/* ETHsliv — кобальтовый «архив»: синяя шапка, оглавление строками, чтение без отвлечений.
   Цвета и размеры меняются в блоках :root ниже. */

:root {
  --mast: #1f47ff;
  --on-mast-soft: #d6e1ff;
  --bg: #f7f9fe;
  --surface: #ffffff;
  --field: #eef2fd;
  --text: #0a1233;
  --text-2: #33406b;
  --muted: #5b6890;
  --line: #dce3f6;
  --accent: #1f47ff;
  --ring: rgba(31, 71, 255, 0.2);
  --header-bg: rgba(247, 249, 254, 0.88);
  --note-shadow: 0 24px 48px -24px rgba(18, 54, 214, 0.5);

  --display: "Unbounded", "Onest", system-ui, -apple-system, "Segoe UI", Roboto, Arial,
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font: "Onest", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC", sans-serif;

  --r: 14px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --bar-h: 60px;
  --rail-h: 46px;
  --gut: 20px;
  --bleed: 16px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --mast: #1b3fe6;
  --bg: #060b1f;
  --surface: #0d1536;
  --field: #111b45;
  --text: #eaf0ff;
  --text-2: #b9c6ea;
  --muted: #8e9cc6;
  --line: #1c2859;
  --accent: #7c9bff;
  --ring: rgba(124, 155, 255, 0.3);
  --header-bg: rgba(6, 11, 31, 0.86);
  --note-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.75);
  color-scheme: dark;
}

@media (min-width: 760px) {
  :root {
    --bar-h: 68px;
    --gut: 32px;
    --bleed: 20px;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
}

::selection {
  color: #fff;
  background: var(--mast);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.site-header :focus-visible,
.masthead :focus-visible {
  outline-color: #fff;
}

.site-header.solid :focus-visible {
  outline-color: var(--accent);
}

.wrap {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding-left: max(var(--gut), env(safe-area-inset-left));
  padding-right: max(var(--gut), env(safe-area-inset-right));
}

main {
  flex: 1;
  outline: none;
}

.noscript {
  padding: 120px var(--gut) 0;
  color: var(--muted);
}

/* ---------- Шапка ---------- */

.site-header {
  --fg: #fff;
  --fg-soft: var(--on-mast-soft);
  --hline: rgba(255, 255, 255, 0.32);
  --mark-bg: #fff;
  --mark-fg: var(--mast);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s, border-color 0.25s;
}

.site-header.solid {
  --fg: var(--text);
  --fg-soft: var(--muted);
  --hline: var(--line);
  --mark-bg: var(--mast);
  --mark-fg: #fff;
  background: var(--header-bg);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  backdrop-filter: saturate(160%) blur(16px);
  border-bottom-color: var(--line);
}

.bar {
  height: var(--bar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--fg);
  font-family: var(--display);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  transition: color 0.25s;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--mark-fg);
  font-size: 0.95rem;
  font-weight: 800;
  background: var(--mark-bg);
  border-radius: 10px;
  transition: background-color 0.25s, color 0.25s;
}

.icon-btn {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--hline);
  border-radius: 12px;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background-color 0.2s;
}

:root[data-theme="dark"] .i-moon,
:root:not([data-theme="dark"]) .i-sun {
  display: none;
}

@media (hover: hover) {
  .icon-btn:hover {
    background: rgba(255, 255, 255, 0.16);
  }

  .site-header.solid .icon-btn:hover {
    background: var(--field);
  }
}

.rail-wrap {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.3s var(--ease);
}

.site-header.rail-away .rail-wrap {
  grid-template-rows: 0fr;
}

.rail-clip {
  min-height: 0;
  overflow: hidden;
}

.rail {
  position: relative;
  height: var(--rail-h);
  display: flex;
  gap: 2px;
  padding-left: calc(var(--gut) - 14px);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 14px, #000 calc(100% - 28px), transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 14px, #000 calc(100% - 28px), transparent 100%);
}

.rail::-webkit-scrollbar {
  display: none;
}

.tab {
  position: relative;
  flex: none;
  display: flex;
  align-items: center;
  padding: 0 14px;
  color: var(--fg-soft);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}

.tab::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--fg);
  transform: scaleX(0);
  transition: transform 0.3s var(--ease);
}

.site-header.solid .tab::after {
  background: var(--accent);
}

.tab[aria-current="page"] {
  color: var(--fg);
  font-weight: 600;
}

.tab[aria-current="page"]::after {
  transform: scaleX(1);
}

@media (hover: hover) {
  .tab:hover {
    color: var(--fg);
  }
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  height: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

body[data-view="section"] .progress {
  opacity: 1;
}

.progress i {
  display: block;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
}

/* ---------- Шапка страницы (кобальтовый блок) ---------- */

.masthead {
  padding: calc(var(--bar-h) + 44px) 0 104px;
  color: #fff;
  background: var(--mast);
}

