/* Roundcube-compatible visual skins.
   Palette values are aligned to Roundcube Classic and Elastic upstream CSS.
   Classic never shipped an official dark skin; the dark block is a contrast-preserving adaptation. */

/* ---------- Roundcube Classic ---------- */
html[data-interface-skin="roundcube-classic"] {
  --font-sans: "Lucida Grande", Verdana, Arial, Helvetica, sans-serif;
  --font-mono: Monaco, "Courier New", monospace;
  --radius-control: 0px;
  --radius-panel: 0px;
}

html[data-interface-skin="roundcube-classic"][data-theme="light"] {
  color-scheme: light;
  --bg: #f6f6f6;
  --panel: #ffffff;
  --panel-2: #f2f2f2;
  --panel-3: #ebebeb;
  --sidebar: #ffffff;
  --line: #ebebeb;
  --line-strong: #999999;
  --text: #000000;
  --muted: #666666;
  --subtle: #888888;
  --accent: #cc3333;
  --accent-strong: #b32323;
  --accent-ink: #ffffff;
  --danger: #cc0000;
  --warning: #8a6700;
  --success: #4b7f3e;
  --field: #ffffff;
  --selected: #cc3333;
  --hover: #f2f2f2;
  --shadow: rgba(0, 0, 0, .22);
  --folder-bg: #ffffff;
  --message-bg: #ffffff;
  --reader-bg: #ffffff;
}

html[data-interface-skin="roundcube-classic"][data-theme="dark"] {
  color-scheme: dark;
  --bg: #191919;
  --panel: #242424;
  --panel-2: #2e2e2e;
  --panel-3: #363636;
  --sidebar: #202020;
  --line: #383838;
  --line-strong: #707070;
  --text: #f2f2f2;
  --muted: #b7b7b7;
  --subtle: #929292;
  --accent: #d34b4b;
  --accent-strong: #e06060;
  --accent-ink: #ffffff;
  --danger: #ff6666;
  --warning: #d2aa4b;
  --success: #83ad76;
  --field: #1d1d1d;
  --selected: #9e3333;
  --hover: #303030;
  --shadow: rgba(0, 0, 0, .45);
  --folder-bg: #202020;
  --message-bg: #242424;
  --reader-bg: #242424;
}

html[data-interface-skin="roundcube-classic"] body {
  font-family: var(--font-sans);
  letter-spacing: 0;
}

html[data-interface-skin="roundcube-classic"] .appbar,
html[data-interface-skin="roundcube-classic"] .pane-toolbar,
html[data-interface-skin="roundcube-classic"] .reader-toolbar,
html[data-interface-skin="roundcube-classic"] .dialog-header {
  box-shadow: none;
}

html[data-interface-skin="roundcube-classic"][data-theme="light"] .appbar,
html[data-interface-skin="roundcube-classic"][data-theme="light"] .pane-toolbar,
html[data-interface-skin="roundcube-classic"][data-theme="light"] .reader-toolbar,
html[data-interface-skin="roundcube-classic"][data-theme="light"] .dialog-header,
html[data-interface-skin="roundcube-classic"][data-theme="light"] .section-heading {
  background: linear-gradient(#f4f4f4, #cccccc);
  border-color: #999999;
  color: #333333;
}

html[data-interface-skin="roundcube-classic"][data-theme="dark"] .appbar,
html[data-interface-skin="roundcube-classic"][data-theme="dark"] .pane-toolbar,
html[data-interface-skin="roundcube-classic"][data-theme="dark"] .reader-toolbar,
html[data-interface-skin="roundcube-classic"][data-theme="dark"] .dialog-header,
html[data-interface-skin="roundcube-classic"][data-theme="dark"] .section-heading {
  background: linear-gradient(#3a3a3a, #292929);
  border-color: #666666;
  color: #f2f2f2;
}

html[data-interface-skin="roundcube-classic"] .section-heading {
  min-height: 22px;
  margin: 7px -10px 3px;
  padding: 3px 8px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  font-size: 10px;
  letter-spacing: 0;
  text-transform: none;
}

html[data-interface-skin="roundcube-classic"] input,
html[data-interface-skin="roundcube-classic"] select,
html[data-interface-skin="roundcube-classic"] textarea,
html[data-interface-skin="roundcube-classic"] .search-field {
  border-color: var(--line-strong);
  border-radius: 0;
  box-shadow: none;
}

html[data-interface-skin="roundcube-classic"] input:focus,
html[data-interface-skin="roundcube-classic"] select:focus,
html[data-interface-skin="roundcube-classic"] textarea:focus,
html[data-interface-skin="roundcube-classic"] [contenteditable="true"]:focus,
html[data-interface-skin="roundcube-classic"] .search-field:focus-within {
  border-color: #cc3333;
  box-shadow: 0 0 0 1px #cc3333;
}

