:root {
  color-scheme: light;
  --suite-bg: #f5f7fb;
  --suite-surface: #ffffff;
  --suite-surface-soft: #f8fafc;
  --suite-text: #172033;
  --suite-muted: #64748b;
  --suite-line: #dfe5ee;
  --suite-primary: #2563eb;
  --suite-primary-hover: #1d4ed8;
  --suite-primary-soft: #eff6ff;
  --suite-danger: #c2413b;
  --suite-shadow: 0 12px 35px rgba(15, 23, 42, 0.07);
  --suite-radius: 18px;
  --suite-control-radius: 11px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --suite-bg: #0b1120;
  --suite-surface: #111827;
  --suite-surface-soft: #172033;
  --suite-text: #e5edf8;
  --suite-muted: #9aa8bc;
  --suite-line: #2b374a;
  --suite-primary: #60a5fa;
  --suite-primary-hover: #93c5fd;
  --suite-primary-soft: #152a48;
  --suite-danger: #f08d87;
  --suite-shadow: 0 12px 35px rgba(0, 0, 0, 0.22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
button, input, textarea, select { color: inherit; font: inherit; }
button, summary, .file-button { cursor: pointer; }
[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  z-index: 3000;
  top: 8px;
  left: 8px;
  padding: 9px 14px;
  border-radius: 9px;
  color: #fff;
  background: var(--suite-primary);
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }

.app-toolbar {
  position: sticky;
  z-index: 900;
  top: 60px;
  border-bottom: 1px solid color-mix(in srgb, var(--suite-line) 86%, transparent);
  background: color-mix(in srgb, var(--suite-surface) 92%, transparent);
  backdrop-filter: blur(14px);
}

.app-toolbar__inner {
  width: min(1200px, calc(100% - 40px));
  min-height: 66px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-button {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  padding: 0;
  border: 0;
  color: var(--suite-text);
  background: transparent;
  text-align: left;
}
.brand-button > span:last-child { display: flex; flex-direction: column; }
.brand-button strong { font-size: 0.92rem; line-height: 1.3; }
.brand-button small { color: var(--suite-muted); font-size: 0.67rem; }
.brand-mark, .welcome-mark {
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #0284c7);
  font-weight: 900;
  letter-spacing: -0.05em;
}
.brand-mark { width: 39px; height: 39px; border-radius: 12px; font-size: 0.75rem; }
.toolbar-actions { display: flex; align-items: center; gap: 6px; }

.view { width: min(1200px, calc(100% - 40px)); margin: 0 auto; padding: 48px 0 80px; }
.eyebrow, .section-kicker { margin: 0; color: var(--suite-primary); font-size: 0.7rem; font-weight: 850; letter-spacing: 0.16em; }
.home-hero { max-width: 780px; padding: 20px 0 36px; }
.home-hero h1 { margin: 4px 0 0; font-size: clamp(3.4rem, 8vw, 6rem); line-height: 1; letter-spacing: -0.075em; }
.hero-subtitle { margin: 15px 0 0; color: var(--suite-text); font-size: clamp(1.15rem, 2.5vw, 1.45rem); font-weight: 750; }
.hero-message { margin: 14px 0 0; color: var(--suite-muted); line-height: 1.9; }

.card { border: 1px solid var(--suite-line); border-radius: var(--suite-radius); background: var(--suite-surface); box-shadow: var(--suite-shadow); }
.progress-card { padding: 24px 27px; }
.progress-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; }
.progress-heading h2 { margin: 3px 0 0; font-size: 1.2rem; }
.progress-number { margin: 0; color: var(--suite-muted); }
.progress-number strong { color: var(--suite-text); font-size: 2.1rem; line-height: 1; }
.progress-track, .mini-progress { overflow: hidden; border-radius: 99px; background: var(--suite-surface-soft); }
.progress-track { height: 11px; margin-top: 21px; }
.progress-track span, .mini-progress span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #2563eb, #0ea5e9); transition: width 220ms ease; }
.progress-meta { display: flex; justify-content: space-between; margin-top: 8px; color: var(--suite-muted); font-size: 0.76rem; }

