px rgba(37, 50, 72, .10);
    --shadow-lg: 0 24px 70px rgba(37, 50, 72, .18);
    --preview-bg: #dfe5ee;
    --preview-frame: #edf1f6;
    --preview-border: #cbd4e1;
    --scroll-track: transparent;
    --scroll-thumb: #b9c3d1;
    --scroll-thumb-hover: #9daabc;
    --brand-glow: rgba(82, 100, 238, .22);
    --mail-canvas-bg: #ffffff;
    --mail-canvas-text: #111827;
    --mail-link: #0969da;
    --mail-canvas-border: #cbd4e1;
    --mail-canvas-shadow: 0 18px 55px rgba(35,48,70,.16);
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--app-bg); }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--app-bg);
  color: var(--text);
  transition: background-color .18s ease, color .18s ease;
}
button, input, select, textarea { font: inherit; }
button { color: inherit; }
button:disabled { opacity: .45; cursor: not-allowed; transform: none !important; }
input, select, textarea { color-scheme: inherit; }
[hidden] { display: none !important; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
* { scrollbar-width: thin; scrollbar-color: var(--scroll-thumb) var(--scroll-track); }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: var(--scroll-track); }
*::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border: 3px solid transparent; border-radius: 999px; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background-color: var(--scroll-thumb-hover); }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 290px 1fr; gap: 14px; padding: 14px; background: radial-gradient(circle at top left, var(--accent-soft), transparent 22%), radial-gradient(circle at right top, color-mix(in srgb, var(--accent) 12%, transparent), transparent 26%), var(--app-bg); }
.sidebar {
  min-width: 0; display: flex; flex-direction: column; gap: 16px; padding: 18px 15px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--sidebar-bg) 92%, #ffffff 8%), var(--sidebar-bg));
  border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow-sm);
}
.brand { display: flex; align-items: center; gap: 10px; padding: 1px 4px 7px; font-size: 17px; color: var(--text); }
.brand-mark {
  width: 54px; height: 54px; border-radius: 17px; display: grid; place-items: center;
  font-weight: 900; font-size: 25px; color: #fff;
  background: linear-gradient(145deg, var(--accent), #9367ec); box-shadow: 0 12px 36px var(--brand-glow);
}
.brand-mark.small { width: 35px; height: 35px; border-radius: 11px; font-size: 16px; }

.primary, .secondary, .icon-button, .danger-button, .text-button, .filter-button, .theme-toggle {
  border: 0; cursor: pointer; transition: background-color .16s ease, border-color .16s ease, color .16s ease, transform .16s ease, box-shadow .16s ease;
}
.primary { border-radius: 12px; background: var(--accent); color: #fff; font-weight: 800; padding: 12px 16px; box-shadow: 0 8px 22px var(--accent-soft); }
.primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.full { width: 100%; }
.secondary { border-radius: 11px; background: var(--surface-3); color: var(--text); padding: 11px 15px; border: 1px solid var(--border); }
.icon-button { border-radius: 10px; padding: 9px 11px; background: var(--surface-2); border: 1px solid var(--border); white-space: nowrap; }
.icon-button:hover, .secondary:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.danger-button { border-radius: 10px; padding: 9px 12px; color: var(--danger); background: var(--danger-soft); border: 1px solid var(--danger-border); }
.danger-button:hover { background: color-mix(in srgb, var(--danger-soft) 75%, var(--danger) 25%); }
.text-button { background: transparent; color: var(--muted); padding: 5px 0; text-align: left; }
.text-button:hover { color: var(--text); }
.theme-toggle {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 12px; border-radius: 11px; background: var(--surface-2); color: var(--text-soft); border: 1px solid var(--border);
}
.theme-toggle:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.theme-icon { width: 24px; height: 24px; display: inline-grid; place-items: center; border-radius: 8px; background: var(--surface-3); color: var(--accent); font-weight: 900; }
