/* ============================================================
   «Зимняя дача» — базовая тема: токены, бархатный занавес,
   минимальная шапка, плавающие подсказки
   ============================================================ */

@import url('/fonts/playfair.css');

:root {
  --gold: #d4af37;
  --gold-soft: #e8cf8a;
  --gold-deep: #8a6d2b;
  --bronze: #a8843f;
  --bronze-deep: #6b4f1f;
  --wine-1: #5a0a14;
  --wine-2: #33060d;
  --wine-3: #150205;
  --ink: #0d0103;
  --cream: #f6efe2;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --radius-pill: 999px;
  --shadow-deep: 0 30px 60px rgba(0, 0, 0, 0.6);
}

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

html {
  -webkit-text-size-adjust: 100%;
  /* Декоративные складки занавеса выходят за края экрана. Обрезаем их здесь,
     иначе на телефоне страница становится шире экрана и «уезжает». */
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh; /* динамическая высота: учитывает адресную строку браузера на телефоне */
  background: var(--wine-3);
  color: var(--cream);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page--stage {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: 3px;
}

.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;
}

/* ------------------------------ бархатный занавес ------------------------------ */

.curtain {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: radial-gradient(132% 92% at 50% 40%, #6a0d19 0%, #3a070f 38%, #190205 70%, #060101 100%);
}

/* Складки: намеренно несимметричные — у каждой свой шаг и своя ширина,
   как у настоящего тяжёлого бархата, а не у обоев. */
.curtain__fold {
  position: absolute;
  inset: -7% -5%;
  background:
    /* крупные неправильные складки */
    linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.82) 0%,
      rgba(0, 0, 0, 0.34) 5%,
      rgba(0, 0, 0, 0.68) 11%,
      rgba(0, 0, 0, 0.2) 17%,
      rgba(0, 0, 0, 0.58) 24%,
      rgba(0, 0, 0, 0.9) 31%,
      rgba(0, 0, 0, 0.26) 37%,
      rgba(0, 0, 0, 0.52) 44%,
      rgba(0, 0, 0, 0.8) 52%,
      rgba(0, 0, 0, 0.18) 58%,
      rgba(0, 0, 0, 0.62) 65%,
      rgba(0, 0, 0, 0.92) 72%,
      rgba(0, 0, 0, 0.3) 79%,
      rgba(0, 0, 0, 0.54) 86%,
      rgba(0, 0, 0, 0.86) 94%,
      rgba(0, 0, 0, 0.64) 100%
    ),
    /* мелкая тканевая рябь под своими углами */
    repeating-linear-gradient(
      88deg,
      rgba(0, 0, 0, 0.2) 0 26px,
      rgba(255, 186, 164, 0.09) 26px 44px,
      rgba(0, 0, 0, 0.16) 44px 78px
    ),
    repeating-linear-gradient(94deg, rgba(255, 208, 188, 0.07) 0 9px, rgba(0, 0, 0, 0.11) 9px 19px);
  filter: blur(3px);
  opacity: 0.96;
  transform-origin: 50% 0;
  /* дыхание света + медленное колыхание, как от сквозняка за занавесом */
  animation: curtain-breathe 18s ease-in-out infinite, fold-sway 21s ease-in-out infinite;
  will-change: transform;
}

/* второй, дальний слой складок: своя частота и своя скорость — даёт объём */
.curtain__fold--back {
  inset: -9% -7%;
  background: repeating-linear-gradient(
    91deg,
    rgba(0, 0, 0, 0.34) 0 38px,
    rgba(255, 186, 164, 0.07) 38px 72px,
    rgba(0, 0, 0, 0.26) 72px 124px
  );
  filter: blur(6px);
  opacity: 0.6;
  animation: curtain-breathe 26s ease-in-out infinite reverse, fold-sway-back 34s ease-in-out infinite;
}

/* бархатная зернистость: ворс в двух масштабах */
.curtain::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(255, 238, 222, 0.075) 0.6px, rgba(0, 0, 0, 0) 0.85px),
    radial-gradient(rgba(0, 0, 0, 0.11) 0.6px, rgba(0, 0, 0, 0) 0.85px);
  background-size: 3px 3px, 4px 4px;
  background-position: 0 0, 1px 2px;
  opacity: 0.62;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.curtain__sheen {
  position: absolute;
  inset: 0;
  background:
    /* ворс ловит свет сверху */
    linear-gradient(180deg, rgba(255, 214, 190, 0.07), rgba(0, 0, 0, 0) 34%),
    radial-gradient(56% 42% at 50% 40%, rgba(255, 176, 132, 0.16), rgba(255, 120, 90, 0) 70%),
    radial-gradient(82% 52% at 50% 0%, rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0) 66%),
    radial-gradient(132% 64% at 50% 104%, rgba(0, 0, 0, 0.88), rgba(0, 0, 0, 0) 62%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0) 26%, rgba(0, 0, 0, 0) 74%, rgba(0, 0, 0, 0.82));
  animation: sheen-drift 27s ease-in-out infinite;
}

