@charset "UTF-8";

:root {
  --color-bg: #f7f8fb;
  --color-surface: #ffffff;
  --color-surface-muted: #f0f2f6;
  --color-text: #172033;
  --color-text-muted: #7d8799;
  --color-border: #e4e8ef;
  --color-primary: #3769df;
  --color-primary-soft: #edf2ff;
  --color-danger: #c55454;
  --color-success: #2e9875;
  --color-warning: #b2782a;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 4px 16px rgba(25, 37, 63, .05);
  --shadow-md: 0 12px 36px rgba(25, 37, 63, .12);
  --content-width: 1120px;
  color-scheme: light;
}

html[data-theme="dark"] {
  --color-bg: #111622;
  --color-surface: #1a2130;
  --color-surface-muted: #232c3d;
  --color-text: #f3f6fc;
  --color-text-muted: #9aa6b9;
  --color-border: #303b4f;
  --color-primary-soft: #25345f;
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, .16);
  --shadow-md: 0 12px 36px rgba(0, 0, 0, .32);
  color-scheme: dark;
}

html[data-theme="auto"] { color-scheme: light; }
@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    --color-bg: #111622;
    --color-surface: #1a2130;
    --color-surface-muted: #232c3d;
    --color-text: #f3f6fc;
    --color-text-muted: #9aa6b9;
    --color-border: #303b4f;
    --color-primary-soft: #25345f;
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, .16);
    --shadow-md: 0 12px 36px rgba(0, 0, 0, .32);
    color-scheme: dark;
  }
}

html[data-accent="green"] { --color-primary: #2d9475; --color-primary-soft: #e6f6f0; }
html[data-accent="purple"] { --color-primary: #7859c9; --color-primary-soft: #f0ecff; }
html[data-accent="orange"] { --color-primary: #d47538; --color-primary-soft: #fff0e4; }
html[data-theme="dark"][data-accent="green"], html[data-theme="auto"][data-accent="green"] { --color-primary-soft: #1e443d; }
html[data-theme="dark"][data-accent="purple"], html[data-theme="auto"][data-accent="purple"] { --color-primary-soft: #382d5a; }
html[data-theme="dark"][data-accent="orange"], html[data-theme="auto"][data-accent="orange"] { --color-primary-soft: #4e3625; }

