/* ============================================================================
   SADER — SECTION: ECOSYSTEM  (#brands)  · DARK world (data-theme="dark")
   Editorial platform index with modal details.
   All properties logical (no left/right) so RTL flips for free.
   ============================================================================ */

/* The dark section ground gets a faint brass vignette top-start to give the
   espresso depth without a flat fill. Subtle — barely there. */
.s-ecosystem {
  position: relative;
  overflow: hidden;
  background-image:
    radial-gradient(
      120% 90% at 0% 0%,
      rgba(255, 255, 255, 0.06) 0%,
      transparent 55%);
  background-repeat: no-repeat;
}

/* ----------------------------------------------------------------------------
   "Selected word" — the keyword reads as if a cursor has dragged across it:
   a sharp-cornered, inverted highlight box (background = the text colour, the
   word itself flipped to the section ground). A faint caret blinks at the end
   to sell the "someone is selecting this" feel. Pure monochrome, RTL-safe.
   -------------------------------------------------------------------------- */
.s-ecosystem__select {
  padding-inline: 0.18em;
  background-color: var(--text);   /* white on the dark ground */
  color: var(--bg);                /* word flips to near-black  */
  border-radius: 0;                /* squared selection box     */
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* Full-width hairline rule under the section head — animates its width in. */
.s-ecosystem__rule {
  display: none;
}

/* ---- The expanding platform accordion --------------------------------- */
.s-ecosystem__grid {
  counter-reset: platform;
  display: flex;
  align-items: stretch;
  min-block-size: clamp(34rem, 68vh, 46rem);
  margin-block-start: clamp(var(--space-8), 5vw, var(--space-10));
  overflow: hidden;
  border-block: 1px solid rgba(255, 255, 255, 0.18);
}

.s-ecosystem__item {
  counter-increment: platform;
  display: flex;
  /* Fixed rail width (basis) for every item; only flex-grow changes when a
     rail opens. flex-grow is a number, so — unlike a basis of `auto` — it can
     be transitioned, letting the rail slide open/closed instead of snapping. */
  flex: 0 0 5.25rem;
  min-inline-size: 0;
  overflow: hidden;
  border-inline-start: 1px solid rgba(255, 255, 255, 0.18);
  transition: flex-grow 900ms cubic-bezier(0.22, 1, 0.36, 1);
}
.s-ecosystem__item:first-child { border-inline-start: 0; }
.s-ecosystem__item:last-child { border-inline-end: 1px solid rgba(255, 255, 255, 0.18); }
.s-ecosystem__item.is-open { flex-grow: 1; }

/* ==========================================================================
   The closed item is a narrow vertical rail. The open item retains that rail
   and reveals a flexible content canvas beside it, matching the interaction
   model used by Diageo while keeping SADER's monochrome editorial language.
   ========================================================================== */
.brand-card {
  position: relative;
  display: flex;
  align-items: stretch;
  inline-size: 100%;
  min-inline-size: 0;
  background: transparent;
}
.brand-card__trigger {
  position: relative;
  z-index: 2;
  flex: 0 0 5.25rem;
  inline-size: 5.25rem;
  display: grid;
  place-items: center;
  padding-block: var(--space-6);
  padding-inline: 0;
  border: 0;
  background-color: transparent;
  color: var(--text-on-dark-soft);
  cursor: pointer;
  transition: color var(--dur-base) var(--ease),
              background-color var(--dur-base) var(--ease);
}
.brand-card__trigger-title {
  writing-mode: vertical-rl;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  transform-origin: center;
  transition: transform var(--dur-base) var(--ease);
}
.brand-card__trigger:hover,
.brand-card__trigger:focus-visible,
.s-ecosystem__item.is-open .brand-card__trigger {
  background-color: rgba(255, 255, 255, 0.16);
  color: var(--text);
}
.brand-card__trigger:hover .brand-card__trigger-title,
.brand-card__trigger:focus-visible .brand-card__trigger-title {
  transform: scale(1.3);
}
.brand-card__trigger:focus-visible {
  outline: 1px solid rgba(255, 255, 255, 0.65);
  outline-offset: -4px;
}
.brand-card__trigger-icon {
  position: absolute;
  inset-block-end: var(--space-5);
  inset-inline-start: 50%;
  inline-size: 2.5rem;
  block-size: 2.5rem;
  transform: translateX(-50%);
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 50%;
  transition: opacity var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease);
}
.brand-card__trigger-icon::before {
  content: "";
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 50%;
  inline-size: 0.45rem;
  block-size: 0.45rem;
  border-block-start: 1px solid currentColor;
  border-inline-end: 1px solid currentColor;
  transform: translate(-65%, -50%) rotate(45deg);
}
[dir="rtl"] .brand-card__trigger-icon { transform: translateX(50%); }
[dir="rtl"] .brand-card__trigger-icon::before { transform: translate(65%, -50%) rotate(-135deg); }
.s-ecosystem__item.is-open .brand-card__trigger-icon {
  opacity: 0;
}

