/* =============================================================
   CASE STUDY — shared layout for /work/*.html
   Наследует токены из ../styles.css (--paper, --ink, --cosmic и т.д.)
   Работает в dark-теме по умолчанию (editorial premium feel).
   ============================================================= */

/* Override styles.css's `overflow-x: hidden` on html/body — `hidden`
   creates a scroll context which kills `position: sticky` on .case-header.
   `clip` cuts overflow without creating a scroll container. */
html, body {
  overflow-x: clip;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
}

.display { font-family: var(--display); font-weight: 400; letter-spacing: -0.015em; }
.mono    { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-mute); }

em { font-style: italic; color: var(--cosmic); font-weight: 400; }

/* Inline code внутри текста глав */
.case-chapter__lead code,
.case-chapter__points li code,
.case-chapter__aside code,
.case-tech__card p code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 1px 6px;
  border-radius: 3px;
  background: color-mix(in oklab, var(--paper) 82%, var(--ink) 18%);
  color: var(--cosmic);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* -------------------------------------------------------------
   Header — slim, минимальный: назад + лого + номер кейса
   ------------------------------------------------------------- */
.case-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 20px var(--gutter);
  background: color-mix(in oklab, var(--paper) 85%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}
.case-header__back {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-mute);
  transition: color 0.25s var(--ease);
}
.case-header__back:hover { color: var(--cosmic); }
.case-header__brand {
  justify-self: center;
  font-family: var(--display);
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.case-header__brand em { color: var(--cosmic); }
.case-header__num {
  justify-self: end;
  font-size: 10px;
  color: var(--ink-mute);
}

/* -------------------------------------------------------------
   HERO
   ------------------------------------------------------------- */
.case-hero {
  padding: clamp(80px, 12vw, 160px) var(--gutter) clamp(48px, 6vw, 80px);
  max-width: var(--max);
  margin: 0 auto;
}
.case-hero__inner { max-width: 1100px; }
.case-hero__eyebrow {
  display: block;
  margin-bottom: 32px;
  color: var(--cosmic);
}
.case-hero__title {
  font-size: clamp(48px, 8vw, 120px);
  line-height: 1;
  margin-bottom: 40px;
  text-wrap: balance;
}
.case-hero__lede {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 820px;
  margin-bottom: 56px;
  font-weight: 300;
  text-wrap: pretty;
}
.case-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}
.case-hero__meta-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
.case-hero__meta-row dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 4px;
}
.case-hero__meta-row dd {
  margin: 0;
  font-size: 14px;
  color: var(--ink);
  font-family: var(--mono);
  letter-spacing: 0.06em;
  line-height: 1.55;
}

/* -------------------------------------------------------------
   METRICS — 4 колонки
   ------------------------------------------------------------- */
.case-metrics {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) var(--gutter);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.case-metrics__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 3vw, 48px);
}
.case-metric {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.case-metric__value {
  font-size: clamp(48px, 6vw, 88px);
  line-height: 0.95;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.case-metric__value em {
  font-size: 0.5em;
  color: var(--cosmic);
  font-style: normal;
  vertical-align: super;
  margin-left: 4px;
}
.case-metric__label {
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink-mute);
  max-width: 220px;
}
.case-metrics__note {
  margin-top: 32px;
  font-size: 9px;
  color: var(--ink-mute);
  opacity: 0.6;
}

/* -------------------------------------------------------------
   CHAPTER — универсальный шаблон раздела
   ------------------------------------------------------------- */
.case-chapter {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(80px, 10vw, 140px) var(--gutter);
  border-bottom: 1px solid var(--rule);
}
.case-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 48px;
}
.case-chapter__num {
  font-size: 12px;
  color: var(--cosmic);
}
.case-chapter__title {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  text-wrap: balance;
}
.case-chapter__body {
  max-width: 820px;
}
.case-chapter__lead {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 32px;
  text-wrap: pretty;
}
.case-chapter__aside {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  color: var(--ink-mute);
  font-style: italic;
  font-family: var(--display);
}
.case-chapter__points {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.case-chapter__points li {
  position: relative;
  padding-left: 28px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.case-chapter__points li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--cosmic);
}
.case-chapter__points li strong {
  color: var(--ink);
  font-weight: 500;
}
.case-chapter__points--large li { font-size: 17px; line-height: 1.55; }
.case-chapter__points--stack li { font-family: var(--mono); font-size: 13px; letter-spacing: 0.02em; }
.case-chapter__points--stack li strong { font-family: var(--body); text-transform: none; letter-spacing: 0; }

