@import url("../../elastic/styles/styles.min.css");

/* =====================================================================
   Nebula Mail skin — override layer for Roundcube Elastic
   Inherits all of Elastic via the @import above; everything below only
   *adds to or refines* Elastic. No core template/JS is replaced.
   Design language: a calm, translucent, iCloud-Mail-inspired surface,
   branded Nebula Mail. Original work (CC-BY-SA-4.0 design / GPL-3.0 code).
   ===================================================================== */

/* ---- Design tokens (light) ---- */
:root {
  --nebula-accent: #0a84ff;
  --nebula-accent-hover: #0077ed;
  --nebula-accent-soft: rgba(10, 132, 255, 0.10);
  --nebula-accent-press: #0060df;

  --nebula-bg: #f5f6f8;
  --nebula-bg-grad: radial-gradient(120% 120% at 100% 0%, #eaf1fb 0%, rgba(234,241,251,0) 45%), #f5f6f8;
  --nebula-surface: rgba(255, 255, 255, 0.82);
  --nebula-surface-solid: #ffffff;
  --nebula-surface-raised: #fbfbfd;
  --nebula-sidebar: rgba(241, 243, 247, 0.88);
  --nebula-overlay: rgba(255, 255, 255, 0.72);

  --nebula-text: #1d1d1f;
  --nebula-text-secondary: #68686d;
  --nebula-text-tertiary: #8e8e93;
  --nebula-separator: rgba(60, 60, 67, 0.14);
  --nebula-separator-strong: rgba(60, 60, 67, 0.22);
  --nebula-selection: rgba(10, 132, 255, 0.12);
  --nebula-selection-strong: rgba(10, 132, 255, 0.18);

  --nebula-radius-small: 8px;
  --nebula-radius-medium: 12px;
  --nebula-radius-large: 18px;

  --nebula-shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
  --nebula-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.06);
  --nebula-ring: 0 0 0 3px rgba(10, 132, 255, 0.28);

  --nebula-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --nebula-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --nebula-dur: 160ms;
}

/* ---- Design tokens (dark) — intentionally designed, not inverted ---- */
.dark-mode {
  --nebula-accent: #3a9bff;
  --nebula-accent-hover: #5cb0ff;
  --nebula-accent-soft: rgba(58, 155, 255, 0.14);
  --nebula-accent-press: #1f86f5;

  --nebula-bg: #1c1f24;
  --nebula-bg-grad: radial-gradient(120% 120% at 100% 0%, #222934 0%, rgba(34,41,52,0) 45%), #1c1f24;
  --nebula-surface: rgba(36, 40, 47, 0.82);
  --nebula-surface-solid: #262a31;
  --nebula-surface-raised: #2c3138;
  --nebula-sidebar: rgba(28, 32, 39, 0.90);
  --nebula-overlay: rgba(28, 32, 39, 0.78);

  --nebula-text: #e9eaed;
  --nebula-text-secondary: #a9adb5;
  --nebula-text-tertiary: #8a8f98;
  --nebula-separator: rgba(255, 255, 255, 0.10);
  --nebula-separator-strong: rgba(255, 255, 255, 0.16);
  --nebula-selection: rgba(58, 155, 255, 0.18);
  --nebula-selection-strong: rgba(58, 155, 255, 0.26);

  --nebula-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --nebula-shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.35);
  --nebula-ring: 0 0 0 3px rgba(58, 155, 255, 0.34);
}

/* ---- Base typography & app surface ---- */
html, body {
  font-family: var(--nebula-font);
  color: var(--nebula-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  background: var(--nebula-bg-grad);
}
#layout {
  background: transparent;
}

/* The three panels read as a calm, layered surface with fine separators. */
#layout > .sidebar,
#layout-sidebar,
#layout-list,
#layout-content,
#layout > .content {
  background: var(--nebula-surface);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
}
#layout-sidebar {
  background: var(--nebula-sidebar);
  border-right: 1px solid var(--nebula-separator);
}
#layout-list {
  border-right: 1px solid var(--nebula-separator);
  background: var(--nebula-surface);
}
#layout-content {
  background: var(--nebula-surface-solid);
}

