:root {
  --bg: #020617;
  --bg-alt: #020617;
  --card-bg: #020617;
  --card-elevated: #020617;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --accent-strong: rgba(56, 189, 248, 0.75);
  --accent-2: #a855f7;
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --chip-bg: rgba(15, 23, 42, 0.9);
  --border-subtle: rgba(148, 163, 184, 0.35);
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.8);
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-pill: 999px;
  --transition-fast: 160ms ease-out;
  --transition-med: 220ms ease-out;
  --nav-height: 70px;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, #1e293b 0, transparent 55%),
    radial-gradient(circle at bottom right, #0f172a 0, transparent 55%),
    linear-gradient(to bottom, #020617 0, #000 60%, #020617 100%);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #020617;
}
::-webkit-scrollbar-thumb {
  background: #1f2937;
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
  background: #374151;
}

.page-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 16px 64px;
}

/* NAVBAR */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.96),
    rgba(15, 23, 42, 0.86),
    transparent
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--nav-height);
  position: relative;  /* allows us to center nav-links absolutely */
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background:
    radial-gradient(circle at 0 0, #38bdf8, transparent 55%),
    radial-gradient(circle at 100% 100%, #a855f7, transparent 55%),
    #020617;
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.9);
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: #e5e7eb;
}

.nav-title {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nav-title-main {
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9ca3af;
}

.nav-title-sub {
  font-size: 0.8rem;
  color: #6b7280;
}

.nav-links {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.83rem;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;   /* pushes this group to the right */
}


/* Notes burger icon */
.burger {
  position: relative;          /* back inside the flex flow */
  width: 32px;
  height: 22px;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.burger span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  background: #e5e7eb; /* match your text color */
  border-radius: 999px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: 0.25s ease-in-out;
}

.burger span:nth-of-type(1) {
  top: 0;
  transform-origin: left center;
}

.burger span:nth-of-type(2) {
  top: 50%;
  transform: translateY(-50%);
  transform-origin: left center;
}

.burger span:nth-of-type(3) {
  top: 100%;
  transform-origin: left center;
  transform: translateY(-100%);
}

/* When active (turned into an X) */
.burger.active span:nth-of-type(1) {
  transform: rotate(45deg);
  top: 2px;
  left: 4px;
}

.burger.active span:nth-of-type(2) {
  width: 0%;
  opacity: 0;
}

.burger.active span:nth-of-type(3) {
  transform: rotate(-45deg);
  top: 20px;
  left: 4px;
}

.nav-links a {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: #9ca3af;
  transition: background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform 120ms ease-out;
}

.nav-links a:hover {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.5);
  transform: translateY(-1px);
  color: #e5e7eb;
}

.nav-pill {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.7);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  background: radial-gradient(circle at 0 0, #0f172a, #020617);
  box-shadow: 0 7px 18px rgba(15, 23, 42, 0.9);
}

.nav-pill span {
  font-weight: 500;
  color: #e5e7eb;
}

.nav-pill small {
  color: #9ca3af;
}

/* HERO */
main {
  margin-top: 18px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  margin-bottom: 28px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: linear-gradient(
    to right,
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.6)
  );
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.9);
  margin-bottom: 12px;
}

.hero-tag-icon {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: radial-gradient(circle at 0 0, #38bdf8, #0ea5e9);
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  color: #0b1120;
  font-weight: 700;
}

.hero-tag-text {
  font-size: 0.76rem;
  color: #9ca3af;
}

.hero-tag-handle {
  font-weight: 600;
  color: #e5e7eb;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 2.8rem);
  letter-spacing: 0.03em;
  line-height: 1.1;      /* <<< add this */
  margin-bottom: 8px;
}

.hero h1 span {
  background: linear-gradient(120deg, #38bdf8, #a855f7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 0.9rem;
  color: #9ca3af;
  max-width: 480px;
  margin-bottom: 18px;
}

