/* ================================================================
   Diário de Estudo · 学習日記 — tema escuro quente (sumi + washi)
   ================================================================ */

:root {
  color-scheme: dark;

  --bg: #1E1A15;
  --bg-deep: #17140F;
  --card: #29231C;
  --card-hi: #322B22;
  --input-bg: #211C16;
  --border: #3B3329;
  --border-soft: #332C23;

  --text: #EFE7D9;
  --text-2: #CBBEA6;
  --muted: #A3937B;
  --faint: #6E624F;

  --accent: #E4573F;
  --accent-strong: #C73E2E;
  --accent-soft: rgba(228, 87, 63, 0.13);
  --gold: #D9A84E;

  --serif: 'Zen Old Mincho', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
  --sans: 'Zen Kaku Gothic New', 'Yu Gothic', 'Meiryo', 'Hiragino Sans', sans-serif;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 2px 14px rgba(0, 0, 0, 0.28);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { height: 100%; }

body {
  min-height: 100%;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(1100px 500px at 50% -180px, rgba(228, 87, 63, 0.07), transparent 70%),
    radial-gradient(900px 600px at 100% 100%, rgba(217, 168, 78, 0.04), transparent 60%),
    var(--bg);
  background-attachment: fixed;
}

.hidden { display: none !important; }

::selection { background: rgba(228, 87, 63, 0.35); }

/* scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #3B3329; border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #4A4032; }

/* ---------- logo ---------- */
.logo {
  width: 46px; height: 46px; flex: none;
  background: linear-gradient(145deg, #D8452F, #A83422);
  color: #F6F1E7;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif);
  font-size: 24px; font-weight: 900;
  box-shadow: 0 4px 14px rgba(200, 62, 46, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.logo-big { width: 72px; height: 72px; font-size: 38px; border-radius: 18px; margin: 0 auto 6px; }

/* ---------- login ---------- */
.login-screen {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  background:
    radial-gradient(700px 400px at 50% 30%, rgba(228, 87, 63, 0.09), transparent 70%),
    var(--bg);
}
.login-card {
  width: 100%; max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 30px 30px;
  text-align: center;
  display: flex; flex-direction: column; gap: 12px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  animation: rise 0.45s ease both;
}
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.login-title { font-family: var(--serif); font-size: 24px; font-weight: 700; }
.login-sub { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.login-err { min-height: 18px; font-size: 13px; color: var(--accent); }

/* ---------- modal (configurações) ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 300;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  background: rgba(15, 12, 9, 0.72);
  backdrop-filter: blur(2px);
  animation: fade-in 0.18s ease both;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
  width: 100%; max-width: 440px;
  max-height: 85vh; overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px 26px 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: rise 0.3s ease both;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 18px;
}
.modal-tabs {
  display: flex; gap: 6px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 20px;
}
.modal-tab-btn {
  border: none; background: transparent; cursor: pointer;
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  color: var(--text-2);
  padding: 8px 4px 12px;
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.modal-tab-btn + .modal-tab-btn { margin-left: 14px; }
.modal-tab-btn:hover { color: var(--accent); }
.modal-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.settings-label { font-size: 15px; font-weight: 700; }
.settings-hint { font-size: 13px; color: var(--muted); margin-top: 4px; line-height: 1.5; }
.modal-actions {
  display: flex; justify-content: flex-end; gap: 10px;
  margin-top: 22px;
}
.confirm-message { font-size: 14px; color: var(--text-2); line-height: 1.5; }

/* ---------- header ---------- */
.app-header {
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(to bottom, rgba(41, 35, 28, 0.5), transparent);
}
.header-inner {
  max-width: 1060px; margin: 0 auto;
  padding: 22px 20px 0;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.brand { flex: 1; min-width: 200px; }
.brand h1 { font-family: var(--serif); font-size: 22px; font-weight: 700; line-height: 1.15; }
.brand-jp { color: var(--accent); }
.brand p { font-size: 13px; color: var(--muted); }
.streak { text-align: right; }
.streak-label { display: block; font-size: 12px; color: var(--muted); }
.streak strong {
  font-family: var(--serif); font-size: 21px; font-weight: 700; color: var(--gold);
  text-shadow: 0 0 18px rgba(217, 168, 78, 0.25);
}
.settings-btn {
  font-size: 19px;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text-2);
  align-self: center;
}
.settings-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(228, 87, 63, 0.08); }

/* ---------- nav ---------- */
.nav {
  max-width: 1060px; margin: 0 auto;
  padding: 16px 20px 14px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.nav-btn {
  border: 1px solid transparent;
  cursor: pointer;
  padding: 8px 16px;
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.nav-btn .jp-dim { font-size: 12px; opacity: 0.6; margin-left: 2px; }
.nav-btn:hover { color: var(--accent); background: rgba(228, 87, 63, 0.07); }
.nav-btn.active {
  background: var(--accent-soft);
  border-color: rgba(228, 87, 63, 0.4);
  color: var(--accent);
}

/* ---------- layout ---------- */
.view { max-width: 1060px; margin: 0 auto; padding: 26px 20px 40px; }
.app-footer {
  max-width: 1060px; margin: 0 auto;
  padding: 0 20px 34px;
  font-size: 12px; color: var(--faint); text-align: center;
}

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.sec-title { font-family: var(--serif); font-size: 20px; font-weight: 700; }
.sec-title .jp { color: var(--accent); }
.card-label {
  font-size: 12px; font-weight: 700; color: var(--muted);
  letter-spacing: 0.09em; text-transform: uppercase;
}
.jp-dim { opacity: 0.65; font-size: 0.85em; }

.empty {
  color: var(--muted); font-size: 14px;
  padding: 18px; border: 1px dashed var(--border);
  border-radius: var(--radius-sm); text-align: center;
}

/* ---------- botões ---------- */
.btn {
  font-family: var(--sans); font-size: 14px; font-weight: 700;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  padding: 10px 18px; cursor: pointer;
  color: var(--text);
  background: var(--card-hi);
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s, box-shadow 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(145deg, #E4573F, #C73E2E);
  color: #FFF6EA;
  box-shadow: 0 4px 16px rgba(199, 62, 46, 0.3);
}
.btn-primary:hover { background: linear-gradient(145deg, #EE6349, #D64834); box-shadow: 0 6px 20px rgba(199, 62, 46, 0.42); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text-2); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-dark { background: var(--bg-deep); border-color: var(--border); }
.btn-dark:hover { background: var(--accent-strong); border-color: transparent; color: #FFF6EA; }
.btn-block { width: 100%; }
.btn-pill { border-radius: 999px; padding: 12px 32px; font-size: 15px; }

.icon-btn {
  background: none; border: none; cursor: pointer;
  color: var(--faint); font-size: 16px; line-height: 1;
  padding: 4px 6px; border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
.icon-btn:hover { color: var(--accent); background: rgba(228, 87, 63, 0.1); }

/* ---------- formulários ---------- */
.field { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--muted); }
input, select, textarea {
  font-family: var(--sans); font-size: 14px;
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 9px 11px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input::placeholder, textarea::placeholder { color: var(--faint); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(228, 87, 63, 0.18);
}
textarea { resize: vertical; min-height: 110px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-full { grid-column: 1 / -1; }

.dur-box {
  padding: 9px 11px;
  border: 1px dashed var(--border);
  border-radius: 9px;
  font-size: 14px; font-weight: 700; color: var(--gold);
  min-height: 39px;
}
.form-err { margin-top: 10px; font-size: 13px; color: var(--accent); }

.segment-list { display: flex; flex-direction: column; gap: 8px; }
.segment-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.segment-row input[type="time"] { flex: 1; min-width: 110px; }
.segment-dash { color: var(--faint); font-weight: 700; }
.segment-footer {
  margin-top: 10px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap;
}
.segment-total { font-size: 14px; color: var(--text-2); }
.segment-total strong { color: var(--gold); }

/* ---------- cronômetro ---------- */
.timer-card { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.timer-num {
  font-family: var(--serif);
  font-size: 58px; font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--text);
  transition: color 0.3s;
}
.timer-num.running {
  color: var(--accent);
  text-shadow: 0 0 26px rgba(228, 87, 63, 0.4);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { text-shadow: 0 0 22px rgba(228, 87, 63, 0.3); }
  50% { text-shadow: 0 0 34px rgba(228, 87, 63, 0.55); }
}
.timer-hint { font-size: 13px; color: var(--muted); }
.timer-total {
  margin-top: 6px; padding-top: 14px;
  border-top: 1px dashed var(--border);
  width: 100%;
  display: flex; justify-content: space-between;
  font-size: 14px;
}
.timer-total span { color: var(--muted); }
.timer-total strong { color: var(--gold); }

/* ---------- sessões ---------- */
.session-list { display: flex; flex-direction: column; gap: 8px; }
.session-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: border-color 0.15s;
}
.session-row:hover { border-color: #4A4032; }
.session-main { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.session-time { font-weight: 700; font-variant-numeric: tabular-nums; }
.session-dur { color: var(--accent); font-weight: 700; }
.session-material { color: var(--muted); font-size: 14px; flex: 1; min-width: 120px; }
.session-notes {
  margin-top: 8px; font-size: 14px; color: var(--text-2);
  border-left: 2px solid var(--accent-strong);
  padding-left: 10px;
  white-space: pre-wrap;
}

.badge {
  font-size: 12px; font-weight: 700;
  padding: 3px 10px; border-radius: 999px;
  white-space: nowrap;
  background: color-mix(in srgb, var(--c, #8F8677) 16%, transparent);
  color: var(--c, #8F8677);
  border: 1px solid color-mix(in srgb, var(--c, #8F8677) 38%, transparent);
}

.day-group { margin-bottom: 18px; }
.day-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.day-head .day-label { font-weight: 700; font-size: 15px; text-transform: capitalize; }
.day-head .day-total { font-size: 13px; color: var(--gold); font-weight: 700; }

.view-head {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 10px; margin-bottom: 16px;
}
.view-head .count { font-size: 13px; color: var(--muted); }

/* ---------- progresso ---------- */
.stat-card { padding: 16px 18px; }
.stat-card .stat-label { font-size: 12px; color: var(--muted); }
.stat-card .stat-value { font-family: var(--serif); font-size: 26px; font-weight: 700; }

.bar-track {
  height: 14px; background: var(--bg-deep);
  border-radius: 999px; overflow: hidden;
  border: 1px solid var(--border-soft);
}
.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent) 60%, #F07B4A);
  border-radius: 999px;
  transition: width 0.5s ease;
  box-shadow: 0 0 12px rgba(228, 87, 63, 0.35);
}
.bar-fill.done { background: linear-gradient(90deg, #B98A32, var(--gold)); box-shadow: 0 0 12px rgba(217, 168, 78, 0.4); }

.goal-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.goal-value-badge {
  font-family: var(--serif); font-size: 15px; font-weight: 700;
  color: var(--gold);
  background: rgba(217, 168, 78, 0.12);
  border: 1px solid rgba(217, 168, 78, 0.3);
  border-radius: 999px;
  padding: 5px 14px;
}
.goal-summary { margin-top: 9px; font-size: 14px; color: var(--text-2); }

.chart { display: flex; align-items: flex-end; gap: 6px; height: 130px; }
.chart-col {
  flex: 1; height: 100%;
  display: flex; flex-direction: column; align-items: center;
  justify-content: flex-end; gap: 5px;
}
.chart-bar {
  width: 100%; max-width: 34px; min-height: 2px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(to top, var(--accent-strong), var(--accent));
  box-shadow: 0 0 8px rgba(228, 87, 63, 0.2);
  transition: height 0.4s ease;
}
.chart-bar.zero { background: var(--border-soft); box-shadow: none; }
.chart-day { font-size: 10px; color: var(--faint); }

.type-row {
  display: grid; grid-template-columns: 160px 1fr 80px;
  gap: 12px; align-items: center;
}
.type-row .type-name { font-size: 14px; }
.type-row .type-name .jp-dim { color: var(--muted); }
.type-row .type-track {
  height: 10px; background: var(--bg-deep);
  border-radius: 999px; overflow: hidden;
  border: 1px solid var(--border-soft);
}
.type-row .type-fill { height: 100%; border-radius: 999px; transition: width 0.4s; }
.type-row .type-val {
  font-size: 13px; color: var(--text-2);
  text-align: right; font-variant-numeric: tabular-nums;
}

/* ---------- vocabulário ---------- */
.vocab-form {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 1fr auto;
  gap: 12px; align-items: end;
  padding: 16px 18px;
}
.vocab-toolbar {
  margin-top: 18px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.vocab-toolbar input[type="search"] { flex: 1; min-width: 200px; }
.vocab-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.vocab-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  position: relative;
  transition: border-color 0.15s, transform 0.15s;
}
.vocab-card:hover { border-color: #4A4032; transform: translateY(-1px); }
.vocab-card-actions {
  position: absolute; top: 6px; right: 6px;
  display: flex; gap: 2px;
}
.vocab-jp { font-family: var(--serif); font-size: 23px; font-weight: 700; margin-top: 8px; }
.vocab-reading { font-size: 14px; color: var(--accent); }
.vocab-meaning { font-size: 14px; color: var(--text-2); }
.vocab-date { font-size: 11px; color: var(--faint); margin-top: 6px; }
.vocab-readings-extra { margin-top: 8px; }

/* ---------- chips de categoria ---------- */
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  border: 1px solid color-mix(in srgb, var(--c, var(--border)) 40%, var(--border));
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.chip:hover { border-color: var(--c, var(--accent)); color: var(--text-2); }
.chip.active {
  background: color-mix(in srgb, var(--c, var(--accent)) 18%, transparent);
  border-color: color-mix(in srgb, var(--c, var(--accent)) 45%, transparent);
  color: var(--c, var(--accent));
}

