:root {
  --ink: #1d2142;
  --muted: #676b86;
  --cream: #fffaf0;
  --paper: #ffffff;
  --yellow: #ffc857;
  --coral: #ff7163;
  --purple: #6c63d8;
  --border: #e7e3da;
  --shadow: 0 24px 60px rgba(41, 35, 96, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand__icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--purple);
  border-radius: 12px;
  font-size: 1.25rem;
  transform: rotate(-4deg);
}

nav {
  display: flex;
  gap: 30px;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 650;
}

nav a {
  transition: color 160ms ease;
}

nav a:hover,
nav a:focus-visible {
  color: var(--purple);
}

.hero {
  width: min(1120px, calc(100% - 40px));
  min-height: 650px;
  margin: 0 auto;
  padding: 70px 0 100px;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  align-items: center;
  gap: 90px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero__subtitle {
  display: inline-block;
  margin-bottom: 22px;
  padding: 7px 13px;
  color: var(--purple);
  background: rgba(108, 99, 216, 0.1);
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 750;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 700px;
  margin-bottom: 24px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.5rem, 7vw, 6.4rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
}

h1 span {
  color: var(--purple);
}

.hero__text {
  max-width: 570px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 1.08rem;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 15px 22px;
  color: white;
  background: var(--ink);
  border: 0;
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(29, 33, 66, 0.22);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.primary-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(29, 33, 66, 0.28);
}

.primary-button:active {
  transform: translateY(0);
}

.primary-button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}

.message {
  min-height: 28px;
  margin: 18px 0 0;
  color: var(--purple);
  font-weight: 750;
}

.piano-card {
  position: relative;
  padding: 96px 40px 38px;
  overflow: hidden;
  background: var(--yellow);
  border: 2px solid var(--ink);
  border-radius: 36px;
  box-shadow: 14px 14px 0 var(--ink);
  transform: rotate(2deg);
}

.piano-card::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  top: -135px;
  right: -80px;
  background: var(--coral);
  border-radius: 50%;
}

.piano-card p {
  margin: 28px 0 0;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.music-note {
  position: absolute;
  z-index: 2;
  font-family: Georgia, serif;
  font-weight: 700;
}

.note-one {
  top: 28px;
  left: 42px;
  color: var(--purple);
  font-size: 3.2rem;
  transform: rotate(-14deg);
}

.note-two {
  top: 36px;
  right: 54px;
  color: white;
  font-size: 2.6rem;
  transform: rotate(10deg);
}

.piano {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  height: 220px;
  overflow: hidden;
  background: white;
  border: 4px solid var(--ink);
  border-radius: 13px;
  box-shadow: 0 12px 0 rgba(29, 33, 66, 0.16);
}

.white-key {
  border-right: 2px solid var(--ink);
}

.white-key:last-of-type {
  border-right: 0;
}

.black-key {
  position: absolute;
  top: 0;
  width: 10%;
  height: 58%;
  background: var(--ink);
  border-radius: 0 0 7px 7px;
}

.black-key--1 { left: 9.2%; }
.black-key--2 { left: 23.5%; }
.black-key--3 { left: 52%; }
.black-key--4 { left: 66.3%; }
.black-key--5 { left: 80.6%; }

.video-section {
  padding: 110px max(20px, calc((100% - 1120px) / 2));
  display: grid;
  grid-template-columns: 0.65fr 1fr;
  align-items: center;
  gap: 70px;
  color: white;
  background: var(--ink);
}

.video-section__copy p:last-child {
  max-width: 430px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.68);
}

.video-section .eyebrow {
  color: var(--yellow);
}

.video-window {
  overflow: hidden;
  background: #10132a;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  box-shadow: 16px 16px 0 var(--purple);
}

.video-window__bar {
  height: 48px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #292d52;
}

.video-window__bar span {
  width: 11px;
  height: 11px;
  background: var(--coral);
  border-radius: 50%;
}

.video-window__bar span:nth-child(2) {
  background: var(--yellow);
}

.video-window__bar span:nth-child(3) {
  background: #70d6a7;
}

.video-window__bar p {
  margin: 0 0 0 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.video-window video {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  object-fit: contain;
  background: #080a18;
}

.lessons {
  padding: 110px max(20px, calc((100% - 1120px) / 2));
  background: var(--paper);
}

.section-heading {
  max-width: 650px;
  margin-bottom: 52px;
}

h2 {
  margin-bottom: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.lesson-card {
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.lesson-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.lesson-card__number {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--coral);
  font-size: 0.8rem;
  font-weight: 850;
}

.lesson-card h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
}

.lesson-card p {
  margin-bottom: 0;
  color: var(--muted);
}

footer {
  padding: 28px max(20px, calc((100% - 1120px) / 2));
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  background: var(--ink);
  font-size: 0.86rem;
}

footer p {
  margin: 0;
}

footer span {
  color: var(--coral);
}

@media (max-width: 800px) {
  nav {
    display: none;
  }

  .hero {
    padding-top: 40px;
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .video-section {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .piano-card {
    max-width: 520px;
  }

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

@media (max-width: 480px) {
  .site-header,
  .hero {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: 3.15rem;
  }

  .piano-card {
    padding: 78px 22px 28px;
    border-radius: 26px;
    box-shadow: 8px 8px 0 var(--ink);
  }

  .piano {
    height: 170px;
  }

  .video-window {
    box-shadow: 8px 8px 0 var(--purple);
  }

  footer {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}