.theme-label { flex: 1; text-align: left; font-size: 12px; font-weight: 800; }
.theme-shortcut { color: var(--muted); font-size: 10px; }
.login-theme-toggle { position: fixed; top: 18px; right: 18px; width: auto; min-width: 126px; z-index: 5; box-shadow: var(--shadow-sm); }

.section-title, .eyebrow { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; font-weight: 900; }
.address-list { display: flex; flex-direction: column; gap: 5px; overflow: auto; }
.address-item {
  width: 100%; border: 0; background: transparent; padding: 10px; display: grid;
  grid-template-columns: 36px 1fr auto; align-items: center; gap: 9px; border-radius: 12px;
  cursor: pointer; text-align: left; color: inherit;
}
.address-item:hover { background: var(--surface-hover); }
.address-item.active { background: var(--surface-active); box-shadow: inset 3px 0 var(--accent); }
.address-icon, .sender-avatar { display: grid; place-items: center; border-radius: 11px; background: var(--surface-3); color: var(--accent); font-weight: 900; }
.address-icon { width: 36px; height: 36px; }
.address-text { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.address-text strong, .address-text small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.address-text small { color: var(--muted); font-size: 11px; }
.unread-dot, .badge {
  min-width: 21px; height: 21px; padding: 0 6px; border-radius: 999px; display: inline-grid; place-items: center;
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 900;
}
.sidebar-footer { margin-top: auto; border-top: 1px solid var(--border); padding: 13px 5px 0; display: flex; flex-direction: column; gap: 10px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.side-empty { color: var(--muted); font-size: 13px; padding: 10px; }

.mail-layout { min-width: 0; display: grid; grid-template-columns: minmax(395px, 38%) 1fr; gap: 14px; height: calc(100vh - 28px); background: transparent; }
.inbox-panel, .reader-panel { min-width: 0; background: linear-gradient(180deg, color-mix(in srgb, var(--surface-1) 96%, #ffffff 4%), var(--surface-1)); overflow: hidden; border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow-sm); }
.inbox-panel { display: flex; flex-direction: column; }
.panel-header {
  min-height: 110px; padding: 22px 23px; display: flex; align-items: center; justify-content: space-between; gap: 15px;
  border-bottom: 1px solid var(--border); background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 55%, transparent), transparent 95%);
}
.panel-header h1 { margin: 5px 0 0; font-size: clamp(18px, 2vw, 24px); overflow-wrap: anywhere; color: var(--text); }
.header-actions { display: flex; gap: 7px; flex-wrap: wrap; justify-content: flex-end; }
.inbox-controls { padding: 12px 16px; display: grid; gap: 10px; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 88%, transparent), transparent); }
.search-box { position: relative; }
.search-box input { padding-left: 38px; }
.search-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.filter-row { display: flex; align-items: center; gap: 7px; }
.filter-button { padding: 7px 11px; border-radius: 999px; background: transparent; color: var(--muted); }
.filter-button:hover { color: var(--text); background: var(--surface-hover); }
.filter-button.active { background: var(--surface-active); color: var(--text); box-shadow: inset 0 0 0 1px var(--border); }
.filter-spacer { flex: 1; }
.message-list { flex: 1; overflow: auto; padding: 12px; background: linear-gradient(180deg, color-mix(in srgb, var(--surface-1) 80%, transparent), transparent); }
.message-item {
  width: 100%; padding: 16px 17px; margin-bottom: 10px; border: 1px solid var(--border); border-radius: 18px; background: color-mix(in srgb, var(--surface-1) 92%, transparent);
  text-align: left; display: grid; grid-template-columns: 44px 1fr; gap: 11px; cursor: pointer; color: inherit; box-shadow: 0 6px 20px rgba(0,0,0,.05);