.wordmark {
  margin: 0;
  padding-bottom: 0.06em;
  overflow: hidden;
  font-family: var(--display);
  font-size: clamp(2.6rem, 15.2vw, 9.25rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.055em;
}

.wordmark span {
  display: block;
  animation: reveal 1s var(--ease) both;
}

@keyframes reveal {
  from {
    transform: translateY(105%);
  }
  to {
    transform: none;
  }
}

.lead {
  max-width: 30rem;
  margin: 22px 0 0;
  color: var(--on-mast-soft);
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  line-height: 1.45;
}

@media (min-width: 760px) {
  .masthead {
    padding: calc(var(--bar-h) + 96px) 0 136px;
  }
}

.note {
  position: relative;
  z-index: 1;
  max-width: 46rem;
  margin: -68px 0 0;
  padding: 24px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--note-shadow);
}

.note h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.note p {
  margin: 0;
  color: var(--text-2);
  line-height: 1.6;
}

@media (min-width: 760px) {
  .note {
    margin-top: -88px;
    padding: 28px 32px;
  }

  .note h2 {
    font-size: 1.35rem;
  }
}

/* ---------- Оглавление (главная) ---------- */

.index {
  display: grid;
  grid-template-columns: 1fr;
  margin: 56px 0 24px;
  border-bottom: 1px solid var(--line);
}

.row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 24px 0;
  color: var(--text);
  text-decoration: none;
  border-top: 1px solid var(--line);
  isolation: isolate;
  transition: color 0.3s;
}

.row::before,
.pager-link::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--bleed) * -1);
  right: calc(var(--bleed) * -1);
  z-index: -1;
  background: var(--mast);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.5s var(--ease);
}

.row-name {
  min-width: 0;
  overflow: hidden;
  font-family: var(--display);
  font-size: clamp(1.3rem, 4.8vw, 2.05rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: transform 0.4s var(--ease);
}

.row-sub {
  display: none;
  flex: 1;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.3s;
}

.row-name {
  flex: 1;
}

.row-sub + .row-meta,
.row-name + .row-meta {
  margin-left: auto;
}

.row-meta {
  flex: none;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.3s;
}

.row-go {
  flex: none;
  width: 9px;
  height: 9px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.4s var(--ease);
}

@media (min-width: 480px) {
  .row-name {
    flex: none;
    max-width: 70%;
  }

  .row-sub {
    display: block;
  }
}

@media (min-width: 960px) {
  .index {
    grid-template-columns: 1fr 1fr;
    grid-auto-flow: column;
    grid-template-rows: repeat(var(--rows, 6), auto);
    column-gap: 64px;
    border-bottom: 0;
  }

  .row[data-end] {
    border-bottom: 1px solid var(--line);
  }
}

.row:active,
.row:focus-visible,
.pager-link:active,
.pager-link:focus-visible {
  color: #fff;
  outline: none;
}

.row:active::before,
.row:focus-visible::before,
.pager-link:active::before,
.pager-link:focus-visible::before {
  transform: scaleX(1);
}

.row:active .row-meta,
.row:focus-visible .row-meta,
.row:active .row-sub,
.row:focus-visible .row-sub,
.pager-link:active .pager-label,
.pager-link:focus-visible .pager-label {
  color: var(--on-mast-soft);
}

@media (hover: hover) {
  .row:hover,
  .pager-link:hover {
    color: #fff;
  }

  .row:hover::before,
  .pager-link:hover::before {
    transform: scaleX(1);
  }

  .row:hover .row-name {
    transform: translateX(12px);
  }

  .row:hover .row-meta,
  .row:hover .row-sub,
  .pager-link:hover .pager-label {
    color: var(--on-mast-soft);
  }

  .row:hover .row-go {
    transform: translateX(5px) rotate(45deg);
  }
}

/* ---------- Раздел ---------- */

.masthead.compact {
  padding: calc(var(--bar-h) + var(--rail-h) + 30px) 0 44px;
}

.back {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  color: var(--on-mast-soft);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.back-arrow {
  width: 8px;
  height: 8px;
  border-bottom: 2px solid currentColor;
  border-left: 2px solid currentColor;
  transform: rotate(45deg);
}

@media (hover: hover) {
  .back:hover {
    color: #fff;
  }
}

.sec-title {
  margin: 12px 0 0;
  font-family: var(--display);
  font-size: clamp(2.2rem, 9.5vw, 5.25rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.04em;
  overflow-wrap: anywhere;
}

.sec-sub {
  margin: 8px 0 0;
  color: var(--on-mast-soft);
  font-size: 1.1rem;
}

.sec-meta {
  margin: 20px 0 0;
  color: var(--on-mast-soft);
}

.content {
  padding-top: 32px;
  padding-bottom: 24px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.search-wrap {
  position: relative;
  flex: 1 1 240px;
}

.search-wrap::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 17px;
  width: 11px;
  height: 11px;
  margin-top: -8px;
  border: 2px solid var(--muted);
  border-radius: 50%;
  pointer-events: none;
}

