:root {
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
  --radius: 10px;
  --accent: #7c6cf2;
  --accent-2: #9b8cff;
  --accent-soft: rgba(124, 108, 242, 0.16);
  --danger: #f26c7c;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}
:root,
:root[data-theme='dark'] {
  --bg: #0e0e12;
  --bg-2: #15151b;
  --bg-3: #1c1c24;
  --line: #24242e;
  --text: #ececf1;
  --text-2: #a5a5b4;
  --text-3: #6c6c7c;
  --row-hover: #16161d;
  --row-sel: #1d1c28;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.55), 0 2px 8px rgba(0, 0, 0, 0.4);
}
:root[data-theme='light'] {
  --bg: #ffffff;
  --bg-2: #f6f6f9;
  --bg-3: #eeeef3;
  --line: #e7e7ee;
  --text: #17171c;
  --text-2: #5d5d6e;
  --text-3: #9a9aab;
  --row-hover: #f7f7fb;
  --row-sel: #f0eeff;
  --shadow: 0 24px 80px rgba(20, 20, 40, 0.18), 0 2px 8px rgba(20, 20, 40, 0.08);
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
}
button {
  font: inherit;
  color: inherit;
}
a {
  color: var(--accent-2);
}
kbd {
  font: 500 11px/1 var(--font);
  color: var(--text-3);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 2px 5px;
  margin-left: 6px;
  background: var(--bg-2);
}
::selection {
  background: var(--accent-soft);
}

/* ---------- shell ---------- */
.shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
}
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 28px 10px;
}
.box-title {
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.box-count {
  color: var(--text-3);
  margin-left: 8px;
  font-weight: 500;
}
.spacer {
  flex: 1;
}
.tb-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-2);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.tb-btn:hover {
  background: var(--bg-2);
  color: var(--text);
}
.tb-btn.primary {
  border-color: transparent;
  background: var(--accent);
  color: #fff;
}
.tb-btn.primary kbd {
  color: rgba(255, 255, 255, 0.75);
  border-color: rgba(255, 255, 255, 0.25);
  background: transparent;
}
.tabs {
  display: flex;
  gap: 2px;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
}
.tab {
  background: none;
  border: none;
  padding: 9px 10px 11px;
  color: var(--text-3);
  cursor: pointer;
  position: relative;
  font-weight: 550;
}
.tab:hover {
  color: var(--text-2);
}
.tab.on {
  color: var(--text);
}
.tab.on::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.tab .n {
  margin-left: 6px;
  color: var(--accent-2);
  font-weight: 600;
}
.accounts {
  display: flex;
  gap: 4px;
  margin-left: 6px;
}
.acct-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-3);
  border-radius: 999px;
  padding: 4px 10px;
  cursor: pointer;
  font-weight: 550;
  font-size: 12.5px;
}
.acct-btn:hover {
  color: var(--text-2);
  background: var(--bg-2);
}
.acct-btn.on {
  color: var(--text);
  border-color: var(--line);
  background: var(--bg-2);
}
.acct-btn .n {
  color: var(--accent-2);
  font-weight: 600;
}
.acct-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acct-color);
}
.acct {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border-radius: 5px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--acct-color);
  background: color-mix(in srgb, var(--acct-color) 14%, transparent);
  vertical-align: 1px;
}
[data-acct='0'] {
  --acct-color: #e0a54a;
}
[data-acct='1'] {
  --acct-color: #4ab0e0;
}
[data-acct='2'] {
  --acct-color: #5fcf8f;
}
.c-from select {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 4px;
  font: inherit;
  margin-left: 2px;
  max-width: 300px;
}
.search {
  flex: 0 1 380px;
  display: flex;
  align-items: center;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0 10px;
}
.search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font: inherit;
  padding: 7px 4px;
}
.search .icon {
  color: var(--text-3);
}
main {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
}

/* ---------- lista ---------- */
.list {
  list-style: none;
  margin: 0;
  padding: 6px 0 80px;
}
.row {
  display: grid;
  grid-template-columns: 22px 210px 1fr auto;
  align-items: center;
  gap: 14px;
  height: 46px;
  padding: 0 28px 0 18px;
  cursor: default;
  position: relative;
  border-left: 3px solid transparent;
}
.row:hover {
  background: var(--row-hover);
}
.row.sel {
  background: var(--row-sel);
  border-left-color: var(--accent);
}
.row .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  justify-self: center;
}
.row.unread .dot {
  background: var(--accent-2);
}
.row.checked .dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--accent);
  box-shadow: inset 0 0 0 3px var(--row-sel);
}
.row .who {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-2);
}
.row.unread .who {
  color: var(--text);
  font-weight: 650;
}
.row .who .n {
  color: var(--text-3);
  font-weight: 500;
  margin-left: 4px;
}
.row .what {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-3);
}
.row .subj {
  color: var(--text-2);
}
.row.unread .subj {
  color: var(--text);
  font-weight: 600;
}
.row .star {
  color: #f5c451;
  margin-right: 6px;
}
.row .when {
  color: var(--text-3);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
.row .hover-acts {
  display: none;
  gap: 2px;
}
.row:hover .when {
  display: none;
}
.row:hover .hover-acts {
  display: flex;
}
.icon-btn {
  background: none;
  border: none;
  color: var(--text-3);
  width: 28px;
  height: 28px;
  border-radius: 7px;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
}
.icon-btn:hover {
  background: var(--bg-3);
  color: var(--text);
}
.more {
  text-align: center;
  color: var(--text-3);
  padding: 16px;
}

