/* ==========================================================================
   ATRION V12 — портфолио раздела «Сайты»
   --------------------------------------------------------------------------
   Правило композиции:
   1. ATRION остаётся тёмной графитово-фиолетовой оболочкой.
   2. Одновременно показываем только один проект.
   3. Цвет проекта живёт только внутри большого viewport.
   4. Снаружи оставляем только переключатель, viewport, номер и одну ссылку.
   ========================================================================== */

/* 1. ОБОЛОЧКА ПОРТФОЛИО
   ========================================================================== */
.portfolio {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(72px, 9vh, 118px) var(--gutter) clamp(58px, 8vh, 96px);
  background:
    radial-gradient(
      circle at 78% 14%,
      rgba(110, 77, 255, 0.12),
      transparent 30rem
    ),
    radial-gradient(
      circle at 14% 82%,
      rgba(70, 45, 150, 0.07),
      transparent 34rem
    ),
    var(--night-deep);
}

/* Full-width project viewport */
.portfolio {
  padding-left: 0 !important;
  padding-right: 0 !important;
}
.portfolio__inner {
  width: 100% !important;
  margin-inline: 0 !important;
}

.portfolio::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(2, 1, 6, 0.96) 0%, transparent 18%),
    linear-gradient(0deg, rgba(2, 1, 6, 0.52) 0%, transparent 24%);
}

.portfolio__inner {
  width: min(100%, var(--content-width));
  margin-inline: auto;
}

.portfolio__status {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* 2. ПЕРЕКЛЮЧАТЕЛЬ ПРОЕКТОВ
   ========================================================================== */
.portfolio__tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.project-tab {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(245, 242, 235, 0.14);
  border-radius: 999px;
  background: rgba(22, 19, 31, 0.34);
  color: rgba(245, 242, 235, 0.54);
  font:
    500 12px/1 "DM Sans",
    Arial,
    sans-serif;
  letter-spacing: -0.015em;
  cursor: pointer;
  backdrop-filter: blur(14px) saturate(108%);
  -webkit-backdrop-filter: blur(14px) saturate(108%);
  transition:
    color 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.project-tab:hover {
  color: rgba(245, 242, 235, 0.86);
  border-color: rgba(245, 242, 235, 0.24);
}

.project-tab[aria-selected="true"] {
  color: var(--ink);
  border-color: rgba(245, 242, 235, 0.3);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.055),
      rgba(255, 255, 255, 0.018)
    ),
    rgba(24, 20, 36, 0.66);
}

.project-tab:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* 3. БОЛЬШОЙ VIEWPORT
   ========================================================================== */
.project-panel {
  width: 100%;
}

.project-panel__viewport {
  position: relative;
  height: clamp(540px, 68svh, 790px);
  overflow: hidden;
  border: 1px solid rgba(245, 242, 235, 0.15);
  border-radius: clamp(18px, 2vw, 28px);
  background: #111;
  box-shadow:
    0 34px 90px rgba(0, 0, 0, 0.22),
    0 0 80px rgba(93, 62, 214, 0.04);
  transform: translateY(0);
  opacity: 1;
  transition:
    opacity 180ms ease,
    transform 420ms var(--ease),
    border-color 220ms ease;
}

.project-panel.is-changing .project-panel__viewport {
  opacity: 0.18;
  transform: translateY(8px);
}

.project-panel__footer {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 8px;
}

.project-panel__index {
  color: rgba(245, 242, 235, 0.38);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.project-panel__link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(245, 242, 235, 0.62);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition:
    color 180ms ease,
    transform 220ms var(--ease);
}

.project-panel__link:hover {
  color: var(--ink);
  transform: translateX(3px);
}

.project-panel__link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
  color: var(--ink);
}

