/* Arrow Move — fresh light “sticker / casual game” landing (logo lavender + periwinkle + lime CTA) */

:root {
  /* Logo-derived */
  --navy-deep: #2e4a9e;
  --periwinkle: #7a9ee6;
  --cornflower: #6d8fd8;
  --lavender-mist: #d9dcef;
  --sky-tint: #eef1fc;
  --lime: #5ce078;
  --lime-dark: #3db85c;
  /* Fresh light theme (default) */
  --bg-base: #e4e8f8;
  --bg-sheen: #f5f7ff;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border-strong: #ffffff;
  --border-inner: var(--navy-deep);
  --shadow-sticker: 0 0 0 3px var(--border-strong), 0 0 0 6px var(--periwinkle);
  --shadow-soft: 0 18px 50px rgba(46, 74, 158, 0.12);
  --header-bg: color-mix(in srgb, #ffffff 82%, var(--lavender-mist));
  color-scheme: light;
}

[data-theme="dark"] {
  --bg-base: #0b0e18;
  --bg-sheen: #12172a;
  --bg-elevated: #12172a;
  --bg-card: #161c33;
  --text: #f1f5ff;
  --text-muted: #a8b7e8;
  --shadow-soft: 0 20px 60px rgba(0, 0, 0, 0.35);
  --header-bg: color-mix(in srgb, var(--bg-base) 88%, transparent);
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: "Nunito Sans", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-base);
  background-image: radial-gradient(120% 80% at 10% 0%, color-mix(in srgb, var(--periwinkle) 22%, transparent) 0%, transparent 55%), radial-gradient(90% 70% at 100% 20%, color-mix(in srgb, var(--lavender-mist) 90%, white) 0%, transparent 50%), linear-gradient(180deg, var(--bg-sheen) 0%, var(--bg-base) 45%, var(--bg-base) 100%);
  min-height: 100vh;
}

[data-theme="dark"] body {
  background-image: none;
  background-color: var(--bg-base);
}

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

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

a:hover {
  color: var(--periwinkle);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--lime);
  color: #0a0f1a;
  font-weight: 700;
  border-radius: 0 0 12px 12px;
}

.skip-link:focus {
  left: 1rem;
  outline: 3px solid var(--periwinkle);
}

.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

.anchor-target {
  height: 0;
}

.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;
}

/* Icons */
.icon {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2;
}

.icon--sm {
  width: 1.1rem;
  height: 1.1rem;
}

.icon--lg {
  width: 1.75rem;
  height: 1.75rem;
}

.icon--xl {
  width: 2.25rem;
  height: 2.25rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0.75rem 0;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 3px solid color-mix(in srgb, var(--periwinkle) 45%, transparent);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-soft);
}

[data-theme="dark"] .site-header.is-scrolled {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.site-header__inner {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand:hover {
  transform: scale(1.02);
}

.brand__mark {
  width: auto;
  height: 44px;
  object-fit: contain;
}

.brand__wordmark {
  font-family: "Varela Round", "Nunito Sans", sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 3px solid var(--border-inner);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--periwinkle);
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-primary {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-primary a {
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.35rem 0;
  border-bottom: 3px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
}

.nav-primary a:hover {
  border-bottom-color: var(--lime);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 3px solid var(--border-inner);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--periwinkle);
}

.theme-toggle:active {
  transform: scale(0.96);
}

/* Light theme: show moon (switch to dark). Dark theme: show sun (switch to light). */
.theme-toggle__icon--light {
  display: none;
}

.theme-toggle__icon--dark {
  display: block;
}

[data-theme="dark"] .theme-toggle__icon--light {
  display: block;
}

[data-theme="dark"] .theme-toggle__icon--dark {
  display: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  border: 3px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn--sm {
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 0.95rem 1.75rem;
  font-size: 1.05rem;
}

.btn--cta {
  background: linear-gradient(180deg, #6fe08a 0%, var(--lime) 45%, var(--lime-dark) 100%);
  color: #052e16;
  border-color: var(--navy-deep);
  box-shadow: 0 4px 0 color-mix(in srgb, var(--navy-deep) 75%, #000);
}

.btn--cta:hover {
  filter: brightness(1.04);
  box-shadow: 0 6px 0 color-mix(in srgb, var(--navy-deep) 75%, #000);
}