.home-grid { margin-top: 24px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; }
.start-card, .today-card { min-height: 285px; padding: 30px; }
.start-card h2, .today-card h2 { margin: 4px 0 10px; font-size: 1.45rem; }
.start-card > p:not(.section-kicker) { max-width: 530px; margin: 0 0 24px; color: var(--suite-muted); }
.start-card .secondary-button { margin-left: 8px; }
.today-heading { display: flex; justify-content: space-between; gap: 12px; }
.streak-badge { align-self: flex-start; padding: 5px 9px; border-radius: 99px; color: var(--suite-primary); background: var(--suite-primary-soft); font-size: 0.68rem; font-weight: 800; }
.today-category { margin: 20px 0 5px; color: var(--suite-primary); font-size: 0.72rem; font-weight: 850; letter-spacing: 0.13em; }
.today-question { min-height: 72px; margin: 0 0 18px; font-size: 1.18rem; font-weight: 750; line-height: 1.7; }

.home-actions { margin-top: 24px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 13px; }
.home-actions button { min-height: 118px; padding: 17px; display: flex; flex-direction: column; align-items: flex-start; border: 1px solid var(--suite-line); border-radius: 15px; color: var(--suite-text); background: var(--suite-surface); text-align: left; }
.home-actions button:hover { border-color: color-mix(in srgb, var(--suite-primary) 38%, var(--suite-line)); background: var(--suite-primary-soft); transform: translateY(-2px); }
.home-actions button > span { color: var(--suite-primary); font-size: 1.25rem; }
.home-actions strong { margin-top: 7px; font-size: 0.9rem; }
.home-actions small { margin-top: 2px; color: var(--suite-muted); font-size: 0.68rem; }
.privacy-note { margin: 25px 0 0; padding: 15px 18px; border: 1px solid #bfdbfe; border-radius: 14px; color: color-mix(in srgb, var(--suite-primary) 35%, var(--suite-text)); background: var(--suite-primary-soft); font-size: 0.82rem; }
.privacy-note span { margin-right: 7px; color: var(--suite-primary); }

.primary-button, .secondary-button, .ghost-button, .danger-button, .text-button, .icon-button, .back-button, .file-button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--suite-control-radius);
  font-weight: 760;
}
.primary-button { padding: 9px 16px; color: #fff; background: var(--suite-primary); box-shadow: 0 5px 14px color-mix(in srgb, var(--suite-primary) 24%, transparent); }
.primary-button:hover { background: var(--suite-primary-hover); }
.secondary-button, .file-button { padding: 9px 16px; border-color: var(--suite-line); color: var(--suite-text); background: var(--suite-surface); }
.secondary-button:hover, .file-button:hover { border-color: color-mix(in srgb, var(--suite-primary) 45%, var(--suite-line)); background: var(--suite-primary-soft); }
.ghost-button, .back-button { padding: 8px 11px; color: var(--suite-muted); background: transparent; }
.ghost-button:hover, .back-button:hover { color: var(--suite-primary); background: var(--suite-primary-soft); }
.text-button { padding: 4px; color: var(--suite-primary); background: transparent; }
.icon-button { width: 40px; padding: 0; color: var(--suite-muted); background: transparent; }
.icon-button:hover { color: var(--suite-primary); background: var(--suite-primary-soft); }
.danger-button { padding: 9px 16px; color: #fff; background: var(--suite-danger); }
.danger-button:disabled { cursor: not-allowed; opacity: 0.45; }
.large-button { min-height: 49px; padding: 11px 19px; }

.question-view { width: min(980px, calc(100% - 40px)); }
.question-progress-row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; color: var(--suite-muted); font-size: 0.75rem; }
.question-progress-row > :last-child { justify-self: end; }
.mini-progress { height: 5px; margin: 13px 0 34px; }
.question-card { padding: clamp(28px, 6vw, 62px); border: 1px solid var(--suite-line); border-radius: 24px; background: var(--suite-surface); box-shadow: var(--suite-shadow); }
.question-category { margin: 0 0 16px; color: var(--suite-primary); font-size: 0.72rem; font-weight: 850; letter-spacing: 0.18em; }
.question-card h1 { max-width: 820px; margin: 0 0 36px; font-size: clamp(2rem, 5vw, 3.6rem); line-height: 1.38; letter-spacing: -0.04em; }
.answer-label { display: block; margin-bottom: 8px; font-size: 0.82rem; font-weight: 800; }
#answer-input { width: 100%; min-height: 240px; padding: 18px; border: 1px solid var(--suite-line); border-radius: 14px; color: var(--suite-text); background: var(--suite-surface-soft); font-size: 1rem; line-height: 1.85; resize: vertical; }
.answer-meta { display: flex; justify-content: space-between; gap: 15px; margin: 7px 2px 0; color: var(--suite-muted); font-size: 0.69rem; }
.history-panel { margin-top: 20px; border-top: 1px solid var(--suite-line); }
.history-panel summary { padding: 16px 0 4px; color: var(--suite-muted); font-size: 0.79rem; font-weight: 750; }
.history-item { margin-top: 10px; padding: 13px; border-radius: 11px; background: var(--suite-surface-soft); }
.history-item time { color: var(--suite-muted); font-size: 0.68rem; }
.history-item p { margin: 5px 0 0; white-space: pre-wrap; font-size: 0.82rem; }
.question-actions { margin-top: 27px; display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.question-actions > div { display: flex; gap: 8px; }

.collection-view { width: min(1100px, calc(100% - 40px)); }
.view-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
.view-heading h1 { margin: 4px 0 5px; font-size: clamp(2.2rem, 5vw, 3.5rem); letter-spacing: -0.05em; }
.view-heading p:not(.eyebrow) { margin: 0; color: var(--suite-muted); }
.filter-card { padding: 18px; display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr; gap: 13px; }
.filter-card label, .review-search, .theme-field, .delete-dialog label { color: var(--suite-muted); font-size: 0.73rem; font-weight: 750; }
input, textarea, select { border: 1px solid var(--suite-line); color: var(--suite-text); background: var(--suite-surface); }
.filter-card input, .filter-card select, .review-search input, .theme-field select, .delete-dialog input { width: 100%; height: 44px; margin-top: 5px; padding: 0 12px; }
.result-count { margin: 18px 2px 10px; color: var(--suite-muted); font-size: 0.78rem; }
.question-list { display: grid; gap: 9px; }
.question-row { width: 100%; padding: 16px 18px; display: grid; grid-template-columns: 48px 1fr auto; align-items: center; gap: 14px; border: 1px solid var(--suite-line); border-radius: 14px; color: var(--suite-text); background: var(--suite-surface); text-align: left; }
.question-row:hover { border-color: color-mix(in srgb, var(--suite-primary) 40%, var(--suite-line)); transform: translateY(-1px); }
.question-row__number { color: var(--suite-muted); font-size: 0.72rem; font-weight: 850; }
.question-row__category { display: block; margin-bottom: 3px; color: var(--suite-primary); font-size: 0.62rem; font-weight: 850; letter-spacing: 0.12em; }
.question-row__text { font-size: 0.9rem; line-height: 1.55; }
.status-badge { padding: 4px 9px; border-radius: 99px; font-size: 0.65rem; font-weight: 800; white-space: nowrap; }
.status-badge--answered { color: #166534; background: #dcfce7; }
.status-badge--postponed { color: #92400e; background: #fef3c7; }
.status-badge--unanswered { color: var(--suite-muted); background: var(--suite-surface-soft); }
html[data-theme="dark"] .status-badge--answered { color: #86efac; background: #12351f; }
html[data-theme="dark"] .status-badge--postponed { color: #fcd34d; background: #3a2a0e; }

.review-search { display: block; max-width: 560px; margin-bottom: 28px; }
.review-content { display: grid; gap: 38px; }
.review-category-heading { display: flex; align-items: baseline; gap: 12px; margin-bottom: 13px; }
.review-category-heading p { margin: 0; color: var(--suite-primary); font-size: 0.68rem; font-weight: 850; letter-spacing: 0.15em; }
.review-category-heading h2 { margin: 0; font-size: 1.35rem; }
.review-answers { display: grid; gap: 12px; }
.review-answer { padding: 23px; border: 1px solid var(--suite-line); border-radius: 16px; background: var(--suite-surface); box-shadow: var(--suite-shadow); }
.review-answer button { width: 100%; padding: 0; border: 0; color: inherit; background: transparent; text-align: left; }
.review-answer h3 { margin: 0; font-size: 0.93rem; line-height: 1.6; }
.review-answer p { margin: 13px 0 0; white-space: pre-wrap; line-height: 1.8; }
.review-answer time { display: block; margin-top: 12px; color: var(--suite-muted); font-size: 0.67rem; }
.empty-review { padding: 65px 20px; text-align: center; }