/* Волна по занавесу от движения воздуха при наборе номера */
.curtain__gust {
  position: absolute;
  inset: -12% -25%;
  background: linear-gradient(
    104deg,
    rgba(255, 255, 255, 0) 18%,
    rgba(255, 226, 200, 0.07) 38%,
    rgba(255, 246, 234, 0.17) 50%,
    rgba(255, 226, 200, 0.07) 62%,
    rgba(255, 255, 255, 0) 82%
  );
  filter: blur(8px);
  opacity: 0;
  pointer-events: none;
}

.curtain.is-gusting .curtain__gust {
  animation: gust-sweep 1.7s cubic-bezier(0.2, 0.6, 0.3, 1);
}

.curtain.is-gusting .curtain__fold {
  animation: curtain-breathe 18s ease-in-out infinite, fold-sway 21s ease-in-out infinite,
    fold-ripple 1.7s cubic-bezier(0.2, 0.6, 0.3, 1);
}

.curtain.is-gusting .curtain__fold--back {
  animation: curtain-breathe 26s ease-in-out infinite reverse, fold-sway-back 34s ease-in-out infinite,
    fold-ripple 1.9s cubic-bezier(0.2, 0.6, 0.3, 1);
}

/* Живое колыхание тяжёлой ткани: несимметричные кадры, лёгкий перекос. */
@keyframes fold-sway {
  0% {
    transform: translateX(0) skewX(0deg) scaleX(1);
  }
  18% {
    transform: translateX(0.55%) skewX(-0.35deg) scaleX(1.008);
  }
  37% {
    transform: translateX(-0.35%) skewX(0.22deg) scaleX(0.996);
  }
  58% {
    transform: translateX(0.8%) skewX(-0.5deg) scaleX(1.012);
  }
  76% {
    transform: translateX(-0.2%) skewX(0.3deg) scaleX(0.998);
  }
  100% {
    transform: translateX(0) skewX(0deg) scaleX(1);
  }
}

@keyframes fold-sway-back {
  0% {
    transform: translateX(0) skewX(0deg) scaleX(1);
  }
  22% {
    transform: translateX(-0.9%) skewX(0.4deg) scaleX(1.01);
  }
  45% {
    transform: translateX(0.5%) skewX(-0.28deg) scaleX(0.994);
  }
  68% {
    transform: translateX(-0.65%) skewX(0.36deg) scaleX(1.006);
  }
  100% {
    transform: translateX(0) skewX(0deg) scaleX(1);
  }
}

/* свет по бархату тоже смещается, как будто воздух гуляет */
@keyframes sheen-drift {
  0%,
  100% {
    opacity: 0.92;
    transform: translateX(0) scale(1);
  }
  33% {
    opacity: 1;
    transform: translateX(-0.6%) scale(1.02);
  }
  66% {
    opacity: 0.87;
    transform: translateX(0.7%) scale(1.01);
  }
}

@keyframes gust-sweep {
  0% {
    opacity: 0;
    transform: translateX(-38%);
  }
  22% {
    opacity: 0.95;
  }
  100% {
    opacity: 0;
    transform: translateX(38%);
  }
}

@keyframes fold-ripple {
  0% {
    transform: translateX(0) scaleX(1) skewX(0deg);
  }
  28% {
    transform: translateX(1.1%) scaleX(1.015) skewX(-0.35deg);
  }
  55% {
    transform: translateX(-0.7%) scaleX(0.992) skewX(0.25deg);
  }
  100% {
    transform: translateX(0) scaleX(1) skewX(0deg);
  }
}

/* предупреждение, если страницу открыли файлом, а не через сервер */
.file-warning {
  position: fixed;
  left: 50%;
  bottom: clamp(14px, 3vh, 32px);
  z-index: 40;
  width: min(92vw, 640px);
  transform: translateX(-50%);
  padding: 14px 20px;
  border: 1px solid rgba(255, 190, 120, 0.55);
  border-radius: 16px;
  background: rgba(30, 4, 8, 0.94);
  color: #ffd9a8;
  font-size: 0.86rem;
  line-height: 1.5;
  text-align: center;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
}

.file-warning code {
  padding: 1px 6px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.45);
  color: #ffe6b8;
}

@keyframes curtain-breathe {
  0%,
  100% {
    opacity: 0.88;
  }
  50% {
    opacity: 0.98;
  }
}

