:root {
  --center-bg: #f4f7fb;
  --center-surface: #ffffff;
  --center-surface-soft: #f8fafc;
  --center-ink: #172033;
  --center-muted: #667085;
  --center-line: #e4e9f1;
  --center-primary: #155eef;
  --center-primary-dark: #1047b8;
  --center-primary-soft: #eaf1ff;
  --center-sidebar: #101828;
  --center-sidebar-hover: #1d2939;
  --center-danger: #d92d20;
  --center-radius: 12px;
  --center-shadow: 0 12px 35px rgba(16, 24, 40, .08);
}

body,
button,
input,
optgroup,
select,
textarea,
.popover {
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body { color: var(--center-ink); }
a { color: var(--center-primary); }
a:hover { color: var(--center-primary-dark); }

#layout-sidebar,
#layout-list,
#layout-content {
  border-color: var(--center-line);
  background: var(--center-surface);
}

#layout > div > .header {
  color: var(--center-ink);
  border-color: var(--center-line);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(12px);
}

#layout > div > .footer {
  border-color: var(--center-line);
  background: var(--center-surface);
}

#layout-menu,
#layout-menu .popover-header,
#taskmenu .special-buttons {
  background: var(--center-sidebar) !important;
}

#layout-menu {
  box-shadow: 5px 0 18px rgba(16, 24, 40, .08);
}

#layout-menu .popover-header img {
  padding: .38rem;
  filter: drop-shadow(0 6px 12px rgba(21, 94, 239, .2));
}

html:not(.layout-phone) #taskmenu a {
  margin: 3px 8px;
  width: calc(100% - 16px);
  border-radius: 10px;
  color: #d0d5dd;
  transition: background-color .15s ease, color .15s ease, transform .15s ease;
}

html:not(.layout-phone) #taskmenu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}

html:not(.layout-phone) #taskmenu a.selected {
  color: #fff;
  background: var(--center-sidebar-hover);
  box-shadow: inset 3px 0 var(--center-primary);
}

html:not(.layout-phone) #taskmenu .action-buttons a.compose {
  color: #fff;
  background: var(--center-primary);
  box-shadow: 0 7px 16px rgba(21, 94, 239, .28);
}

html:not(.layout-phone) #taskmenu .action-buttons a.compose:hover {
  background: #2970ff;
  transform: translateY(-1px);
}

.searchbar {
  padding: .55rem .65rem;
  border-bottom: 1px solid var(--center-line);
  background: var(--center-surface);
}

.searchbar form {
  overflow: hidden;
  border: 1px solid #d0d5dd;
  border-radius: 10px;
  background: var(--center-surface-soft);
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}

.searchbar form:focus-within {
  border-color: var(--center-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(21, 94, 239, .12);
}

.searchbar input { color: var(--center-ink); background: transparent; }

.listing tbody td,
.listing li {
  border-color: #edf0f5;
}

.listing tbody tr,
.listing li > a {
  transition: background-color .12s ease, color .12s ease;
}

html:not(.touch) .listing tbody tr:hover td,
html:not(.touch) .listing li:hover > a {
  background: var(--center-surface-soft);
}

.listing tr.selected td,
.listing li.selected,
.listing li.selected > a {
  color: var(--center-ink);
  background: var(--center-primary-soft) !important;
}

.messagelist tr.unread td { font-weight: 700; }
.messagelist tr.unread td.subject { color: #0f172a; }
.messagelist span.date,
.messagelist span.size,
.listing span.secondary { color: var(--center-muted); }

.folderlist { padding: .45rem .5rem .8rem; }
.folderlist li { border-bottom: 0; }
.folderlist li > a {
  width: calc(100% - 2px);
  margin: 2px 1px;
  border-radius: 9px;
}
.folderlist li.selected > a { font-weight: 700; }
.folderlist li.mailbox .unreadcount {
  min-width: 23px;
  padding: 0 .45rem;
  border-radius: 999px;
  color: #fff;
  background: var(--center-primary);
}

.btn { border-radius: 9px; font-weight: 700; }
.btn-primary,
.btn-primary:not(:disabled):not(.disabled):active {
  border-color: var(--center-primary);
  background: var(--center-primary);
  box-shadow: 0 5px 13px rgba(21, 94, 239, .2);
}
.btn-primary:hover,
.btn-primary:focus {
  border-color: var(--center-primary-dark);
  background: var(--center-primary-dark);
}

.form-control,
.custom-select,
.recipient-input,
input[type="text"],
input[type="password"],
input[type="email"],
textarea {
  border-color: #cfd6e1;
  border-radius: 9px;
}

.form-control:focus,
.custom-select:focus,
.recipient-input.focus,
input:focus,
textarea:focus {
  border-color: var(--center-primary);
  box-shadow: 0 0 0 3px rgba(21, 94, 239, .12);
}

.custom-control-input:checked ~ .custom-control-label::before {
  border-color: var(--center-primary);
  background: var(--center-primary);
}

.popover,
.ui-dialog,
.menu.pagenav {
  border-color: var(--center-line);
  border-radius: var(--center-radius);
  box-shadow: var(--center-shadow);
}

