:root {
  --primary: #275948;
  --primary-dark: #183e33;
  --primary-light: #3a7d66;
  --accent: #c8844d;
  --accent-soft: #efd0b1;
  --sage: #89a08f;
  --bg: #f4efe5;
  --bg-soft: #fbf8f1;
  --bg-card: #ffffff;
  --bg-sidebar: #eee8dc;
  --text: #14251f;
  --text-soft: #56655d;
  --text-on-primary: #f4efe5;
  --border: #d4cdc0;
  --border-light: #e8e2d6;
  --success: #2d8659;
  --danger: #c0392b;
  --warning: #d4a020;
  --unread: #275948;
  --font-heading: "Fraunces", Georgia, serif;
  --font-body: "Space Grotesk", "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, monospace;
  --logo-url: none;
  --logo-width: 32px;
  --logo-height: 32px;
  --brand-name: "Unified Webmail";
  --brand-name-font: var(--font-heading);
  --brand-name-weight: 700;
  --brand-name-tracking: 0;
  --btn-primary-bg: linear-gradient(135deg, #1f4035, #2c644f);
  --btn-primary-text: #f4efe5;
  --btn-hover-lift: -2px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 1px 3px rgba(20, 37, 31, 0.08);
  --shadow-dropdown: 0 4px 12px rgba(20, 37, 31, 0.12);
  --topbar-blur: blur(12px);
}

* {
  box-sizing: border-box;
}

[x-cloak] {
  display: none !important;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent-soft) 45%, transparent), transparent 36%),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  color: var(--text);
  font-family: var(--font-body);
}

body {
  min-height: 100vh;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  padding: 0.82rem 0.9rem;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

input:focus,
textarea:focus,
.compose-editor:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-light) 18%, transparent);
}

a {
  color: var(--primary);
}

svg {
  width: 1rem;
  height: 1rem;
  fill: currentColor;
}

kbd {
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 0.2rem 0.45rem;
  background: var(--bg-soft);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.webmail-app {
  min-height: 100vh;
}

.startup-state,
.empty-state {
  display: grid;
  place-items: center;
  gap: 1rem;
  min-height: 100vh;
  text-align: center;
  padding: 2rem;
}

.spinner {
  width: 2.6rem;
  height: 2.6rem;
  border: 3px solid color-mix(in srgb, var(--border) 55%, transparent);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.login-screen {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.login-background {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 95%, color-mix(in srgb, var(--border) 65%, transparent) 95%),
    linear-gradient(90deg, transparent 95%, color-mix(in srgb, var(--border) 65%, transparent) 95%);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent);
  opacity: 0.28;
  pointer-events: none;
}

.login-card,
.modal-card,
.reader-card,
.sidebar-card {
  background: color-mix(in srgb, var(--bg-card) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 90%, transparent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.login-card {
  position: relative;
  width: min(100%, 560px);
  padding: 1.65rem;
  backdrop-filter: var(--topbar-blur);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.brand-logo {
  width: var(--logo-width);
  height: var(--logo-height);
  object-fit: contain;
  flex-shrink: 0;
}

.brand-logo-small {
  width: 1.75rem;
  height: 1.75rem;
}

.brand-text-logo {
  font-family: var(--brand-name-font);
  font-weight: var(--brand-name-weight);
  letter-spacing: var(--brand-name-tracking);
  color: var(--primary);
  font-size: 1.1rem;
}

.brand-inline,
.topbar-start {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-inline strong {
  display: block;
  font-family: var(--font-heading);
}

.brand-inline span {
  display: block;
  color: var(--text-soft);
  font-size: 0.85rem;
}

.eyebrow {
  margin: 0 0 0.2rem;
  color: var(--primary-light);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.subtle-copy,
.help-copy {
  color: var(--text-soft);
  line-height: 1.55;
}

.login-form,
.compose-fields,
.settings-grid {
  display: grid;
  gap: 1rem;
}

.login-form label,
.compose-fields label,
.settings-grid label,
.settings-password label {
  display: grid;
  gap: 0.42rem;
}

.btn,
.chip,
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.btn {
  padding: 0.8rem 1rem;
  font-weight: 600;
}

.btn:hover,
.chip:hover,
.icon-btn:hover {
  transform: translateY(var(--btn-hover-lift));
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: var(--shadow-dropdown);
}

.btn-ghost,
.chip,
.icon-btn {
  background: color-mix(in srgb, var(--bg-card) 92%, transparent);
  color: var(--text);
  border-color: var(--border);
}