/* ------------------------------ каркас ------------------------------ */

.stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(6px, 1.2vh, 14px);
  min-height: 100vh;
  min-height: 100dvh; /* учитывает адресную строку браузера */
  padding: clamp(14px, 2.4vh, 28px) clamp(18px, 3vw, 56px);
}

.stage--inner {
  grid-template-rows: auto 1fr;
  overflow-y: auto;
}

/* аппарат по центру сцены, без подписей под ним */
.stage__main {
  display: grid;
  place-items: center;
  min-height: 0;
}

/* ------------------------------ шапка ------------------------------ */

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

.topbar--minimal {
  justify-content: space-between;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.6vw, 1.5rem);
  letter-spacing: 0.06em;
  color: #f8f2e7;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.65);
}

.brand__tagline {
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(232, 207, 138, 0.72);
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 22px);
}

.lang {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 7px 15px;
  border: 1px solid rgba(232, 207, 138, 0.4);
  border-radius: var(--radius-pill);
  background: rgba(14, 2, 4, 0.5);
  backdrop-filter: blur(4px);
}

.lang__sep {
  color: rgba(232, 207, 138, 0.45);
  font-size: 0.8rem;
}

.lang__link {
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: rgba(246, 239, 226, 0.55);
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.lang__link:hover {
  color: #fff;
}

.lang__link.is-active {
  color: #fff;
  font-weight: 600;
  text-shadow: 0 0 12px rgba(255, 220, 150, 0.75);
}

/* ------------------------------ кнопки ------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid rgba(232, 207, 138, 0.5);
  border-radius: var(--radius-pill);
  padding: 10px 20px;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: linear-gradient(180deg, rgba(60, 12, 14, 0.85), rgba(22, 4, 6, 0.92));
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 225, 160, 0.22);
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease, color 0.22s ease, background 0.22s ease;
}

.btn:hover {
  transform: translateY(-1px);
  color: #fff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 235, 190, 0.4);
}

.btn--pill {
  padding: 9px 20px;
  font-size: 0.74rem;
}

.btn--gold {
  border-color: rgba(255, 226, 158, 0.85);
  background: linear-gradient(180deg, #e6cf8f, #b8933c 58%, #8a6a22);
  color: #2a1a04;
  font-weight: 700;
  text-shadow: 0 1px 0 rgba(255, 245, 215, 0.5);
}

.btn--gold:hover {
  color: #1c1002;
  box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35), inset 0 1px 0 rgba(255, 250, 230, 0.7);
}

.btn--ghost {
  background: rgba(18, 2, 4, 0.35);
}

.btn--danger {
  border-color: rgba(255, 150, 130, 0.55);
  color: #ffcbbd;
}

/* ------------------------------ плавающие подсказки ------------------------------ */

.status-layer {
  position: fixed;
  top: clamp(56px, 8vh, 88px);
  left: 50%;
  z-index: 6;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: min(92vw, 720px);
  transform: translateX(-50%);
  pointer-events: none;
}

.status-layer > * {
  pointer-events: auto;
}

.notice {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 70ch;
  padding: 9px 20px;
  border: 1px solid rgba(232, 207, 138, 0.35);
  border-radius: var(--radius-pill);
  background: rgba(18, 3, 5, 0.82);
  backdrop-filter: blur(6px);
  font-size: 0.82rem;
  color: var(--gold-soft);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.5);
  transition: opacity 0.6s ease;
}

.notice--warn {
  border-color: rgba(255, 190, 120, 0.5);
  color: #ffd9a8;
}

.notice__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.notice.is-fading {
  opacity: 0;
}

.toast {
  margin: 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.is-visible {
  padding: 9px 20px;
  border-color: rgba(232, 207, 138, 0.3);
  background: rgba(18, 3, 5, 0.82);
  backdrop-filter: blur(6px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.5);
  opacity: 1;
  transform: none;
}

.toast[data-tone='error'] {
  color: #ffb4a2;
  border-color: rgba(255, 150, 130, 0.4);
}

.toast[data-tone='ok'] {
  color: #cdf0bb;
  border-color: rgba(180, 240, 160, 0.35);
}

/* ------------------------------ чип сессии ------------------------------ */

.session-chip {
  position: fixed;
  left: clamp(14px, 2.6vw, 34px);
  bottom: clamp(128px, 12vh, 152px);
  bottom: clamp(128px, 12dvh, 152px); /* поднят над кнопками «отзыв» и «сообщить» слева внизу */
  z-index: 6;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 7px 8px 7px 16px;
  border: 1px solid rgba(232, 207, 138, 0.36);
  border-radius: var(--radius-pill);
  background: rgba(16, 3, 5, 0.72);
  backdrop-filter: blur(6px);
  font-size: 0.78rem;
  color: rgba(246, 239, 226, 0.85);
}