.hero-subtitle strong {
  color: #e5e7eb;
  font-weight: 600;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.chip {
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--chip-bg);
  border: 1px solid rgba(148, 163, 184, 0.45);
  font-size: 0.75rem;
  color: #9ca3af;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: radial-gradient(circle at 0 0, #22c55e, #16a34a);
  box-shadow: 0 0 0 5px rgba(34, 197, 94, 0.22);
}

.chip-ghost {
  background: rgba(15, 23, 42, 0.7);
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.btn {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 8px 16px;
  font-size: 0.86rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: background var(--transition-med),
    transform var(--transition-med),
    box-shadow var(--transition-med),
    border-color var(--transition-med),
    color var(--transition-med);
  background: transparent;
  color: #e5e7eb;
}

.btn-primary {
  background: radial-gradient(circle at 0 0, #38bdf8, #0284c7);
  box-shadow:
    0 10px 30px rgba(8, 47, 73, 0.8),
    0 0 0 1px rgba(59, 130, 246, 0.3);
  color: #0b1120;
  font-weight: 600;
}

.btn-primary span {
  font-size: 1.1rem;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    0 16px 40px rgba(8, 47, 73, 0.9),
    0 0 0 1px rgba(56, 189, 248, 0.6);
}

.btn-ghost {
  border-color: rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.85);
  color: #e5e7eb;
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 1);
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.95);
}

.hero-note {
  font-size: 0.75rem;
  color: #6b7280;
}

.hero-note strong {
  color: #e5e7eb;
  font-weight: 500;
}

/* HERO VISUAL CARD STACK */
.hero-visual {
  position: relative;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Oval frame */
.stack-orbit {
  position: relative;
  width: 320px;
  height: 220px;
  filter: drop-shadow(0 22px 60px rgba(15, 23, 42, 1));
}

.stack-orbit::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  border: 1px dashed rgba(148, 163, 184, 0.5);
  opacity: 0.4;
}

.stack-orbit-glow {
  position: absolute;
  inset: 12%;
  border-radius: inherit;
  background:
    radial-gradient(circle at 50% 20%, rgba(56, 189, 248, 0.4), transparent 60%),
    radial-gradient(circle at 50% 80%, rgba(168, 85, 247, 0.45), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.85;
  filter: blur(2px);
}

.stack-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 260px;
  max-width: 90%;
  padding: 16px 18px;
  border-radius: 18px;
  background: radial-gradient(circle at 0 0, #0f172a, #020617);
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transform-origin: center;
  transition: transform 220ms ease-out, box-shadow 220ms ease-out,
    border-color 220ms ease-out;
}

.stack-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background-image: linear-gradient(
    120deg,
    transparent 0,
    rgba(148, 163, 184, 0.1) 40%,
    rgba(148, 163, 184, 0.3) 50%,
    rgba(148, 163, 184, 0.1) 60%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: shimmer 3.2s infinite;
  opacity: 0.8;
  pointer-events: none;
}

.stack-card-main {
  z-index: 3;
  transform: translate(-50%, -50%) rotate(-1deg);
}

.stack-card-main:hover {
  transform: translate(-50%, -54%) scale(1.015) rotate(-0.3deg);
  border-color: rgba(56, 189, 248, 0.9);
  box-shadow:
    0 18px 45px rgba(8, 47, 73, 1),
    0 0 0 1px rgba(56, 189, 248, 0.7);
}

.stack-card-secondary {
  z-index: 2;
  opacity: 0.85;
  transform: translate(calc(-50% + 18px), calc(-50% + 26px)) rotate(4deg);
}

.stack-card-tertiary {
  z-index: 1;
  opacity: 0.7;
  transform: translate(calc(-50% - 16px), calc(-50% - 26px)) rotate(-6deg);
}

.stack-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.stack-card-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #9ca3af;
}

.stack-card-status {
  font-size: 0.7rem;
  color: #a855f7;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.stack-card-status-badge {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: radial-gradient(circle at 0 0, #a855f7, #22c55e);
}

.stack-card-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.2fr);
  gap: 12px;
  align-items: center;
}

.stack-metrics {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stack-metric-label {
  font-size: 0.7rem;
  color: #6b7280;
}

.stack-metric-value {
  font-size: 1.2rem;
  font-weight: 700;
}

.stack-metric-tag {
  font-size: 0.65rem;
  color: #9ca3af;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.stack-pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: radial-gradient(circle at 0 0, #38bdf8, #22c55e);
}

.stack-timeline {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 0.73rem;
  color: #9ca3af;
}

.stack-timeline-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stack-timeline-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  background: radial-gradient(circle at 0 0, #38bdf8, #0ea5e9);
}

.stack-timeline-label {
  color: #e5e7eb;
}

.stack-timeline-desc {
  color: #9ca3af;
}

/* Rotate button */
.stack-rotate-btn {
  position: absolute;
  bottom: -6px;
  right: -6px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: radial-gradient(circle at 0 0, #38bdf8, #0ea5e9);
  box-shadow:
    0 10px 24px rgba(15, 23, 42, 0.95),
    0 0 0 1px rgba(59, 130, 246, 0.7);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  color: #020617;
  cursor: pointer;
  transition: transform 150ms ease-out, box-shadow 150ms ease-out;
}

.stack-rotate-btn:hover {
  transform: translateY(-1px);
  box-shadow:
    0 14px 30px rgba(8, 47, 73, 1),
    0 0 0 1px rgba(56, 189, 248, 0.9);
}

.stack-rotate-btn:active {
  transform: translateY(0);
  box-shadow:
    0 8px 18px rgba(8, 47, 73, 0.9),
    0 0 0 1px rgba(56, 189, 248, 0.8);
}

/* SECTION WRAPPERS */
.section {
  margin-bottom: 26px;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9ca3af;
}

.section-pill {
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: #6b7280;
}

/* CARD GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

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

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

/* Helper for clarity (same as .grid's default) */
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-visual {
    order: -1;
  }
}

@media (max-width: 800px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .nav-links {
    display: none;
  }
  .nav-inner {
    justify-content: space-between;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.9rem;
  }
  .nav-pill {
    font-size: 0.76rem;
  }
}

/* GENERIC CARD */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 0 0, #020617, #020617);
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 14px 14px 12px;
  overflow: hidden;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.9);
  transition: transform var(--transition-med),
    box-shadow var(--transition-med),
    border-color var(--transition-med),
    background var(--transition-med);
}

.card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background-image: linear-gradient(
    120deg,
    transparent 0,
    rgba(148, 163, 184, 0.12) 40%,
    rgba(148, 163, 184, 0.36) 50%,
    rgba(148, 163, 184, 0.16) 60%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: shimmer 3.8s infinite;
  opacity: 0.6;
  pointer-events: none;
}

.card-inner {
  position: relative;
  z-index: 1;
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: rgba(56, 189, 248, 0.9);
  box-shadow:
    0 18px 44px rgba(15, 23, 42, 1),
    0 0 0 1px rgba(56, 189, 248, 0.5);
  background: radial-gradient(circle at 0 0, #0f172a, #020617);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}

.card-title {
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.card-subtitle {
  font-size: 0.76rem;
  color: #9ca3af;
  margin-bottom: 6px;
}

.card-badge {
  font-size: 0.7rem;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  color: #9ca3af;
  background: rgba(15, 23, 42, 0.9);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.card-body {
  font-size: 0.8rem;
  color: #9ca3af;
  margin-bottom: 8px;
}

.card-list {
  list-style: none;
  font-size: 0.78rem;
  color: #9ca3af;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
}

.card-list li::before {
  content: "•";
  margin-right: 6px;
  color: #38bdf8;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.tag {
  font-size: 0.7rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: #9ca3af;
}

.tag-pill {
  background: rgba(8, 47, 73, 0.85);
  border-color: rgba(56, 189, 248, 0.8);
  color: #bae6fd;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.72rem;
  color: #6b7280;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  color: #38bdf8;
  text-decoration: none;
}

