:root {
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --surface: #ffffff;
  --panel-surface: rgba(255, 255, 255, 0.7);
  --border: #dbe2ea;
  --accent: #0f766e;
  --accent-2: #1d4ed8;
  --shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

html.dark {
  --bg: #020617;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --surface: #0f172a;
  --panel-surface: rgba(15, 23, 42, 0.7);
  --border: #1e293b;
  --accent: #14b8a6;
  --accent-2: #38bdf8;
  --shadow: 0 14px 30px rgba(2, 6, 23, 0.45);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  isolation: isolate;
}

.cognitive-atmosphere {
  --field-pointer-x: 0px;
  --field-pointer-y: 0px;
  --field-scroll: 0px;
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: var(--bg);
}

.cognitive-atmosphere__image {
  position: absolute;
  inset: -5%;
  background-image: url("../images/adaptive-cognitive-field.webp");
  background-position: 48% 50%;
  background-repeat: no-repeat;
  background-size: cover;
  opacity: 0.76;
  transform: translate3d(
      var(--field-pointer-x),
      calc(var(--field-pointer-y) + var(--field-scroll)),
      0
    )
    scale(1.08);
  transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
  animation: cognitiveFieldDrift 28s ease-in-out infinite alternate;
  will-change: background-position, transform;
}

.cognitive-atmosphere__wash {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.18), rgba(248, 250, 252, 0.58)),
    radial-gradient(58% 68% at 44% 35%, rgba(255, 255, 255, 0.72), transparent 72%);
}

.cognitive-atmosphere__signals {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.52;
}

.cognitive-signal-line {
  fill: none;
  stroke: url("#cognitiveSignalGradient");
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 4 13;
  animation: cognitiveSignalFlow 18s linear infinite;
}

.cognitive-signal-line--secondary {
  stroke-width: 1;
  stroke-dasharray: 2 16;
  opacity: 0.7;
  animation-duration: 27s;
  animation-direction: reverse;
}

.cognitive-signal-runner {
  fill: #0f8f9b;
  filter: drop-shadow(0 0 7px rgba(15, 143, 155, 0.7));
}

.cognitive-signal-runner--amber {
  fill: #e7b85c;
  filter: drop-shadow(0 0 8px rgba(231, 184, 92, 0.72));
}

.cognitive-node {
  fill: rgba(255, 255, 255, 0.72);
  stroke: rgba(15, 118, 110, 0.5);
  stroke-width: 1.2;
  transform-box: fill-box;
  transform-origin: center;
  animation: cognitiveNodePulse 5.5s ease-in-out infinite;
}

.cognitive-node:nth-of-type(2n) {
  animation-delay: -2.1s;
}

.cognitive-orb {
  position: absolute;
  width: clamp(70px, 8vw, 128px);
  aspect-ratio: 1;
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 12px rgba(255, 255, 255, 0.12),
    0 0 34px rgba(15, 118, 110, 0.08);
  opacity: 0.55;
  animation: cognitiveOrbFloat 14s ease-in-out infinite;
}

.cognitive-orb::before,
.cognitive-orb::after {
  content: "";
  position: absolute;
  inset: 18%;
  border: 1px solid rgba(29, 78, 216, 0.18);
  border-radius: inherit;
}

.cognitive-orb::after {
  inset: 38%;
  background: rgba(15, 118, 110, 0.22);
  border: 0;
}

.cognitive-orb--one {
  top: 14%;
  right: 8%;
}

.cognitive-orb--two {
  right: 28%;
  bottom: 12%;
  width: clamp(52px, 6vw, 92px);
  animation-delay: -6s;
  animation-duration: 19s;
}

html.dark .cognitive-atmosphere__image {
  opacity: 0.42;
  filter: brightness(0.36) saturate(0.86) contrast(1.14);
}

html.dark .cognitive-atmosphere__wash {
  background:
    linear-gradient(180deg, rgba(2, 6, 23, 0.3), rgba(2, 6, 23, 0.72)),
    radial-gradient(60% 70% at 42% 35%, rgba(15, 23, 42, 0.16), transparent 72%);
}

html.dark .cognitive-atmosphere__signals {
  opacity: 0.38;
}

@keyframes cognitiveFieldDrift {
  0% {
    background-position: 47% 49%;
  }
  100% {
    background-position: 53% 52%;
  }
}

