.portfolio-polished {
  isolation: isolate;
  background-color: #05070d !important;
}

.portfolio-polished > main,
.portfolio-polished > footer {
  position: relative;
}

.portfolio-polished > header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 13, 26, 0.76) !important;
  border-color: rgba(148, 163, 184, 0.1) !important;
  box-shadow: 0 10px 40px rgba(2, 6, 23, 0.22);
  backdrop-filter: blur(18px) saturate(125%);
  -webkit-backdrop-filter: blur(18px) saturate(125%);
}

.portfolio-polished > main {
  z-index: 2;
}

.portfolio-polished > footer {
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(11, 16, 32, 0.86), rgba(4, 8, 18, 0.97)) !important;
  border-color: rgba(148, 163, 184, 0.1) !important;
}

.portfolio-site-ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% -12%, rgba(56, 189, 248, 0.07), transparent 38%),
    linear-gradient(180deg, rgba(5, 7, 13, 0.1), rgba(5, 7, 13, 0.78));
}

.portfolio-ambient-orb,
.portfolio-ambient-grid,
.portfolio-pointer-glow {
  position: absolute;
  display: block;
  pointer-events: none;
}

.portfolio-ambient-orb {
  width: min(64vw, 900px);
  aspect-ratio: 1;
  border-radius: 999px;
  filter: blur(110px);
  opacity: 0.1;
}

/* Shared keyboard affordances added in Sprint 4. */
:where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid #38BDF8;
  outline-offset: 3px;
}

[data-skip-link] {
  position: fixed;
  inset-block-start: 1rem;
  inset-inline-start: 1rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  border: 2px solid #38BDF8;
  border-radius: 0.6rem;
  background: #38BDF8;
  color: #020617;
  font-weight: 800;
  transform: translateY(-200%);
  transition: transform 160ms ease;
}

[data-skip-link]:focus-visible {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-skip-link] {
    transition: none;
  }
}

.portfolio-ambient-orb-blue {
  top: -32%;
  right: -18%;
  background: #38bdf8;
  animation: portfolio-ambient-blue 24s ease-in-out infinite alternate;
}

.portfolio-ambient-orb-green {
  bottom: -42%;
  left: -24%;
  background: #22c55e;
  opacity: 0.055;
  animation: portfolio-ambient-green 30s ease-in-out infinite alternate;
}

.portfolio-ambient-grid {
  inset: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 74%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 74%);
}

.portfolio-pointer-glow {
  top: 0;
  left: 0;
  width: 380px;
  height: 380px;
  border-radius: 999px;
  opacity: 0;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.105), rgba(56, 189, 248, 0.035) 38%, transparent 72%);
  filter: blur(6px);
  transition: opacity 0.4s ease;
}

.portfolio-ambient-pointer-active .portfolio-pointer-glow {
  opacity: 1;
}

.portfolio-page-hidden .portfolio-ambient-orb {
  animation-play-state: paused;
}

.portfolio-page-hidden .portfolio-pointer-glow {
  opacity: 0;
}

@keyframes portfolio-ambient-blue {
  from { transform: translate3d(-3%, -2%, 0) scale(0.96); }
  to { transform: translate3d(-12%, 10%, 0) scale(1.08); }
}

@keyframes portfolio-ambient-green {
  from { transform: translate3d(0, 0, 0) scale(0.94); }
  to { transform: translate3d(13%, -9%, 0) scale(1.08); }
}

.portfolio-page-intro {
  position: relative;
  isolation: isolate;
}

.portfolio-page-intro::before {
  content: "";
  position: absolute;
  z-index: -1;
  width: min(72vw, 820px);
  height: min(44vw, 420px);
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.115), rgba(56, 189, 248, 0.025) 46%, transparent 72%);
  filter: blur(18px);
  pointer-events: none;
}

.portfolio-page-title {
  color: transparent !important;
  background: linear-gradient(118deg, #ffffff 15%, #e2e8f0 54%, #7dd3fc 100%);
  background-clip: text;
  -webkit-background-clip: text;
  text-shadow: 0 18px 55px rgba(56, 189, 248, 0.08);
}

.portfolio-surface:not(.sticky),
.portfolio-polished main :is(
  [class*="bg-[#111827]"],
  [class*="bg-[#0B1020]"],
  [class*="bg-[#0D1526]"]
)[class~="border"]:is([class*="rounded-xl"], [class*="rounded-2xl"], [class*="rounded-3xl"]):not(.sticky) {
  position: relative;
}

/* The complete desktop navigation needs more room than the old 768px cutoff. */
@media (max-width: 1023px) {
  .portfolio-polished > header nav[class~="md:flex"] {
    display: none;
  }
  .portfolio-polished > header [class~="md:hidden"] {
    display: flex;
  }
}

/* Keep case-study sidebars in normal flow on the single-column layout. */
@media (max-width: 767px) {
  .portfolio-polished main aside.sticky {
    position: static;
    top: auto;
  }
}

.portfolio-surface,
.portfolio-polished main :is(
  [class*="bg-[#111827]"],
  [class*="bg-[#0B1020]"],
  [class*="bg-[#0D1526]"]
)[class~="border"]:is([class*="rounded-xl"], [class*="rounded-2xl"], [class*="rounded-3xl"]) {
  background:
    linear-gradient(145deg, rgba(19, 29, 49, 0.92), rgba(10, 16, 31, 0.88)) !important;
  border-color: rgba(148, 163, 184, 0.105) !important;
  box-shadow:
    0 12px 38px rgba(2, 6, 23, 0.16),
    inset 0 1px rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    background-color 0.25s ease;
}