.menu a:not(.disabled):focus,
.menu a:not(.disabled):hover,
.menu a.selected {
  color: var(--center-ink);
  background: var(--center-primary-soft);
}

.listing-hover-menu {
  border-color: var(--center-line);
  border-radius: 9px;
  background: rgba(255, 255, 255, .97);
  box-shadow: 0 8px 22px rgba(16, 24, 40, .12);
}

.quota-widget .bar {
  overflow: hidden;
  height: 7px;
  border-color: var(--center-line);
  border-radius: 999px;
  background: #e9edf4;
}
.quota-widget .bar .value { background: var(--center-primary); }

#message-header > .subject {
  color: var(--center-ink);
  font-size: 1.55rem;
  letter-spacing: -.025em;
}
#message-header img.contactphoto { box-shadow: 0 0 0 3px var(--center-primary-soft); }

.ui.alert { border-radius: 10px; box-shadow: 0 8px 24px rgba(16, 24, 40, .12); }

/* Login */
.task-login #layout-content.center-login {
  position: relative;
  display: grid;
  place-items: center;
  overflow: auto;
  min-height: 100%;
  padding: 2rem 1rem;
  text-align: left;
  background:
    linear-gradient(135deg, rgba(16, 24, 40, .97), rgba(11, 18, 32, .96)),
    var(--center-sidebar);
}

.center-login-glow {
  position: fixed;
  width: 34rem;
  height: 34rem;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(2px);
}
.center-login-glow-one {
  top: -17rem;
  left: -12rem;
  background: radial-gradient(circle, rgba(41, 112, 255, .3), transparent 68%);
}
.center-login-glow-two {
  right: -14rem;
  bottom: -19rem;
  background: radial-gradient(circle, rgba(6, 118, 71, .2), transparent 68%);
}

.center-login-card {
  position: relative;
  z-index: 1;
  width: min(100%, 455px);
  padding: clamp(1.65rem, 5vw, 2.55rem);
  border: 1px solid rgba(255, 255, 255, .6);
  border-radius: 22px;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .3);
}

.task-login #logo {
  position: static;
  display: block;
  width: min(100%, 260px);
  max-height: 64px;
  margin: 0 0 2rem;
}

.center-login-copy { margin-bottom: 1.5rem; }
.center-login-copy h2 {
  margin: .3rem 0 .55rem;
  color: var(--center-ink);
  font-size: clamp(1.75rem, 5vw, 2.05rem);
  font-weight: 750;
  letter-spacing: -.04em;
}
.center-login-copy p { margin: 0; color: var(--center-muted); line-height: 1.55; }
.center-eyebrow {
  color: var(--center-primary);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.task-login #login-form {
  position: static;
  width: 100%;
  max-width: none;
  margin: 0;
}

.task-login #login-form .form-control {
  min-height: 44px;
  background: #fff;
}
.task-login #login-form .formbuttons { margin-top: 1.25rem; }
.task-login #rcmloginsubmit {
  width: 100%;
  min-height: 45px;
  border-radius: 9px;
  font-size: .9rem;
}
.task-login .login-domain-hint {
  display: block !important;
  flex: 0 0 100%;
  width: 100%;
  margin: .4rem 0 0;
  color: var(--center-muted);
  font-size: .75rem;
}

.task-login #login-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.45rem;
  color: var(--center-muted);
  font-size: .73rem;
}
.task-login #login-footer > div { margin: 0; padding: 0; background: transparent; }
.center-secure-note::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: .42rem;
  border-radius: 50%;
  background: #12b76a;
  box-shadow: 0 0 0 3px rgba(18, 183, 106, .12);
}

/* Dark mode */
html.dark-mode {
  --center-bg: #101722;
  --center-surface: #171f2d;
  --center-surface-soft: #1d2939;
  --center-ink: #eaecf0;
  --center-muted: #98a2b3;
  --center-line: #344054;
  --center-primary-soft: rgba(41, 112, 255, .18);
}
html.dark-mode #layout-sidebar,
html.dark-mode #layout-list,
html.dark-mode #layout-content,
html.dark-mode #layout > div > .footer { background: var(--center-surface); }
html.dark-mode #layout > div > .header { background: rgba(23, 31, 45, .94); }
html.dark-mode .searchbar { border-color: var(--center-line); background: var(--center-surface); }
html.dark-mode .searchbar form { border-color: #475467; background: var(--center-surface-soft); }
html.dark-mode .messagelist tr.unread td.subject { color: #f9fafb; }
html.dark-mode .listing-hover-menu { border-color: var(--center-line); background: #1d2939; }
html.dark-mode .center-login-card { background: rgba(23, 31, 45, .98); }
html.dark-mode .task-login #login-form .form-control { color: #f2f4f7; border-color: #475467; background: #101828; }

@media (max-width: 768px) {
  #layout > div > .header { background: var(--center-surface); }
  .center-login-card { border-radius: 18px; }
}

@media (max-width: 480px) {
  .task-login #layout-content.center-login { padding: 1rem .75rem; background: var(--center-sidebar); }
  .center-login-card { padding: 1.5rem 1.25rem; }
  .task-login #logo { width: 230px; margin-bottom: 1.5rem; }
  .task-login #login-footer { align-items: flex-start; flex-direction: column; gap: .65rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}