@keyframes cognitiveSignalFlow {
  to {
    stroke-dashoffset: -170;
  }
}

@keyframes cognitiveNodePulse {
  0%,
  100% {
    opacity: 0.48;
    transform: scale(0.78);
  }
  50% {
    opacity: 1;
    transform: scale(1.22);
  }
}

@keyframes cognitiveOrbFloat {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(0.96);
  }
  50% {
    transform: translate3d(-12px, 18px, 0) scale(1.04);
  }
}

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

img {
  max-width: 100%;
  display: block;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.brand {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.lang-select {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  border-radius: 8px;
  padding: 0.42rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.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;
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.menu-icon {
  width: 20px;
  display: grid;
  gap: 4px;
}

.menu-icon span {
  display: block;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.site-header.open .menu-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header.open .menu-icon span:nth-child(2) {
  opacity: 0;
}

.site-header.open .menu-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: flex-end;
  flex: 1;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  border-radius: 10px;
  padding: 0.45rem 0.72rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
}

.main-nav a.active,
.main-nav a:hover {
  background: color-mix(in srgb, var(--surface) 85%, var(--accent) 15%);
  color: var(--text);
}

.lang-switcher {
  display: inline-flex;
  gap: 0.2rem;
}

.lang-switcher button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  border-radius: 8px;
  padding: 0.28rem 0.5rem;
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
}

.lang-switcher button.active {
  background: var(--text);
  color: var(--surface);
  border-color: var(--text);
}

.theme-toggle,
.btn,
.btn-outline {
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  padding: 0.45rem 0.6rem;
}

.btn {
  border: 0;
  padding: 0.7rem 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
}

.btn:hover {
  filter: brightness(1.06);
}

.btn-outline {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.68rem 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.25rem;
  margin-top: 1.4rem;
}

.panel,
.section,
.card,
.meta-card {
  border: 1px solid var(--border);
  background: var(--panel-surface);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.section {
  margin-top: 1rem;
  padding: clamp(1rem, 2vw, 1.6rem);
}

.hero-copy {
  padding: clamp(1rem, 2vw, 1.6rem);
}

.eyebrow {
  margin: 0 0 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 800;
}

h1,
h2,
h3 {
  margin: 0 0 0.65rem;
  line-height: 1.25;
  font-family: "Playfair Display", Georgia, serif;
}

h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.9rem);
}

h2 {
  font-size: clamp(1.45rem, 2.3vw, 2rem);
}

.lead,
.muted {
  color: var(--muted);
}

.actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.hero-meta {
  padding: 1rem;
}

.hero-meta ul {
  margin: 0;
  padding-left: 1.1rem;
}

.hero-meta li {
  margin-bottom: 0.75rem;
  color: var(--muted);
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 0.9rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.22rem 0.6rem;
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--muted);
  background: var(--surface);
}

.list {
  margin: 0;
  padding-left: 1.1rem;
}

.list li {
  margin-bottom: 0.4rem;
}

.content-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.6rem;
}

.page-top {
  margin-top: 1rem;
}

.service-intro {
  max-width: 780px;
  margin-bottom: 1.25rem;
}

.service-grid {
  margin-top: 1rem;
}

.service-card {
  position: relative;
  overflow: hidden;
  min-height: 210px;
  padding: 1.35rem;
}

.service-card h2 {
  max-width: 75%;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.service-number {
  display: inline-flex;
  margin-bottom: 1.15rem;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.service-card::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  right: -58px;
  bottom: -58px;
  border: 18px solid color-mix(in srgb, var(--accent) 14%, transparent);
  border-radius: 50%;
}

.process-panel {
  display: grid;
  grid-template-columns: 0.85fr 1.25fr auto;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1rem;
  padding: clamp(1.2rem, 3vw, 2rem);
}