/* ---------- inbox zero ---------- */
.zero {
  height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
  background: radial-gradient(1200px 600px at 50% 120%, rgba(124, 108, 242, 0.22), transparent 60%),
    radial-gradient(800px 400px at 80% -10%, rgba(91, 70, 224, 0.12), transparent 60%);
}
.zero h2 {
  font-size: 44px;
  margin: 0;
  letter-spacing: -0.03em;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.zero p {
  color: var(--text-3);
  margin: 10px 0 0;
}
.empty {
  padding: 60px;
  text-align: center;
  color: var(--text-3);
}

/* ---------- hilo ---------- */
.thread {
  max-width: 820px;
  margin: 0 auto;
  padding: 26px 32px 140px;
}
.th-top {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  margin-bottom: 14px;
}
.th-top .crumb {
  cursor: pointer;
}
.th-top .crumb:hover {
  color: var(--text);
}
.thread h1 {
  font-size: 23px;
  line-height: 1.3;
  margin: 0 0 6px;
  font-weight: 650;
  letter-spacing: -0.015em;
}
.th-sub {
  color: var(--text-3);
  margin-bottom: 22px;
}
.msg {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 12px;
  background: var(--bg);
  overflow: hidden;
}
.msg.collapsed {
  cursor: pointer;
}
.msg.collapsed:hover {
  background: var(--bg-2);
}
.msg-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 18px;
}
.avatar {
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 650;
  font-size: 13px;
  color: #fff;
}
.msg-who {
  flex: 1;
  min-width: 0;
}
.msg-who b {
  font-weight: 620;
}
.msg-who .addr {
  color: var(--text-3);
  margin-left: 6px;
}
.msg-who .to {
  color: var(--text-3);
  font-size: 12.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.msg.collapsed .msg-who .to {
  color: var(--text-3);
}
.msg time {
  color: var(--text-3);
  font-size: 12.5px;
  white-space: nowrap;
}
.msg-body {
  padding: 0 18px 18px 62px;
}
.text-body {
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.6;
}
.text-body .q {
  color: var(--text-3);
}
details.quoted summary {
  list-style: none;
  cursor: pointer;
  display: inline-block;
  color: var(--text-3);
  background: var(--bg-3);
  border-radius: 6px;
  padding: 0 8px;
  line-height: 18px;
  margin: 6px 0;
  letter-spacing: 0.15em;
}
details.quoted summary::-webkit-details-marker {
  display: none;
}
.html-wrap {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}
.html-wrap iframe {
  display: block;
  width: 100%;
  border: 0;
  min-height: 60px;
}
.img-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-3);
  margin: 0 0 10px;
}
.link-btn {
  background: none;
  border: none;
  color: var(--accent-2);
  cursor: pointer;
  padding: 0;
}
.atts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.att {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 8px;
  padding: 6px 10px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 12.5px;
}
.att:hover {
  color: var(--text);
}
.hint {
  color: var(--text-3);
  text-align: center;
  font-size: 12.5px;
  margin-top: 18px;
}

/* ---------- composer ---------- */
.composer {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.composer.inline {
  box-shadow: none;
  margin-top: 6px;
}
.compose-overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: start center;
  padding-top: 8vh;
  background: rgba(5, 5, 10, 0.45);
  backdrop-filter: blur(2px);
  animation: fade 0.12s var(--ease);
}
.compose-overlay .composer {
  width: min(760px, calc(100vw - 32px));
  max-height: 82vh;
  animation: rise 0.16s var(--ease);
}
.c-field {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 9px 18px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.c-field label {
  color: var(--text-3);
  width: 44px;
  flex: none;
  padding-top: 3px;
}
.chips {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  align-items: center;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-3);
  border-radius: 6px;
  padding: 2px 4px 2px 8px;
  font-size: 13px;
}
.chip.bad {
  background: rgba(242, 108, 124, 0.18);
  color: var(--danger);
}
.chip button {
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  padding: 0 3px;
}
.c-input {
  flex: 1;
  min-width: 140px;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font: inherit;
  padding: 3px 0;
}
.c-toggles {
  display: flex;
  gap: 8px;
  color: var(--text-3);
  font-size: 12.5px;
  padding-top: 3px;
}
.c-toggles button {
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
}
.c-toggles button:hover {
  color: var(--text);
}
.c-subject {
  font-weight: 600;
}
.c-body {
  flex: 1;
  min-height: 220px;
  resize: none;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font: 14.5px/1.6 var(--font);
  padding: 16px 18px;
}
.composer.inline .c-body {
  min-height: 140px;
}
.c-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}
.c-from {
  color: var(--text-3);
  font-size: 12.5px;
}
.suggest {
  position: absolute;
  left: 62px;
  top: 100%;
  z-index: 5;
  min-width: 320px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 4px;
}
.suggest div {
  padding: 7px 10px;
  border-radius: 7px;
  cursor: pointer;
}
.suggest div.on {
  background: var(--accent-soft);
}
.suggest small {
  color: var(--text-3);
  margin-left: 6px;
}
.c-atts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 18px 10px;
}