.data-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.data-card { padding: 26px; }
.data-card h2 { margin: 4px 0 8px; font-size: 1.25rem; }
.data-card > p:not(.section-kicker) { margin: 0 0 20px; color: var(--suite-muted); font-size: 0.86rem; }
.button-stack { display: flex; flex-wrap: wrap; gap: 8px; }
.file-button { display: inline-flex; align-items: center; }
.theme-field { display: block; max-width: 320px; }
.setting-note { margin-top: 10px !important; font-size: 0.72rem !important; }
.danger-card { border-color: color-mix(in srgb, var(--suite-danger) 28%, var(--suite-line)); }
.storage-explanation { margin: 22px 0 0; padding: 17px 19px; border-radius: 14px; color: var(--suite-muted); background: var(--suite-surface-soft); font-size: 0.78rem; line-height: 1.8; }

dialog { padding: 0; border: 0; color: var(--suite-text); background: transparent; }
dialog::backdrop { background: rgba(15, 23, 42, 0.48); backdrop-filter: blur(4px); }
.dialog-card { width: min(540px, calc(100vw - 28px)); padding: clamp(26px, 5vw, 42px); border: 1px solid var(--suite-line); border-radius: 22px; color: var(--suite-text); background: var(--suite-surface); box-shadow: 0 28px 90px rgba(15, 23, 42, 0.3); }
.dialog-card h2 { margin: 4px 0 14px; font-size: 1.7rem; }
.dialog-card p:not(.eyebrow) { color: var(--suite-muted); line-height: 1.8; }
.welcome-mark { width: 62px; height: 62px; margin-bottom: 22px; border-radius: 18px; }
.welcome-dialog .large-button { width: 100%; margin-top: 10px; }
.dialog-actions { margin-top: 22px; display: flex; justify-content: flex-end; gap: 8px; }

.toast { position: fixed; z-index: 4000; right: 22px; bottom: 22px; max-width: min(430px, calc(100% - 30px)); padding: 13px 17px; border-radius: 12px; color: #fff; background: #1e293b; box-shadow: 0 14px 35px rgba(15, 23, 42, 0.3); font-size: 0.82rem; opacity: 0; pointer-events: none; transform: translateY(12px); transition: 160ms ease; }
.toast.is-visible { opacity: 1; transform: none; }
.toast.is-error { background: #9f2f2a; }

@media (max-width: 820px) {
  .home-grid, .data-grid { grid-template-columns: 1fr; }
  .home-actions { grid-template-columns: repeat(2, 1fr); }
  .filter-card { grid-template-columns: 1fr 1fr; }
  .filter-card label:first-child { grid-column: 1 / -1; }
  .question-card { padding: 34px 26px; }
}

@media (max-width: 600px) {
  .app-toolbar__inner, .view { width: calc(100% - 28px); }
  .app-toolbar__inner { min-height: 58px; }
  .app-toolbar { top: 60px; }
  .toolbar-actions .ghost-button { display: none; }
  .view { padding: 28px 0 60px; }
  .home-hero { padding-top: 12px; }
  .home-hero h1 { font-size: 3.5rem; }
  .hero-message br { display: none; }
  .progress-card, .start-card, .today-card, .data-card { padding: 21px; }
  .progress-heading { align-items: flex-start; flex-direction: column; gap: 12px; }
  .home-actions { grid-template-columns: 1fr; }
  .home-actions button { min-height: 95px; }
  .start-card .secondary-button { margin: 8px 0 0; }
  .question-progress-row { grid-template-columns: 1fr auto; }
  .question-progress-row > :last-child { display: none; }
  .question-card { padding: 28px 20px; border-radius: 18px; }
  .question-card h1 { margin-bottom: 28px; font-size: 2rem; }
  #answer-input { min-height: 260px; font-size: 16px; }
  .answer-meta span:last-child { display: none; }
  .question-actions { align-items: stretch; flex-direction: column; }
  .question-actions > div { display: grid; grid-template-columns: 1fr 1fr; }
  .question-actions > button { width: 100%; order: 2; }
  .view-heading { align-items: flex-start; flex-direction: column; gap: 15px; }
  .filter-card { grid-template-columns: 1fr; }
  .filter-card label:first-child { grid-column: auto; }
  .question-row { grid-template-columns: 34px 1fr; padding: 14px; }
  .question-row .status-badge { grid-column: 2; justify-self: start; }
  .button-stack { flex-direction: column; }
  .button-stack > * { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}