/* Two-column variant: text слева, figure справа */
.case-chapter--two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 5vw, 88px);
  align-items: start;
}
.case-chapter--two-col .case-chapter__head {
  grid-column: 1 / -1;
}
.case-chapter--two-col .case-chapter__body { max-width: none; }
.case-chapter--two-col .case-figure {
  position: sticky;
  top: 100px;
}
.case-chapter--reverse .case-chapter__body { order: 2; }
.case-chapter--reverse .case-figure        { order: 1; }

/* Wide variant — figure на всю ширину секции */
.case-chapter--wide .case-figure--full { margin-top: 56px; }

/* -------------------------------------------------------------
   FIGURE (media + caption)
   ------------------------------------------------------------- */
.case-figure {
  margin: 0;
}
.case-figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
}
.case-figure--full img {
  border-radius: 0;
}
.case-figure figcaption {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-top: 14px;
  font-size: 10px;
  color: var(--ink-mute);
  line-height: 1.5;
}
.case-figure__num {
  color: var(--cosmic);
  letter-spacing: 0.22em;
}

.case-figure--phone img {
  max-width: 340px;
  margin: 0 auto;
  border-radius: 12px;
}

/* -------------------------------------------------------------
   TOOLS — 4 колонки с группами tools
   ------------------------------------------------------------- */
.case-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 48px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
}
.case-tools__group-label {
  display: block;
  margin-bottom: 12px;
  color: var(--cosmic);
  font-size: 9px;
}
.case-tools__group ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.case-tools__group li {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
  padding-left: 16px;
  position: relative;
}
.case-tools__group li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--cosmic);
  font-family: var(--mono);
}
.case-tools__group li strong {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  font-weight: 500;
  margin-right: 4px;
}

/* -------------------------------------------------------------
   DIALOG PAIR — два телефонных скрина рядом
   ------------------------------------------------------------- */
.case-dialog-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 3vw, 56px);
  margin-top: 56px;
  justify-items: center;
}

/* -------------------------------------------------------------
   GALLERY — 4 telegram скрина
   ------------------------------------------------------------- */
.case-gallery {
  display: grid;
  gap: clamp(24px, 2.5vw, 40px);
  margin-top: 56px;
  justify-items: center;
}
.case-gallery--4 {
  grid-template-columns: repeat(4, 1fr);
}
.case-gallery--3 {
  grid-template-columns: repeat(3, 1fr);
}
.case-gallery--2 {
  grid-template-columns: repeat(2, 1fr);
}

/* -------------------------------------------------------------
   CTA
   ------------------------------------------------------------- */
.case-cta {
  padding: clamp(100px, 14vw, 200px) var(--gutter);
  background: var(--paper-deep);
  text-align: center;
}
.case-cta__inner {
  max-width: 900px;
  margin: 0 auto;
}
.case-cta__title {
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
  margin-bottom: 32px;
  text-wrap: balance;
}
.case-cta__lede {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 auto 56px;
  text-wrap: pretty;
}
.case-cta__links {
  display: flex;
  flex-direction: column;
  gap: 1px;
  max-width: 640px;
  margin: 0 auto 56px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.case-cta__link {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 22px 24px;
  border-bottom: 1px solid var(--rule);
  transition: background 0.25s var(--ease);
  text-align: left;
}
.case-cta__link:last-child { border-bottom: 0; }
.case-cta__link:hover { background: color-mix(in oklab, var(--cosmic) 8%, transparent); }
.case-cta__link .mono { color: var(--ink-mute); font-size: 10px; }
.case-cta__link-val {
  font-family: var(--display);
  font-size: 22px;
  color: var(--ink);
}
.case-cta__link-arrow {
  font-family: var(--mono);
  color: var(--cosmic);
  font-size: 18px;
}
.case-cta__back {
  color: var(--ink-mute);
  transition: color 0.25s var(--ease);
}
.case-cta__back:hover { color: var(--cosmic); }

/* -------------------------------------------------------------
   HERO — static figure (for cases without video)
   ------------------------------------------------------------- */
.case-hero__figure {
  margin-top: 48px;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.case-hero__figure img {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  display: block;
  border-radius: 4px;
  border: 1px solid var(--rule);
  background: color-mix(in oklab, var(--paper) 94%, var(--ink) 6%);
  padding: 20px;
  box-shadow: 0 20px 60px color-mix(in oklab, #000 35%, transparent);
}
.case-hero__figure figcaption {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  font-size: 10px;
  line-height: 1.6;
}
.case-hero__figure figcaption .case-figure__num {
  color: var(--cosmic);
}

/* -------------------------------------------------------------
   TELEGRAM SHOT — реальный скриншот Telegram в рамке
   ------------------------------------------------------------- */
.case-telegram-shot {
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
  background: #17212b; /* telegram dark bg */
  box-shadow: 0 24px 60px color-mix(in oklab, #000 50%, transparent);
  max-width: 520px;
  width: 100%;
  margin: 0 auto;
}
.case-telegram-shot img {
  display: block;
  width: 100%;
  height: auto;
}
.case-telegram-shot--crop {
  max-width: 480px;
}

/* Пара скриншотов «меню / help» в одну строку */
.case-commands-shots {
  margin-top: 32px;
  gap: 32px;
}
.case-commands-shots .case-figure {
  margin: 0;
}

/* -------------------------------------------------------------
   TELEGRAM MOCK — визуализация Telegram-уведомления
   ------------------------------------------------------------- */
.case-telegram-mock {
  background: color-mix(in oklab, var(--paper) 92%, var(--ink) 8%);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 24px 60px color-mix(in oklab, #000 40%, transparent);
  max-width: 440px;
  width: 100%;
  margin: 0 auto;
}
.case-telegram-mock__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklab, var(--paper) 88%, var(--ink) 12%);
  font-size: 10px;
}
.case-telegram-mock__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cosmic);
  flex-shrink: 0;
  box-shadow: 0 0 8px color-mix(in oklab, var(--cosmic) 60%, transparent);
}
.case-telegram-mock__time {
  margin-left: auto;
  color: var(--ink-mute);
  letter-spacing: 0.1em;
}
.case-telegram-mock__body {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
}
.case-telegram-mock__title {
  font-size: 15px;
  line-height: 1.4;
  margin-bottom: 6px;
}
.case-telegram-mock__title strong {
  font-weight: 500;
}
.case-telegram-mock__row {
  margin: 0;
  font-size: 13px;
}
.case-telegram-mock__row .mono {
  margin-right: 6px;
  font-size: 9px;
  color: var(--ink-mute);
}
.case-telegram-mock__row a {
  color: var(--cosmic);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in oklab, var(--cosmic) 50%, transparent);
}
.case-telegram-mock__sep {
  margin: 10px 0 2px;
  font-size: 12px;
  color: var(--ink-mute);
  padding-top: 10px;
  border-top: 1px dashed var(--rule);
}
.case-telegram-mock__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: color-mix(in oklab, var(--ink) 90%, var(--ink-mute) 10%);
}

/* -------------------------------------------------------------
   COMMANDS STRIP — таблица команд Telegram
   ------------------------------------------------------------- */
.case-commands {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}
.case-commands__row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  background: color-mix(in oklab, var(--paper) 96%, var(--ink) 4%);
  transition: background 0.2s var(--ease);
}
.case-commands__row:nth-child(2n) {
  border-right: none;
}
.case-commands__row:nth-last-child(-n+2) {
  border-bottom: none;
}
.case-commands__row:hover {
  background: color-mix(in oklab, var(--paper) 88%, var(--cosmic) 12%);
}
.case-commands__cmd {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--cosmic);
  text-transform: none;
}
.case-commands__desc {
  font-size: 13px;
  color: color-mix(in oklab, var(--ink) 85%, var(--ink-mute) 15%);
  line-height: 1.5;
}

/* -------------------------------------------------------------
   CODE CARD — «файл» с заголовком
   ------------------------------------------------------------- */
.case-code-card {
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  background: color-mix(in oklab, var(--paper) 95%, var(--ink) 5%);
}
.case-code-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklab, var(--paper) 90%, var(--ink) 10%);
  font-size: 10px;
}
.case-code-card__head span:first-child {
  color: var(--cosmic);
}
.case-code--file {
  margin: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: 20px 22px;
}
.case-code--file strong {
  color: var(--cosmic);
  font-weight: 500;
}

/* -------------------------------------------------------------
   DEPLOY — две колонки «локально / VPS»
   ------------------------------------------------------------- */
.case-deploy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.case-deploy__col {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 28px 30px;
  background: color-mix(in oklab, var(--paper) 96%, var(--ink) 4%);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.case-deploy__label {
  font-size: 9px;
  color: var(--cosmic);
}
.case-deploy__title {
  font-size: 24px;
  line-height: 1.2;
  margin: 0;
}
.case-deploy__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.case-deploy__col li {
  font-size: 13px;
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
  color: color-mix(in oklab, var(--ink) 88%, var(--ink-mute) 12%);
}
.case-deploy__col li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--cosmic);
  font-family: var(--mono);
}
.case-deploy__col code {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 2px 6px;
  border-radius: 2px;
  background: color-mix(in oklab, var(--paper) 80%, var(--ink) 20%);
  color: var(--cosmic);
}

/* -------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------- */
.case-footer {
  padding: 32px var(--gutter);
  border-top: 1px solid var(--rule);
  text-align: center;
  color: var(--ink-mute);
}

/* -------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------- */
@media (max-width: 1023px) {
  .case-metrics__list { grid-template-columns: repeat(2, 1fr); }
  .case-chapter--two-col { grid-template-columns: 1fr; }
  .case-chapter--two-col .case-figure { position: static; }
  .case-chapter--reverse .case-chapter__body { order: 0; }
  .case-chapter--reverse .case-figure        { order: 0; }
  .case-tools { grid-template-columns: 1fr; }
  .case-dialog-pair { grid-template-columns: 1fr; }
  .case-gallery--4 { grid-template-columns: repeat(2, 1fr); }
  .case-gallery--3 { grid-template-columns: 1fr; }
  .case-gallery--2 { grid-template-columns: 1fr; }
  .case-hero__meta-row { grid-template-columns: 120px 1fr; gap: 16px; }
  .case-deploy { grid-template-columns: 1fr; }
  .case-commands { grid-template-columns: 1fr; }
  .case-commands__row { border-right: none; }
  .case-commands__row:nth-last-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .case-commands__row:last-child { border-bottom: none; }
}
@media (max-width: 640px) {
  .case-header { grid-template-columns: auto 1fr auto; gap: 12px; padding: 14px var(--gutter); }
  .case-header__back span { display: none; }
  .case-header__brand { font-size: 17px; }
  .case-metrics__list { grid-template-columns: 1fr 1fr; }
  .case-gallery--4 { grid-template-columns: 1fr; }
  .case-hero__meta-row { grid-template-columns: 1fr; gap: 4px; padding: 14px 0; }
  .case-cta__link { grid-template-columns: 1fr; gap: 4px; }
  .case-cta__link-val { font-size: 18px; }
}