/* =============================================================================
   Labirynt Mail — UI stylesheet
   Design system: Flat Design (ui-ux-pro-max) — tokens, responsive 1/2/3-pane,
   feedback (toast/skeleton/spinner), a11y (focus ring, reduced-motion, 44px touch).
   ============================================================================= */

/* ---------- Tokens ---------- */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #eff6ff;
  --on-primary: #ffffff;

  --bg: #f3f4f6;
  --card: #ffffff;
  --border: #e4ecfc;
  --border-strong: #c7d6f5;
  --fg: #0f172a;
  --muted: #f1f5fd;
  --muted-fg: #475569;
  --faint-fg: #64748b;

  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --on-danger: #ffffff;
  --success: #15803d;
  --success-soft: #f0fdf4;
  --warning-fg: #b45309;

  --ring: #2563eb;
  --star: #d97706;
  --unread-bg: #eff6ff;

  --radius: 10px;
  --radius-sm: 8px;
  --shadow-1: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-2: 0 8px 24px rgba(15, 23, 42, .12);

  --fs-1: 13px;
  --fs-2: 14px;
  --fs-3: 16px;
  --fs-4: 18px;

  --t-fast: 150ms ease;
  --t-med: 200ms ease;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-soft: #172554;
    --bg: #0b1220;
    --card: #111a2e;
    --border: #1e293b;
    --border-strong: #334155;
    --fg: #e2e8f0;
    --muted: #16213a;
    --muted-fg: #94a3b8;
    --faint-fg: #7c8aa5;
    --danger: #f87171;
    --danger-soft: #2a1215;
    --success: #4ade80;
    --success-soft: #0f2417;
    --star: #f59e0b;
    --unread-bg: #14274d;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-2: 0 8px 24px rgba(0, 0, 0, .5);
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-2);
  line-height: 1.5;
  background: var(--bg);
  color: var(--fg);
}

button, input, textarea, select { font: inherit; color: inherit; }

img, svg { vertical-align: middle; }

.icon {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-sm { width: 15px; height: 15px; }
.icon-lg { width: 44px; height: 44px; stroke-width: 1.4; }

/* Fokus terlihat di SEMUA kontrol (termasuk di dalam modal) — UX rule High. */
:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: var(--primary); color: var(--on-primary); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ---------- Tombol ---------- */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 8px 16px;
  background: var(--primary);
  color: var(--on-primary);
  border: 0;
  border-radius: var(--radius-sm);
  font-size: var(--fs-2);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), opacity var(--t-fast);
}

button:hover:not(:disabled) { background: var(--primary-hover); }
button:disabled { opacity: .55; cursor: not-allowed; }

button.ghost {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border-strong);
}
button.ghost:hover:not(:disabled) { background: var(--muted); }

button.danger { background: var(--danger); color: var(--on-danger); }
button.danger:hover:not(:disabled) { background: #b91c1c; }

button.icon-btn {
  min-width: 40px;
  min-height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
}

/* Status loading: spinner inline menggantikan isi saat .is-loading */
button .spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
button.is-loading { pointer-events: none; opacity: .75; }
button.is-loading .spinner { display: inline-block; }
button.is-loading .btn-label { opacity: .7; }

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

/* ---------- Form ---------- */
label { display: block; font-size: var(--fs-1); font-weight: 600; margin: 12px 0 6px; }

input, textarea, select {
  width: 100%;
  padding: 10px 12px;
  min-height: 40px;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: var(--fs-2);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 22%, transparent);
}

input[type="search"] { padding-left: 34px; }

textarea { min-height: 96px; resize: vertical; }

.field-error {
  color: var(--danger);
  font-size: var(--fs-1);
  margin-top: 4px;
}

/* ---------- Alert / Toast ---------- */
.toast-region {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: min(380px, calc(100vw - 32px));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-2);
  font-size: var(--fs-1);
  animation: toast-in var(--t-med) ease;
}

.toast.out { opacity: 0; transform: translateY(6px); transition: opacity var(--t-med), transform var(--t-med); }
.toast .icon { margin-top: 1px; }
.toast-success .icon { color: var(--success); }
.toast-error .icon { color: var(--danger); }
.toast-info .icon { color: var(--primary); }
.toast .toast-msg { flex: 1; }
.toast .toast-close {
  background: none;
  border: 0;
  min-height: 24px;
  min-width: 24px;
  padding: 2px;
  color: var(--faint-fg);
  cursor: pointer;
}
.toast .toast-close:hover { color: var(--fg); background: transparent; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Alert inline ---------- */
.alert-err, .alert-ok {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-1);
  margin-bottom: 8px;
}
.alert-err { background: var(--danger-soft); color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent); }
.alert-ok { background: var(--success-soft); color: var(--success); border: 1px solid color-mix(in srgb, var(--success) 30%, transparent); }
.alert-err .icon, .alert-ok .icon { margin-top: 1px; }