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--color-bg); color: var(--color-text); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; font-size: 15px; line-height: 1.6; }
button, input, select { font: inherit; }
button { cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid color-mix(in srgb, var(--color-primary) 40%, transparent); outline-offset: 2px; }
a { color: inherit; text-decoration: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.app-shell { min-height: 100vh; }
.topbar { height: 76px; padding: 0 32px; display: flex; align-items: center; gap: 48px; border-bottom: 1px solid var(--color-border); background: color-mix(in srgb, var(--color-bg) 92%, transparent); }
.brand { display: inline-flex; align-items: center; gap: 10px; min-width: 170px; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--color-primary); color: #fff; font-size: 22px; font-weight: 700; transform: rotate(-10deg); }
.brand strong, .brand small { display: block; line-height: 1.1; }
.brand strong { font-size: 17px; letter-spacing: -.02em; }
.brand small { margin-top: 4px; color: var(--color-text-muted); font-size: 8px; font-weight: 700; letter-spacing: .18em; }
.desktop-nav { display: flex; align-self: stretch; gap: 28px; }
.nav-link { position: relative; display: inline-flex; align-items: center; gap: 8px; padding: 0 2px; border: 0; background: none; color: var(--color-text-muted); font-size: 13px; font-weight: 700; }
.nav-link::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 3px; border-radius: 3px 3px 0 0; background: transparent; }
.nav-link.is-active { color: var(--color-text); }
.nav-link.is-active::after { background: var(--color-primary); }
.header-status { margin-left: auto; display: flex; align-items: center; gap: 8px; color: var(--color-text-muted); font-size: 12px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-success); }
main { width: min(var(--content-width), calc(100% - 48px)); margin: 0 auto; }
.view { padding: 58px 0 80px; }
.view[hidden] { display: none; }
.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
.home-heading { margin-bottom: 30px; }
.eyebrow, .card-kicker { margin: 0 0 8px; color: var(--color-primary); font-size: 10px; font-weight: 800; letter-spacing: .19em; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(28px, 4vw, 40px); line-height: 1.15; letter-spacing: -.045em; }
h2 { margin-bottom: 4px; font-size: 18px; line-height: 1.25; letter-spacing: -.02em; }
.page-description { margin-bottom: 0; color: var(--color-text-muted); font-size: 14px; }
.button { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 8px 15px; border: 1px solid transparent; border-radius: var(--radius-sm); font-size: 13px; font-weight: 700; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--color-primary); color: #fff; box-shadow: 0 6px 14px color-mix(in srgb, var(--color-primary) 22%, transparent); }
.button-primary:hover { background: color-mix(in srgb, var(--color-primary) 88%, #000); }
.button-secondary { border-color: var(--color-border); background: var(--color-surface); color: var(--color-text); }
.button-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.button-danger { border-color: color-mix(in srgb, var(--color-danger) 30%, var(--color-border)); background: transparent; color: var(--color-danger); }
.home-toolbar { display: flex; align-items: center; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid var(--color-border); }
.filter-group { display: flex; gap: 4px; }
.filter-chip, .layout-button { border: 0; background: transparent; color: var(--color-text-muted); font-size: 12px; font-weight: 700; }
.filter-chip { padding: 8px 12px; border-radius: 20px; }
.filter-chip:hover, .filter-chip.is-active { background: var(--color-primary-soft); color: var(--color-primary); }
.search-box { min-width: 190px; margin-left: auto; display: flex; align-items: center; gap: 8px; padding: 0 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text-muted); }
.search-box input { width: 100%; height: 36px; border: 0; outline: 0; background: transparent; color: var(--color-text); font-size: 12px; }
.layout-switch { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); }
.layout-button { width: 32px; height: 30px; padding: 0; border-radius: 5px; font-size: 17px; }
.layout-button.is-active { background: var(--color-primary-soft); color: var(--color-primary); }
.feed-meta { display: flex; justify-content: space-between; padding: 14px 0 10px; color: var(--color-text-muted); font-size: 11px; }
.timeline { min-height: 100px; }
.article-list { display: grid; gap: 12px; }
.article-card { position: relative; display: block; padding: 18px 20px 17px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-sm); transition: background .18s ease; }
.article-card:hover { background: color-mix(in srgb, var(--color-surface) 88%, var(--color-primary-soft)); }
.article-card.is-read { opacity: .62; }
.article-card.is-read .article-title { font-weight: 600; }
.article-card.is-unread .article-title { font-weight: 800; }
.article-topline { display: flex; align-items: center; gap: 8px; margin-bottom: 9px; color: var(--color-text-muted); font-size: 11px; }
.source-icon { width: 18px; height: 18px; border-radius: 5px; }
.source-name { color: var(--color-text); font-weight: 700; }
.article-date::before { content: "•"; margin-right: 8px; color: var(--color-border); }
.article-link { display: flex; align-items: flex-start; gap: 16px; }
.article-body { flex: 1; min-width: 0; }
.article-thumb { width: 96px; height: 96px; flex: 0 0 auto; margin-right: 34px; object-fit: cover; border-radius: 10px; background: var(--color-surface-muted); }
.article-title { margin: 0 36px 6px 0; font-size: 16px; line-height: 1.45; letter-spacing: -.02em; }
.article-summary { max-width: 760px; margin: 0; display: -webkit-box; overflow: hidden; color: var(--color-text-muted); font-size: 12px; line-height: 1.7; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.star-button { position: absolute; top: 18px; right: 18px; width: 32px; height: 32px; border: 0; border-radius: 50%; background: transparent; color: var(--color-text-muted); font-size: 20px; line-height: 1; }
.star-button:hover, .star-button.is-later { background: var(--color-primary-soft); color: var(--color-primary); }
.columns-layout { display: flex; gap: 16px; overflow-x: auto; padding: 2px 2px 18px; scroll-snap-type: x proximity; cursor: grab; }
.columns-layout.is-dragging { cursor: grabbing; user-select: none; }
.feed-column { flex: 0 0 320px; overflow: hidden; scroll-snap-align: start; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.column-heading { display: flex; align-items: center; justify-content: space-between; padding: 15px 16px; border-bottom: 1px solid var(--color-border); }
.column-title { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 800; }
.column-count { color: var(--color-text-muted); font-size: 11px; }
.column-articles { max-height: 620px; overflow-y: auto; display: grid; gap: 8px; padding: 10px; background: var(--color-surface-muted); }
.column-articles .article-card { padding: 15px 16px; border-radius: 10px; box-shadow: none; }
.column-articles .article-thumb { width: 56px; height: 56px; margin-right: 36px; }
.column-articles .article-title { font-size: 14px; }
