@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&display=swap');

:root {
  --ink-900: #101b2d;
  --ink-700: #3b4a61;
  --ink-500: #63748d;
  --surface-100: #f3f7fb;
  --surface-200: #eaf1f8;
  --card: #ffffff;
  --brand: #0a7b72;
  --brand-deep: #0f4d63;
  --accent: #ff7a3e;
  --accent-strong: #ef476f;
  --max-width: 1180px;
  --header-font: 'Fraunces', serif;
  --body-font: 'Space Grotesk', sans-serif;
  --shadow-soft: 0 18px 42px rgba(13, 27, 42, 0.08);
}

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

html,
body {
  overflow-x: hidden;
}

body {
  font-family: var(--body-font);
  color: var(--ink-900);
  background:
    radial-gradient(820px 420px at 95% -5%, rgba(16, 185, 129, 0.16), transparent 64%),
    radial-gradient(680px 340px at -10% 12%, rgba(14, 165, 233, 0.15), transparent 58%),
    linear-gradient(180deg, #f8fbff 0%, #eef5fb 100%);
}

a {
  text-decoration: none;
  transition: all 0.25s ease;
}

ul {
  list-style: none;
}

img {
  width: 100%;
  display: block;
  border-radius: 16px;
}

.section__container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 5rem 1rem;
}

.section__header {
  font-family: var(--header-font);
  font-size: clamp(1.7rem, 3.3vw, 2.7rem);
  line-height: 1.2;
  color: var(--ink-900);
}

.section__subheader {
  margin-top: 1rem;
  color: var(--ink-700);
  font-size: 1rem;
  line-height: 1.75;
}

/* Nav */
nav {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: var(--max-width);
  z-index: 30;
}

.nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 1.15rem;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(14, 23, 42, 0.7);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(9, 15, 29, 0.22);
}

.logo {
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--header-font);
}

.nav__menu__btn {
  color: #eaf2ff;
  font-size: 1.5rem;
  cursor: pointer;
}

.nav__links {
  position: absolute;
  left: 0;
  right: 0;
  top: 72px;
  padding: 1rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  text-align: center;
  background: rgba(14, 23, 42, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transform: translateY(-130%);
  opacity: 0;
  pointer-events: none;
}

.nav__links.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.nav__links a {
  color: #e8eef8;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}

.nav__links a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
}

/* Hero */
.header__container {
  padding-top: 8.4rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.2rem;
  align-items: stretch;
}

.header__image {
  order: 2;
}

.header__image img {
  height: 100%;
  min-height: 560px;
  object-fit: cover;
  border-radius: 26px;
  box-shadow: var(--shadow-soft);
}

.header__content {
  order: 1;
}

.header__content > div {
  height: 100%;
  border-radius: 26px;
  padding: 2.2rem;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-soft);
}

.header__content h1 {
  font-family: var(--header-font);
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  line-height: 1.13;
  letter-spacing: -0.01em;
}

.header__content h1 span {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--brand-deep);
}

.header__lead {
  margin-top: 1rem;
  color: var(--ink-700);
  line-height: 1.72;
  font-size: 1rem;
}

.topup__badge {
  margin-top: 1.15rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #0e4f47;
  border: 1px solid rgba(10, 123, 114, 0.24);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(255, 255, 255, 0.9));
}

.hero__cta {
  margin-top: 1.15rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.started__btn,
.topup__btn {
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font-family: var(--body-font);
  font-weight: 700;
}

.started__btn {
  padding: 0.84rem 1.45rem;
  font-size: 0.95rem;
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%);
  box-shadow: 0 10px 24px rgba(15, 77, 99, 0.28);
}

.started__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(15, 77, 99, 0.35);
}

.topup__btn {
  position: relative;
  overflow: hidden;
  padding: 0.84rem 1rem 0.84rem 1.2rem;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.92rem;
  color: #fff;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-strong) 100%);
  box-shadow: 0 12px 26px rgba(239, 71, 111, 0.34);
}

.topup__btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 8%, rgba(255, 255, 255, 0.34) 44%, transparent 72%);
  transform: translateX(-120%);
  transition: transform 0.55s ease;
}

.topup__btn:hover::before {
  transform: translateX(120%);
}

.topup__btn__text,
.topup__btn__icon {
  position: relative;
  z-index: 1;
}

.topup__btn__icon {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.22);
}

.topup__hint {
  margin-top: 0.75rem;
  color: var(--ink-500);
  font-size: 0.86rem;
}

.hero__stats {
  margin-top: 1.1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 0.65rem;
}

.hero__stat {
  border: 1px solid #d8e4f0;
  border-radius: 12px;
  padding: 0.7rem;
  background: #ffffff;
}