/* ---- Unified "top bar" feel across the per-column headers ---- */
#layout .header {
  border-bottom: 1px solid var(--nebula-separator);
  background: var(--nebula-overlay);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  min-height: 52px;
}
#layout .header .header-title {
  color: var(--nebula-text);
  font-weight: 600;
  letter-spacing: -0.01em;
}
/* Username stays present but subtle; the avatar carries the account affordance */
#layout-sidebar .header .header-title.username {
  color: var(--nebula-text-secondary);
  font-weight: 500;
  font-size: 0.92em;
}

/* ---- Search field: prominent, soft, central ---- */
.searchbar form {
  background: var(--nebula-surface-raised);
  border: 1px solid var(--nebula-separator);
  border-radius: var(--nebula-radius-medium);
  box-shadow: none;
  margin: 8px;
  transition: border-color var(--nebula-dur) var(--nebula-ease),
              box-shadow var(--nebula-dur) var(--nebula-ease),
              background var(--nebula-dur) var(--nebula-ease);
}
.searchbar form:focus-within {
  border-color: var(--nebula-accent);
  box-shadow: var(--nebula-ring);
  background: var(--nebula-surface-solid);
}
.searchbar input {
  color: var(--nebula-text);
  font-family: var(--nebula-font);
}
.searchbar input::placeholder { color: var(--nebula-text-tertiary); }

/* ---- Toolbar / icon buttons: refined, accessible ---- */
#layout .toolbar .button,
#layout .header .button.icon {
  border-radius: var(--nebula-radius-small);
  color: var(--nebula-text-secondary);
  transition: background var(--nebula-dur) var(--nebula-ease),
              color var(--nebula-dur) var(--nebula-ease),
              transform var(--nebula-dur) var(--nebula-ease);
}
#layout .toolbar .button:hover,
#layout .header .button.icon:hover {
  background: var(--nebula-accent-soft);
  color: var(--nebula-accent);
}
#layout .toolbar .button:active,
#layout .header .button.icon:active { transform: scale(0.96); }
#layout .toolbar .button.selected { background: var(--nebula-selection); color: var(--nebula-accent); }

/* ---- Sidebar folder list ---- */
#mailboxlist li a,
.folderlist li a,
.treelist li a {
  border-radius: var(--nebula-radius-small);
  color: var(--nebula-text);
  transition: background var(--nebula-dur) var(--nebula-ease), color var(--nebula-dur) var(--nebula-ease);
  margin: 1px 6px;
}
#mailboxlist li a:hover,
.folderlist li a:hover,
.treelist li a:hover {
  background: var(--nebula-accent-soft);
  color: var(--nebula-text);
}
#mailboxlist li.selected > a,
.folderlist li.selected > a,
.treelist li.selected > a,
#mailboxlist li a.selected {
  background: var(--nebula-selection) !important;
  color: var(--nebula-accent) !important;
  font-weight: 600;
}
/* keyboard focus on a folder row */
#mailboxlist li a:focus-visible,
.folderlist li a:focus-visible,
.treelist li a:focus-visible {
  outline: none;
  box-shadow: var(--nebula-ring);
}

/* Unread count badges — compact, refined */
.folderlist .unreadcount,
.treelist .unreadcount,
#mailboxlist .unreadcount,
.folderlist .count {
  background: var(--nebula-accent-soft);
  color: var(--nebula-accent);
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.72em;
  min-width: 18px;
  padding: 0 6px;
  line-height: 1.5;
}

/* ---- Message list rows ---- */
.messagelist tr {
  transition: background var(--nebula-dur) var(--nebula-ease);
}
.messagelist tr td { border-bottom: 1px solid var(--nebula-separator); }
.messagelist tbody tr:hover td { background: var(--nebula-accent-soft); }
.messagelist tr.selected td { background: var(--nebula-selection) !important; }
.messagelist tr.selected:hover td { background: var(--nebula-selection-strong) !important; }
.messagelist tr.focused td,
.messagelist tr.selected.focused td { box-shadow: inset 3px 0 0 var(--nebula-accent); }

/* keyboard focus indicator on a row */
.messagelist tr.focused td { outline: none; }

/* Unread: distinguishable without heavy bold */
.messagelist tr.unread td.subject .subject { font-weight: 600; color: var(--nebula-text); }
.messagelist tr.unread td.subject .fromname,
.messagelist tr.unread td.subject span.fromto { font-weight: 600; }
.messagelist tr.unread span.msgicon.status:before {
  color: var(--nebula-accent);
}
/* normal (read) rows calmer */
.messagelist td.subject .subject { color: var(--nebula-text); font-weight: 500; }
.messagelist td.subject .fromname,
.messagelist td.subject span.fromto { color: var(--nebula-text-secondary); font-weight: 500; }
.messagelist td.subject span.date { color: var(--nebula-text-tertiary); }

/* Flagged gets a restrained accent, not a loud red wash */
.messagelist tr.flagged td.subject span.flag:before { color: #ff9f0a; }

/* Attachment indicator stays visible (never hide) */
.messagelist span.attachment span,
.messagelist span.attachment:before { color: var(--nebula-text-tertiary); }

/* ---- Reading pane: clean document surface ---- */
#layout-content .header { border-bottom: 1px solid var(--nebula-separator); }
#messagecontframe,
#mailcontframe,
#layout-content .iframe {
  background: var(--nebula-surface-solid);
  border: 0;
}
/* Message body typography wrapper (text parts) */
.messagepart,
.message-parsetree,
#messagebody {
  color: var(--nebula-text);
  line-height: 1.65;
}
.messagepart .message-htmlpart { background: #fff; }
.dark-mode .messagepart .message-htmlpart { background: #fff; } /* keep HTML email light/readable, do NOT recolor */
/* Attachment presentation */
.attachmentslist,
.attachmentlist {
  border-top: 1px solid var(--nebula-separator);
}
.attachmentslist li {
  background: var(--nebula-surface-raised);
  border: 1px solid var(--nebula-separator);
  border-radius: var(--nebula-radius-small);
  box-shadow: var(--nebula-shadow-sm);
  transition: border-color var(--nebula-dur) var(--nebula-ease);
}
.attachmentslist li:hover { border-color: var(--nebula-separator-strong); }

/* Empty states */
#messagelist-content:empty:before,
#layout-content .empty { color: var(--nebula-text-tertiary); }
.listing.message .empty,
.scroller .empty {
  color: var(--nebula-text-tertiary);
  font-size: 0.95em;
}

/* ---- Buttons & form controls ---- */
.btn {
  border-radius: var(--nebula-radius-small);
  font-family: var(--nebula-font);
  font-weight: 500;
  transition: background var(--nebula-dur) var(--nebula-ease),
              border-color var(--nebula-dur) var(--nebula-ease),
              color var(--nebula-dur) var(--nebula-ease),
              transform var(--nebula-dur) var(--nebula-ease);
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--nebula-accent);
  border-color: var(--nebula-accent);
  color: #fff;
  box-shadow: var(--nebula-shadow-sm);
}
.btn-primary:hover {
  background: var(--nebula-accent-hover);
  border-color: var(--nebula-accent-hover);
  color: #fff;
}
.btn-primary:active { background: var(--nebula-accent-press); }
.btn-secondary {
  background: var(--nebula-surface-raised);
  border-color: var(--nebula-separator-strong);
  color: var(--nebula-text);
}
.btn-secondary:hover { background: var(--nebula-accent-soft); color: var(--nebula-accent); border-color: var(--nebula-accent); }

.form-control, input[type=text], input[type=search], input[type=email],
input[type=password], input[type=number], select, textarea {
  border-radius: var(--nebula-radius-small);
  border-color: var(--nebula-separator-strong);
  background: var(--nebula-surface-solid);
  color: var(--nebula-text);
  font-family: var(--nebula-font);
  transition: border-color var(--nebula-dur) var(--nebula-ease),
              box-shadow var(--nebula-dur) var(--nebula-ease);
}
.form-control:focus, input:focus, select:focus, textarea:focus {
  border-color: var(--nebula-accent);
  box-shadow: var(--nebula-ring);
  outline: none;
}
input[type=checkbox], input[type=radio] { accent-color: var(--nebula-accent); }
.custom-select { border-radius: var(--nebula-radius-small); }