.column-articles .article-summary { font-size: 11px; }
.empty-state { margin: 36px auto; max-width: 420px; padding: 42px 24px; text-align: center; }
.empty-icon { width: 52px; height: 52px; display: grid; place-items: center; margin: 0 auto 18px; border-radius: 18px; background: var(--color-primary-soft); color: var(--color-primary); font-size: 25px; }
.empty-state h2 { font-size: 21px; }
.empty-state p { margin-bottom: 22px; color: var(--color-text-muted); font-size: 13px; }
.add-feed-card { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(380px, 1.2fr); gap: 8px 32px; align-items: center; margin-bottom: 46px; padding: 24px 28px; border: 1px solid color-mix(in srgb, var(--color-primary) 20%, var(--color-border)); border-radius: var(--radius-md); background: var(--color-primary-soft); }
.add-feed-card h2 { margin-bottom: 6px; }
.add-feed-card p:not(.card-kicker), .settings-card p { margin-bottom: 0; color: var(--color-text-muted); font-size: 12px; }
.add-feed-form { display: flex; gap: 8px; }
.add-feed-form input { min-width: 0; flex: 1; height: 42px; padding: 0 13px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); outline: 0; font-size: 12px; }
.add-feed-form input:focus { border-color: var(--color-primary); }
.form-message { grid-column: 2; min-height: 20px; color: var(--color-primary) !important; }
.catalog-list { display: grid; gap: 32px; }
.catalog-category h2 { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; font-size: 16px; }
.catalog-category h2::after { content: ""; height: 1px; flex: 1; background: var(--color-border); }
.catalog-items { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.catalog-item { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.catalog-item:hover { border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-border)); }
.catalog-item-info { min-width: 0; flex: 1; }
.catalog-item-title { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 800; }
.catalog-item-url { display: block; overflow: hidden; color: var(--color-text-muted); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.catalog-toggle { position: relative; width: 40px; height: 24px; flex: 0 0 auto; border: 0; border-radius: 20px; background: var(--color-border); }
.catalog-toggle::after { content: ""; position: absolute; top: 4px; left: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--color-surface); box-shadow: 0 1px 3px rgba(0,0,0,.18); transition: transform .18s ease; }
.catalog-toggle.is-subscribed { background: var(--color-primary); }
.catalog-toggle.is-subscribed::after { transform: translateX(16px); }
.custom-badge { display: inline-block; margin-left: 5px; padding: 1px 5px; border-radius: 4px; background: var(--color-primary-soft); color: var(--color-primary); font-size: 9px; }
.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.settings-card { padding: 26px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.settings-card:last-child { grid-column: 1 / -1; }
.section-title { display: flex; gap: 13px; align-items: flex-start; margin-bottom: 26px; }
.section-number { color: var(--color-primary); font-family: ui-monospace, monospace; font-size: 11px; font-weight: 800; }
.section-title h2 { font-size: 19px; }
.setting-field { margin: 0 0 24px; padding: 0; border: 0; }
.setting-field legend { margin-bottom: 10px; color: var(--color-text-muted); font-size: 11px; font-weight: 700; }
.choice-grid { display: grid; gap: 8px; }
.choice-grid.two { grid-template-columns: repeat(2, 1fr); }
.choice-grid.three { grid-template-columns: repeat(3, 1fr); }
.choice-card, .theme-card { position: relative; display: flex; align-items: center; gap: 10px; min-height: 56px; padding: 10px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer; }
.choice-card:has(input:checked), .theme-card:has(input:checked) { border-color: var(--color-primary); background: var(--color-primary-soft); }
.choice-card input, .theme-card input, .accent-picker input { position: absolute; opacity: 0; }
.choice-card span { display: flex; flex-direction: column; }
.choice-card strong, .theme-card strong { font-size: 12px; }
.choice-card small { color: var(--color-text-muted); font-size: 10px; }
.setting-row, .toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 0; border-top: 1px solid var(--color-border); }
.setting-row span, .toggle-row span:first-child { display: flex; flex-direction: column; }
.setting-row strong, .toggle-row strong { font-size: 12px; }
.setting-row small, .toggle-row small { color: var(--color-text-muted); font-size: 10px; }
.setting-row select { padding: 7px 9px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); font-size: 11px; }
.toggle-row { position: relative; cursor: pointer; }
.toggle-row input { position: absolute; opacity: 0; }
.toggle-ui { width: 40px; height: 24px; flex: 0 0 auto; border-radius: 20px; background: var(--color-border); transition: background .18s ease; }
.toggle-ui::after { content: ""; display: block; width: 16px; height: 16px; margin: 4px; border-radius: 50%; background: var(--color-surface); box-shadow: 0 1px 3px rgba(0,0,0,.18); transition: transform .18s ease; }
.toggle-row input:checked + .toggle-ui { background: var(--color-primary); }
.toggle-row input:checked + .toggle-ui::after { transform: translateX(16px); }
.theme-card { display: flex; flex-direction: column; align-items: stretch; gap: 6px; padding: 7px; }
.theme-preview { height: 33px; border-radius: 5px; border: 1px solid var(--color-border); }
.theme-card strong { padding: 0 4px 3px; }
.theme-light { background: linear-gradient(135deg, #fff 50%, #edf2ff 50%); }
.theme-dark { background: linear-gradient(135deg, #202a3b 50%, #121722 50%); }
.theme-auto { background: linear-gradient(135deg, #fff 50%, #202a3b 50%); }
.accent-picker { display: flex; gap: 12px; }
.accent-picker label { position: relative; cursor: pointer; }
.accent-swatch { width: 31px; height: 31px; display: block; border: 3px solid var(--color-surface); border-radius: 50%; box-shadow: 0 0 0 1px var(--color-border); }
.accent-picker input:checked + .accent-swatch { box-shadow: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-primary); }
.accent-blue { background: #3769df; }.accent-green { background: #2d9475; }.accent-purple { background: #7859c9; }.accent-orange { background: #d47538; }
.data-actions { display: flex; gap: 8px; padding-bottom: 22px; }
.danger-zone { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 20px; border-top: 1px solid color-mix(in srgb, var(--color-danger) 25%, var(--color-border)); }
.danger-zone strong { font-size: 12px; }.danger-zone p { margin: 3px 0 0; color: var(--color-text-muted); font-size: 11px; }
.mobile-tabs { display: none; }
.toast { position: fixed; z-index: 10; right: 20px; bottom: 20px; max-width: min(360px, calc(100% - 40px)); padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); box-shadow: var(--shadow-md); color: var(--color-text); font-size: 12px; opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity .2s ease, transform .2s ease; }
.toast.is-visible { opacity: 1; transform: translateY(0); }
.loading-state { padding: 38px; text-align: center; color: var(--color-text-muted); font-size: 12px; }
.error-note { padding: 12px 16px; color: var(--color-danger); font-size: 12px; }