.session-chip[hidden] {
  display: none;
}

.session-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8fe08a;
  box-shadow: 0 0 10px #8fe08a;
}

.session-chip strong {
  color: var(--gold-soft);
}

.session-chip__form {
  margin: 0;
}

.session-chip__link,
.session-chip__btn {
  padding: 6px 14px;
  border: 1px solid rgba(232, 207, 138, 0.4);
  border-radius: var(--radius-pill);
  background: transparent;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.session-chip__link:hover,
.session-chip__btn:hover {
  background: rgba(232, 207, 138, 0.16);
  color: #fff;
}

/* ------------------------------ звук и подсказка прокрутки ------------------------------ */

.sound-toggle {
  position: fixed;
  right: clamp(16px, 2.6vw, 40px);
  bottom: clamp(16px, 2.6vh, 32px);
  z-index: 6;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(232, 207, 138, 0.36);
  border-radius: 50%;
  background: rgba(16, 3, 5, 0.66);
  backdrop-filter: blur(6px);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.sound-toggle:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 226, 158, 0.8);
}

.sound-toggle.is-muted {
  opacity: 0.62;
}

.scroll-hint {
  display: flex;
  justify-content: center;
  padding-bottom: 2px;
}

.scroll-hint__pill {
  width: 92px;
  height: 13px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, rgba(232, 207, 138, 0.3), rgba(232, 207, 138, 0.05));
  box-shadow: inset 0 1px 0 rgba(255, 240, 200, 0.3);
}

/* ------------------------------ окно ввода кода ------------------------------ */

.code-gate {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
}

.code-gate[hidden] {
  display: none;
}

.code-gate__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 0, 1, 0.72);
  backdrop-filter: blur(4px);
}

.code-gate__card {
  position: relative;
  z-index: 1;
  width: min(92vw, 400px);
  padding: 24px 22px;
  border: 1px solid rgba(232, 207, 138, 0.4);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(60, 12, 18, 0.96), rgba(20, 3, 6, 0.98));
  box-shadow: var(--shadow-deep), inset 0 1px 0 rgba(255, 225, 160, 0.16);
  text-align: center;
}

.code-gate__title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
}

.code-gate__hint {
  margin: 0 0 16px;
  font-size: 0.84rem;
  line-height: 1.45;
  color: rgba(246, 239, 226, 0.72);
}

.code-gate__input {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid rgba(232, 207, 138, 0.4);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.32);
  color: var(--cream);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 1.5rem;
  letter-spacing: 0.35em;
  text-align: center;
  outline: none;
}

.code-gate__input:focus {
  border-color: rgba(255, 226, 158, 0.85);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.code-gate__error {
  margin: 12px 0 0;
  font-size: 0.82rem;
  color: #ffb4a2;
}

.code-gate__error[hidden] {
  display: none;
}

.code-gate__actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.code-gate__btn {
  flex: 1;
  padding: 11px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(232, 207, 138, 0.4);
  background: rgba(16, 3, 5, 0.5);
  color: var(--cream);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.code-gate__btn:hover {
  transform: translateY(-1px);
  color: #fff;
}

.code-gate__btn--submit {
  border-color: rgba(255, 226, 158, 0.85);
  background: linear-gradient(180deg, #e6cf8f, #b8933c 58%, #8a6a22);
  color: #2a1a04;
  font-weight: 700;
  text-shadow: 0 1px 0 rgba(255, 245, 215, 0.5);
}

.code-gate__btn--submit:hover {
  color: #1c1002;
  box-shadow: 0 12px 30px rgba(212, 175, 55, 0.35);
}

.code-gate__btn--cancel {
  background: rgba(18, 2, 4, 0.35);
}

/* ------------------------------ адаптив ------------------------------ */

@media (max-width: 720px) {
  .brand__tagline {
    font-size: 0.58rem;
    letter-spacing: 0.16em;
  }

  .btn--pill {
    padding: 8px 14px;
    font-size: 0.68rem;
  }

  .session-chip {
    gap: 8px;
    padding: 6px 6px 6px 12px;
    font-size: 0.72rem;
  }

  .session-chip__link {
    display: none;
  }
}

@media (max-height: 640px) {
  .page--stage {
    overflow-y: auto;
  }

  .scroll-hint {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .curtain__fold,
  .curtain__fold--back,
  .curtain__sheen {
    animation: none;
  }

  .btn,
  .sound-toggle,
  .toast {
    transition: none;
  }
}