:root {
  --krg-ink: #1d2820;
  --krg-muted: #677067;
  --krg-cream: #f5f1e8;
  --krg-paper: #fffdf8;
  --krg-sage: #cbd7be;
  --krg-sage-dark: #2d4a37;
  --krg-line: #dcd9cf;
  --krg-sun: #f2c96d;
  --krg-night: #232d40;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--krg-cream);
  color: var(--krg-ink);
  font-family: "DM Sans", sans-serif;
}

button,
a {
  font: inherit;
}

.krg {
  min-height: 100vh;
  overflow: hidden;
}

.krg__hero {
  position: relative;
  min-height: 580px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
  background:
    radial-gradient(circle at 12% 20%, rgba(203, 215, 190, 0.85), transparent 28%),
    radial-gradient(circle at 88% 70%, rgba(242, 201, 109, 0.3), transparent 24%),
    var(--krg-paper);
}

.krg__hero::before,
.krg__hero::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(45, 74, 55, 0.18);
  border-radius: 50%;
}

.krg__hero::before {
  width: 320px;
  height: 320px;
  left: -170px;
  bottom: -80px;
}

.krg__hero::after {
  width: 190px;
  height: 190px;
  right: -80px;
  top: 60px;
}

.krg__eyebrow,
.krg__kicker {
  margin: 0 0 18px;
  color: var(--krg-sage-dark);
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.krg__hero h1,
.krg h2 {
  font-family: "Newsreader", serif;
  font-weight: 400;
  letter-spacing: -0.04em;
}

.krg__hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(4rem, 10vw, 7.7rem);
  line-height: 0.84;
}

.krg__hero h1 em {
  color: var(--krg-sage-dark);
  font-weight: 400;
}

.krg__hero > p {
  max-width: 570px;
  margin: 34px auto 32px;
  color: var(--krg-muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.krg__start {
  display: inline-flex;
  gap: 40px;
  align-items: center;
  padding: 15px 22px;
  border-bottom: 1px solid var(--krg-ink);
  color: var(--krg-ink);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.krg__builder,
.krg__results {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 100px 0;
}

.krg__section-heading {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 46px;
}

.krg__number {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--krg-sage-dark);
  border-radius: 50%;
  font-size: 0.75rem;
}

.krg__section-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(2.7rem, 5vw, 4.2rem);
  line-height: 1;
}

.krg__section-heading p:last-child {
  margin: 0;
  color: var(--krg-muted);
  line-height: 1.6;
}

.krg__products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.krg__product {
  position: relative;
  display: flex;
  min-height: 320px;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--krg-line);
  border-radius: 4px;
  background: var(--krg-paper);
  color: var(--krg-ink);
  cursor: pointer;
  text-align: left;
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.krg__product:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(29, 40, 32, 0.08);
}

.krg__product.is-selected {
  border-color: var(--krg-sage-dark);
  box-shadow: inset 0 0 0 1px var(--krg-sage-dark);
}

.krg__product-image {
  position: relative;
  height: 210px;
  overflow: hidden;
  background: #ecebe5;
}

.krg__product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

.krg__product:hover img {
  transform: scale(1.035);
}

.krg__check {
  position: absolute;
  z-index: 2;
  top: 14px;
  right: 14px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid rgba(29, 40, 32, 0.45);
  border-radius: 50%;
  background: rgba(255, 253, 248, 0.9);
  font-size: 0;
}

.krg__product.is-selected .krg__check {
  border-color: var(--krg-sage-dark);
  background: var(--krg-sage-dark);
  color: white;
  font-size: 0.85rem;
}

.krg__product-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px;
}

.krg__product-copy small {
  color: var(--krg-muted);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.krg__product-copy strong {
  margin-top: 7px;
  font-family: "Newsreader", serif;
  font-size: 1.28rem;
  font-weight: 500;
  line-height: 1.12;
}

.krg__product-copy span {
  margin-top: auto;
  padding-top: 10px;
  color: var(--krg-muted);
  font-size: 0.78rem;
}

.krg__selection-bar {
  position: sticky;
  z-index: 5;
  bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(700px, calc(100% - 20px));
  margin: 34px auto 0;
  padding: 10px 10px 10px 22px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  background: rgba(29, 40, 32, 0.95);
  box-shadow: 0 16px 40px rgba(29, 40, 32, 0.18);
  color: white;
  backdrop-filter: blur(12px);
}

.krg__selection-bar p {
  margin: 0;
  font-size: 0.86rem;
}

.krg__button {
  display: inline-flex;
  gap: 28px;
  align-items: center;
  padding: 15px 18px;
  border: 0;
  border-radius: 2px;
  background: var(--krg-sage);
  color: var(--krg-ink);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.krg__button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.krg__results {
  border-top: 1px solid var(--krg-line);
}

.krg__view-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0 0 28px 66px;
  border-bottom: 1px solid var(--krg-line);
}