}
.message-item:hover { background: var(--surface-hover); border-color: var(--border-strong); transform: translateY(-1px); }
.message-item.active { background: color-mix(in srgb, var(--surface-active) 88%, transparent); border-color: var(--accent-border); box-shadow: inset 3px 0 var(--accent), 0 10px 30px rgba(0,0,0,.10); }
.message-item.unread { background: color-mix(in srgb, var(--accent-soft) 75%, var(--surface-1) 25%); }
.message-item.unread:hover { background: color-mix(in srgb, var(--accent-soft) 72%, var(--surface-hover) 28%); }
.message-item.unread .subject-line, .message-item.unread .message-top strong { font-weight: 900; color: var(--text); }
.sender-avatar { width: 44px; height: 44px; border-radius: 14px; }
.message-main { min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.message-top { display: flex; justify-content: space-between; gap: 10px; }
.message-top strong, .subject-line, .message-preview { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.message-top time { color: var(--muted); font-size: 11px; flex: 0 0 auto; }
.subject-line { font-size: 13px; color: var(--text-soft); }
.message-preview { color: var(--muted); font-size: 11px; }

.reader-panel { overflow: auto; background: radial-gradient(circle at top, color-mix(in srgb, var(--accent) 9%, transparent), transparent 35%), var(--reader-bg); }
.reader-empty { min-height: 100%; }
.empty-state { min-height: 240px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; color: var(--muted); text-align: center; padding: 28px; }
.empty-state strong { color: var(--text-soft); font-size: 15px; }
#reader { min-height: 100%; background: var(--reader-bg); }
.reader-header {
  padding: 28px 30px 20px; display: flex; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 3; background: color-mix(in srgb, var(--header-bg) 92%, transparent); backdrop-filter: blur(18px); box-shadow: 0 14px 34px rgba(0,0,0,.08);
}
.reader-title-block { min-width: 0; }
.reader-header h2 { margin: 0 0 12px; font-size: clamp(24px, 2.8vw, 34px); line-height: 1.14; letter-spacing: -.02em; overflow-wrap: anywhere; color: var(--text); }
.reader-meta { display: flex; flex-wrap: wrap; gap: 8px 10px; color: var(--muted); font-size: 12px; }
.reader-meta strong, .reader-meta span { padding: 7px 11px; border-radius: 999px; background: color-mix(in srgb, var(--surface-2) 78%, transparent); border: 1px solid var(--border); }
.reader-meta strong { color: var(--text-soft); }
.reader-actions { display: flex; gap: 7px; flex-wrap: wrap; align-content: flex-start; justify-content: flex-end; }
.mobile-back { display: none; }
.image-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; padding: 16px 28px; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 62%, transparent), transparent); }
.gallery-item { display: block; text-decoration: none; color: var(--text); background: var(--surface-2); border: 1px solid var(--border); border-radius: 15px; overflow: hidden; transition: .16s ease; box-shadow: var(--shadow-sm); }
.gallery-item:hover { transform: translateY(-2px); border-color: var(--border-strong); box-shadow: var(--shadow-lg); }
.gallery-thumb { display: grid; place-items: center; background: var(--preview-bg); aspect-ratio: 4 / 3; overflow: hidden; }
.gallery-thumb img { display: block; width: 100%; height: 100%; object-fit: contain; }
.gallery-caption { padding: 10px 12px; display: flex; flex-direction: column; gap: 2px; }
.gallery-caption strong, .gallery-caption small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gallery-caption small { color: var(--muted); font-size: 11px; }
.attachments { display: flex; flex-wrap: wrap; gap: 9px; padding: 15px 28px; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 56%, transparent), transparent); }
.attachment { color: var(--text); text-decoration: none; display: flex; gap: 9px; align-items: center; padding: 10px 12px; border-radius: 11px; background: var(--surface-2); border: 1px solid var(--border); }