.btn-block {
  width: 100%;
}

.chip {
  padding: 0.48rem 0.72rem;
  font-size: 0.92rem;
}

.chip.danger {
  color: var(--danger);
}

.icon-btn {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
}

.icon-btn.tiny {
  width: 1.7rem;
  height: 1.7rem;
}

.notice,
.floating-notice {
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  border: 1px solid color-mix(in srgb, var(--primary-light) 35%, transparent);
  background: color-mix(in srgb, var(--accent-soft) 26%, var(--bg-card));
}

.notice-error {
  border-color: color-mix(in srgb, var(--danger) 45%, transparent);
  background: color-mix(in srgb, var(--danger) 10%, var(--bg-card));
}

.floating-notice {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 40;
  box-shadow: var(--shadow-dropdown);
}

.workspace-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(240px, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 0.95rem 1.2rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  backdrop-filter: var(--topbar-blur);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
}

.searchbar {
  position: relative;
}

.searchbar input {
  padding-left: 2.5rem;
  background: color-mix(in srgb, var(--bg-card) 85%, transparent);
}

.search-icon {
  position: absolute;
  top: 50%;
  left: 0.85rem;
  transform: translateY(-50%);
  color: var(--text-soft);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.workspace-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 0;
}

.sidebar {
  padding: 1rem;
  background: color-mix(in srgb, var(--bg-sidebar) 92%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
}

.folder-nav {
  display: grid;
  gap: 0.35rem;
}

.folder-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.82rem 0.9rem;
  background: transparent;
  color: inherit;
  border: 1px solid transparent;
  border-radius: var(--radius);
}

.folder-link.active {
  background: color-mix(in srgb, var(--primary) 12%, var(--bg-card));
  border-color: color-mix(in srgb, var(--primary-light) 32%, transparent);
}

.folder-name {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.folder-count {
  min-width: 1.55rem;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  background: var(--primary);
  color: var(--text-on-primary);
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.sidebar-card {
  margin-top: 1rem;
  padding: 0.95rem;
}

.sidebar-card p,
.reader-meta,
.meta-line,
.shortcut-row span {
  color: var(--text-soft);
}

.content-shell {
  display: grid;
  grid-template-columns: 420px 1fr;
  min-height: 0;
}

.message-list-panel,
.reader-panel {
  min-height: 0;
}

.message-list-panel {
  border-right: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  display: grid;
  grid-template-rows: auto 1fr;
}

.panel-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  background: color-mix(in srgb, var(--bg-card) 72%, transparent);
}

.toolbar-group,
.toolbar-meta,
.reader-actions,
.attachment-list,
.modal-footer,
.footer-actions,
.shortcut-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.toolbar-group {
  flex-wrap: wrap;
}

.toolbar-meta {
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ── Spark-style message list ── */
.message-list {
  overflow: auto;
}

.msg-row {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border-light) 85%, transparent);
  cursor: pointer;
  transition: background 0.12s ease;
}

.msg-row:hover {
  background: color-mix(in srgb, var(--primary) 5%, var(--bg-card));
}

.msg-row.active {
  background: color-mix(in srgb, var(--primary) 9%, var(--bg-card));
}

.msg-row.selected {
  background: color-mix(in srgb, var(--primary) 7%, var(--bg-card));
}

.msg-row.unread .msg-sender {
  font-weight: 700;
  color: var(--text);
}

.msg-row.unread .msg-subject {
  font-weight: 600;
  color: var(--text);
}

/* Left: checkbox + avatar */
.msg-left {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0 0.6rem 0.7rem;
  flex-shrink: 0;
  cursor: default;
}

.msg-check {
  display: inline-flex;
  align-items: center;
}

.msg-check input {
  width: auto;
  margin: 0;
  cursor: pointer;
}

.msg-avatar {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* Right: 3-line body */
.msg-body {
  flex: 1;
  min-width: 0;
  padding: 0.55rem 0.75rem 0.55rem 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

/* Line 1: sender + time */
.msg-line1 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.msg-sender {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
}

/* Spark-style unread dot */
.msg-unread-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #1a8cff;
  flex-shrink: 0;
  display: inline-block;
  box-shadow: 0 0 6px 1px rgba(26, 140, 255, 0.45);
}

.msg-time {
  font-size: 0.74rem;
  color: var(--text-soft);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Line 2: subject + icons */
.msg-line2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.msg-subject {
  font-size: 0.84rem;
  color: var(--text-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.msg-icons {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.msg-att-icon {
  width: 0.8rem;
  height: 0.8rem;
  color: var(--text-soft);
}

.msg-star-icon {
  width: 0.85rem;
  height: 0.85rem;
  color: color-mix(in srgb, var(--text-soft) 45%, transparent);
  cursor: pointer;
  transition: color 0.12s ease;
}