.krg__view-switch button {
  position: relative;
  padding: 18px 20px;
  border: 0;
  background: transparent;
  color: var(--krg-muted);
  cursor: pointer;
  font-family: "Newsreader", serif;
  font-size: 1.45rem;
}

.krg__view-switch button::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: transparent;
}

.krg__view-switch button.is-active {
  color: var(--krg-ink);
}

.krg__view-switch button.is-active::after {
  background: var(--krg-sage-dark);
}

.krg__view-switch small {
  display: block;
  margin-top: 3px;
  font-family: "DM Sans", sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.krg__panel-note {
  max-width: 690px;
  margin: 0 0 30px 66px;
  color: var(--krg-muted);
  line-height: 1.6;
}

.krg__routine-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-left: 66px;
}

.krg__period {
  overflow: hidden;
  border-radius: 5px;
  background: var(--krg-paper);
}

.krg__period-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 28px;
  background: var(--krg-sun);
}

.krg__period--night .krg__period-header {
  background: var(--krg-night);
  color: white;
}

.krg__period--weekly {
  grid-column: 1 / -1;
}

.krg__period--weekly .krg__period-header {
  background: var(--krg-sage);
}

.krg__period-header h3 {
  margin: 0;
  font-family: "Newsreader", serif;
  font-size: 1.65rem;
  font-weight: 400;
}

.krg__period-header span {
  font-size: 1.3rem;
}

.krg__steps {
  list-style: none;
  margin: 0;
  padding: 8px 28px 18px;
}

.krg__step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--krg-line);
}

.krg__step:last-child {
  border-bottom: 0;
}

.krg__step-number {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--krg-line);
  border-radius: 50%;
  color: var(--krg-muted);
  font-size: 0.72rem;
}

.krg__step small {
  color: var(--krg-sage-dark);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.krg__step h4 {
  margin: 5px 0 7px;
  font-size: 0.95rem;
  font-weight: 600;
}

.krg__step p {
  margin: 0;
  color: var(--krg-muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.krg__step-badge {
  display: inline-block;
  margin-top: 9px;
  padding: 4px 8px;
  border-radius: 30px;
  background: var(--krg-cream);
  color: var(--krg-sage-dark);
  font-size: 0.67rem;
  font-weight: 600;
}

.krg__tips {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 18px;
  margin: 36px 0 0 66px;
  padding: 28px;
  border: 1px solid var(--krg-sage);
  background: rgba(203, 215, 190, 0.18);
}

.krg__tip-icon {
  font-size: 2rem;
}

.krg__tips h3 {
  margin: 0 0 12px;
  font-family: "Newsreader", serif;
  font-size: 1.5rem;
  font-weight: 400;
}

.krg__tips ul {
  margin: 0;
  padding-left: 18px;
  color: var(--krg-muted);
  font-size: 0.86rem;
  line-height: 1.8;
}

.krg__restart {
  margin: 35px 0 0 66px;
  text-align: center;
}

.krg__restart button {
  padding: 12px;
  border: 0;
  border-bottom: 1px solid var(--krg-ink);
  background: transparent;
  color: var(--krg-ink);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.krg__footer {
  padding: 34px 20px;
  background: var(--krg-ink);
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
}

.krg__footer p {
  max-width: 680px;
  margin: auto;
  font-size: 0.75rem;
  line-height: 1.6;
}

@media (max-width: 900px) {
  .krg__products {
    grid-template-columns: repeat(2, 1fr);
  }

  .krg__routine-grid {
    grid-template-columns: 1fr;
  }

  .krg__period--weekly {
    grid-column: auto;
  }
}

@media (max-width: 600px) {
  .krg__hero {
    min-height: 520px;
  }

  .krg__hero h1 {
    font-size: clamp(3.6rem, 18vw, 5rem);
  }

  .krg__builder,
  .krg__results {
    width: min(100% - 24px, 1180px);
    padding: 70px 0;
  }

  .krg__section-heading {
    grid-template-columns: 1fr;
  }

  .krg__number {
    margin-bottom: 4px;
  }

  .krg__products {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .krg__product {
    min-height: 250px;
  }

  .krg__product-image {
    height: 150px;
  }

  .krg__product-copy {
    padding: 13px;
  }

  .krg__product-copy strong {
    font-size: 1rem;
  }

  .krg__selection-bar {
    width: 100%;
    padding-left: 14px;
  }

  .krg__selection-bar p {
    max-width: 90px;
    font-size: 0.72rem;
  }

  .krg__button {
    gap: 12px;
    padding: 14px 12px;
    font-size: 0.68rem;
  }

  .krg__view-switch,
  .krg__panel-note,
  .krg__routine-grid,
  .krg__tips,
  .krg__restart {
    margin-left: 0;
  }

  .krg__view-switch button {
    padding: 15px 8px;
    font-size: 1.15rem;
  }

  .krg__period-header,
  .krg__steps {
    padding-right: 20px;
    padding-left: 20px;
  }

  .krg__tips {
    grid-template-columns: 1fr;
  }
}

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

  .krg__product,
  .krg__product img {
    transition: none;
  }
}