.portfolio-action,
.portfolio-polished main :is(a, button):is(
  [class*="bg-[#38BDF8]"],
  [class*="bg-[#22C55E]"],
  [class*="rounded-xl"][class*="font-bold"]
) {
  box-shadow: 0 10px 28px rgba(2, 6, 23, 0.16);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease !important;
}

.portfolio-hero-effect {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  max-width: 1180px !important;
  min-height: clamp(520px, 66vh, 680px);
  margin-top: clamp(1rem, 3vw, 2.5rem);
  padding-inline: clamp(1.25rem, 5vw, 4.5rem) !important;
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: clamp(1.5rem, 3vw, 2.25rem);
  background: #07101f;
  box-shadow:
    0 28px 90px rgba(2, 6, 23, 0.48),
    inset 0 1px rgba(255, 255, 255, 0.04);
}

/* Dark text keeps solid green contact actions readable in both locales. */
.portfolio-polished main a[class~="bg-[#22C55E]"] {
  color: #052e16;
}

.portfolio-hero-effect::before,
.portfolio-hero-effect::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.portfolio-hero-effect::before {
  background:
    radial-gradient(circle at 50% 42%, transparent 0 26%, rgba(2, 6, 23, 0.1) 58%, rgba(2, 6, 23, 0.7) 100%),
    linear-gradient(to bottom, rgba(2, 6, 23, 0.04), rgba(2, 6, 23, 0.5));
}

.portfolio-hero-effect::after {
  opacity: 0.14;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.portfolio-hero-effect > :not(.portfolio-grainient) {
  position: relative;
  z-index: 2;
}

.portfolio-hero-effect > [data-portfolio-legacy-glow] {
  display: none;
}

.portfolio-grainient {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.82;
}

.portfolio-hero-effect.portfolio-grainient-fallback {
  background:
    radial-gradient(circle at 72% 30%, rgba(56, 189, 248, 0.34), transparent 38%),
    radial-gradient(circle at 28% 70%, rgba(34, 197, 94, 0.2), transparent 36%),
    linear-gradient(135deg, #07101f, #082f49 58%, #07101f);
}

@media (hover: hover) and (pointer: fine) {
  .portfolio-surface:hover,
  .portfolio-polished main :is(
    [class*="bg-[#111827]"],
    [class*="bg-[#0B1020]"],
    [class*="bg-[#0D1526]"]
  )[class~="border"]:hover {
    background:
      radial-gradient(circle at 76% 8%, rgba(56, 189, 248, 0.085), transparent 42%),
      linear-gradient(145deg, rgba(19, 29, 49, 0.94), rgba(10, 16, 31, 0.9)) !important;
    border-color: rgba(56, 189, 248, 0.28) !important;
    box-shadow:
      0 18px 48px rgba(2, 6, 23, 0.3),
      0 0 0 1px rgba(56, 189, 248, 0.035),
      inset 0 1px rgba(255, 255, 255, 0.045);
  }

  .portfolio-action:hover,
  .portfolio-polished main :is(a, button):is(
    [class*="bg-[#38BDF8]"],
    [class*="bg-[#22C55E]"],
    [class*="rounded-xl"][class*="font-bold"]
  ):hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(56, 189, 248, 0.13);
  }
}

@media (max-width: 1023px), (pointer: coarse) {
  .portfolio-site-ambient {
    background:
      radial-gradient(circle at 70% 4%, rgba(56, 189, 248, 0.075), transparent 34%),
      linear-gradient(180deg, rgba(5, 7, 13, 0.12), rgba(5, 7, 13, 0.74));
  }

  .portfolio-ambient-orb {
    filter: blur(90px);
    opacity: 0.07;
    animation: none;
  }

  .portfolio-ambient-orb-green {
    opacity: 0.035;
  }

  .portfolio-ambient-grid,
  .portfolio-pointer-glow {
    display: none;
  }

  .portfolio-surface {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .portfolio-polished main :is(
    [class*="bg-[#111827]"],
    [class*="bg-[#0B1020]"],
    [class*="bg-[#0D1526]"]
  )[class~="border"] {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .portfolio-hero-effect {
    min-height: auto;
    margin-top: 1rem;
    padding-top: clamp(3.5rem, 12vw, 5rem) !important;
    padding-bottom: clamp(3.5rem, 12vw, 5rem) !important;
    border-radius: 1.5rem;
  }

  .portfolio-grainient {
    opacity: 0.66;
  }

}

@media (max-width: 639px) {
  .portfolio-hero-effect {
    width: calc(100% - 1.5rem);
    padding-inline: 1.1rem !important;
    padding-top: 3.5rem !important;
    padding-bottom: 3.5rem !important;
    border-radius: 1.35rem;
  }

  .portfolio-hero-effect > .inline-flex {
    max-width: 100%;
    padding: 0.65rem 0.9rem;
    font-size: 0.75rem;
    line-height: 1.65;
  }

  .portfolio-hero-effect h1 {
    font-size: clamp(2rem, 9vw, 2.45rem);
    line-height: 1.12;
  }

  .portfolio-hero-effect p {
    line-height: 1.75;
  }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-ambient-orb {
    animation: none;
  }

  .portfolio-pointer-glow {
    display: none;
  }

  .portfolio-surface,
  .portfolio-action,
  .portfolio-polished main :is(
    [class*="bg-[#111827]"],
    [class*="bg-[#0B1020]"],
    [class*="bg-[#0D1526]"]
  )[class~="border"],
  .portfolio-polished main :is(a, button):is(
    [class*="bg-[#38BDF8]"],
    [class*="bg-[#22C55E]"],
    [class*="rounded-xl"][class*="font-bold"]
  ) {
    transition: none !important;
  }

  .portfolio-grainient {
    opacity: 0.58;
  }

}