/* ============================================================
   Quicks-style landing — design tokens taken from quicks.ai:
   Inter (headings/UI) + Hedvig Letters Serif (supporting text),
   ink #262626, surfaces rgba(38,38,38,.05), radii 12/24/32/40,
   pill buttons, soft blue accent, pastel gradient covers.
   ============================================================ */

:root {
  --ink: #262626;
  --ink-70: rgba(38, 38, 38, 0.7);
  --ink-60: rgba(38, 38, 38, 0.6);
  --ink-40: rgba(38, 38, 38, 0.4);
  --surface: rgba(38, 38, 38, 0.05);
  --surface-strong: rgba(38, 38, 38, 0.1);
  --page-alt: #f4f4f5;
  --blue: #5b9bd5;
  --link: #3e6fde;
  --green: #2f9e44;
  --green-soft: rgba(94, 213, 101, 0.16);
  --wa-green: #d9fdd3;
  --blue-soft: rgba(91, 155, 213, 0.16);
  --radius-sm: 12px;
  --radius-md: 24px;
  --radius-lg: 32px;
  --radius-xl: 40px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Hedvig Letters Serif", Georgia, "Times New Roman", serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ---------- Type ---------- */

h1 {
  font-size: clamp(40px, 6.5vw, 62px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(30px, 4.5vw, 40px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
}

.serif {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--ink-60);
  font-size: 20px;
  line-height: 1.55;
}

.lead { max-width: 640px; margin: 24px auto 0; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 9999px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.btn .arr { transition: transform 0.15s ease; }
.btn:hover .arr { transform: translateX(4px); }
.btn:active { transform: scale(0.98); }

.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; }

.btn-light { background: var(--surface); color: var(--ink); }
.btn-light:hover { background: var(--surface-strong); }

.btn-white { background: #fff; color: var(--ink); box-shadow: 0 1px 2px rgba(38, 38, 38, 0.08); }
.btn-white:hover { box-shadow: 0 4px 14px rgba(38, 38, 38, 0.12); }

/* ---------- Header ---------- */

.site-header { padding: 20px 0; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo img { height: 32px; width: auto; }

.site-footer .logo img { height: 28px; }

/* ---------- Decorative shapes ---------- */

.deco { pointer-events: none; user-select: none; }

.deco-asterisk {
  position: absolute;
  width: 64px;
  top: -26px;
  right: 8%;
  transform: rotate(14deg);
}

.h2-wrap { position: relative; }

/* burst peeks out from behind the doc mockup */
.split-visual-doc { position: relative; }

.split-visual-doc .deco-burst {
  position: absolute;
  width: 72px;
  top: -34px;
  right: 10%;
  transform: rotate(12deg);
  z-index: 0;
}

.split-visual-doc .doc-card { position: relative; z-index: 1; }

/* ---------- Block 1: Hero ---------- */

.hero { padding: 72px 0 96px; }

.hero-head {
  position: relative;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.hero-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 64px;
}

.hero-card {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.hero-card p { color: var(--ink-70); max-width: 420px; }
.hero-card .btn { margin-top: 10px; }

.hero-card-art {
  width: 100%;
  min-height: 128px;
  margin-bottom: 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

/* mini chat preview */
.mini-bubble {
  font-size: 14px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 18px;
  width: fit-content;
}

.mini-bubble-ai {
  background: #fff;
  border-bottom-left-radius: 6px;
  box-shadow: 0 1px 2px rgba(38, 38, 38, 0.06);
}

.mini-bubble-me {
  background: var(--wa-green);
  color: var(--ink);
  border-bottom-right-radius: 6px;
  align-self: flex-end;
}

/* mini book fan */
.hero-card-art-books {
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 0;
}

/* ---------- Pastel gradient covers ---------- */

.cover {
  width: 78px;
  height: 108px;
  border-radius: 10px;
  display: flex;
  align-items: flex-end;
  padding: 10px;
  color: rgba(255, 255, 255, 0.95);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 24px rgba(38, 38, 38, 0.16);
}

.cover-1 { background: linear-gradient(160deg, #ffe29a, #f5b942); transform: rotate(-10deg) translateY(6px); }
.cover-2 { background: linear-gradient(160deg, #9f7bec, #7048c9); z-index: 1; }
.cover-3 { background: linear-gradient(160deg, #7fe3a1, #3cba6f); transform: rotate(10deg) translateY(6px); }
.cover-4 { background: linear-gradient(160deg, #f79ba2, #e05c68); }
.cover-5 { background: linear-gradient(160deg, #f6b26b, #e8833a); }
.cover-6 { background: linear-gradient(160deg, #8ecdf2, #4b93d1); }

/* ---------- Split sections (blocks 2 & 3) ---------- */

.split { padding: 96px 0; }

.split-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.split-reverse .split-text { order: 2; }
.split-reverse .split-visual { order: 1; }

.split-text > .serif { margin-top: 20px; }
.split-text .btn { margin-top: 32px; }

.feature-list {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink-70);
  text-wrap: pretty; /* no single-word orphan lines when wrapping */
}