[data-theme="dark"] .btn--cta {
  background: linear-gradient(180deg, var(--lime) 0%, var(--lime-dark) 100%);
  color: #061018;
  border-color: #0f172a;
  box-shadow: 0 4px 0 #1e293b;
}

[data-theme="dark"] .btn--cta:hover {
  box-shadow: 0 6px 0 #1e293b;
}

.btn--cta:focus-visible {
  outline: 3px solid var(--periwinkle);
  outline-offset: 2px;
}

.btn--outline {
  background: #ffffff;
  color: var(--navy-deep);
  border-color: var(--periwinkle);
  box-shadow: 0 3px 0 color-mix(in srgb, var(--periwinkle) 55%, var(--navy-deep));
}

.btn--outline:hover {
  border-color: var(--cornflower);
  background: var(--sky-tint);
}

[data-theme="dark"] .btn--outline {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: 0 3px 0 var(--navy-deep);
}

[data-theme="dark"] .btn--outline:hover {
  background: color-mix(in srgb, var(--bg-card) 85%, var(--periwinkle));
}

.btn--block {
  width: 100%;
}

/* Hero — taller first screen (near full viewport, vertically centered) */
.hero {
  position: relative;
  min-height: min(100svh, 70rem);
  padding: clamp(4.25rem, 11vh, 7.5rem) 0 clamp(4.5rem, 12vh, 8rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__halftone {
  position: absolute;
  inset: -20%;
  opacity: 0.14;
  background-image: radial-gradient(circle, var(--periwinkle) 1px, transparent 1px);
  background-size: 10px 10px;
}

[data-theme="dark"] .hero__halftone {
  opacity: 0.12;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.hero__orb--1 {
  width: min(420px, 70vw);
  height: min(420px, 70vw);
  background: color-mix(in srgb, var(--periwinkle) 55%, white);
  top: -10%;
  right: -5%;
}

.hero__orb--2 {
  width: min(320px, 55vw);
  height: min(320px, 55vw);
  background: color-mix(in srgb, var(--lavender-mist) 95%, var(--cornflower));
  bottom: -15%;
  left: -10%;
}

[data-theme="dark"] .hero__orb {
  opacity: 0.45;
}

[data-theme="dark"] .hero__orb--1 {
  background: var(--navy-deep);
}

[data-theme="dark"] .hero__orb--2 {
  background: var(--cornflower);
}

.hero__grid {
  position: relative;
  width: 100%;
  display: grid;
  gap: clamp(2rem, 4vh, 3rem);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: clamp(2.5rem, 5vh, 4rem);
    min-height: min(72svh, 48rem);
  }
}

/* Hero copy: extra inset so headline doesn’t hug the viewport / grid edge */
.hero__copy {
  padding-inline-start: clamp(1.5rem, 7.5vw, 5.25rem);
}

@media (min-width: 900px) {
  .hero__copy {
    padding-inline-start: clamp(3rem, 9vw, 7.5rem);
  }
}

.hero__eyebrow {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #0f172a;
  background: color-mix(in srgb, var(--periwinkle) 35%, #ffffff);
  border-radius: 999px;
  border: 3px solid var(--border-inner);
}

[data-theme="dark"] .hero__eyebrow {
  color: var(--text);
  background: var(--periwinkle);
}

.hero__title {
  margin: 0 0 1rem;
  font-family: "Varela Round", sans-serif;
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  line-height: 1.15;
  color: var(--navy-deep);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .hero__title {
  color: var(--text);
  text-shadow: 0 2px 0 color-mix(in srgb, var(--navy-deep) 40%, transparent);
}

.hero__lead {
  margin: 0 0 1.75rem;
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 36rem;
}

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

/* Device frame — swap inner image for real screenshot */
.device-frame {
  margin-inline: auto;
  max-width: 280px;
  padding: 12px 12px 18px;
  border-radius: 36px;
  background: linear-gradient(165deg, #ffffff 0%, var(--lavender-mist) 100%);
  border: 4px solid #fff;
  box-shadow: var(--shadow-sticker), var(--shadow-soft);
}

[data-theme="dark"] .device-frame {
  background: linear-gradient(160deg, #1e293b, #0f172a);
  box-shadow: var(--shadow-sticker), 0 24px 60px rgba(0, 0, 0, 0.45);
}

.device-frame__notch {
  width: 38%;
  height: 22px;
  margin: 0 auto 10px;
  border-radius: 0 0 16px 16px;
  background: #cbd5e1;
}

[data-theme="dark"] .device-frame__notch {
  background: #0f172a;
}

.device-frame__shot {
  width: 100%;
  border-radius: 24px;
  border: 3px solid var(--navy-deep);
}

/* Key art (banner) */
.key-art {
  padding: 0 0 clamp(2.5rem, 6vw, 3.5rem);
}

.key-art__figure {
  margin: 0;
  border-radius: 28px;
  overflow: hidden;
  border: 4px solid #fff;
  box-shadow: 0 0 0 3px var(--periwinkle), var(--shadow-soft);
  background: var(--lavender-mist);
}

.key-art__figure img {
  width: 100%;
  height: auto;
  display: block;
}

/* Screenshots gallery */
.gallery {
  padding: clamp(2rem, 5vw, 3rem) 0 clamp(3.5rem, 8vw, 5rem);
}

.gallery__grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.gallery__cell {
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--periwinkle), 0 10px 30px rgba(46, 74, 158, 0.1);
  background: var(--bg-card);
  cursor: default;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s ease;
}

.gallery__cell:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 0 3px var(--cornflower), 0 16px 40px rgba(46, 74, 158, 0.14);
}

.gallery__cell img {
  width: 100%;
  height: auto;
  display: block;
}

[data-theme="dark"] .gallery__cell {
  box-shadow: 0 0 0 3px var(--periwinkle), 0 12px 36px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .gallery__cell:hover {
  box-shadow: 0 0 0 3px var(--cornflower), 0 16px 44px rgba(0, 0, 0, 0.4);
}

/* Features */
.features {
  padding: clamp(3.5rem, 8vw, 5rem) 0;
  background: color-mix(in srgb, #ffffff 65%, transparent);
}

[data-theme="dark"] .features {
  background: transparent;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

.section-head__title {
  margin: 0 0 0.75rem;
  font-family: "Varela Round", sans-serif;
  font-size: clamp(1.65rem, 3vw, 2.1rem);
  color: var(--navy-deep);
}

[data-theme="dark"] .section-head__title {
  color: var(--text);
}

.section-head__lead {
  margin: 0;
  color: var(--text-muted);
}

.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  padding: 1.35rem 1.25rem;
  border-radius: 24px;
  background: var(--bg-card);
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--periwinkle), 0 12px 36px rgba(46, 74, 158, 0.08);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: default;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--lavender-mist);
  box-shadow: 0 0 0 3px var(--cornflower), 0 18px 44px rgba(46, 74, 158, 0.12);
}

[data-theme="dark"] .feature-card {
  box-shadow: 0 0 0 3px var(--periwinkle);
}

[data-theme="dark"] .feature-card:hover {
  box-shadow: 0 0 0 3px var(--periwinkle);
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  border-radius: 16px;
  background: var(--sky-tint);
  color: var(--navy-deep);
  border: 3px solid color-mix(in srgb, var(--periwinkle) 65%, white);
}

[data-theme="dark"] .feature-card__icon {
  background: color-mix(in srgb, var(--navy-deep) 55%, var(--bg-card));
  color: var(--periwinkle);
  border: 3px solid var(--navy-deep);
}

.feature-card__title {
  margin: 0 0 0.5rem;
  font-family: "Varela Round", sans-serif;
  font-size: 1.1rem;
  color: var(--navy-deep);
}

[data-theme="dark"] .feature-card__title {
  color: var(--text);
}

.feature-card__text {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* Download strip */
.download-strip {
  padding: 0 0 clamp(3.5rem, 8vw, 5rem);
}

.download-strip__inner {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  padding: clamp(2rem, 5vw, 3rem);
  background: linear-gradient(180deg, #7ae092 0%, var(--lime) 40%, var(--lime-dark) 100%);
  border: 4px solid var(--navy-deep);
  box-shadow: 0 8px 0 color-mix(in srgb, var(--navy-deep) 88%, #000), var(--shadow-soft);
}

.download-strip__halftone {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  background-image: radial-gradient(circle, color-mix(in srgb, var(--navy-deep) 85%, transparent) 1px, transparent 1px);
  background-size: 8px 8px;
  pointer-events: none;
}

.download-strip__content {
  position: relative;
  text-align: center;
  max-width: 520px;
  margin-inline: auto;
}

.download-strip__title {
  margin: 0 0 0.5rem;
  font-family: "Varela Round", sans-serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: #0a0f1a;
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.35);
}

.download-strip__text {
  margin: 0 0 1.5rem;
  color: #0f172a;
  font-weight: 600;
}

.download-strip__actions .btn--cta {
  box-shadow: 0 5px 0 var(--navy-deep);
  border-color: #0f172a;
  background: #ffffff;
  color: var(--navy-deep);
}

.download-strip__actions .btn--cta:hover {
  box-shadow: 0 7px 0 var(--navy-deep);
  filter: none;
  background: var(--sky-tint);
}

[data-theme="dark"] .download-strip__inner {
  border-color: #0f172a;
  box-shadow: 0 8px 0 #0f172a;
  background: linear-gradient(180deg, var(--lime) 0%, var(--lime-dark) 100%);
}

[data-theme="dark"] .download-strip__halftone {
  opacity: 0.2;
  background-image: radial-gradient(circle, #0f172a 1px, transparent 1px);
}

[data-theme="dark"] .download-strip__actions .btn--cta {
  background: linear-gradient(180deg, var(--lime) 0%, var(--lime-dark) 100%);
  color: #061018;
  border-color: #0f172a;
  box-shadow: 0 5px 0 #14532d;
}

[data-theme="dark"] .download-strip__actions .btn--cta:hover {
  box-shadow: 0 7px 0 #14532d;
  background: linear-gradient(180deg, var(--lime) 0%, var(--lime-dark) 100%);
}

/* Footer */
.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 3px solid color-mix(in srgb, var(--periwinkle) 35%, transparent);
  background: var(--bg-elevated);
}

.site-footer__grid {
  display: grid;
  gap: 1.5rem;
  text-align: center;
}

@media (min-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1fr auto;
    text-align: left;
    align-items: start;
  }

  .site-footer__copy {
    grid-column: 1 / -1;
  }
}

.site-footer__logo {
  height: 48px;
  width: auto;
  margin: 0 auto 0.75rem;
}

@media (min-width: 720px) {
  .site-footer__logo {
    margin: 0 0 0.75rem;
  }
}

.site-footer__tagline {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 320px;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-weight: 700;
}

.site-footer__links a {
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-footer__copy {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--navy-deep) 28%, transparent);
  backdrop-filter: blur(10px);
  cursor: pointer;
}

[data-theme="dark"] .modal__backdrop {
  background: rgba(8, 10, 20, 0.65);
}

.modal__card {
  position: relative;
  width: min(420px, 100%);
  padding: 2rem 1.75rem 1.75rem;
  border-radius: 28px;
  background: var(--bg-card);
  border: 4px solid #fff;
  box-shadow: 0 0 0 4px var(--periwinkle), var(--shadow-soft);
  animation: modal-pop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="dark"] .modal__card {
  box-shadow: 0 0 0 4px var(--periwinkle), 0 24px 80px rgba(0, 0, 0, 0.4);
}

@keyframes modal-pop {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(12px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

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

.modal__accent {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, var(--periwinkle), var(--cornflower));
  border: 3px solid var(--navy-deep);
  color: #fff;
  box-shadow: 0 6px 0 var(--navy-deep);
}

.modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 3px solid var(--border-inner);
  background: var(--bg-elevated);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.modal__close:hover {
  border-color: var(--periwinkle);
}

.modal__title {
  margin: 1.25rem 0 0.5rem;
  font-family: "Varela Round", sans-serif;
  font-size: 1.5rem;
  text-align: center;
  color: var(--navy-deep);
}

[data-theme="dark"] .modal__title {
  color: var(--text);
}

.modal__body {
  margin: 0 0 1.25rem;
  text-align: center;
  color: var(--text-muted);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: min(300px, 86vw);
    height: 100vh;
    padding: 5rem 1.25rem 1.5rem;
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    background: var(--bg-elevated);
    border-left: 4px solid var(--periwinkle);
    box-shadow: -12px 0 40px rgba(46, 74, 158, 0.18);
    transform: translateX(100%);
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .nav-panel.is-open {
    transform: translateX(0);
  }

  .nav-primary {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .nav-primary a {
    padding: 0.75rem 0.5rem;
    border-radius: 12px;
    border-bottom: none;
  }

  .nav-primary a:hover {
    background: color-mix(in srgb, var(--periwinkle) 18%, transparent);
  }

  .nav-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-actions .btn {
    justify-content: center;
  }

  body.nav-lock {
    overflow: hidden;
  }

  [data-theme="dark"] .nav-panel {
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.35);
  }
}