/* ---------- Skeleton loading ---------- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--muted);
  border-radius: 6px;
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--card) 65%, transparent), transparent);
  animation: shimmer 1.2s infinite;
}
@keyframes shimmer { to { transform: translateX(100%); } }

.skel-row { padding: 14px; border-bottom: 1px solid var(--border); }
.skel-row .skeleton { height: 12px; margin-bottom: 8px; }
.skel-row .skeleton.w60 { width: 60%; }
.skel-row .skeleton.w40 { width: 40%; margin-bottom: 0; }

/* ---------- Empty state ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 48px 24px;
  text-align: center;
  color: var(--faint-fg);
}
.empty-state .icon { color: var(--border-strong); }
.empty-state .empty-title { font-weight: 600; color: var(--muted-fg); }
.empty-state button { margin-top: 6px; }
/* ---------- App shell: 1-pane mobile → 2-pane tablet → 3-pane desktop ---------- */
.mail-shell {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 56px 1fr;
  height: 100vh;
  height: 100dvh;
}

.mail-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 12px;
  z-index: 20;
}

.mail-header .brand {
  font-weight: 700;
  font-size: var(--fs-3);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.mail-header .brand .icon { color: var(--primary); }

.mail-header .search { flex: 1; max-width: 460px; min-width: 0; }
.mail-header .search-wrap { position: relative; flex: 1; max-width: 460px; min-width: 0; }
.mail-header .search-wrap .icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faint-fg);
  pointer-events: none;
}
.mail-header .spacer { flex: 1; }
.mail-header .user { color: var(--muted-fg); font-size: var(--fs-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 26vw; }

#btn-menu { display: inline-flex; }

.mail-sidebar {
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: 12px 8px;
  overflow-y: auto;
  display: none;
}

.mail-sidebar a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  color: var(--fg);
  text-decoration: none;
  margin-bottom: 2px;
  transition: background var(--t-fast);
}
.mail-sidebar a .nav-label { display: inline-flex; align-items: center; gap: 10px; }
.mail-sidebar a.active, .mail-sidebar a:hover { background: var(--unread-bg); }
.mail-sidebar a.active .icon { color: var(--primary); }
.mail-sidebar .count {
  color: var(--muted-fg);
  font-size: 12px;
  background: var(--muted);
  border-radius: 999px;
  padding: 1px 8px;
  min-width: 24px;
  text-align: center;
}
.mail-sidebar .count.unread { background: var(--primary); color: var(--on-primary); }

.mail-list {
  border-right: 1px solid var(--border);
  overflow-y: auto;
  background: var(--card);
  display: flex;
  flex-direction: column;
}

.list-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--card);
  z-index: 5;
}
.list-toolbar .folder-name { font-weight: 700; font-size: var(--fs-2); flex: 1; }
.list-toolbar .page-info { color: var(--muted-fg); font-size: var(--fs-1); }
.list-toolbar button { min-height: 36px; padding: 6px 10px; }
.list-toolbar button:disabled { opacity: .4; }

.mail-item {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--t-fast);
}
.mail-item:hover { background: var(--muted); }
.mail-item.active { background: var(--unread-bg); }
.mail-item.unread { background: var(--unread-bg); }
.mail-item.unread .subject { font-weight: 700; }
.mail-item.unread .unread-dot { display: inline-block; }
.unread-dot {
  display: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex: none;
}
.mail-item .row1 { display: flex; gap: 8px; align-items: center; }
.mail-item .row1 .icon-btn {
  min-width: 32px;
  min-height: 32px;
  padding: 4px;
  color: var(--faint-fg);
}
.mail-item .row1 .icon-btn.starred { color: var(--star); }
.mail-item .row1 .icon-btn.starred .icon { fill: var(--star); }
.mail-item .row1 .icon-btn:hover { color: var(--star); background: transparent; }
.mail-item .from {
  font-weight: 600;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mail-item .date { color: var(--faint-fg); font-size: 12px; white-space: nowrap; }
.mail-item .subject { font-size: var(--fs-1); margin-top: 2px; }
.mail-item .preview {
  color: var(--muted-fg);
  font-size: var(--fs-1);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mail-item .flags { display: inline-flex; gap: 4px; color: var(--star); }

.mail-thread-label {
  padding: 6px 14px;
  background: var(--muted);
  color: var(--muted-fg);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ---------- Reader ---------- */
.mail-reader {
  overflow-y: auto;
  padding: 20px 24px;
  background: var(--bg);
  display: none;
}

.mail-reader.visible { display: block; }
.mail-list.visible-on-mobile { display: flex; }

.mail-reader .subj { font-size: var(--fs-4); font-weight: 700; margin: 0 0 8px; }
.mail-reader .meta { color: var(--muted-fg); font-size: var(--fs-1); margin-bottom: 12px; }
.mail-reader .meta b { color: var(--fg); }
.mail-reader .meta .icon { width: 14px; height: 14px; }

