/* ════════════════════════════════════════════════════════════
   DUMA — main stylesheet
   Design system: ultra-dark, glass panels, calm forest green
   ════════════════════════════════════════════════════════════ */

/* ── Base ──────────────────────────────────────────────────── */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-weight: 300;
  background: var(--clr-bg);
  color: var(--clr-text);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--clr-primary); color: #fff; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-12);
}

/* ── Glass panel ─────────────────────────────────────────────── */
.glass {
  background: var(--clr-surface);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
}

/* ── Decorative background glows ─────────────────────────────── */
.deco-glow-1 {
  position: fixed;
  top: -10%; left: -10%;
  width: 50%; height: 50%;
  border-radius: 50%;
  background: var(--clr-primary-glow);
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
.deco-glow-2 {
  position: fixed;
  bottom: -10%; right: -10%;
  width: 40%; height: 40%;
  border-radius: 50%;
  background: rgba(30, 70, 50, 0.20);
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.85em 2em;
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 0.6875rem;          /* 11px */
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition:
    background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out),
    opacity var(--dur-fast);
  cursor: pointer;
  border: none;
}
.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: none; }

.btn--primary {
  background: var(--clr-text);
  color: var(--clr-bg);
}
.btn--primary:hover {
  background: var(--clr-primary);
  color: var(--clr-text);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--clr-border);
  color: rgba(255,255,255,0.6);
}
.btn--ghost:hover {
  border-color: var(--clr-primary);
  color: var(--clr-text);
}

.btn--play {
  background: var(--clr-primary-dim);
  border: 1px solid rgba(74,140,107,0.30);
  color: var(--clr-primary);
  font-size: 0.625rem;
  padding: 0.7em 1.5em;
}
.btn--play:hover { background: rgba(74,140,107,0.25); }

/* ── Mono label ──────────────────────────────────────────────── */
.label-mono {
  font-family: var(--font-mono);
  font-size: 0.5625rem;   /* 9px */
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--clr-text-faint);
}
.label-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;    /* 10px */
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--clr-primary);
}

/* ── Section shared ──────────────────────────────────────────── */
.section-header {
  margin-bottom: var(--space-12);
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.30);
  display: block;
  margin-bottom: var(--space-4);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.08;
  color: var(--clr-text);
}
.section-title em {
  font-style: italic;
  opacity: 0.75;
}
.section-subtitle {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  font-weight: 300;
  font-style: italic;
  line-height: 1.65;
  margin-top: var(--space-4);
  max-width: 48ch;
}

/* ── Live dot ────────────────────────────────────────────────── */
.live-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-primary);
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.75); }
}

/* ════════════════════════════════════════════════════════════
   NAV
   ════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--space-12);
  background: linear-gradient(to bottom, rgba(5,5,5,0.5), transparent);
  backdrop-filter: blur(2px);
  transition: background var(--dur-slow), backdrop-filter var(--dur-slow);
}
.nav.scrolled {
  background: rgba(5,5,5,0.85);
  backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--clr-border-dim);
}

.nav__logo {
  display: flex;
  align-items: center;
}
.nav__logo-img {
  height: 22px;
  width: auto;
  display: block;
}

.nav__inline-links {
  display: flex;
  gap: var(--space-12);
  margin-left: var(--space-8);
}
.nav__inline-links button,
.nav__inline-links a {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.20em;
  color: rgba(255,255,255,0.50);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--dur-fast);
}
.nav__inline-links button:hover,
.nav__inline-links a:hover,
.nav__inline-links .active { color: var(--clr-text); }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.nav__mobile-menu {
  display: none;
}
.nav__cta {
  padding: 0.55em 1.5em;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--clr-text);
  background: transparent;
  cursor: pointer;
  transition: border-color var(--dur-fast), color var(--dur-fast);
}
.nav__cta:hover { border-color: var(--clr-primary); color: var(--clr-primary); }

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav__burger span {
  display: block; width: 22px; height: 1px;
  background: rgba(255,255,255,0.5);
  transition: transform var(--dur-base), opacity var(--dur-base);
}

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  height: 100svh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
}
.hero__video {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.45;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top,    var(--clr-bg) 0%, transparent 45%),
    linear-gradient(to bottom, var(--clr-bg) 0%, transparent 25%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding-inline: var(--space-12);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--clr-primary);
  display: block;
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.3s forwards;
}
.hero__headline {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--clr-text);
  margin-bottom: var(--space-10);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.5s forwards;
}
.hero__headline em {
  font-style: italic;
  opacity: 0.75;
}
.hero__sub {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  font-weight: 300;
  font-style: italic;
  line-height: 1.65;
  max-width: 38ch;
  margin-bottom: var(--space-10);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.65s forwards;
}
.hero__cta {
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.85s forwards;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  right: var(--space-12);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  animation: fadeIn 1s var(--ease-out) 1.6s both;
}
.hero__scroll-line {
  display: block;
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, var(--clr-primary), transparent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}
.hero__scroll-label {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
  writing-mode: vertical-rl;
  margin-top: var(--space-2);
}

/* ════════════════════════════════════════════════════════════
   QUIZ
   ════════════════════════════════════════════════════════════ */
.quiz {
  padding-block: var(--space-16);
  border-bottom: 1px solid var(--clr-border-dim);
  position: relative;
  z-index: 1;
}
.quiz__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}
.quiz__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.30);
}
.quiz__options {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}
.quiz__option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-8);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  color: rgba(255,255,255,0.40);
  cursor: pointer;
  min-width: 120px;
  transition:
    border-color var(--dur-fast),
    color var(--dur-fast),
    background var(--dur-fast),
    transform var(--dur-fast);
  backdrop-filter: blur(12px);
}
.quiz__option:hover,
.quiz__option.active {
  border-color: rgba(74,140,107,0.5);
  color: var(--clr-text);
  background: var(--clr-primary-dim);
  transform: translateY(-2px);
}
.quiz__option:hover .quiz__code,
.quiz__option.active .quiz__code { color: var(--clr-primary); }
.quiz__code {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.15em;
  color: var(--clr-text-faint);
  align-self: flex-start;
  transition: color var(--dur-fast);
}
.quiz__icon { font-size: 1.5rem; line-height: 1; }
.quiz__name {
  font-family: var(--font-display);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

/* ════════════════════════════════════════════════════════════
   SESSIONS (The Core)
   ════════════════════════════════════════════════════════════ */
.sessions {
  padding-block: var(--space-32);
  position: relative;
  z-index: 1;
}
.sessions .section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.sessions__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.sessions__meta span {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.40);
}

.sessions__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

/* Session card */
.session-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-dim);
  border-radius: var(--radius-xl);
  aspect-ratio: 1 / 1;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    background var(--dur-fast),
    border-color var(--dur-fast),
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}
.session-card:hover,
.session-card:focus-visible {
  background: rgba(255,255,255,0.08);
  border-color: rgba(74,140,107,0.40);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  outline: none;
}

.session-card__label {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  transition: color var(--dur-fast);
  position: relative;
  z-index: 1;
  /* leave space for play button on the right */
  max-width: calc(100% - 32px);
}
.session-card:hover .session-card__label { color: rgba(255,255,255,0.7); }

.session-card__waveform {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  pointer-events: none;
  opacity: 0.35;
  transition: opacity var(--dur-base);
}
.session-card:hover .session-card__waveform { opacity: 0.6; }
.session-card__waveform svg { width: 100%; }

@keyframes liveWave {
  0%, 100% { transform: scaleY(0.2); opacity: 0.3; }
  50%       { transform: scaleY(1);   opacity: 0.9; }
}
.session-card--playing .session-card__waveform {
  opacity: 1 !important;
}
.session-card--playing .session-card__waveform rect {
  transform-box: fill-box;
  transform-origin: center bottom;
  animation: liveWave 1.6s ease-in-out infinite;
  fill: var(--clr-primary) !important;
}
.session-card--playing .session-card__waveform rect:nth-child(3n+1) { animation-delay: 0s;    animation-duration: 1.4s; }
.session-card--playing .session-card__waveform rect:nth-child(3n+2) { animation-delay: 0.22s; animation-duration: 1.7s; }
.session-card--playing .session-card__waveform rect:nth-child(3n)   { animation-delay: 0.44s; animation-duration: 1.5s; }

.session-card__play {
  position: absolute;
  top: var(--space-5);
  right: var(--space-6);
  opacity: 0;
  transition: opacity var(--dur-fast);
  color: var(--clr-text);
}
.session-card:hover .session-card__play { opacity: 1; }

.session-card__footer { position: relative; z-index: 1; }
.session-card__category {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text);
  display: block;
  margin-bottom: 0.2em;
}
.session-card__title {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  color: var(--clr-text-faint);
  text-transform: uppercase;
  line-height: 1;
}

.session-card__mood {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.28);
  line-height: 1.4;
  margin-top: 0.3em;
}

.sessions__youtube-cta {
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  text-align: center;
}
.sessions__youtube-cta a {
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.sessions__youtube-cta a:hover {
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}

/* Feedback button on card */
.session-card__feedback {
  position: absolute;
  bottom: var(--space-5);
  right: var(--space-5);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
  background: rgba(5,5,5,0.90);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  padding: 0.45em 1em;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);
  z-index: 2;
}
.session-card:hover .session-card__feedback { opacity: 1; }
.session-card__feedback:hover {
  color: var(--clr-primary);
  border-color: rgba(74,140,107,0.5);
}

/* ── Persistent player ───────────────────────────────────────── */
.player {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 500;
  width: min(640px, 90vw);
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(24px) saturate(200%);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-8);
  box-shadow: 0 8px 48px rgba(0,0,0,0.7);
  animation: playerIn var(--dur-base) var(--ease-out);
}
.player[hidden] { display: none; }


.player__track-info { flex: 1; min-width: 0; }
.player__track-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  display: block;
}
.player__track-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  flex-shrink: 0;
}
.player__track-meta .live-dot { margin-right: 2px; }

.player__controls {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.player__btn {
  color: rgba(255,255,255,0.40);
  transition: color var(--dur-fast);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
}
.player__btn:hover { color: var(--clr-text); }

.player__btn--play-pause {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--clr-text);
  color: var(--clr-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.player__btn--play-pause:hover {
  background: var(--clr-primary);
  color: var(--clr-text);
  transform: scale(1.06);
}

.player__vol {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.35);
}
.player__vol-bar {
  width: 64px; height: 2px;
  background: var(--clr-border);
  border-radius: 2px;
  overflow: hidden;
}
.player__vol-fill {
  width: 65%; height: 100%;
  background: var(--clr-primary);
  border-radius: 2px;
}

.player__progress-wrap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
}
.player__progress {
  -webkit-appearance: none;
  appearance: none;
  width: 100%; height: 100%;
  background: var(--clr-border-dim);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  cursor: pointer;
  accent-color: var(--clr-primary);
}

.player__time {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--clr-text-faint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.player__btn--close { font-size: 1rem; }
.player__btn--loop { color: rgba(255,255,255,0.3); }
.player__btn--loop.is-active {
  color: var(--clr-primary);
  filter: drop-shadow(0 0 6px rgba(74,140,107,0.5));
}

/* Feedback above player */
.player__feedback-btn {
  position: absolute;
  top: -44px; right: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5em 1em;
  background: var(--clr-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.50);
  cursor: pointer;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.player__feedback-btn svg { color: var(--clr-primary); }
.player__feedback-btn:hover { color: var(--clr-text); border-color: var(--clr-primary); }

/* ════════════════════════════════════════════════════════════
   SCIENCE
   ════════════════════════════════════════════════════════════ */
.science {
  padding-block: var(--space-32);
  border-top: 1px solid var(--clr-border-dim);
  position: relative;
  z-index: 1;
}
.science__header-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: end;
  margin-bottom: var(--space-12);
}
.science__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.article-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-dim);
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition:
    background var(--dur-fast),
    border-color var(--dur-fast),
    transform var(--dur-base) var(--ease-out);
}
.article-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.12);
  transform: translateY(-3px);
}

.article-card__link { display: block; }
.article-card__image-wrap {
  height: 200px;
  overflow: hidden;
  background: #111;
}
.article-card__image-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transform: scale(1);
  transition:
    filter var(--dur-xslow) var(--ease-out),
    transform var(--dur-xslow) var(--ease-out);
}
.article-card:hover .article-card__image-wrap img {
  filter: grayscale(0%);
  transform: scale(1.06);
}

.article-card__body {
  padding: var(--space-8);
}
.article-card__meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.30);
  margin-bottom: var(--space-6);
}
.article-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--clr-text);
  margin-bottom: var(--space-4);
  transition: color var(--dur-fast);
}
.article-card:hover .article-card__title { color: var(--clr-primary); }
.article-card__excerpt {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.40);
  line-height: 1.65;
  margin-bottom: var(--space-8);
  font-weight: 300;
}
.article-card__read {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.30);
  transition: color var(--dur-fast);
}
.article-card:hover .article-card__read { color: rgba(255,255,255,0.7); }

.science__more {
  text-align: center;
  margin-top: var(--space-12);
}

/* ════════════════════════════════════════════════════════════
   BACKSTAGE
   ════════════════════════════════════════════════════════════ */
.backstage {
  padding-block: var(--space-32);
  border-top: 1px solid var(--clr-border-dim);
  position: relative;
  z-index: 1;
}
.backstage__header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
  gap: var(--space-8);
}
.backstage__spinner {
  width: 128px; height: 128px;
  border-radius: 50%;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.backstage__spinner-ring {
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,0.10);
  animation: spinRing 20s linear infinite;
}
.backstage__spinner-text {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.18);
  user-select: none;
}
@keyframes spinRing { to { transform: rotate(360deg); } }

.backstage__grid {
  columns: 3;
  gap: var(--space-5);
}
.reel-item {
  break-inside: avoid;
  margin-bottom: var(--space-5);
}
.reel-item__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #111;
  position: relative;
  border: 1px solid var(--clr-border-dim);
}
.reel-item__media video,
.reel-item__media img {
  width: 100%; height: auto;
  display: block;
  filter: grayscale(100%);
  transform: scale(1);
  transition:
    filter var(--dur-xslow) var(--ease-out),
    transform var(--dur-xslow) var(--ease-out);
}
.reel-item:hover .reel-item__media video,
.reel-item:hover .reel-item__media img {
  filter: grayscale(0%);
  transform: scale(1.06);
}
.reel-item__caption-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  opacity: 0;
  transition: opacity var(--dur-base);
  display: flex;
  align-items: flex-end;
  padding: var(--space-5);
}
.reel-item:hover .reel-item__caption-overlay { opacity: 1; }
.reel-item__caption-overlay span {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--clr-primary);
}

/* ════════════════════════════════════════════════════════════
   DOWNLOAD (Lead Magnet)
   ════════════════════════════════════════════════════════════ */
.download {
  padding-block: var(--space-32);
  border-top: 1px solid var(--clr-border-dim);
  position: relative;
  z-index: 1;
}
.download__grid {
  display: grid;
  grid-template-columns: 5fr 4fr;
  gap: var(--space-16);
  align-items: end;
}

/* Lead magnet card */
.lead-card {
  position: relative;
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-5);
  overflow: hidden;
}
.lead-card::before {
  content: '';
  position: absolute;
  width: 55%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74,140,107,0.58) 0%, transparent 70%);
  filter: blur(32px);
  pointer-events: none;
  animation: cardGlow 7s ease-in-out infinite alternate;
  z-index: 0;
}
@keyframes cardGlow {
  from { bottom: -20%;  left: -10%; }
  to   { bottom:  60%;  left:  50%; }
}
.lead-card > * { position: relative; z-index: 1; }
.lead-card__headline {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1.1;
  color: var(--clr-text);
}
.lead-card__headline em {
  font-style: italic;
  opacity: 0.65;
}
.lead-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.lead-card__title-sm {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
}
.lead-card__badge {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.35em 0.8em;
  background: var(--clr-primary);
  border-radius: var(--radius-full);
  color: var(--clr-text);
}
.lead-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.lead-card__desc {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
  font-weight: 300;
}
.lead-card__form {
  display: flex;
  gap: var(--space-2);
}
.lead-card__input {
  flex: 1;
  background: rgba(255,255,255,0.08);
  border: none;
  border-radius: var(--radius-full);
  padding: 0.65em 1.25em;
  font-size: 0.75rem;
  color: var(--clr-text);
  font-family: var(--font-sans);
  font-weight: 300;
  outline: none;
  transition: background var(--dur-fast), box-shadow var(--dur-fast);
}
.lead-card__input::placeholder { color: rgba(255,255,255,0.25); }
.lead-card__input:focus {
  background: rgba(255,255,255,0.12);
  box-shadow: 0 0 0 1px var(--clr-primary);
}
.lead-card__submit {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--clr-text);
  color: var(--clr-bg);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.lead-card__submit:hover {
  background: var(--clr-primary);
  color: var(--clr-text);
}
.lead-card__submit svg { width: 16px; height: 16px; }
.lead-card__success {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.lead-card__success.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.lead-card__success[hidden] { display: none; }
.lead-card__success-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--clr-primary-dim);
  border: 1px solid rgba(74,140,107,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
}
.lead-card__success-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--clr-text);
}
.lead-card__success-sub {
  font-size: 0.75rem;
  font-weight: 300;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
}

.lead-card__note {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.25);
  line-height: 1.5;
}

/* Download right text */
.download__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  line-height: 1.12;
  margin-bottom: var(--space-4);
}
.download__desc {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.40);
  line-height: 1.65;
  font-weight: 300;
  font-style: italic;
}
.download__desc strong { color: var(--clr-text); font-weight: 400; }