.attachment:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.attachment span:last-child { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.attachment strong, .attachment small { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachment small { color: var(--muted); font-size: 10px; }
.body-tabs { display: flex; gap: 8px; padding: 20px 28px 0; }
.tab { border: 1px solid var(--border); background: color-mix(in srgb, var(--surface-2) 82%, transparent); color: var(--muted-strong); padding: 9px 14px; border-radius: 11px; cursor: pointer; font-weight: 700; transition: .16s ease; }
.tab:hover { color: var(--text); background: var(--surface-hover); border-color: var(--border-strong); }
.tab.active { color: #fff; background: linear-gradient(135deg, var(--accent), #8e68ec); border-color: transparent; box-shadow: 0 12px 30px var(--accent-soft); }
.preview-intro { margin: 16px 28px 0; padding: 14px 16px; border-radius: 18px; border: 1px solid var(--border); background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 82%, transparent), color-mix(in srgb, var(--surface-1) 90%, transparent)); display: flex; align-items: flex-start; gap: 14px; box-shadow: var(--shadow-sm); }
.preview-badge { flex: 0 0 auto; padding: 8px 11px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-hover); border: 1px solid var(--accent-border); font-size: 11px; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.preview-copy { display: grid; gap: 4px; }
.preview-copy strong { font-size: 14px; color: var(--text); }
.preview-copy span { font-size: 12px; color: var(--muted); line-height: 1.55; }
.text-body { margin: 18px 28px 45px; padding: 26px 28px; border: 1px solid var(--border); border-radius: 20px; background: linear-gradient(180deg, color-mix(in srgb, var(--surface-1) 96%, transparent), color-mix(in srgb, var(--surface-2) 70%, transparent)); font: 15px/1.72 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text-soft); box-shadow: var(--shadow-sm); }
.preview-shell { margin: 18px 28px 42px; padding: 16px; border: 1px solid var(--preview-border); border-radius: 24px; background: radial-gradient(circle at top, color-mix(in srgb, var(--accent) 10%, transparent), transparent 34%), linear-gradient(180deg, color-mix(in srgb, var(--preview-frame) 96%, transparent), var(--preview-frame)); box-shadow: 0 28px 80px rgba(0,0,0,.28); }
.preview-shell-bar { display:flex; align-items:center; gap:12px; padding: 4px 8px 14px; color: var(--muted); }
.preview-window-dots { display:inline-flex; gap:6px; }
.preview-window-dots i { width:10px; height:10px; border-radius:50%; background: color-mix(in srgb, var(--surface-3) 82%, white 18%); border: 1px solid var(--border); }
.preview-window-dots i:nth-child(1){ background:#ff6b7a; border-color: rgba(255,107,122,.42); }
.preview-window-dots i:nth-child(2){ background:#f6c45f; border-color: rgba(246,196,95,.42); }
.preview-window-dots i:nth-child(3){ background:#61d9a8; border-color: rgba(97,217,168,.42); }
.preview-shell-title { font-size: 12px; font-weight: 800; color: var(--text-soft); }
.preview-shell-chip { margin-left: auto; padding: 7px 10px; border-radius: 999px; background: color-mix(in srgb, var(--surface-2) 84%, transparent); border: 1px solid var(--border); font-size: 11px; }
.html-body { display: block; width: 100%; min-height: 760px; border: 0; border-radius: 18px; background: var(--preview-bg); color-scheme: light; }

.login-body { min-height: 100vh; display: grid; place-items: center; padding: 22px; background: radial-gradient(circle at 20% 10%, var(--accent-soft), transparent 34%), var(--app-bg); }
.login-card { width: min(430px, 100%); padding: 38px; border-radius: 28px; background: linear-gradient(180deg, color-mix(in srgb, var(--surface-1) 96%, transparent), color-mix(in srgb, var(--surface-2) 78%, transparent)); border: 1px solid var(--border); box-shadow: var(--shadow-lg); }
.login-card .brand-mark { margin-bottom: 24px; }