/* 4. ОБЩИЕ ЭЛЕМЕНТЫ ВНУТРИ ПРЕВЬЮ
   ========================================================================== */
.site-preview {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.preview-header {
  min-height: 66px;
  display: grid;
  grid-template-columns: minmax(140px, 1fr) auto minmax(140px, 1fr);
  align-items: center;
  gap: 22px;
  padding: 0 clamp(22px, 3.2vw, 50px);
  border-bottom: 1px solid currentColor;
}

.preview-header__brand {
  justify-self: start;
  font-weight: 600;
  line-height: 1;
}

.preview-header nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2vw, 32px);
  font-size: 10px;
  white-space: nowrap;
}

.preview-header__action {
  justify-self: end;
  padding: 10px 13px;
  border: 1px solid currentColor;
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}

.preview-kicker {
  display: block;
  margin-bottom: 24px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.preview-title {
  margin: 0;
  letter-spacing: -0.065em;
}

.preview-copy {
  margin: 24px 0 0;
  max-width: 430px;
  font-size: clamp(14px, 1.2vw, 17px);
  line-height: 1.48;
}

.preview-link {
  display: inline-block;
  margin-top: 28px;
  font-size: 11px;
  font-weight: 600;
}

/* 5. TORQ GARAGE
   ========================================================================== */
.site-preview--torq {
  display: grid;
  grid-template-rows: 66px 1fr;
  background: #ebe6dc;
  color: #12110f;
}

.torq-preview__header {
  border-color: rgba(18, 17, 15, 0.2);
}

.torq-preview__header .preview-header__brand {
  font-family: "Arial Narrow", "Roboto Condensed", "DM Sans", sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.torq-preview__header .preview-header__brand span {
  color: #f04b24;
}

.torq-preview__layout {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 1.14fr);
}

.torq-preview__copy {
  align-self: center;
  padding: clamp(34px, 5vw, 76px);
}

.torq-preview__copy .preview-kicker {
  color: #f04b24;
}

.torq-preview__copy .preview-title {
  max-width: 660px;
  font-family: "Arial Narrow", "Roboto Condensed", "DM Sans", sans-serif;
  font-size: clamp(52px, 6.5vw, 102px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 0.82;
  text-transform: uppercase;
}

.torq-preview__media {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background: #161616;
}

.torq-preview__workshop {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.03) brightness(0.84);
}

.torq-preview__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(18, 17, 15, 0.32), transparent 34%);
  pointer-events: none;
}

.torq-preview__engine {
  position: absolute;
  z-index: 2;
  right: clamp(18px, 4vw, 64px);
  bottom: clamp(20px, 5vh, 62px);
  width: min(44%, 390px);
  max-height: 58%;
  object-fit: contain;
  filter: drop-shadow(0 22px 34px rgba(0, 0, 0, 0.44));
}

/* 6. KONTUR 84
   ========================================================================== */
.site-preview--kontur {
  display: grid;
  grid-template-rows: 66px 1fr;
  background: #efeee9;
  color: #151513;
}

.kontur-preview__header {
  border-color: rgba(21, 21, 19, 0.2);
}

.kontur-preview__layout {
  position: relative;
  min-height: 0;
  overflow: hidden;
}

.kontur-preview__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(21, 21, 19, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 21, 19, 0.09) 1px, transparent 1px);
  background-size: clamp(62px, 7vw, 112px) clamp(62px, 7vw, 112px);
}

.kontur-preview__grid::after {
  content: "";
  position: absolute;
  top: -20%;
  right: 24%;
  width: 2px;
  height: 145%;
  background: #9f4b34;
  transform: rotate(18deg);
  transform-origin: center;
}

.kontur-preview__copy {
  position: absolute;
  z-index: 2;
  left: clamp(34px, 6vw, 96px);
  bottom: clamp(42px, 8vh, 92px);
}

.kontur-preview__copy .preview-title {
  font-family: "Arial Narrow", "Roboto Condensed", "DM Sans", sans-serif;
  font-size: clamp(68px, 8.2vw, 128px);
  font-weight: 600;
  line-height: 0.73;
  text-transform: uppercase;
}

.kontur-preview__copy .preview-title em {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  text-transform: none;
}

.kontur-preview__project {
  position: absolute;
  z-index: 3;
  top: clamp(32px, 5vw, 68px);
  right: clamp(30px, 5vw, 72px);
  width: min(30%, 340px);
  padding: 22px;
  border: 1px solid rgba(21, 21, 19, 0.32);
  background: rgba(239, 238, 233, 0.84);
  backdrop-filter: blur(8px);
}

.kontur-preview__project small {
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.kontur-preview__project strong {
  display: block;
  margin-top: 34px;
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.08;
}

.kontur-preview__project span {
  display: block;
  margin-top: 18px;
  color: rgba(21, 21, 19, 0.62);
  font-size: 11px;
}

/* 7. MOBILE
   ========================================================================== */
@media (max-width: 820px) {
  .portfolio {
    min-height: 100svh;
    align-items: start;
    padding: 58px 20px 44px;
  }

  .portfolio__tabs {
    justify-content: flex-start;
    gap: 8px;
    margin: 0 -20px 18px;
    padding: 0 20px 4px;
    overflow-x: auto;
    scrollbar-width: none;
    scroll-snap-type: x proximity;
  }

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

  .project-tab {
    flex: 0 0 auto;
    scroll-snap-align: start;
    padding-inline: 15px;
  }

  .project-panel__viewport {
    height: clamp(470px, 66svh, 650px);
    border-radius: 18px;
  }

  .project-panel__footer {
    min-height: 48px;
  }

  .preview-header {
    min-height: 56px;
    grid-template-columns: 1fr auto;
    padding: 0 18px;
  }

  .preview-header nav {
    display: none;
  }

  .preview-header__action {
    padding: 9px 10px;
    font-size: 9px;
  }

  .site-preview--torq,
  .site-preview--kontur {
    grid-template-rows: 56px 1fr;
  }

  .torq-preview__layout {
    display: block;
    position: relative;
    min-height: 0;
  }

  .torq-preview__copy {
    position: absolute;
    z-index: 4;
    inset: auto 0 0;
    padding: 30px 24px 34px;
    color: #f5f2eb;
    background: linear-gradient(
      0deg,
      rgba(12, 11, 10, 0.94) 0%,
      rgba(12, 11, 10, 0.62) 56%,
      transparent 100%
    );
  }

  .torq-preview__copy .preview-kicker {
    margin-bottom: 16px;
  }

  .torq-preview__copy .preview-title {
    max-width: 11ch;
    font-size: clamp(38px, 11vw, 62px);
  }

  .torq-preview__copy .preview-copy,
  .torq-preview__copy .preview-link {
    display: none;
  }

  .torq-preview__media {
    position: absolute;
    inset: 0;
  }

  .torq-preview__engine {
    width: min(48%, 230px);
    right: 16px;
    bottom: 24%;
  }

  .kontur-preview__copy {
    left: 24px;
    bottom: 36px;
  }

  .kontur-preview__copy .preview-kicker {
    margin-bottom: 16px;
  }

  .kontur-preview__copy .preview-title {
    font-size: clamp(48px, 14.5vw, 82px);
  }

  .kontur-preview__project {
    top: 22px;
    right: 20px;
    width: min(48%, 210px);
    padding: 15px;
  }

  .kontur-preview__project strong {
    margin-top: 24px;
    font-size: 15px;
  }

  .kontur-preview__project span {
    margin-top: 12px;
    font-size: 9px;
  }

}

@media (max-width: 430px) {
  .project-panel__viewport {
    height: clamp(450px, 64svh, 590px);
  }

  .project-panel__index {
    font-size: 10px;
  }

  .project-panel__link {
    font-size: 13px;
  }
}

/* 8. REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .project-panel__viewport,
  .project-tab,
  .project-panel__link {
    transition: none;
  }
}