.feature-list li::before {
  content: "✳";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 15px;
  color: var(--blue);
}

.feature-list li strong { color: var(--ink); font-weight: 600; }

/* ---------- Chat mockup ---------- */

.chat-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(38, 38, 38, 0.12);
  padding: 24px;
  max-width: 460px;
  margin: 0 auto;
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--surface);
}

.chat-name { font-weight: 600; font-size: 15px; }

.chat-status {
  font-size: 13px;
  color: var(--ink-60);
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ecb5c;
  display: inline-block;
}

.chat-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 0;
}

.msg {
  max-width: 85%;
  padding: 11px 16px;
  border-radius: 18px;
  font-size: 15px;
  line-height: 1.45;
}

.msg-ai {
  background: var(--surface);
  border-bottom-left-radius: 6px;
}

.msg-me {
  background: var(--wa-green);
  color: var(--ink);
  align-self: flex-end;
  border-bottom-right-radius: 6px;
}

.msg-tip {
  background: var(--blue-soft);
  color: var(--ink-70);
  border-radius: 14px;
  font-size: 14px;
}

.msg-tip span {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 9999px;
  margin-right: 6px;
  transform: translateY(-1px);
}

.msg-tip em { font-style: normal; font-weight: 600; color: var(--ink); }

.chat-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface);
  border-radius: 9999px;
  padding: 13px 20px;
  font-size: 15px;
  color: var(--ink-40);
}

.chat-input .send { color: var(--ink-60); font-size: 18px; }

/* ---------- Avatars ---------- */

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.avatar-tutor { background: linear-gradient(150deg, #8ecdf2, #5b9bd5); }
.avatar-1 { background: linear-gradient(150deg, #f5b942, #e8833a); }
.avatar-2 { background: linear-gradient(150deg, #7fe3a1, #3cba6f); }
.avatar-3 { background: linear-gradient(150deg, #9f7bec, #7048c9); }

/* ---------- Doc / workspace mockup ---------- */

.doc-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(38, 38, 38, 0.12);
  padding: 32px;
  max-width: 480px;
  margin: 0 auto;
}

.doc-time {
  color: var(--blue);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

.doc-title { font-size: 19px; font-weight: 600; line-height: 1.35; }

.doc-points {
  list-style: none;
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.doc-points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--ink-70);
}

.doc-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-40);
}

.doc-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--surface);
}

.covers-row { display: flex; gap: 8px; }

.covers-row .cover {
  width: 52px;
  height: 72px;
  border-radius: 8px;
  padding: 6px;
  font-size: 9px;
  box-shadow: 0 6px 16px rgba(38, 38, 38, 0.14);
}

.doc-foot-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-60);
  text-align: right;
  line-height: 1.45;
}

/* ---------- Block 4: Community ---------- */

.community {
  background: var(--page-alt);
  border-radius: var(--radius-xl);
  margin: 24px;
  padding: 96px 0;
  text-align: center;
}

.community > .container > .serif {
  max-width: 560px;
  margin: 20px auto 0;
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
  text-align: left;
}

.t-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}

.t-card blockquote { font-size: 17px; line-height: 1.6; }

.t-card figcaption {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 15px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--surface);
  margin-top: 24px;
  padding: 40px 0 48px;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.footer-inner .logo { font-size: 20px; }

.footer-mid { display: flex; flex-direction: column; gap: 12px; }

.footer-links { display: flex; gap: 24px; }

.footer-links a {
  color: var(--link);
  text-decoration: none;
  font-weight: 500;
}

.footer-links a:hover { text-decoration: underline; }

.footer-mid p { color: var(--ink-60); font-size: 15px; }
.footer-mid p a { color: var(--ink-60); }

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.lang-pill {
  background: var(--surface);
  border-radius: 9999px;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
}

.footer-right p { color: var(--ink-60); font-size: 15px; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1023px) {
  .split { padding: 72px 0; }
  .split-inner { gap: 48px; }
}

@media (max-width: 900px) {
  .hero { padding: 48px 0 72px; }

  .hero-cards { grid-template-columns: 1fr; margin-top: 48px; }

  .split-inner { grid-template-columns: 1fr; }

  /* text first, mockup second on mobile for both blocks */
  .split-reverse .split-text { order: 1; }
  .split-reverse .split-visual { order: 2; }

  .deco-asterisk { width: 48px; top: -34px; right: 2%; }
  .split-visual-doc .deco-burst { width: 52px; top: -24px; right: 4%; }

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

  .community { margin: 16px; padding: 64px 0; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-right { align-items: flex-start; }
}

@media (max-width: 520px) {
  .serif { font-size: 18px; }

  .hero-card { padding: 28px 22px; }

  .chat-card, .doc-card { padding: 20px; }

  .doc-foot { flex-direction: column; align-items: flex-start; }
  .doc-foot-label { text-align: left; }

  .btn { padding: 13px 22px; font-size: 15px; }

  .site-header .btn { padding: 11px 20px; }
}