.hero__stat h5 {
  font-size: 0.86rem;
  margin-bottom: 0.35rem;
  color: var(--ink-900);
}

.hero__stat p {
  color: var(--ink-500);
  font-size: 0.78rem;
  line-height: 1.45;
}

/* Sample books */
.samples__container {
  padding-top: 2.2rem;
  scroll-margin-top: 92px;
}

.samples__heading {
  align-items: end;
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  margin-bottom: 2rem;
}

.samples__eyebrow {
  color: var(--brand);
  display: block;
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  margin-bottom: 0.65rem;
  text-transform: uppercase;
}

.samples__heading .section__subheader {
  margin: 0;
}

.samples__grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sample-book {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.94);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-rows: 330px 1fr;
  min-width: 0;
  overflow: hidden;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.sample-book:hover {
  box-shadow: 0 26px 58px rgba(13, 27, 42, 0.14);
  transform: translateY(-6px);
}

.sample-book__cover {
  background:
    radial-gradient(circle at 80% 15%, rgba(255, 255, 255, 0.22), transparent 10rem),
    linear-gradient(145deg, #123b49, #0f766e);
  display: grid;
  overflow: hidden;
  padding: 24px 24px 0;
  place-items: end center;
  position: relative;
}

.sample-book__cover img {
  border-radius: 6px 13px 13px 6px;
  box-shadow: 18px 18px 36px rgba(3, 20, 31, 0.38);
  height: 100%;
  max-width: 220px;
  object-fit: cover;
  transition: transform 260ms ease;
}

.sample-book:hover .sample-book__cover img {
  transform: translateY(-4px) rotate(-1deg);
}

.sample-book__spine {
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.28), rgba(255, 255, 255, 0.1), transparent);
  bottom: 0;
  left: calc(50% - 110px);
  position: absolute;
  top: 24px;
  width: 13px;
}

.sample-book__copy {
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
}

.sample-book__meta {
  color: var(--brand);
  display: flex;
  font-size: 0.68rem;
  font-weight: 800;
  justify-content: space-between;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

.sample-book h3 {
  display: -webkit-box;
  font-family: var(--header-font);
  font-size: 1.35rem;
  line-height: 1.2;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.sample-book__author {
  color: var(--ink-500);
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 0.55rem;
}

.sample-book__description {
  color: var(--ink-700);
  display: -webkit-box;
  font-size: 0.86rem;
  line-height: 1.6;
  margin: 0.9rem 0 1.1rem;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
}

.sample-book__action {
  align-items: center;
  color: var(--brand-deep);
  display: inline-flex;
  font-size: 0.86rem;
  font-weight: 800;
  gap: 8px;
  margin-top: auto;
}

.sample-book__action:hover {
  color: var(--accent-strong);
  gap: 12px;
}

/* Section backgrounds */
.choose__container,
.modern__container,
.craft__container,
.blog_container,
.testimonial__container {
  position: relative;
}

.choose__container::before,
.modern__container::before,
.craft__container::before,
.blog_container::before,
.testimonial__container::before {
  content: '';
  position: absolute;
  inset: 2rem 0 0;
  border-radius: 22px;
  z-index: -1;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-soft);
}

.choose__container,
.modern__container,
.craft__container,
.blog_container,
.testimonial__container {
  padding: 4rem 1.4rem;
}

.choose__container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.7rem;
  align-items: center;
}

.choose__bg {
  display: none;
}

.choose__grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 0.9rem;
}

.choose__card {
  background: #fff;
  border: 1px solid #dbe6f3;
  border-radius: 14px;
  padding: 1rem;
}

.choose__card h4 {
  font-size: 1rem;
  margin-bottom: 0.45rem;
  font-family: var(--header-font);
}

.choose__card p {
  color: var(--ink-700);
  line-height: 1.55;
  font-size: 0.91rem;
}

.choose__image img {
  min-height: 440px;
  object-fit: cover;
}

.offer__container {
  padding-block: 2.4rem;
}

.offer__grid__top {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0.95rem;
  max-width: var(--max-width);
  margin-inline: auto;
}

.offer__grid__top img {
  height: 260px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
}

.offer__grid__top img:nth-child(1) { grid-column: span 3; }
.offer__grid__top img:nth-child(2) { grid-column: span 3; }
.offer__grid__top img:nth-child(3) { grid-column: span 3; }

.offer__content {
  grid-column: span 3;
  background: #fff;
  border: 1px solid #dbe6f3;
  border-radius: 16px;
  padding: 1rem;
}

.offer__content .btn,
.modern__container .btn,
.craft__container .btn {
  margin-top: 1rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-family: var(--body-font);
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%);
  padding: 0.72rem 1.1rem;
}