.search-wrap::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 29px;
  width: 2px;
  height: 6px;
  margin-top: 2px;
  background: var(--muted);
  border-radius: 2px;
  transform: rotate(-45deg);
  pointer-events: none;
}

.search {
  width: 100%;
  height: 48px;
  padding: 0 16px 0 46px;
  color: var(--text);
  font: inherit;
  font-size: 16px; /* 16px — чтобы iOS не приближал страницу при вводе */
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search::placeholder {
  color: var(--muted);
}

.search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--ring);
}

.tools {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

.btn-quiet {
  height: 44px;
  padding: 0 16px;
  color: var(--text);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.btn-quiet.done {
  color: var(--accent);
  border-color: var(--accent);
}

@media (hover: hover) {
  .btn-quiet:hover {
    color: var(--accent);
    border-color: var(--accent);
  }
}

.seg {
  display: inline-flex;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.seg button {
  width: 48px;
  height: 42px;
  color: var(--text);
  font: inherit;
  font-weight: 600;
  background: none;
  border: 0;
  cursor: pointer;
  transition: color 0.2s, background-color 0.2s;
}

.seg button + button {
  border-left: 1px solid var(--line);
}

.seg button:disabled {
  opacity: 0.35;
  cursor: default;
}

@media (hover: hover) {
  .seg button:not(:disabled):hover {
    color: var(--accent);
    background: var(--field);
  }
}

.entries {
  border-top: 1px solid var(--line);
}

.entry {
  border-bottom: 1px solid var(--line);
}

.entry-h {
  margin: 0;
  font-size: inherit;
}

.entry-btn {
  width: 100%;
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 0;
  color: var(--text);
  font: inherit;
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
}

.entry-btn:focus-visible {
  border-radius: 6px;
}

.entry-title {
  flex: 1;
  min-width: 0;
  font-size: clamp(1.08rem, 2.8vw, 1.3rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  transition: color 0.2s;
}

.entry-time {
  flex: none;
  color: var(--muted);
  font-size: 0.9rem;
}

.pm {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--muted);
  transition: color 0.2s;
}

.pm::before,
.pm::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.35s var(--ease);
}

.pm::before {
  width: 14px;
  height: 2px;
  margin: -1px 0 0 -7px;
}

.pm::after {
  width: 2px;
  height: 14px;
  margin: -7px 0 0 -1px;
}

@media (hover: hover) {
  .entry-btn:hover .entry-title,
  .entry-btn:hover .pm {
    color: var(--accent);
  }
}

.entry.open .entry-title,
.entry.open .pm {
  color: var(--accent);
}

.entry.open .pm::after {
  transform: scaleY(0);
}

.entry-panel {
  display: grid;
  grid-template-rows: 0fr;
  visibility: hidden;
  transition: grid-template-rows 0.35s var(--ease), visibility 0s linear 0.35s;
}

.entry.open .entry-panel {
  grid-template-rows: 1fr;
  visibility: visible;
  transition: grid-template-rows 0.35s var(--ease), visibility 0s;
}

.entry-inner {
  min-height: 0;
  overflow: hidden;
}

.entry-body {
  margin-left: 2px;
  padding: 2px 0 32px 20px;
  border-left: 2px solid var(--accent);
}

@media (min-width: 760px) {
  .entry-body {
    padding-left: 30px;
  }
}

.prose {
  max-width: 66ch;
  color: var(--text);
  font-size: var(--read-size, 1.0625rem);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.prose p {
  margin: 0 0 1.1em;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-actions {
  margin-top: 24px;
}

.empty {
  margin: 0;
  padding: 36px 0;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.entries + .empty {
  border-top: 0;
}

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 56px;
  border-top: 1px solid var(--line);
}

.pager-link {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 26px 12px 30px 0;
  color: var(--text);
  text-decoration: none;
  isolation: isolate;
  transition: color 0.3s;
}

.pager-link.next {
  grid-column: 2;
  align-items: flex-end;
  padding: 26px 0 30px 12px;
  text-align: right;
}

.pager-link.next::before {
  transform-origin: right center;
}

.pager-label {
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 0.3s;
}

.pager-name {
  max-width: 100%;
  overflow: hidden;
  font-family: var(--display);
  font-size: clamp(1.1rem, 3.6vw, 1.7rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- Подвал ---------- */

.site-footer {
  padding: 28px 0 calc(32px + env(safe-area-inset-bottom));
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
}

.foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 0;
  color: var(--text);
  font: inherit;
  font-weight: 500;
  background: none;
  border: 0;
  cursor: pointer;
  transition: color 0.2s;
}

.to-top::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 4px;
  border-top: 2px solid currentColor;
  border-left: 2px solid currentColor;
  transform: rotate(45deg);
}

@media (hover: hover) {
  .to-top:hover {
    color: var(--accent);
  }
}

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