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--clr-border-dim);
  padding-block: var(--space-24) var(--space-12);
  background: rgba(5,5,5,0.5);
  backdrop-filter: blur(24px);
  position: relative;
  z-index: 1;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--space-24);
  align-items: end;
  margin-bottom: var(--space-12);
}
.footer__logo-wrap { display: flex; flex-direction: column; gap: var(--space-2); align-items: flex-start; }
.footer__logo-img {
  height: 18px;
  width: auto;
  display: block;
  opacity: 0.85;
}
.footer__tagline {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.22);
}

.footer__nav-col h5 {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.25);
  font-weight: 700;
  margin-bottom: var(--space-6);
}
.footer__nav-col ul { display: flex; flex-direction: column; gap: var(--space-4); }
.footer__nav-col a,
.footer__nav-col button {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.50);
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: 0.05em;
  text-align: left;
  transition: color var(--dur-fast);
}
.footer__nav-col a:hover,
.footer__nav-col button:hover { color: var(--clr-primary); }

.footer__coords {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--clr-border-dim);
}
.footer__coord { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.footer__coord-label {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.25);
}
.footer__coord-value {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--clr-text);
}
.footer__coord-divider {
  width: 1px; height: 32px;
  background: var(--clr-border-dim);
}

.footer__grid-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-6);
  padding-top: var(--space-8);
  border-top: 1px solid var(--clr-border-dim);
  margin-top: var(--space-8);
}
.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.20);
}

/* ════════════════════════════════════════════════════════════
   MODALS
   ════════════════════════════════════════════════════════════ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 501;
  display: grid;
  place-items: center;
  padding: var(--space-6);
}
.modal[hidden] { display: none; }

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(12px) saturate(150%);
}
.modal__card {
  position: relative;
  z-index: 1;
  background: rgba(12,12,12,0.95);
  backdrop-filter: blur(24px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-10);
  width: min(480px, 100%);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  animation: scaleIn var(--dur-base) var(--ease-out);
  overflow: hidden;
}
.modal__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-primary-dim), transparent);
}
.modal__card--compact { padding: var(--space-8); }

.modal__close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  color: rgba(255,255,255,0.30);
  font-size: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--dur-fast);
}
.modal__close:hover { color: var(--clr-text); }

.modal__icon {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  color: var(--clr-primary);
}
.modal__title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 400;
  text-align: center;
  line-height: 1.2;
}
.modal__subtitle {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.35);
  text-align: center;
  font-style: italic;
  font-weight: 300;
  line-height: 1.5;
  margin-top: calc(-1 * var(--space-4));
}

.modal__reactions {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
}
.modal__reaction {
  font-size: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  transition: transform var(--dur-fast);
  line-height: 1;
}
.modal__reaction:hover { transform: scale(1.3); }

.modal__comment {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  color: var(--clr-text);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 300;
  resize: none;
  outline: none;
  transition: border-color var(--dur-fast);
  width: 100%;
}
.modal__comment::placeholder { color: rgba(255,255,255,0.25); }
.modal__comment:focus { border-color: var(--clr-primary); }

.modal__options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.modal__options .modal__source-btn:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}
.modal__source-btn {
  padding: var(--space-4);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.45);
  cursor: pointer;
  transition: border-color var(--dur-fast), color var(--dur-fast), background var(--dur-fast);
}
.modal__source-btn:hover {
  border-color: rgba(74,140,107,0.5);
  color: var(--clr-text);
  background: var(--clr-primary-dim);
}
.src-step { display: flex; flex-direction: column; gap: var(--space-6); }
.src-step[hidden] { display: none; }

.modal__skip {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.25);
  text-align: center;
  align-self: center;
  transition: color var(--dur-fast);
}
.modal__skip:hover { color: var(--clr-primary); }
.modal__submit { width: 100%; }