/* ---- Compose: floating document/editor ---- */
#composeview,
#layout-content.compose {
  background: var(--nebula-surface-solid);
  border-radius: var(--nebula-radius-large);
  box-shadow: var(--nebula-shadow);
}
.compose-headers {
  border-bottom: 1px solid var(--nebula-separator);
}
.compose-headers .form-group.row,
.compose-headers .input-group {
  border-bottom: 1px solid var(--nebula-separator);
}
/* recipient chips */
.recipient {
  background: var(--nebula-accent-soft);
  color: var(--nebula-text);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 1px 10px;
  font-weight: 500;
  transition: background var(--nebula-dur) var(--nebula-ease), border-color var(--nebula-dur) var(--nebula-ease);
}
.recipient:hover { background: var(--nebula-selection); border-color: var(--nebula-separator-strong); }
.recipient .delete { opacity: 0.6; }
.recipient .delete:hover { opacity: 1; color: var(--nebula-accent); }
/* recipient input area */
._recipients, #compose-recipients, .recipient-area {
  background: var(--nebula-surface-solid);
}
.to-field .add, .input-group-text.icon.add {
  border-radius: var(--nebula-radius-small);
  color: var(--nebula-accent);
}
/* editor surface */
.composebody, #composebody, .editorarea, .tox-tinymce {
  border-radius: var(--nebula-radius-small);
  background: var(--nebula-surface-solid);
  color: var(--nebula-text);
}
.formbuttons { border-top: 1px solid var(--nebula-separator); }
.btn.btn-primary.send {
  border-radius: var(--nebula-radius-small);
  padding: 0.5rem 1.1rem;
  font-weight: 600;
}

/* ---- Dialogs / menus / popovers ---- */
.ui-dialog, .propform.formcontainer, .popupmenu, .menu {
  border-radius: var(--nebula-radius-large);
  box-shadow: var(--nebula-shadow);
  border: 1px solid var(--nebula-separator);
}
.ui-dialog .ui-dialog-titlebar,
.popup .header,
.menu .header {
  border-bottom: 1px solid var(--nebula-separator);
  background: var(--nebula-overlay);
}
.ui-dialog .ui-dialog-content { background: var(--nebula-surface-solid); }
.propform { background: var(--nebula-surface-solid); }
.formcontent { background: var(--nebula-surface-solid); }
.form-group.row,
.propform .form-group {
  border-bottom: 1px solid var(--nebula-separator);
}
/* menu items */
.menu a, .menu .button, .popupmenu a {
  border-radius: var(--nebula-radius-small);
  transition: background var(--nebula-dur) var(--nebula-ease), color var(--nebula-dur) var(--nebula-ease);
}
.menu a:hover, .popupmenu a:hover, .menu .button:hover {
  background: var(--nebula-accent-soft);
  color: var(--nebula-accent);
}

/* ---- Settings & contacts: grouped cards ---- */
.settingsselector, #layout-list .selection-table { border-bottom: 1px solid var(--nebula-separator); }
.propform .formcontent,
.formcontainer .formcontent {
  padding: 8px;
}
#settings-sections .formgroup,
.propform .row.form-group {
  background: var(--nebula-surface-raised);
  border: 1px solid var(--nebula-separator);
  border-radius: var(--nebula-radius-medium);
  margin: 6px 0;
  box-shadow: var(--nebula-shadow-sm);
}
/* tabs */
.tabs, .tabbar {
  border-bottom: 1px solid var(--nebula-separator);
}
.tabs a, .tabbar a {
  border-radius: var(--nebula-radius-small) var(--nebula-radius-small) 0 0;
  color: var(--nebula-text-secondary);
  transition: background var(--nebula-dur) var(--nebula-ease), color var(--nebula-dur) var(--nebula-ease);
}
.tabs a:hover, .tabbar a:hover { color: var(--nebula-accent); background: var(--nebula-accent-soft); }
.tabs a.selected, .tabbar a.selected { color: var(--nebula-accent); border-bottom: 2px solid var(--nebula-accent); }

/* ---- Login page ---- */
#layout-content.no-navbar {
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
#logo { width: 64px; height: 64px; margin-bottom: 18px; filter: drop-shadow(0 4px 14px rgba(10,132,255,0.18)); }
#login-form {
  background: var(--nebula-surface);
  -webkit-backdrop-filter: saturate(150%) blur(16px);
  backdrop-filter: saturate(150%) blur(16px);
  border: 1px solid var(--nebula-separator);
  border-radius: var(--nebula-radius-large);
  box-shadow: var(--nebula-shadow);
  padding: 28px 26px 20px;
  max-width: 380px;
  width: 100%;
}
#login-footer { color: var(--nebula-text-tertiary); }