/* ---------- paleta / ayuda ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: start center;
  padding-top: 14vh;
  background: rgba(5, 5, 10, 0.5);
  animation: fade 0.1s var(--ease);
}
.palette {
  width: min(620px, calc(100vw - 32px));
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: rise 0.14s var(--ease);
}
.palette input {
  width: 100%;
  background: none;
  border: none;
  border-bottom: 1px solid var(--line);
  outline: none;
  color: var(--text);
  font: 16px var(--font);
  padding: 16px 20px;
}
.palette ul {
  list-style: none;
  margin: 0;
  padding: 6px;
  max-height: 50vh;
  overflow-y: auto;
}
.palette li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 14px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-2);
}
.palette li.on {
  background: var(--accent-soft);
  color: var(--text);
}
.palette li kbd {
  margin-left: 4px;
}
.help {
  width: min(860px, calc(100vw - 32px));
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 24px 28px;
  columns: 2;
  column-gap: 40px;
  animation: rise 0.14s var(--ease);
}
.help h3 {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  break-after: avoid;
}
.help .grp {
  break-inside: avoid;
  margin-bottom: 18px;
}
.help .k {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  color: var(--text-2);
}

/* ---------- toasts ---------- */
#toast-root {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
.toast {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #23222e;
  color: #ececf1;
  border-radius: 10px;
  padding: 10px 14px 10px 16px;
  box-shadow: var(--shadow);
  animation: rise 0.16s var(--ease);
  font-size: 13.5px;
}
.toast button {
  background: none;
  border: none;
  color: var(--accent-2);
  font-weight: 600;
  cursor: pointer;
}
.toast .bar {
  height: 2px;
  background: var(--accent);
  position: absolute;
}

/* ---------- auth ---------- */
.auth {
  display: grid;
  place-items: center;
  min-height: 100vh;
  background: radial-gradient(900px 500px at 50% 110%, rgba(124, 108, 242, 0.25), transparent 60%), var(--bg);
}
.auth-card {
  width: min(380px, calc(100vw - 32px));
  text-align: center;
  padding: 40px 32px;
}
.auth-card h1 {
  font-size: 26px;
  margin: 18px 0 6px;
  letter-spacing: -0.02em;
}
.auth-card p {
  color: var(--text-3);
  margin: 0 0 24px;
}
.auth-card input {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  padding: 12px 14px;
  outline: none;
  margin-bottom: 12px;
}
.auth-card input:focus {
  border-color: var(--accent);
}
.brand-mark {
  width: 52px;
  height: 52px;
  margin: 0 auto;
  border-radius: 14px;
  background: url('/static/icon.svg') center / cover;
}
.btn {
  width: 100%;
  border: none;
  border-radius: 10px;
  padding: 12px;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-3);
  color: var(--text);
}
.btn.primary {
  background: var(--accent);
  color: #fff;
}
.btn:disabled {
  opacity: 0.6;
}

/* Sin animar la opacidad: todo se ve al instante (y nunca queda translúcido si la pestaña se pausa). */
@keyframes fade {
  from {
    background-color: transparent;
  }
}
@keyframes rise {
  from {
    transform: translateY(6px) scale(0.995);
  }
}

@media (max-width: 760px) {
  .topbar {
    padding: 12px 16px 8px;
  }
  .tabs {
    padding: 0 10px;
    overflow-x: auto;
  }
  .topbar {
    flex-wrap: wrap;
  }
  .accounts {
    order: 3;
    width: 100%;
    margin-left: 0;
    overflow-x: auto;
  }
  .row {
    grid-template-columns: 14px 1fr auto;
    height: auto;
    padding: 10px 16px 10px 10px;
    gap: 2px 10px;
  }
  .row .who {
    grid-column: 2;
  }
  .row .when {
    grid-column: 3;
    grid-row: 1;
  }
  .row .what {
    grid-column: 2 / 4;
  }
  .row:hover .when {
    display: block;
  }
  .row:hover .hover-acts {
    display: none;
  }
  .thread {
    padding: 18px 16px 120px;
  }
  .msg-body {
    padding: 0 14px 14px;
  }
  .search {
    display: none;
  }
  .search.open {
    display: flex;
  }
  .tb-btn kbd {
    display: none;
  }
}