html[data-interface-skin="roundcube-classic"] .button,
html[data-interface-skin="roundcube-classic"] .appearance-preset {
  border-radius: 0;
  box-shadow: none;
}

html[data-interface-skin="roundcube-classic"][data-theme="light"] .button,
html[data-interface-skin="roundcube-classic"][data-theme="light"] .button.primary {
  border-color: #a4a4a4;
  background: linear-gradient(#ffffff, #e2e2e2);
  color: #333333;
}

html[data-interface-skin="roundcube-classic"][data-theme="light"] .button:hover,
html[data-interface-skin="roundcube-classic"][data-theme="light"] .button.primary:hover {
  border-color: #777777;
  background: linear-gradient(#ffffff, #d5d5d5);
}

html[data-interface-skin="roundcube-classic"][data-theme="dark"] .button,
html[data-interface-skin="roundcube-classic"][data-theme="dark"] .button.primary {
  border-color: #6f6f6f;
  background: linear-gradient(#3c3c3c, #292929);
  color: #f2f2f2;
}

html[data-interface-skin="roundcube-classic"] .button.danger,
html[data-interface-skin="roundcube-classic"] a {
  color: var(--danger);
}

html[data-interface-skin="roundcube-classic"] .folder-button {
  border-radius: 0;
  min-height: var(--sidebar-item-height);
  padding-top: 2px;
  padding-bottom: 2px;
}

html[data-interface-skin="roundcube-classic"] .folder-button.active {
  background: #929292;
  border-color: #929292;
  color: #ffffff;
  font-weight: 700;
}

html[data-interface-skin="roundcube-classic"] .folder-button.active .folder-count,
html[data-interface-skin="roundcube-classic"] .folder-button.active svg {
  color: #ffffff;
}

html[data-interface-skin="roundcube-classic"] .message-row {
  border-bottom-color: var(--line);
  border-radius: 0;
  box-shadow: none;
}

html[data-interface-skin="roundcube-classic"] .message-row.active,
html[data-interface-skin="roundcube-classic"] .message-row.selected {
  background: var(--selected);
  color: #ffffff;
}

html[data-interface-skin="roundcube-classic"] .message-row.active .message-date,
html[data-interface-skin="roundcube-classic"] .message-row.active .message-snippet,
html[data-interface-skin="roundcube-classic"] .message-row.active .message-state,
html[data-interface-skin="roundcube-classic"] .message-row.selected .message-date,
html[data-interface-skin="roundcube-classic"] .message-row.selected .message-snippet {
  color: #ffffff;
  border-color: rgba(255,255,255,.8);
}

html[data-interface-skin="roundcube-classic"] .settings-tab {
  border-radius: 0;
}

html[data-interface-skin="roundcube-classic"] .settings-tab.active {
  background: #929292;
  color: #ffffff;
}

html[data-interface-skin="roundcube-classic"] .dialog-card,
html[data-interface-skin="roundcube-classic"] .login-panel,
html[data-interface-skin="roundcube-classic"] .appearance-preset,
html[data-interface-skin="roundcube-classic"] .diagnostic-card {
  border-radius: 0;
}

/* ---------- Roundcube Elastic ---------- */
html[data-interface-skin="roundcube-elastic"] {
  --font-sans: Roboto, "Segoe UI", Arial, sans-serif;
  --radius-control: .3rem;
  --radius-panel: .3rem;
}

html[data-interface-skin="roundcube-elastic"][data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff;
  --panel: #ffffff;
  --panel-2: #f4f4f4;
  --panel-3: #fbfbfb;
  --sidebar: #ffffff;
  --line: #dddddd;
  --line-strong: #ced4da;
  --text: #2b3438;
  --muted: #737f84;
  --subtle: #879298;
  --accent: #37beff;
  --accent-strong: #00acff;
  --accent-ink: #ffffff;
  --danger: #ff5552;
  --warning: #a27d00;
  --success: #41b849;
  --field: #ffffff;
  --selected: #ebf8ff;
  --hover: #f4fafe;
  --shadow: rgba(22, 27, 29, .18);
  --folder-bg: #ffffff;
  --message-bg: #ffffff;
  --reader-bg: #ffffff;
}

html[data-interface-skin="roundcube-elastic"][data-theme="dark"] {
  color-scheme: dark;
  --bg: #21292c;
  --panel: #21292c;
  --panel-2: #2f3a3f;
  --panel-3: #283236;
  --sidebar: #21292c;
  --line: #3a494e;
  --line-strong: #4d6066;
  --text: #c5d1d3;
  --muted: #9dafb3;
  --subtle: #85999e;
  --accent: #37beff;
  --accent-strong: #55c7ff;
  --accent-ink: #07181f;
  --danger: #ff7774;
  --warning: #ffd452;
  --success: #65c86c;
  --field: #21292c;
  --selected: #374549;
  --hover: #2c373a;
  --shadow: rgba(0, 0, 0, .42);
  --folder-bg: #21292c;
  --message-bg: #21292c;
  --reader-bg: #21292c;
}