@media (max-width: 767px) {
  .topbar { height: 64px; padding: 0 18px; }.desktop-nav, .header-status { display: none; }.brand { min-width: 0; }
  main { width: min(100% - 32px, var(--content-width)); }.view { padding: 34px 0 94px; }.page-heading { align-items: flex-start; margin-bottom: 26px; }.page-heading .button { align-self: flex-end; padding: 8px 10px; font-size: 11px; }.home-heading { gap: 10px; }.home-heading .eyebrow { margin-bottom: 4px; }.page-description { font-size: 12px; }
  h1 { font-size: 28px; }.home-toolbar { flex-wrap: wrap; gap: 8px; }.filter-group { width: 100%; overflow-x: auto; }.filter-chip { white-space: nowrap; }.search-box { order: 2; min-width: 0; flex: 1; margin-left: 0; }.layout-switch { order: 3; }
  .feed-meta { padding-top: 12px; }.article-card { padding: 16px; }.article-title { font-size: 14px; }.article-summary { font-size: 11px; }.star-button { top: 14px; right: 12px; }.article-topline { padding-right: 28px; }.article-list { gap: 10px; }.article-link { gap: 12px; }.article-thumb { width: 72px; height: 72px; margin-right: 26px; }
  .columns-layout { margin-right: -16px; padding-right: 18px; }.feed-column { flex-basis: min(320px, calc(100vw - 48px)); }
  .add-feed-card { display: block; margin-bottom: 34px; padding: 20px; }.add-feed-form { margin-top: 18px; flex-direction: column; }.form-message { margin-top: 8px; }
  .catalog-items { grid-template-columns: 1fr; }.catalog-list { gap: 26px; }
  .settings-grid { grid-template-columns: 1fr; }.settings-card:last-child { grid-column: auto; }.settings-card { padding: 20px; }.choice-grid.three { gap: 5px; }.theme-card { padding: 5px; }.theme-preview { height: 26px; }.theme-card strong { font-size: 10px; }.data-actions { flex-wrap: wrap; }.data-actions .button { flex: 1; }
  .mobile-tabs { position: fixed; z-index: 5; right: 0; bottom: 0; left: 0; height: 68px; display: flex; justify-content: space-around; padding-bottom: env(safe-area-inset-bottom); border-top: 1px solid var(--color-border); background: color-mix(in srgb, var(--color-surface) 94%, transparent); }.tab-link { flex: 1; border: 0; background: transparent; color: var(--color-text-muted); }.tab-link span, .tab-link small { display: block; line-height: 1; }.tab-link span { margin-bottom: 5px; font-size: 18px; }.tab-link small { font-size: 10px; font-weight: 700; }.tab-link.is-active { color: var(--color-primary); }
}

@media (min-width: 768px) and (max-width: 960px) { main { width: calc(100% - 40px); }.topbar { padding: 0 20px; }.settings-grid { grid-template-columns: 1fr; }.settings-card:last-child { grid-column: auto; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } }