/* Match Tile Challenge — brand-forward landing (vibrant green / sticker pop, per reference art) */

:root {
  --green: #45b67c;
  --green-dark: #2f8f5c;
  --green-deep: #1e4d36;
  --yellow: #ffdd2d;
  --yellow-deep: #e6b800;
  --blue: #4db8ff;
  --pink: #e84a9a;
  --ink: #1a1207;
  --cream: #f6fff8;
  --shadow-ink: rgba(26, 18, 7, 0.35);
  --font-display: "Fredoka", system-ui, sans-serif;
  --font-body: "Nunito", system-ui, sans-serif;
  --radius-pill: 999px;
  --radius-card: 22px;
  --transition: 180ms ease;
  /* Vertical rhythm — roomier modules */
  --space-page-x: clamp(1.25rem, 4vw, 2.25rem);
  --space-section-y: clamp(3.5rem, 8vw, 6rem);
  --space-hero-y: clamp(2rem, 5vw, 3.5rem);
  --space-hero-bottom: clamp(4rem, 10vw, 6.5rem);
  --space-stack: clamp(1.5rem, 3vw, 2.25rem);
}

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

html {
  scroll-behavior: smooth;
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.62;
  color: var(--ink);
  background: var(--green);
  min-height: 100vh;
}

/* Halftone-style dots on page chrome */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
  background-image: radial-gradient(circle at 1px 1px, var(--ink) 1px, transparent 0);
  background-size: 14px 14px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 2000;
  padding: 0.75rem 1rem;
  background: var(--yellow);
  color: var(--ink);
  font-weight: 700;
  border-radius: var(--radius-pill);
  border: 3px solid var(--ink);
}

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

/* --- Header / nav (floating sticker bar) --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem var(--space-page-x) 0;
}

.nav-bar {
  position: relative;
  z-index: 2;
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.15rem;
  padding: 0.85rem 1.25rem 0.85rem 1.35rem;
  background: var(--cream);
  border: 4px solid var(--pink);
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 0 var(--ink), 0 10px 24px var(--shadow-ink);
  transition: box-shadow var(--transition), transform var(--transition);
}

.site-header.is-scrolled .nav-bar {
  box-shadow: 0 4px 0 var(--ink), 0 8px 20px var(--shadow-ink);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
}

.nav-brand__icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: cover;
  border: 3px solid var(--ink);
  box-shadow: 0 3px 0 rgba(26, 18, 7, 0.2);
  flex-shrink: 0;
}

.nav-brand__text {
  max-width: 200px;
}

@media (min-width: 480px) {
  .nav-brand__text {
    max-width: none;
  }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  display: none;
  padding: 0.55rem 1.05rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
  background: rgba(69, 182, 124, 0.15);
}

.nav-link:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.nav-link--cta {
  background: var(--green);
  color: #fff;
  border: 3px solid var(--ink);
  box-shadow: 0 3px 0 var(--green-dark);
}

.nav-link--cta:hover {
  background: var(--green-dark);
  filter: brightness(1.02);
}

@media (min-width: 768px) {
  .nav-link {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 3px solid var(--ink);
  background: var(--yellow);
  cursor: pointer;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  transition: transform var(--transition);
}

.nav-toggle:hover {
  transform: scale(1.03);
}

.nav-toggle__bar {
  width: 20px;
  height: 3px;
  background: var(--ink);
  border-radius: 2px;
}

@media (max-width: 767px) {
  .nav-menu {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.65rem);
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    padding: 1rem 1.1rem;
    background: var(--cream);
    border: 4px solid var(--ink);
    border-radius: 20px;
    box-shadow: 0 8px 0 var(--ink);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }

  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-menu .nav-link {
    display: flex;
    justify-content: center;
  }
}

/* --- Hero --- */
.hero {
  position: relative;
  z-index: 1;
  padding: var(--space-hero-y) var(--space-page-x) var(--space-hero-bottom);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 80% at 50% 0%, #5ad08f 0%, var(--green) 45%, var(--green-dark) 100%);
  z-index: -1;
}

.hero__inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-stack);
  align-items: center;
}

@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: clamp(2.5rem, 5vw, 4rem);
  }
}

.hero__eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.45rem 1rem;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--yellow);
  border: 3px solid var(--ink);
  border-radius: var(--radius-pill);
  box-shadow: 0 3px 0 var(--ink);
}

.hero__title-wrap {
  margin-bottom: 0.25rem;
  filter: drop-shadow(0 8px 0 rgba(26, 18, 7, 0.2));
}

.hero__title-img {
  display: block;
  width: min(100%, 560px);
  height: auto;
  border-radius: 18px;
  border: 4px solid var(--ink);
  box-shadow: 0 8px 0 var(--ink);
}

.hero__tagline {
  margin: 1.35rem 0 2rem;
  max-width: 36rem;
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--cream);
  text-shadow: 0 2px 0 var(--green-deep);
}

.hero__cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Phone mockup */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  perspective: 900px;
}

.phone-frame {
  position: relative;
  width: min(78vw, 300px);
  transform: rotate(-6deg);
  border-radius: 36px;
  padding: 12px;
  background: linear-gradient(160deg, #2a2a2a, #111);
  border: 5px solid var(--ink);
  box-shadow: 0 16px 0 var(--ink), 0 28px 48px var(--shadow-ink);
  transition: transform 260ms ease;
}

@media (min-width: 960px) {
  .phone-frame {
    width: min(320px, 28vw);
    transform: rotate(-8deg) translateY(8px);
  }
}

.phone-frame:hover {
  transform: rotate(-4deg) scale(1.02);
}

@media (prefers-reduced-motion: reduce) {
  .phone-frame:hover {
    transform: rotate(-6deg);
  }
}

.phone-frame__shot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 26px;
  border: 3px solid var(--ink);
}

.phone-frame__glare {
  position: absolute;
  inset: 18px 14px auto 14px;
  height: 28%;
  border-radius: 20px 20px 40% 40%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent);
  pointer-events: none;
}

.hero__burst {
  position: absolute;
  width: 48px;
  height: 48px;
  border: 4px solid var(--ink);
  border-radius: 10px;
  transform: rotate(12deg);
}

.hero__burst--tl {
  top: 4%;
  left: 6%;
  background: linear-gradient(135deg, var(--blue), #1e6fd6);
}

.hero__burst--br {
  bottom: 2%;
  right: 8%;
  background: linear-gradient(135deg, var(--yellow), #ff9a3c);
  transform: rotate(-18deg);
}

@media (min-width: 960px) {
  .hero__burst {
    width: 56px;
    height: 56px;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 4px solid var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  box-shadow: 0 5px 0 var(--ink);
}

.btn:active {
  transform: translateY(2px);
  box-shadow: 0 3px 0 var(--ink);
}

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

.btn__icon {
  width: 20px;
  height: 20px;
  stroke-width: 2.5px;
}

.btn--primary {
  background: linear-gradient(180deg, #5fe397, var(--green));
  color: #fff;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.btn--primary:hover {
  filter: brightness(1.05);
}

.btn--secondary {
  background: linear-gradient(180deg, #ff6b6b, #e63d3d);
  color: #fff;
}

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

.btn--yellow {
  background: linear-gradient(180deg, #fff3a0, var(--yellow));
  color: var(--ink);
}

.btn--lg {
  font-size: 1.05rem;
  padding: 1rem 1.5rem;
}

/* --- Sections --- */
.section {
  position: relative;
  z-index: 1;
  padding: var(--space-section-y) var(--space-page-x);
}

.section__inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section--features {
  background: var(--cream);
  border-top: 5px solid var(--ink);
  border-bottom: 5px solid var(--ink);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  text-align: center;
  margin: 0 0 0.85rem;
  color: var(--ink);
}

.section__lead {
  text-align: center;
  max-width: 38rem;
  margin: 0 auto 2.75rem;
  font-weight: 600;
  color: #3d3428;
  line-height: 1.65;
}

.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    gap: 2rem;
  }
}

.feature-card {
  background: #fff;
  border-radius: var(--radius-card);
  border: 4px solid var(--ink);
  padding: 1.65rem 1.5rem;
  box-shadow: 0 6px 0 var(--ink);
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 9px 0 var(--ink);
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  margin-bottom: 1.1rem;
  border-radius: 16px;
  background: var(--yellow);
  border: 3px solid var(--ink);
  color: var(--ink);
}

.feature-card__icon svg {
  width: 26px;
  height: 26px;
  stroke-width: 2.5px;
}

.feature-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 0.65rem;
}

.feature-card__text {
  margin: 0;
  font-size: 0.98rem;
  color: #3d3428;
  line-height: 1.65;
}

/* Screenshots */
.section--shots {
  background: linear-gradient(180deg, #3daf76, var(--green));
}

.section--shots .section__title,
.section--shots .section__lead {
  color: var(--cream);
}

.section--shots .section__lead {
  text-shadow: 0 1px 0 var(--green-deep);
}

.inline-code {
  font-family: ui-monospace, monospace;
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.12);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

.shot-strip {
  display: flex;
  gap: 1.35rem;
  overflow-x: auto;
  padding: 0.5rem 0 1.25rem;
  margin-top: 0.5rem;
  scroll-snap-type: x mandatory;
}

.shot-card {
  flex: 0 0 auto;
  margin: 0;
  scroll-snap-align: start;
  border-radius: 20px;
  border: 4px solid var(--ink);
  overflow: hidden;
  box-shadow: 0 8px 0 var(--ink);
}

.shot-card img {
  display: block;
  width: min(72vw, 280px);
  height: auto;
  vertical-align: middle;
}

/* Download band */
.section--download {
  background: var(--green-deep);
  border-top: 5px solid var(--ink);
}

.section__inner--download {
  text-align: center;
  padding-block: 0.5rem;
}

.section__title--on-dark {
  color: var(--yellow);
  text-shadow: 0 3px 0 var(--ink);
}

.section__lead--on-dark {
  color: var(--cream);
  margin-bottom: 1.35rem;
  line-height: 1.65;
}

.download__brand {
  margin: 0 0 1.75rem;
}

.download__icon {
  display: inline-block;
  border-radius: 18px;
  border: 4px solid var(--ink);
  box-shadow: 0 6px 0 var(--ink);
}

.download__buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
}

@media (min-width: 560px) {
  .download__buttons {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
  }
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--ink);
  color: #d7cec4;
  padding: 2.75rem var(--space-page-x);
  border-top: 4px solid var(--pink);
}

.site-footer__inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.site-footer__copy {
  margin: 0;
  font-size: 0.95rem;
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.5rem;
  justify-content: center;
}

.site-footer a {
  color: var(--yellow);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.site-footer a:hover {
  border-bottom-color: var(--yellow);
}

.site-footer a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 8, 6, 0.55);
  cursor: pointer;
}

.modal__panel {
  position: relative;
  width: min(100%, 420px);
  background: var(--cream);
  border: 5px solid var(--ink);
  border-radius: 24px;
  padding: 2rem 1.75rem;
  box-shadow: 0 12px 0 var(--ink);
  animation: pop-in 220ms ease;
}

@keyframes pop-in {
  from {
    transform: scale(0.92);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

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

.modal__close {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 3px solid var(--ink);
  background: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform var(--transition);
}

.modal__close:hover {
  transform: scale(1.05);
}

.modal__close svg {
  width: 20px;
  height: 20px;
}

.modal__title {
  font-family: var(--font-display);
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
}

.modal__text {
  margin: 0 0 1.5rem;
  color: #3d3428;
  line-height: 1.65;
}