/* ---- Avatar account control (injected by nebula.js) ---- */
.nebula-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  box-shadow: var(--nebula-shadow-sm);
  cursor: pointer;
  flex: 0 0 auto;
  transition: transform var(--nebula-dur) var(--nebula-ease),
              box-shadow var(--nebula-dur) var(--nebula-ease);
  user-select: none;
}
.nebula-avatar:hover { transform: scale(1.05); }
.nebula-avatar:focus-visible { outline: none; box-shadow: var(--nebula-ring); }
.nebula-avatar[aria-expanded="true"] { box-shadow: var(--nebula-ring); }

.nebula-account-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  background: var(--nebula-surface-solid);
  border: 1px solid var(--nebula-separator);
  border-radius: var(--nebula-radius-medium);
  box-shadow: var(--nebula-shadow);
  padding: 6px;
  z-index: 100000;
  opacity: 0;
  transform: translateY(-4px) scale(0.98);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity var(--nebula-dur) var(--nebula-ease), transform var(--nebula-dur) var(--nebula-ease);
}
.nebula-account-menu.open { opacity: 1; transform: none; pointer-events: auto; }
.nebula-account-menu .nebula-menu-header {
  padding: 8px 10px;
  border-bottom: 1px solid var(--nebula-separator);
  margin-bottom: 4px;
}
.nebula-account-menu .nebula-menu-name { font-weight: 600; color: var(--nebula-text); font-size: 0.92em; }
.nebula-account-menu .nebula-menu-sub { color: var(--nebula-text-tertiary); font-size: 0.78em; margin-top: 2px; }
.nebula-account-menu button {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 8px;
  border: 0;
  background: transparent;
  color: var(--nebula-text);
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--nebula-radius-small);
  font-family: var(--nebula-font);
  font-size: 0.9em;
  cursor: pointer;
  transition: background var(--nebula-dur) var(--nebula-ease), color var(--nebula-dur) var(--nebula-ease);
}
.nebula-account-menu button:hover { background: var(--nebula-accent-soft); color: var(--nebula-accent); }
.nebula-account-menu button:focus-visible { outline: none; box-shadow: var(--nebula-ring); }
.nebula-account-menu hr { border: 0; border-top: 1px solid var(--nebula-separator); margin: 4px 0; }

/* wrap the avatar so the absolutely-positioned menu anchors to it */
.nebula-account-wrap { position: relative; display: inline-flex; }

/* ---- Scrollbars: thin, unobtrusive ---- */
.scroller, .formcontent, .menu, .ui-dialog-content {
  scrollbar-width: thin;
  scrollbar-color: var(--nebula-separator-strong) transparent;
}
.scroller::-webkit-scrollbar { width: 10px; height: 10px; }
.scroller::-webkit-scrollbar-thumb {
  background: var(--nebula-separator-strong);
  border-radius: 999px;
  border: 3px solid transparent;
  background-clip: padding-box;
}
.scroller::-webkit-scrollbar-thumb:hover { background: var(--nebula-text-tertiary); background-clip: padding-box; }

/* ---- Focus visibility everywhere ---- */
a:focus-visible, button:focus-visible, .button:focus-visible, .btn:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--nebula-accent);
  outline-offset: 1px;
  border-radius: var(--nebula-radius-small);
}

/* ---- Motion preferences ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
  .nebula-avatar:hover, .btn:active, .button:active { transform: none !important; }
}

/* ---- Responsive refinements (Elastic already drives pane switching) ---- */
@media (max-width: 1200px) {
  #layout-sidebar { background: var(--nebula-sidebar); }
}
@media (max-width: 768px) {
  #layout .header { min-height: 48px; }
  #login-form { max-width: 92vw; }
  /* keep touch targets comfortable */
  #layout .toolbar .button, #layout .header .button.icon { min-width: 44px; min-height: 44px; }
  .menu a, .popupmenu a, .nebula-account-menu button { min-height: 44px; }
  .nebula-avatar { width: 38px; height: 38px; }
}
@media (max-width: 480px) {
  .searchbar form { margin: 6px; }
}

/* ---- Print: defer to Elastic's print stylesheet; neutralize translucency ---- */
@media print {
  #layout-sidebar, #layout-list, #layout .header, .searchbar { display: none !important; }
  body, #layout, #layout-content { background: #fff !important; }
  #layout-content { box-shadow: none !important; }
}

/* Prevent horizontal scroll from translucency/blur overflow */
html, body { overflow-x: hidden; }
#layout { overflow: hidden; }