/* Synthesis Academy — placeholder site */

:root {
  /* MCS-inspired palette — dark theme */
  --purple: #402a76;
  --purple-dark: #2f1f57;
  --purple-light: #5c3da3;
  --accent: #00b4d8;
  --accent-soft: rgba(0, 180, 216, 0.12);
  --accent-glow: rgba(0, 180, 216, 0.35);
  --gold: #c9a227;
  --gold-soft: rgba(201, 162, 39, 0.12);
  --gold-glow: rgba(201, 162, 39, 0.3);
  --purple-soft: rgba(92, 61, 163, 0.15);
  --bg-deep: #0d0a18;
  --bg-surface: #12101f;
  --bg-elevated: #1a1630;
  --bg-card: #1f1a38;
  --text-primary: #eeecf4;
  --text-secondary: #a8a3b8;
  --text-muted: #6b6580;
  --border: rgba(238, 236, 244, 0.08);
  --border-strong: rgba(238, 236, 244, 0.16);
  --radius: 12px;
  --radius-lg: 20px;
  --font-heading: "Exo 2", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
  --header-h: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: #33c9e8;
}

ul {
  list-style: none;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg-deep);
  border-radius: 4px;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

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

.eyebrow {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

p + p {
  margin-top: 1rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(13, 10, 24, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
  background: rgba(13, 10, 24, 0.96);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
}

.logo {
  flex-shrink: 0;
  display: block;
}

.logo--nav {
  width: 40px;
  height: 40px;
}

.logo--hero {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  filter: drop-shadow(0 0 24px var(--accent-glow));
}

.logo--footer {
  width: 32px;
  height: 32px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__menu a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav__menu a:hover {
  color: var(--text-primary);
}

.nav__cta {
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--accent) !important;
}

.nav__cta:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--accent);
  color: var(--purple-dark);
}

.btn--primary:hover {
  background: #33c9e8;
  color: var(--purple-dark);
  box-shadow: 0 0 32px var(--accent-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--large {
  padding: 1rem 2.2rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(92, 61, 163, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 60%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 20% 70%, rgba(201, 162, 39, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-deep) 100%);
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 20%, transparent 80%);
  opacity: 0.4;
}

.hero__inner {
  position: relative;
  text-align: center;
  max-width: 780px;
}

.hero__title {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero__lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section--intro {
  background: var(--bg-surface);
}

.section--philosophy {
  background: var(--bg-deep);
}

.section--framework {
  background: var(--bg-surface);
}

.section--qualities {
  background: var(--bg-deep);
}

.section--foundation {
  background: var(--bg-surface);
}

.section--connect {
  background: var(--bg-deep);
  text-align: center;
}

.section__header {
  max-width: 720px;
  margin-bottom: 3.5rem;
}

.section__header--center {
  margin-inline: auto;
  text-align: center;
}

.section__lead {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Split layout */
.split {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  align-items: center;
}

.split__content p {
  color: var(--text-secondary);
}

.insight-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
}

.insight-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-glow), transparent 50%);
  z-index: -1;
  opacity: 0.5;
}

.insight-card__icon {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.insight-card blockquote p {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text-primary);
}

/* Manifesto */
.manifesto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.manifesto-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.manifesto-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.manifesto-card--challenge h3 {
  color: #d47a8a;
}

.manifesto-card--vision h3 {
  color: var(--accent);
}

.manifesto-card li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.manifesto-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}

.manifesto-card--vision li::before {
  background: var(--accent);
}

.manifesto-closing {
  text-align: center;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.manifesto-closing strong {
  display: block;
  margin-top: 0.5rem;
  color: var(--gold);
  font-weight: 600;
}

/* Framework layers */
.framework-layers {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 2.5rem;
}

.layer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.layer__label {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.layer--professional .layer__label {
  color: var(--accent);
}

.layer--personal .layer__label {
  color: var(--purple-light);
}

.layer p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.layer__bridge {
  color: var(--accent);
  opacity: 0.5;
}

.layer__bridge svg {
  width: 40px;
  height: 80px;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.example-card {
  background: linear-gradient(135deg, var(--purple-soft), var(--accent-soft));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  height: 100%;
}

.example-card h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
  color: var(--accent);
}

.example-card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* Quality tabs */
.quality-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  background: var(--bg-elevated);
  border-radius: 999px;
  padding: 0.35rem;
  width: fit-content;
}

.quality-tabs__btn {
  padding: 0.65rem 1.5rem;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.quality-tabs__btn.is-active {
  background: var(--purple);
  color: var(--text-primary);
}

.quality-tabs__btn:not(.is-active):hover {
  color: var(--text-primary);
}

.quality-panel[hidden] {
  display: none;
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.quality-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.quality-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.quality-card__num {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.quality-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
}

.quality-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Foundation */
.foundation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.foundation-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition);
}

.foundation-card:hover {
  border-color: var(--purple-light);
}

.foundation-card__icon {
  font-size: 1.75rem;
  color: var(--gold);
  margin-bottom: 1rem;
}

.foundation-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.foundation-card__note {
  margin-top: 1rem !important;
  font-style: italic;
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.closing-quote {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  padding: 2rem;
  border-left: none;
}

.closing-quote p {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* Connect */
.connect h2 {
  margin-bottom: 1rem;
}

.connect p {
  color: var(--text-secondary);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 2rem;
}

.connect__note {
  margin-top: 1.5rem !important;
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
}

/* Footer */
.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

.footer__inner {
  text-align: center;
}

.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.footer__tagline {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.footer__copy {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

[data-quality] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* Responsive */
@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }

  .manifesto-grid,
  .foundation-grid,
  .examples-grid {
    grid-template-columns: 1fr 1fr;
  }

  .framework-layers {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .layer__bridge {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(13, 10, 24, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav__menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__menu li {
    width: 100%;
  }

  .nav__menu a {
    display: block;
    padding: 0.85rem 1.5rem;
  }

  .nav__toggle.is-open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav__toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle.is-open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .section {
    padding: 4rem 0;
  }

  .quality-grid,
  .examples-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  [data-quality] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll {
    animation: none;
  }
}