.card-link span {
  font-size: 0.85rem;
}

.card-pill {
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  font-size: 0.7rem;
}

/* TIMELINE CARD */
.timeline {
  display: grid;
  gap: 10px;
  margin-top: 4px;
  font-size: 0.78rem;
  color: #9ca3af;
}

.timeline-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 10px;
  align-items: baseline;
}

.timeline-label {
  font-size: 0.74rem;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timeline-value {
  color: #e5e7eb;
}

/* REVEAL ANIMATIONS */
.reveal {
  opacity: 0;
  transform: translateY(16px) scale(0.985);
  transition: opacity 450ms ease-out, transform 450ms ease-out;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* BACK TO TOP */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.65);
  background: radial-gradient(circle at 0 0, #38bdf8, #0ea5e9);
  display: grid;
  place-items: center;
  color: #020617;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow:
    0 14px 30px rgba(15, 23, 42, 0.95),
    0 0 0 1px rgba(59, 130, 246, 0.6);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 200ms ease-out, transform 200ms ease-out,
    box-shadow 200ms ease-out, transform 200ms ease-out;
  z-index: 40;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  box-shadow:
    0 18px 38px rgba(8, 47, 73, 1),
    0 0 0 1px rgba(56, 189, 248, 0.8);
  transform: translateY(-2px);
}

/* ===================== LESSON NOTES SIDEBAR ===================== */

.notes-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease-out;
  z-index: 40;
}

.notes-sidebar-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.notes-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(340px, 80vw);
  background: radial-gradient(circle at 0 0, #020617, #020617);
  border-left: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: -18px 0 40px rgba(15, 23, 42, 0.95);
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 220ms ease-out;
  z-index: 50;
}

.notes-sidebar.open {
  transform: translateX(0);
}

.notes-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.notes-sidebar-header h3 {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9ca3af;
}

.notes-close {
  border: 1px solid rgba(148, 163, 184, 0.6);
  border-radius: 999px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  background: rgba(15, 23, 42, 0.9);
  color: #e5e7eb;
  cursor: pointer;
  font-size: 1rem;
}

.notes-sidebar-body {
  flex: 1;
  overflow-y: auto;
  padding-right: 4px;
  font-size: 0.8rem;
  color: #9ca3af;
}

/* Scrollbar inside sidebar */
.notes-sidebar-body::-webkit-scrollbar {
  width: 6px;
}
.notes-sidebar-body::-webkit-scrollbar-thumb {
  background: #1f2937;
  border-radius: 999px;
}

.notes-section + .notes-section {
  margin-top: 14px;
}

.notes-section h4 {
  font-size: 0.85rem;
  color: #e5e7eb;
  margin-bottom: 6px;
}

.notes-section ul {
  list-style: disc;
  margin-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* KEYFRAMES */

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* ===================== SCROLL REVEAL ANIMATIONS ===================== */

.reveal {
  opacity: 0;
  transform: translateY(24px) scale(0.985);
  filter: blur(6px);
  transition:
    opacity 600ms ease-out,
    transform 600ms ease-out,
    filter 600ms ease-out;
}

/* When the element is "activated" by JS */
.reveal.show {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

/* Optional direction variants using data attributes */
.reveal[data-reveal="left"] {
  transform: translateX(-32px);
}
.reveal[data-reveal="right"] {
  transform: translateX(32px);
}
.reveal[data-reveal="up"] {
  transform: translateY(32px);
}

/* When shown, all variants end at normal position */
.reveal.show[data-reveal] {
  transform: translateX(0) translateY(0) scale(1);
}


/* ===================== NAV BAR CUT OFF BUG FIX ===================== */

/* Make anchored sections account for the sticky navbar */
.section {
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

/* If you ever scroll to the hero by id="top" */
#top {
  scroll-margin-top: calc(var(--nav-height) + 24px);
}