.process-list {
  margin: 0;
  padding-left: 1.3rem;
  color: var(--muted);
}

.process-list li + li {
  margin-top: 0.45rem;
}

.about-shell {
  padding: clamp(1.1rem, 3vw, 2rem);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) 1.28fr;
  gap: clamp(1.2rem, 3vw, 2.2rem);
  align-items: start;
  margin-top: 1.25rem;
}

.portrait-panel {
  padding: 0.8rem;
  overflow: hidden;
}

.portrait-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 12px;
}

.about-copy {
  padding: 0.2rem 0;
}

.doctoral-box {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.doctoral-box p {
  margin-bottom: 0;
  color: var(--muted);
}

.profile-links-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.profile-links {
  display: grid;
  gap: 0.6rem;
}

.profile-links a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem 0.95rem;
  color: var(--muted);
  font-weight: 700;
}

.profile-links a:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  color: var(--text);
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.form-grid {
  display: grid;
  gap: 0.8rem;
}

.form-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 700;
  font-size: 0.9rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  font: inherit;
  padding: 0.68rem 0.72rem;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-note {
  font-size: 0.8rem;
  color: var(--muted);
}

.form-success {
  border: 1px solid color-mix(in srgb, var(--accent) 60%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
  display: none;
}

.form-success.visible {
  display: block;
}

.auth-page {
  min-height: calc(100vh - 70px);
  display: grid;
  place-items: center;
  padding-block: clamp(2rem, 6vw, 5rem);
}

.auth-card {
  width: min(560px, 100%);
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

.auth-card .btn {
  width: 100%;
  margin-top: 0.35rem;
}

.auth-switch {
  margin: 1.25rem 0 0;
  color: var(--muted);
}

.member-thought {
  margin-top: 1.5rem;
  padding: 1.1rem 1.25rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
  color: var(--text);
  font-weight: 700;
}

.auth-switch a,
.auth-card a {
  color: var(--accent);
  font-weight: 700;
}

.alert {
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem 0.95rem;
}

.alert-error {
  border-color: #f1b5b5;
  background: #fff4f4;
  color: #8a1c1c;
}

.alert-success {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.alert .list {
  margin: 0;
}

.member-hero {
  max-width: 900px;
  margin-inline: auto;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  padding: 1.1rem 0 1.8rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.legal-links {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 450ms ease, transform 450ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero,
  .split,
  .about-layout,
  .profile-links-panel,
  .process-panel,
  .grid-2,
  .grid-3,
  .form-grid.two {
    grid-template-columns: 1fr;
  }

  .process-panel .btn {
    justify-self: start;
  }
}

@media (max-width: 880px) {
  .cognitive-atmosphere__image {
    inset: -3%;
    background-image: url("../images/adaptive-cognitive-field-mobile.webp");
    background-position: 56% 48%;
    opacity: 0.62;
    transform: translate3d(0, var(--field-scroll), 0) scale(1.05);
    animation-duration: 34s;
  }

  .cognitive-atmosphere__wash {
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.3), rgba(248, 250, 252, 0.7));
  }

  .cognitive-atmosphere__signals {
    opacity: 0.34;
  }

  .cognitive-orb--two {
    display: none;
  }

  html.dark .cognitive-atmosphere__wash {
    background: linear-gradient(180deg, rgba(2, 6, 23, 0.42), rgba(2, 6, 23, 0.8));
  }

  .header-inner {
    min-height: 64px;
    padding: 0.55rem 0;
  }

  .brand {
    max-width: calc(100% - 110px);
  }

  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-wrap {
    position: absolute;
    left: 4vw;
    right: 4vw;
    top: calc(100% + 1px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0 0 14px 14px;
    background: var(--surface);
    padding: 0.85rem;
    box-shadow: var(--shadow);
    max-height: calc(100vh - 84px);
    overflow-y: auto;
  }

  .site-header.open .nav-wrap {
    display: flex;
  }

  .main-nav {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
  }

  .main-nav a {
    width: 100%;
    padding: 0.68rem 0.75rem;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
  }

  .service-card h2 {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cognitive-atmosphere__image {
    animation: none !important;
    transform: scale(1.03);
  }

  .cognitive-signal-runner,
  .cognitive-orb {
    display: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}