/* ════════════════════════════════════════════════════════════
   ANIMATIONS
   ════════════════════════════════════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.93); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes playerIn {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 0.7; }
  50%       { transform: scaleY(0.5); opacity: 0.25; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: 80ms; }
.reveal:nth-child(3) { transition-delay: 160ms; }
.reveal:nth-child(4) { transition-delay: 240ms; }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .sessions__grid { grid-template-columns: repeat(2, 1fr); }
  .science__grid  { grid-template-columns: repeat(2, 1fr); }
  .download__grid { grid-template-columns: 1fr; }
  .footer__grid   { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding-inline: var(--space-6); }
  .nav { padding-inline: var(--space-6); }
  .nav__inline-links { display: none; }
  .nav__burger { display: flex; }
  .nav__mobile-menu.open {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(5,5,5,0.97);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--clr-border-dim);
    z-index: 499;
  }
  .nav__mobile-menu button {
    width: 100%;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-bottom: 1px solid var(--clr-border-dim);
    color: rgba(255,255,255,0.5);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    cursor: pointer;
    transition: color var(--dur-fast), background var(--dur-fast);
  }
  .nav__mobile-menu button:last-child { border-bottom: none; }
  .nav__mobile-menu button:hover,
  .nav__mobile-menu button.active { color: var(--clr-text); background: rgba(255,255,255,0.03); }
  .sessions__grid { grid-template-columns: repeat(2, 1fr); }
  .backstage__grid { columns: 2; }
  .science__grid  { grid-template-columns: 1fr; }
  .science__header-row { grid-template-columns: 1fr; gap: var(--space-4); }
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-8); }
}
@media (max-width: 480px) {
  .sessions__grid { grid-template-columns: 1fr; }
  .backstage__grid { columns: 1; }
  .modal__options { grid-template-columns: 1fr; }
  .player {
    flex-direction: column;
    align-items: stretch;
    width: calc(100vw - var(--space-8));
    gap: var(--space-3);
    padding: var(--space-5);
    bottom: var(--space-4);
  }
  .player__track-info { flex: 0 0 auto; }
  .player__track-name {
    text-align: center;
    font-size: 0.9375rem;
  }
  .player__controls { justify-content: space-between; }
  .player__track-meta {
    justify-content: space-between;
    flex-shrink: 1;
  }
  .player__vol-bar { display: none; }
  .player__feedback-btn { position: static; align-self: center; margin-top: var(--space-1); }
}

/* ── Why Dendra ─────────────────────────────────────────────── */
.why-dendra {
  padding: var(--space-20) 0;
  border-top: 1px solid var(--clr-border-dim);
}
.why-dendra__header {
  margin-bottom: var(--space-8);
}
.why-dendra__heading {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.35;
  margin-top: var(--space-2);
}
.why-dendra__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.why-dendra__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--clr-border-dim);
  transition: border-color var(--dur-fast), transform var(--dur-base) var(--ease-out);
}
.why-dendra__item:hover {
  border-color: rgba(74,140,107,0.35);
  transform: translateY(-4px);
}
.why-dendra__tag {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-primary);
}
.why-dendra__title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--clr-text);
  line-height: 1.3;
}
.why-dendra__text {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.40);
  line-height: 1.7;
  margin-top: auto;
}

/* ── YouTube section ────────────────────────────────────────── */
.yt-section {
  padding: var(--space-20) 0;
  border-top: 1px solid var(--clr-border-dim);
}
.yt-section__embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--clr-surface);
}
.yt-section__embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}
.yt-section__footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-top: var(--space-8);
  gap: var(--space-5);
}
.yt-section__label {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  font-style: italic;
  color: rgba(255,255,255,0.65);
}
.yt-section__cta {
  min-width: 220px;
}

@media (max-width: 768px) {
  .why-dendra__grid { grid-template-columns: 1fr; gap: var(--space-4); }
}

/* ── Story block (Backstage) ────────────────────────────────── */
.story-block {
  max-width: 660px;
  margin-bottom: var(--space-16);
}
.story-block__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-top: var(--space-6);
}
.story-block__body p {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  font-weight: 300;
  font-style: italic;
  line-height: 1.65;
}
.story-block__sign {
  font-family: var(--font-mono) !important;
  font-style: normal !important;
  font-size: 0.75rem !important;
  letter-spacing: 0.1em;
  color: var(--clr-primary) !important;
  text-transform: uppercase;
  padding-top: var(--space-4);
  border-top: 1px solid var(--clr-border-dim);
}

/* ── Manifesto quote (Home) ─────────────────────────────────── */
.manifesto {
  padding: var(--space-20) 0;
  border-top: 1px solid var(--clr-border-dim);
  text-align: center;
}
.manifesto__quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.25rem, 2.5vw, 1.875rem);
  font-weight: 400;
  line-height: 1.5;
  color: rgba(255,255,255,0.65);
  max-width: 640px;
  margin: 0 auto var(--space-8);
}
.manifesto__link {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-primary);
  cursor: pointer;
  transition: opacity var(--dur-fast);
}
.manifesto__link:hover { opacity: 0.7; }