.msg-star-icon:hover {
  color: var(--accent);
}

.msg-star-icon.starred {
  color: var(--accent);
}

/* Line 3: snippet */
.msg-line3 {
  display: flex;
  align-items: center;
}

.msg-snippet {
  font-size: 0.78rem;
  color: color-mix(in srgb, var(--text-soft) 72%, transparent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-panel {
  padding: 1rem;
  overflow: auto;
}

.reader-card {
  min-height: calc(100vh - 7rem);
  padding: 1.35rem;
}

.reader-header,
.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.reader-body {
  margin-top: 1.4rem;
  line-height: 1.68;
}

.reader-body pre,
.reader-body code {
  font-family: var(--font-mono);
}

.attachment-strip {
  margin-top: 1.5rem;
}

.attachment-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--border) 90%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-soft) 86%, var(--bg-card));
  color: inherit;
  text-decoration: none;
}

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  padding: 1.2rem;
  background: rgba(10, 14, 18, 0.45);
  backdrop-filter: blur(10px);
}

.modal-shell {
  place-items: center;
}

.compose-card,
.settings-card,
.shortcuts-card {
  width: min(100%, 980px);
  max-height: calc(100vh - 2.4rem);
  overflow: auto;
  padding: 1.2rem;
}

.shortcuts-card {
  width: min(100%, 460px);
}

.compose-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0.8rem;
}

.compose-editor {
  min-height: 260px;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: auto;
}

.attachment-dropzone {
  position: relative;
  display: grid;
  place-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 1.1rem;
  border: 1px dashed color-mix(in srgb, var(--primary-light) 42%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-soft) 86%, var(--bg-card));
  text-align: center;
}

.attachment-dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.settings-grid.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.read-only-card {
  padding: 0.95rem;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-soft) 92%, var(--bg-card));
  border: 1px solid color-mix(in srgb, var(--border-light) 90%, transparent);
}

.shortcut-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.shortcut-row {
  justify-content: space-between;
}

.checkbox-shell {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.checkbox-shell input {
  width: auto;
  margin: 0;
}

.mobile-nav,
.mobile-only {
  display: none;
}

.reader-empty {
  min-height: calc(100vh - 7rem);
}

.prose img {
  max-width: 100%;
  height: auto;
}

.prose blockquote {
  margin: 1rem 0;
  padding-left: 1rem;
  border-left: 3px solid color-mix(in srgb, var(--primary) 30%, transparent);
  color: var(--text-soft);
}

@media (max-width: 1080px) {
  .content-shell {
    grid-template-columns: 380px 1fr;
  }
}

@media (max-width: 767px) {
  .mobile-only,
  .mobile-nav {
    display: inline-flex;
  }

  .topbar {
    grid-template-columns: auto auto;
  }

  .searchbar {
    grid-column: 1 / -1;
  }

  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 4.8rem auto 4.8rem 0;
    width: min(88vw, 320px);
    transform: translateX(-110%);
    transition: transform 0.2s ease;
    z-index: 25;
    box-shadow: var(--shadow-dropdown);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .content-shell {
    grid-template-columns: 1fr;
  }

  .message-list-panel.hidden {
    display: none;
  }

  .reader-panel {
    display: none;
    padding: 0;
  }

  .reader-panel.open {
    display: block;
  }

  .reader-card {
    min-height: calc(100vh - 9rem);
    border-radius: 0;
    border: 0;
  }

  .modal-shell {
    padding: 0;
  }

  .compose-card,
  .settings-card {
    width: 100%;
    height: 100vh;
    max-height: none;
    border-radius: 0;
  }

  .settings-grid.two-up {
    grid-template-columns: 1fr;
  }

  .mobile-nav {
    position: sticky;
    bottom: 0;
    z-index: 15;
    justify-content: space-around;
    padding: 0.7rem 1rem;
    background: color-mix(in srgb, var(--bg-card) 92%, transparent);
    border-top: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
    backdrop-filter: var(--topbar-blur);
  }

  .mobile-nav button {
    border: 0;
    background: transparent;
    color: inherit;
  }
}

.theme-dark-mode {
  --bg: #0e1118;
  --bg-soft: #141925;
  --bg-card: #171d2b;
  --bg-sidebar: #121826;
  --text: #edf2ff;
  --text-soft: #a2abc2;
  --border: #2a3449;
  --border-light: #232d41;
  --shadow-card: 0 8px 30px rgba(3, 8, 20, 0.36);
  --shadow-dropdown: 0 16px 44px rgba(3, 8, 20, 0.45);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}