.login-card h1 { margin: 0; font-size: 30px; color: var(--text); }
.muted { color: var(--muted); margin: 7px 0 25px; }
.stack { display: flex; flex-direction: column; gap: 15px; }
label { display: flex; flex-direction: column; gap: 7px; color: var(--muted-strong); font-size: 12px; font-weight: 800; }
input, select, textarea {
  width: 100%; border: 1px solid var(--border); border-radius: 11px; background: var(--input-bg); color: var(--text);
  padding: 12px 13px; outline: none; transition: border-color .16s ease, box-shadow .16s ease, background-color .16s ease;
}
input::placeholder, textarea::placeholder { color: var(--muted); opacity: .85; }
input:hover, select:hover, textarea:hover { border-color: var(--border-strong); }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus-ring); }
select option { background: var(--surface-1); color: var(--text); }
.error { color: var(--danger); background: var(--danger-soft); border: 1px solid var(--danger-border); border-radius: 9px; padding: 9px 11px; margin: 0; font-size: 12px; }
.notice { color: var(--text-soft); background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.success { color: var(--success); }
.warning { color: var(--warning); }
dialog { width: min(470px, calc(100% - 28px)); border: 1px solid var(--border); padding: 0; border-radius: 18px; background: var(--surface-1); color: var(--text); box-shadow: var(--shadow-lg); }
dialog::backdrop { background: var(--overlay); backdrop-filter: blur(6px); }
.dialog-card { padding: 22px; display: flex; flex-direction: column; gap: 17px; }
.dialog-head { display: flex; align-items: center; justify-content: space-between; }
.dialog-head h2 { margin: 0; color: var(--text); }
.dialog-head button { border: 0; background: transparent; color: var(--muted); font-size: 25px; cursor: pointer; }
.dialog-head button:hover { color: var(--text); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; }
.email-input { display: flex; align-items: center; border: 1px solid var(--border); border-radius: 11px; background: var(--input-bg); overflow: hidden; }
.email-input:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus-ring); }
.email-input input { border: 0; box-shadow: none; min-width: 0; background: transparent; }
.email-input span { color: var(--muted); padding-right: 12px; white-space: nowrap; }
.toggle-row { flex-direction: row; align-items: center; gap: 10px; }
.toggle-row input { width: 18px; height: 18px; accent-color: var(--accent); }
.danger-zone { padding: 13px; border: 1px solid var(--danger-border); border-radius: 12px; background: var(--danger-soft); }
.toast { position: fixed; z-index: 100; left: 50%; bottom: 25px; transform: translateX(-50%); background: var(--surface-raised); color: var(--text); border: 1px solid var(--border-strong); padding: 11px 15px; border-radius: 999px; box-shadow: var(--shadow-lg); font-size: 12px; }

@media (max-width: 1080px) {
  .app-shell { grid-template-columns: 220px 1fr; }
  .mail-layout { grid-template-columns: 1fr; height: calc(100vh - 28px); }
  .reader-panel { position: fixed; inset: 14px 14px 14px 234px; z-index: 8; transform: translateX(106%); transition: .22s ease; }
  .reader-panel.open { transform: translateX(0); }
  .mobile-back { display: inline-flex; }
}
@media (max-width: 720px) {
  .app-shell { display: block; padding: 10px; }
  .sidebar { min-height: auto; margin-bottom: 10px; }
  .address-list { max-height: 170px; }
  .mail-layout { height: auto; min-height: calc(100vh - 250px); gap: 10px; }
  .inbox-panel { min-height: 72vh; }
  .reader-panel { inset: 10px; }
  .panel-header { align-items: flex-start; flex-direction: column; }
  .reader-header { padding: 17px 16px; flex-direction: column; }
  .reader-actions { justify-content: flex-start; }
  .image-gallery, .attachments, .body-tabs { padding-left: 16px; padding-right: 16px; }
  .preview-intro { margin-left: 16px; margin-right: 16px; flex-direction: column; }
  .text-body { margin: 16px; padding: 18px; }
  .preview-shell { margin: 16px; padding: 10px; border-radius: 18px; }
  .preview-shell-bar { padding: 2px 4px 10px; }
  .html-body { min-height: 560px; }
  .login-theme-toggle { top: 12px; right: 12px; min-width: 112px; }
}


/* Authenticator module */
.product-nav { display: grid; gap: 7px; padding: 2px 0 4px; }
.product-nav-button {
  width: 100%; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 10px;
  padding: 10px 11px; border: 1px solid transparent; border-radius: 13px; background: transparent;
  color: var(--muted-strong); cursor: pointer; text-align: left; transition: .17s ease;
}
.product-nav-button:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border); }
.product-nav-button.active { background: var(--surface-active); color: var(--text); border-color: var(--accent-border); box-shadow: inset 3px 0 var(--accent); }
.product-nav-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 11px; background: var(--surface-3); color: var(--accent); font-weight: 900; }
.product-nav-copy { min-width: 0; display: grid; gap: 2px; }
.product-nav-copy strong { font-size: 13px; }
.product-nav-copy small { color: var(--muted); font-size: 10px; }
.product-nav-arrow { color: var(--muted); font-size: 16px; }

.auth-view {
  min-width: 0; height: calc(100vh - 28px); overflow: auto; padding: 30px;
  border: 1px solid var(--border); border-radius: 24px; background:
    radial-gradient(circle at 85% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 31%),
    linear-gradient(180deg, color-mix(in srgb, var(--surface-1) 97%, #fff 3%), var(--surface-1));
  box-shadow: var(--shadow-sm);
}
.auth-page { width: min(1180px, 100%); margin: 0 auto; }
.auth-hero { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; padding: 4px 2px 24px; }
.auth-hero-copy { display: grid; gap: 8px; }
.auth-kicker { color: var(--accent-hover); font-size: 11px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.auth-hero h1 { margin: 0; font-size: clamp(30px, 4vw, 48px); letter-spacing: -.035em; line-height: 1.05; }
.auth-hero p { margin: 0; max-width: 680px; color: var(--muted); line-height: 1.6; }
.auth-hero-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.auth-search { position: relative; min-width: min(310px, 100%); }
.auth-search span { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.auth-search input { width: 100%; padding-left: 37px; }
.auth-security-banner {
  display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 14px; margin-bottom: 20px; padding: 15px 17px;
  border: 1px solid var(--border); border-radius: 17px; background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--surface-2) 80%, transparent));
}
.auth-security-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; background: var(--surface-3); color: var(--accent-hover); font-size: 20px; }
.auth-security-copy { display: grid; gap: 3px; }
.auth-security-copy strong { color: var(--text); font-size: 13px; }
.auth-security-copy span { color: var(--muted); font-size: 11px; line-height: 1.5; }
.auth-security-status { padding: 7px 10px; border: 1px solid color-mix(in srgb, var(--success) 42%, transparent); border-radius: 999px; color: var(--success); background: color-mix(in srgb, var(--success) 10%, transparent); font-size: 10px; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.auth-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 15px; }
.auth-card {
  position: relative; display: grid; grid-template-columns: 54px 1fr auto; gap: 15px; align-items: center; min-height: 150px; padding: 20px;
  border: 1px solid var(--border); border-radius: 20px; background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 80%, transparent), color-mix(in srgb, var(--surface-1) 96%, transparent));
  box-shadow: 0 12px 38px rgba(0,0,0,.10); overflow: hidden; transition: transform .17s ease, border-color .17s ease, box-shadow .17s ease;
}
.auth-card::before { content: ''; position: absolute; inset: 0 auto 0 0; width: 3px; background: linear-gradient(180deg, var(--accent), #956cff); opacity: .85; }
.auth-card:hover { transform: translateY(-2px); border-color: var(--border-strong); box-shadow: 0 18px 48px rgba(0,0,0,.16); }
.auth-service-icon { width: 54px; height: 54px; display: grid; place-items: center; border-radius: 17px; color: #fff; font-size: 23px; font-weight: 900; background: linear-gradient(145deg, var(--accent), #9167ec); box-shadow: 0 12px 30px var(--accent-soft); }
.auth-card-main { min-width: 0; display: grid; gap: 7px; }
.auth-card-title { display: grid; gap: 2px; }
.auth-card-title strong, .auth-card-title span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth-card-title strong { font-size: 15px; color: var(--text); }
.auth-card-title span { color: var(--muted); font-size: 11px; }
.auth-code-row { display: flex; align-items: center; gap: 10px; }
.auth-code {
  border: 0; padding: 0; background: transparent; color: var(--text); cursor: pointer; font: 800 29px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .12em; white-space: nowrap;
}
.auth-code:hover { color: var(--accent-hover); }
.auth-copy-hint { color: var(--muted); font-size: 10px; }
.auth-card-side { display: grid; align-items: center; justify-items: end; gap: 13px; }
.auth-timer { position: relative; width: 48px; height: 48px; display: grid; place-items: center; }
.auth-timer svg { position: absolute; inset: 0; width: 48px; height: 48px; transform: rotate(-90deg); }
.auth-timer circle { fill: none; stroke-width: 4; }
.auth-timer .timer-track { stroke: var(--surface-3); }
.auth-timer .timer-progress { stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset .35s linear; }
.auth-timer span { font: 800 11px/1 ui-monospace, monospace; color: var(--muted-strong); }
.auth-card-menu { display: flex; gap: 6px; }
.auth-card-menu button { width: 34px; height: 34px; display: grid; place-items: center; padding: 0; }
.auth-empty { min-height: 370px; display: grid; place-items: center; text-align: center; padding: 40px; border: 1px dashed var(--border-strong); border-radius: 22px; background: color-mix(in srgb, var(--surface-2) 52%, transparent); }
.auth-empty-inner { max-width: 420px; display: grid; justify-items: center; gap: 12px; }
.auth-empty-icon { width: 72px; height: 72px; display: grid; place-items: center; border-radius: 23px; background: var(--surface-3); color: var(--accent); font-size: 31px; box-shadow: 0 16px 38px var(--accent-soft); }
.auth-empty h2 { margin: 0; font-size: 21px; }
.auth-empty p { margin: 0; color: var(--muted); line-height: 1.6; }
.auth-dialog-help { margin: -4px 0 2px; padding: 12px 13px; border-radius: 13px; border: 1px solid var(--border); background: var(--surface-2); color: var(--muted); font-size: 11px; line-height: 1.55; }
.auth-secret-input { min-height: 112px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.auth-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.auth-locked { color: var(--danger); font-weight: 800; font-size: 12px; }

@media (max-width: 900px) {
  .auth-view { height: calc(100vh - 28px); padding: 20px; }
  .auth-hero { align-items: stretch; flex-direction: column; }
  .auth-hero-actions { width: 100%; }
  .auth-search { flex: 1; min-width: 220px; }
}
@media (max-width: 720px) {
  .product-nav { grid-template-columns: 1fr 1fr; }
  .product-nav-button { grid-template-columns: 30px 1fr; }
  .product-nav-arrow, .product-nav-copy small { display: none; }
  .auth-view { height: auto; min-height: 78vh; padding: 16px; border-radius: 20px; }
  .auth-grid { grid-template-columns: 1fr; }
  .auth-security-banner { grid-template-columns: 42px 1fr; }
  .auth-security-status { grid-column: 2; justify-self: start; }
  .auth-form-grid { grid-template-columns: 1fr; }
  .auth-card { grid-template-columns: 48px minmax(0, 1fr); }
  .auth-card-side { grid-column: 1 / -1; display: flex; justify-content: space-between; width: 100%; }
  .auth-service-icon { width: 48px; height: 48px; }
  .auth-code { font-size: 25px; }
}