/* ---- Expandable content canvas ---------------------------------------- */
.brand-card__panel {
  flex: 1 1 auto;
  min-inline-size: 0;
  overflow: hidden;
  visibility: hidden;
  opacity: 0;
  background:
    radial-gradient(75% 90% at 18% 50%, rgba(255, 255, 255, 0.08), transparent 68%),
    rgba(255, 255, 255, 0.015);
  transition: opacity 350ms ease 100ms,
              visibility 0s linear 450ms;
}
.s-ecosystem__item.is-open .brand-card__panel {
  visibility: visible;
  opacity: 1;
  transition: opacity 500ms ease 350ms,
              visibility 0s linear 0s;
}
.brand-card__panel-inner {
  display: grid;
  grid-template-columns: minmax(10rem, 0.75fr) minmax(18rem, 1.25fr);
  align-items: center;
  gap: clamp(var(--space-7), 5vw, var(--space-10));
  min-inline-size: min(42rem, 78vw);
  block-size: 100%;
  padding: clamp(var(--space-7), 5vw, var(--space-10));
}

/* ----------------------------------------------------------------------------
   Brand-tinted panel grounds. Each open panel takes a DARK wash that nods to
   its logo colour — bordeaux (SADERLEX), red (LAITRON), grey (YSF), purple
   (ALEKSY) — kept near-black and on-theme: the hue glows from the top-start
   corner and falls back to the section ground, never a flat saturated fill. */
#platform-panel-saderlex .brand-card__panel-inner {
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(140, 30, 55, 0.30) 0%, transparent 58%),
    linear-gradient(135deg, #1a0d12 0%, #120b0d 60%, var(--bg) 100%);
}
#platform-panel-laitron .brand-card__panel-inner {
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(190, 35, 38, 0.30) 0%, transparent 58%),
    linear-gradient(135deg, #1d0e0e 0%, #140a0a 60%, var(--bg) 100%);
}
#platform-panel-ysf .brand-card__panel-inner {
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(190, 192, 198, 0.16) 0%, transparent 58%),
    linear-gradient(135deg, #1c1c1e 0%, #161617 60%, var(--bg) 100%);
}
#platform-panel-aleksy .brand-card__panel-inner {
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(120, 70, 180, 0.30) 0%, transparent 58%),
    linear-gradient(135deg, #160f1f 0%, #100b16 60%, var(--bg) 100%);
}
.brand-card__media {
  display: grid;
  place-items: center;
  min-inline-size: 0;
}
.brand-card__logo-img {
  display: block;
  max-inline-size: min(100%, 13rem);
  max-block-size: 8rem;
  object-fit: contain;
}
.brand-card__panel#platform-panel-ysf .brand-card__logo-img {
  max-block-size: 10rem;
  filter: grayscale(1) contrast(0.9) brightness(1.45);
}
/* ALEKSY mark is a colour logo with a dark tagline — float it on a clean
   white chip so it stays legible against the dark panel. */
.brand-card__logo-img--aleksy {
  max-inline-size: min(100%, 15rem);
  max-block-size: 7rem;
  padding: var(--space-4) var(--space-5);
  background: #fff;
  border-radius: var(--radius-md, 0.75rem);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}
.brand-card__logo-text {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.3rem + 2vw, 3.5rem);
  font-weight: var(--fw-light);
  letter-spacing: 0.06em;
  color: var(--text);
}

.brand-card__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-inline-size: 0;
  max-inline-size: 38rem;
}
.brand-card__kicker {
  margin-block-end: var(--space-4);
  color: var(--text-on-dark-faint);
}
.brand-card__wordmark {
  margin-block-end: var(--space-5);
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 2rem + 2vw, 4.5rem);
  font-weight: var(--fw-light);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--text);
}
.brand-card__wordmark--compound {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.brand-card__wordmark-sub {
  margin-block-start: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  font-weight: var(--fw-regular);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-on-dark-soft);
}
.brand-card__descriptor {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text-muted);
  text-align: justify;
  text-justify: inter-word;
}
[dir="rtl"] .brand-card__descriptor { line-height: var(--lh-body-ar); }