/* ---------- leituras (tags) ---------- */
.tag-input { display: flex; flex-direction: column; gap: 8px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 6px 4px 12px;
  font-size: 13px; color: var(--text-2);
}
.tag.tag-static { padding: 4px 12px; font-size: 12px; color: var(--muted); }
.tag-remove {
  background: none; border: none; cursor: pointer;
  color: var(--faint); font-size: 12px; line-height: 1;
  padding: 4px 6px; border-radius: 50%;
}
.tag-remove:hover { color: var(--accent); background: rgba(228, 87, 63, 0.12); }

/* ---------- flashcards ---------- */
.flash-section { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.flash-scene { width: 100%; max-width: 460px; min-height: 260px; perspective: 1200px; }
.flash-card {
  position: relative; width: 100%; min-height: 260px;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.4, 0.1, 0.2, 1);
}
.flash-card.flip { transform: rotateY(180deg); }
.flash-face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: linear-gradient(160deg, var(--card-hi), var(--card));
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 10px; padding: 30px; text-align: center;
}
.flash-face.back { transform: rotateY(180deg); border-color: rgba(228, 87, 63, 0.45); }
.speak-btn {
  position: absolute; top: 12px; right: 14px;
  font-size: 20px; padding: 6px 8px;
  border-radius: 999px;
}
.flash-word { font-family: var(--serif); font-size: 46px; font-weight: 700; }
.flash-reading { font-size: 21px; color: var(--accent); }
.flash-meaning { font-size: 17px; color: var(--text-2); }
.flash-hint { font-size: 13px; color: var(--faint); }
.flash-controls { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center; }
.flash-counter { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }

.volume-control {
  display: flex; align-items: center; gap: 10px;
  margin-top: 4px;
  font-size: 14px; color: var(--muted);
}
.volume-control input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 140px; height: 4px;
  background: var(--border);
  border-radius: 999px;
  padding: 0; border: none;
  cursor: pointer;
}
.volume-control input[type="range"]:focus { box-shadow: none; }
.volume-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(228, 87, 63, 0.18);
  cursor: pointer;
  margin-top: -6px;
}
.volume-control input[type="range"]::-moz-range-track {
  height: 4px; background: var(--border); border-radius: 999px;
}
.volume-control input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border: none; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(228, 87, 63, 0.18);
  cursor: pointer;
}

/* ---------- resumo / tabelas ---------- */
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.table-months .t-head, .table-months .t-row { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 8px; }
.table-all .t-head, .table-all .t-row { display: grid; grid-template-columns: 1.1fr 0.9fr 0.7fr 1fr 1.6fr; gap: 8px; }
.t-head {
  font-size: 13px; color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}
.t-row {
  font-size: 14px; padding: 9px 0;
  border-bottom: 1px solid var(--border-soft);
}
.t-row:last-child { border-bottom: none; }
.t-strong { font-weight: 700; text-transform: capitalize; }
.t-gold { color: var(--gold); font-weight: 700; }
.t-dim { color: var(--text-2); }
.t-num { font-variant-numeric: tabular-nums; }
.scroll-box { max-height: 420px; overflow-y: auto; }
.period-note { font-size: 13px; color: var(--muted); margin-bottom: 18px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; bottom: 22px; left: 50%;
  transform: translate(-50%, 20px);
  background: var(--bg-deep);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  padding: 11px 20px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 200;
  max-width: min(90vw, 480px);
  text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { border-color: rgba(228, 87, 63, 0.5); color: #F5AFA0; }
.toast.ok { border-color: rgba(95, 169, 141, 0.5); }

/* ---------- loading ---------- */
.loading {
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  padding: 60px 0; color: var(--muted); font-size: 14px;
}
.spinner {
  width: 34px; height: 34px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- responsivo ---------- */
@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .span-2, .span-3 { grid-column: span 2; }
  .vocab-form { grid-template-columns: 1fr 1fr; }
  .vocab-form .field, .vocab-form .btn { grid-column: span 2; }
  .segment-row input[type="time"] { min-width: 0; }
  .timer-num { font-size: 44px; }
  .type-row { grid-template-columns: 110px 1fr 70px; }
  .card { padding: 18px; }
  .chart-day:nth-child(odd) { font-size: 9px; }
  .table-all .t-head, .table-all .t-row { grid-template-columns: 1fr 0.9fr 0.8fr 1fr; }
  .table-all .t-head > :last-child, .table-all .t-row > :last-child { display: none; }
}