.reader-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.reader-actions button { padding: 7px 12px; min-height: 38px; font-size: var(--fs-1); }

iframe.mail-frame {
  width: 100%;
  min-height: 420px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.att-list { margin: 14px 0; display: flex; flex-direction: column; gap: 6px; }
.att-item {
  display: flex;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  background: var(--card);
  font-size: var(--fs-1);
}
.att-item .icon { color: var(--primary); }
.att-item a { color: var(--primary); text-decoration: none; font-weight: 600; }
.att-item a:hover { text-decoration: underline; }
.att-item .att-size { color: var(--faint-fg); }

.reader-loading { display: flex; flex-direction: column; gap: 10px; }
.reader-loading .skeleton { height: 14px; }
.reader-loading .skeleton.w70 { width: 70%; }
.reader-loading .skeleton.w45 { width: 45%; }
.reader-loading .skeleton.block { height: 240px; margin-top: 12px; }

#btn-back { display: none; }

/* ---------- Compose ---------- */
.compose-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .45);
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  z-index: 100;
}

.compose-mask[hidden] { display: none; }

.compose {
  background: var(--card);
  width: min(640px, 100vw);
  height: min(88vh, 88dvh);
  border-radius: 14px 14px 0 0;
  box-shadow: var(--shadow-2);
  display: flex;
  flex-direction: column;
  padding: 16px;
}

@media (min-width: 640px) {
  .compose-mask { align-items: flex-end; padding: 0 24px 0 0; }
  .compose { border-radius: 14px 0 0 0; }
}

.compose h2 { margin: 0 0 12px; font-size: var(--fs-3); display: flex; align-items: center; justify-content: space-between; }
.compose .fields { display: flex; flex-direction: column; gap: 8px; flex: 1; overflow-y: auto; padding-right: 4px; }
.compose textarea { min-height: 200px; }
.compose .actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.compose .hint { color: var(--faint-fg); font-size: 12px; }
.compose-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--muted);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
}

/* ---------- Sidebar drawer (mobile/tablet) ---------- */
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .45);
  z-index: 90;
}
.backdrop[hidden] { display: none; }

/* ---------- Admin ---------- */
.admin-wrap { max-width: 920px; margin: 24px auto; padding: 0 16px 48px; }
.admin-wrap h1 { font-size: var(--fs-4); display: flex; align-items: center; gap: 10px; }
.admin-wrap table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.admin-wrap th, .admin-wrap td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; font-size: var(--fs-1); }
.admin-wrap th { background: var(--muted); color: var(--muted-fg); font-weight: 600; }
.admin-wrap .kpi { display: flex; gap: 12px; margin: 16px 0; flex-wrap: wrap; }
.admin-wrap .kpi .box {
  flex: 1;
  min-width: 140px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow-1);
}
.admin-wrap .kpi .box b { font-size: 22px; display: block; }
.admin-wrap .kpi .box span { color: var(--muted-fg); font-size: var(--fs-1); }
.admin-wrap .status-ok { color: var(--success); }
.admin-wrap .status-bad { color: var(--danger); }

/* ---------- Login ---------- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 16px;
}

.card {
  background: var(--card);
  border-radius: 14px;
  box-shadow: var(--shadow-2);
  border: 1px solid var(--border);
  padding: 40px;
  width: min(400px, 100%);
}
.card h1 { font-size: 20px; margin: 0 0 6px; display: flex; align-items: center; gap: 10px; }
.card h1 .icon { color: var(--primary); width: 24px; height: 24px; }
.card .sub { color: var(--muted-fg); font-size: var(--fs-1); margin-bottom: 24px; }
.card button { width: 100%; margin-top: 20px; }
footer.muted.login-foot { margin-top: 18px; }

/* ---------- Breakpoints ---------- */
/* Tablet ≥640px: sidebar masih drawer, list+reader berdampingan */
@media (min-width: 640px) {
  .mail-shell { grid-template-columns: minmax(0, 42%) 1fr; }
  .mail-reader { display: block; }
  #btn-back { display: none; }
}

/* Desktop ≥1024px: 3 pane penuh */
@media (min-width: 1024px) {
  .mail-shell { grid-template-columns: 232px minmax(320px, 380px) 1fr; }
  .mail-sidebar { display: block; }
  #btn-menu { display: none; }
  .toast-region { right: 20px; bottom: 20px; }
}

/* Mobile <640px: satu pane, reader menggantikan list saat dibuka */
@media (max-width: 639.98px) {
  .mail-reader { padding: 16px; }
  .mail-shell.show-reader .mail-list { display: none; }
  .mail-shell.show-reader .mail-reader { display: block; }
  .mail-shell.show-reader #btn-back { display: inline-flex; }
  .mail-header .user { display: none; }
  .mail-header .search-wrap { display: none; }
}