.brand-card__read-more {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  margin-block-start: var(--space-6);
  padding: 0;
  border: 0;
  background: none;
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semi);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--accent);
  cursor: pointer;
}
.brand-card__read-more::after {
  content: "\2197";
  display: inline-block;
  margin-inline-start: var(--space-2);
  font-size: 0.9em;
  transition: transform var(--dur-base) var(--ease);
}
.brand-card__read-more:hover::after,
.brand-card__read-more:focus-visible::after {
  transform: translate(2px, -2px);
}

/* ---- Modal -------------------------------------------------------------- */
.has-brand-modal { overflow: hidden; }
.brand-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--gutter);
}
.brand-modal[hidden] { display: none; }
.brand-modal__backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.8);
}
.brand-modal__panel {
  position: relative;
  z-index: 1;
  inline-size: min(880px, 100%);
  max-block-size: min(78vh, 760px);
  overflow: auto;
  padding: clamp(var(--space-6), 4vw, var(--space-9));
  background-color: var(--espresso, #161616);
  color: var(--text-on-dark);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xs);
  box-shadow: 0 32px 96px rgba(0, 0, 0, 0.7);
}
.brand-modal__close {
  position: absolute;
  inset-block-start: var(--space-4);
  inset-inline-end: var(--space-4);
  inline-size: 2.75rem;
  block-size: 2.75rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-pill);
  background-color: transparent;
  color: var(--text-on-dark-soft);
  transition: border-color var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
}
.brand-modal__close:hover,
.brand-modal__close:focus-visible {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--text-on-dark);
}
.brand-modal__close-mark {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 50%;
  inline-size: 1rem;
  block-size: 1rem;
  transform: translate(-50%, -50%);
}
[dir="rtl"] .brand-modal__close-mark {
  transform: translate(50%, -50%);
}
.brand-modal__close-mark::before,
.brand-modal__close-mark::after {
  content: "";
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 0;
  inline-size: 100%;
  block-size: 1px;
  background-color: currentColor;
}
.brand-modal__close-mark::before { transform: rotate(45deg); }
.brand-modal__close-mark::after { transform: rotate(-45deg); }
.brand-modal__kicker {
  color: var(--text-on-dark-faint);
  margin-block-end: var(--space-4);
}
.brand-modal__title {
  font-size: var(--fs-h1);
  color: var(--text-on-dark);
  margin-block-end: var(--space-6);
}
.brand-modal__body {
  display: grid;
  gap: var(--space-4);
  color: var(--text-on-dark-soft);
}
.brand-modal__body p {
  max-inline-size: 72ch;
  line-height: var(--lh-body);
  text-align: justify;
  text-justify: inter-word;
}
[dir="rtl"] .brand-modal__body p {
  line-height: var(--lh-body-ar);
}
.brand-modal__visit {
  margin-block-start: var(--space-7);
}

/* ==========================================================================
   DESKTOP — fit the whole section inside a single viewport, and choreograph
   the switch between platforms the way Diageo does: the rail widens, then the
   content rises and fades in on a short stagger.
   ========================================================================== */
@media (min-width: 1024px) {
  .s-ecosystem {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-block-size: 100vh;
    min-block-size: 100svh;
    padding-block: clamp(2.75rem, 7vh, 5rem);
  }
  .s-ecosystem > .container {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    min-block-size: 0;
  }
  .s-ecosystem .section-head {
    margin-block-end: clamp(var(--space-6), 3.5vh, var(--space-9));
  }
  .s-ecosystem__grid {
    flex: 1 1 auto;
    min-block-size: 0;
    max-block-size: 40rem;
    margin-block-start: 0;
  }

  /* --- Switch choreography ------------------------------------------- *
     Content of every rail rests hidden + nudged down; the open rail lifts
     it to its resting state on a stagger that begins once the rail has
     finished widening. Closing reverts to the short base transition, so the
     fade-out happens under cover of the panel's own opacity fade. */
  .brand-card__media,
  .brand-card__kicker,
  .brand-card__wordmark,
  .brand-card__descriptor,
  .brand-card__read-more {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 300ms ease, transform 300ms ease;
  }
  /* The media drifts in laterally from the leading edge. */
  .brand-card__media { transform: translateX(-1.75rem); }
  [dir="rtl"] .brand-card__media { transform: translateX(1.75rem); }