.offer__content .btn:hover,
.modern__container .btn:hover,
.craft__container .btn:hover {
  filter: brightness(1.05);
}

.modern__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.modern__image {
  min-height: 460px;
  position: relative;
}

.modern__bg {
  display: none;
}

.modern__img-1,
.modern__img-2,
.modern__img-3 {
  position: absolute;
  object-fit: cover;
}

.modern__img-1 {
  width: min(71%, 390px);
  left: 0;
  top: 0;
  height: 300px;
}

.modern__img-2 {
  width: min(42%, 210px);
  right: 0;
  top: 16px;
  height: 180px;
}

.modern__img-3 {
  width: min(52%, 280px);
  right: 0;
  bottom: 0;
  height: 230px;
}

.modern__grid {
  margin-top: 1.35rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 1fr));
  gap: 0.75rem;
}

.modern__card {
  display: flex;
  gap: 0.55rem;
  border: 1px solid #dce8f3;
  border-radius: 12px;
  padding: 0.68rem;
  background: #fff;
}

.modern__card span {
  color: var(--brand);
  font-weight: 700;
}

.modern__card p {
  color: var(--ink-700);
  font-size: 0.88rem;
  line-height: 1.5;
}

.craft__container {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 0.9rem;
  align-items: stretch;
}

.craft__content {
  padding-right: 0.5rem;
}

.craft__image__content {
  height: 100%;
}

.craft__image img {
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
}

.testimonial__container .section__header {
  text-align: center;
}

.swiper {
  margin-top: 1rem;
  padding-bottom: 0.8rem;
}

.testimonial__card {
  padding: 0.6rem;
  text-align: center;
}

.testimonial__card p {
  margin: 0 auto 1rem;
  max-width: 940px;
  padding: 1.2rem;
  border-radius: 14px;
  border: 1px solid #dce8f3;
  background: #fff;
  color: var(--ink-700);
  line-height: 1.7;
  font-size: 1rem;
}

.testimonial__card p span {
  color: var(--ink-900);
  font-weight: 700;
}

.testimonial__card img {
  max-width: 760px;
  margin-inline: auto;
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
}

.blog__grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 0.9rem;
}

.blog__card {
  background: #fff;
  border: 1px solid #dce8f3;
  border-radius: 14px;
  padding: 0.75rem;
  box-shadow: 0 12px 25px rgba(9, 23, 42, 0.06);
}

.blog__card img {
  border-radius: 12px;
}

.blog__card h4 {
  margin-top: 0.65rem;
  text-align: center;
  font-size: 1rem;
  color: var(--ink-900);
}

.footer {
  margin-top: 2rem;
  background: linear-gradient(135deg, #0f172a 0%, #111e33 42%, #133247 100%);
}

.footer__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
  padding-top: 2.8rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.footer__content h4 {
  color: #fff;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.35;
  font-family: var(--header-font);
}

.footer__content p,
.footer__logo p,
.footer__link a {
  color: #d5e5f9;
}

.footer__bar {
  padding-block: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer__logo h4 a {
  color: #fff;
  font-family: var(--header-font);
  font-size: 1.2rem;
}

.footer__nav {
  display: flex;
  gap: 1.1rem;
}

.footer__link a:hover {
  color: #fff;
}

/* Responsive */
@media (max-width: 1080px) {
  .samples__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .header__container {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .header__image {
    order: 1;
  }

  .header__content {
    order: 2;
  }

  .header__image img {
    min-height: 440px;
  }

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

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

  .choose__image img {
    min-height: 360px;
  }

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

  .offer__grid__top img,
  .offer__content {
    grid-column: auto;
  }

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

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

@media (max-width: 760px) {
  nav {
    top: 10px;
  }

  .section__container {
    padding: 3.7rem 0.85rem;
  }

  .header__container {
    padding-top: 6.6rem;
  }

  .samples__heading,
  .samples__grid {
    grid-template-columns: 1fr;
  }

  .samples__heading {
    gap: 0.9rem;
  }

  .sample-book {
    grid-template-rows: 300px 1fr;
  }

  .header__content > div,
  .choose__container,
  .modern__container,
  .craft__container,
  .blog_container,
  .testimonial__container {
    padding: 1rem;
  }

  .choose__grid,
  .modern__grid,
  .blog__grid,
  .craft__container,
  .offer__grid__top {
    grid-template-columns: 1fr;
  }

  .offer__grid__top img {
    height: 240px;
  }

  .modern__image {
    min-height: 330px;
  }

  .modern__img-1 {
    height: 220px;
  }

  .modern__img-2 {
    height: 140px;
  }

  .modern__img-3 {
    height: 170px;
  }

  .footer__bar {
    flex-direction: column;
    align-items: flex-start;
  }
}