html[data-interface-skin="roundcube-elastic"] body {
  font-family: var(--font-sans);
  line-height: 1.5;
}

html[data-interface-skin="roundcube-elastic"] .appbar,
html[data-interface-skin="roundcube-elastic"] .pane-toolbar,
html[data-interface-skin="roundcube-elastic"] .reader-toolbar,
html[data-interface-skin="roundcube-elastic"] .dialog-header {
  background: #f4f4f4;
  box-shadow: none;
}

html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .appbar,
html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .pane-toolbar,
html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .reader-toolbar,
html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .dialog-header {
  background: #2f3a3f;
}

html[data-interface-skin="roundcube-elastic"] input,
html[data-interface-skin="roundcube-elastic"] select,
html[data-interface-skin="roundcube-elastic"] textarea,
html[data-interface-skin="roundcube-elastic"] .search-field {
  border-color: var(--line-strong);
  box-shadow: none;
}

html[data-interface-skin="roundcube-elastic"][data-theme="dark"] input,
html[data-interface-skin="roundcube-elastic"][data-theme="dark"] select,
html[data-interface-skin="roundcube-elastic"][data-theme="dark"] textarea,
html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .search-field {
  border-color: #7c949c;
}

html[data-interface-skin="roundcube-elastic"] input:focus,
html[data-interface-skin="roundcube-elastic"] select:focus,
html[data-interface-skin="roundcube-elastic"] textarea:focus,
html[data-interface-skin="roundcube-elastic"] [contenteditable="true"]:focus,
html[data-interface-skin="roundcube-elastic"] .search-field:focus-within {
  border-color: #37beff;
  box-shadow: 0 0 0 1px #37beff;
}

html[data-interface-skin="roundcube-elastic"] .button.primary {
  border-color: #37beff;
  background: #37beff;
  color: #ffffff;
}

html[data-interface-skin="roundcube-elastic"] .button.primary:hover {
  border-color: #00acff;
  background: #00acff;
}

html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .button.primary {
  border-color: #006a9d;
  background: #006a9d;
  color: #ffffff;
}

html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .button.primary:hover {
  border-color: #007fb9;
  background: #007fb9;
}

html[data-interface-skin="roundcube-elastic"] .folder-button.active,
html[data-interface-skin="roundcube-elastic"] .message-row.active,
html[data-interface-skin="roundcube-elastic"] .message-row.selected,
html[data-interface-skin="roundcube-elastic"] .settings-tab.active {
  background: var(--selected);
  border-color: var(--line);
  color: var(--text);
}

html[data-interface-skin="roundcube-elastic"] .folder-count.unread,
html[data-interface-skin="roundcube-elastic"] .message-row.unread .message-state,
html[data-interface-skin="roundcube-elastic"] .brand-icon {
  color: #37beff;
}

html[data-interface-skin="roundcube-elastic"] .message-row.unread .message-state {
  background: #37beff;
  border-color: #37beff;
}

html[data-interface-skin="roundcube-elastic"] .section-heading {
  color: var(--muted);
  letter-spacing: .04em;
}

html[data-interface-skin="roundcube-elastic"] .appearance-preset:focus-visible,
html[data-interface-skin="roundcube-elastic"] .appearance-preset:hover {
  border-color: #37beff;
}

/* Mobile drawer follows the active skin and uses Roundcube Elastic's back affordance. */
@media (max-width: 820px) {
  .folder-drawer-header.mobile-only {
    display: grid;
    width: auto;
    min-height: 42px;
    grid-template-columns: 34px minmax(0, 1fr) 34px;
    align-items: center;
    gap: 6px;
    margin: -10px -10px 8px;
    padding: 4px 8px;
    border-bottom: 1px solid var(--line);
    background: var(--panel-2);
  }

  .folder-drawer-header strong {
    grid-column: 2;
    justify-self: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .folder-drawer-close {
    grid-column: 1;
    position: static;
    width: 34px;
    height: 34px;
    background: transparent;
    border: 0;
    color: var(--text);
  }

  .folder-drawer-close svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
  }

  .folder-pane .compose-button {
    padding-right: var(--button-pad-x);
  }

  html[data-interface-skin="roundcube-classic"] .folder-drawer-header {
    min-height: 32px;
    background: linear-gradient(#f4f4f4, #cccccc);
    border-color: #999999;
  }

  html[data-interface-skin="roundcube-classic"][data-theme="dark"] .folder-drawer-header {
    background: linear-gradient(#3a3a3a, #292929);
    border-color: #666666;
  }

  html[data-interface-skin="roundcube-elastic"] .folder-drawer-header {
    min-height: 58px;
    background: #f4f4f4;
  }

  html[data-interface-skin="roundcube-elastic"][data-theme="dark"] .folder-drawer-header {
    background: #2f3a3f;
  }
}