  .s-ecosystem__item.is-open .brand-card__media,
  .s-ecosystem__item.is-open .brand-card__kicker,
  .s-ecosystem__item.is-open .brand-card__wordmark,
  .s-ecosystem__item.is-open .brand-card__descriptor,
  .s-ecosystem__item.is-open .brand-card__read-more {
    opacity: 1;
    transform: none;
    transition: opacity 320ms ease, transform 400ms cubic-bezier(0.22, 1, 0.36, 1);
  }
  .s-ecosystem__item.is-open .brand-card__media      { transition-delay: 100ms; }
  .s-ecosystem__item.is-open .brand-card__kicker     { transition-delay: 140ms; }
  .s-ecosystem__item.is-open .brand-card__wordmark   { transition-delay: 180ms; }
  .s-ecosystem__item.is-open .brand-card__descriptor { transition-delay: 220ms; }
  .s-ecosystem__item.is-open .brand-card__read-more  { transition-delay: 260ms; }
}

/* ---- Responsive -------------------------------------------------------- */
@media (max-width: 1023px) {
  .s-ecosystem__grid {
    display: block;
    min-block-size: 0;
  }
  .s-ecosystem__item {
    display: block;
    overflow: visible;
    border-inline: 0;
    border-block-end: 1px solid rgba(255, 255, 255, 0.18);
    transition: none;
  }
  .s-ecosystem__item:last-child { border-inline-end: 0; }
  .brand-card {
    display: block;
  }
  .brand-card__trigger {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    inline-size: 100%;
    min-block-size: 4.75rem;
    padding-block: var(--space-5);
    padding-inline: 0;
    text-align: center;
  }
  .brand-card__trigger-title {
    flex: 1;
    writing-mode: horizontal-tb;
    margin: 0;
    padding: 0;
    text-align: center;
  }
  .brand-card__trigger-icon {
    position: relative;
    inset: auto;
    flex: 0 0 2.5rem;
    transform: rotate(90deg);
  }
  [dir="rtl"] .brand-card__trigger-icon { transform: rotate(-90deg); }
  .s-ecosystem__item.is-open .brand-card__trigger-icon {
    opacity: 1;
    transform: rotate(-90deg);
  }
  [dir="rtl"] .s-ecosystem__item.is-open .brand-card__trigger-icon { transform: rotate(90deg); }
  .brand-card__panel {
    display: none;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    transition: none;
  }
  .s-ecosystem__item.is-open .brand-card__panel {
    display: block;
    visibility: visible;
    opacity: 1;
    transition: none;
  }
  .brand-card__panel-inner {
    grid-template-columns: minmax(7rem, 0.35fr) minmax(0, 1fr);
    min-inline-size: 0;
    block-size: auto;
    padding-block: var(--space-5) var(--space-8);
    padding-inline: clamp(3.5rem, 8vw, 6rem) var(--space-5);
  }
  .brand-card__logo-img { max-block-size: 6rem; }
  .brand-card__panel#platform-panel-ysf .brand-card__logo-img { max-block-size: 7rem; }
  .brand-card__wordmark { font-size: clamp(2.2rem, 1.8rem + 1.8vw, 3.2rem); }
  .brand-card__descriptor { font-size: var(--fs-small); }
}

@media (max-width: 600px) {
  .brand-card__panel-inner {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding-block-start: var(--space-4);
    padding-inline: 2.5rem var(--space-3);
  }
  .brand-card__media {
    place-items: center start;
  }
  .brand-card__logo-img { max-block-size: 4rem; }
  .brand-card__panel#platform-panel-ysf .brand-card__logo-img { max-block-size: 5rem; }
  .brand-card__logo-text { font-size: 2rem; }
  .brand-card__wordmark { font-size: 2.25rem; }
  .brand-card__wordmark-sub { font-size: var(--fs-micro); }
  .brand-card__read-more {
    margin-block-start: var(--space-5);
  }
  .brand-modal__panel {
    max-block-size: 84vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .s-ecosystem__item,
  .brand-card__panel,
  .brand-card__trigger,
  .brand-card__trigger-icon,
  .brand-card__trigger-title,
  .brand-card__read-more::after { transition: none; }

  /* Keep the staggered content fully visible — no entrance motion. */
  .brand-card__media,
  .brand-card__kicker,
  .brand-card__wordmark,
  .brand-card__descriptor,
  .brand-card__read-more {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}