/* =========================
   Design tokens
   ========================= */
:root {
  /* Old-site mapping: monochrome palette + neutral gray surfaces */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-soft: #f2f3f5;
  --color-text: #000000;
  --color-text-muted: #b3b3b3;
  --color-border: #eaeaea;
  --color-primary: #000000;
  --color-primary-strong: #000000;
  --color-focus: #666666;

  /* Old-site mapping: Mailchimp-era font stacks */
  --ff-body: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;
  --ff-heading: Arial, "Helvetica Neue", Helvetica, sans-serif;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;

  /* Old-site mapping: 16px body / 150% line-height baseline */
  --fs-body: 1rem;
  --fs-h1: clamp(2rem, 1.5rem + 2vw, 3.4rem);
  --fs-h2: clamp(1.35rem, 1.15rem + 0.9vw, 2rem);
  --lh-body: 1.5;
  --lh-heading: 1.5;
  --measure: 68ch;

  /* Layout */
  /* Old-site mapping: 1224px content width and ~36px side padding */
  --container-max: 76.5rem;
  --section-pad: clamp(0.75rem, 0.5rem + 1vw, 2rem);
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 10px 24px rgba(15, 23, 42, 0.08);
}

/* =========================
   Base
   ========================= */
* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

body {
  /* Old-site mapping: Helvetica Neue stack, black text, 16px/150% */
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  /* Old-site mapping: black, underlined links by default */
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--color-primary-strong);
  text-decoration: underline;
}

h1,
h2,
h3 {
  font-family: var(--ff-heading);
  color: #000000;
  font-weight: 700;
  line-height: var(--lh-heading);
  margin-block: 0 0.55em;
}

h1 {
  font-size: var(--fs-h1);
}

h2 {
  font-size: var(--fs-h2);
}

p {
  margin-block: 0 1em;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 0.25rem;
}

/* =========================
   Layout + reusable system
   ========================= */
.container {
  width: min(100% - clamp(1.5rem, 5vw, 4.5rem), var(--container-max));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-pad);
}

.stack {
  display: grid;
  gap: var(--space-4);
}

.stack--lg {
  gap: var(--space-6);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

/* Breakpoint 1: at tablet+ widths, cards can sit in columns while still readable. */
@media (min-width: 48rem) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Breakpoint 2: on very wide screens, increase breathing room for top nav. */
@media (min-width: 75rem) {
  .header-inner {
    padding-block: var(--space-4);
  }
}

@media (max-width: 30rem) {
  .brand-logo {
    height: 48px;
  }
}

/* =========================
   Site chrome
   ========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-block: var(--space-3);
}

.site-footer {
  /* Old-site mapping: black footer, muted text, white links */
  background: #000000;
  border-top: 0;
  color: var(--color-text-muted);
  padding-block: var(--space-5);
  margin-top: auto;
}

.site-footer a {
  color: #ffffff;
}

/* =========================
   Components
   ========================= */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100%;
  z-index: 999;
  background: #111827;
  color: #fff;
  text-decoration: none;
  border-radius: 0.3rem;
  padding: var(--space-2) var(--space-3);
}

.skip-link:focus-visible {
  top: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
}

/* Prevent layout shift with explicit image dimensions + CSS-rendered height */
.brand-logo {
  display: block;
  width: auto;
  height: 66px;
  max-width: min(100%, 260px);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-1);
}

.site-nav a {
  display: inline-block;
  font-family: var(--ff-body);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 0.5rem;
  padding: var(--space-2) var(--space-3);
}

.site-nav a:visited {
  color: var(--color-text);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--color-surface-soft);
  color: var(--color-text);
  text-decoration: underline;
}

.site-nav a[aria-current="page"],
.page-home .nav-home,
.page-about .nav-about,
.page-quick-studies .nav-quick-studies,
.page-sight-reading .nav-sight-reading,
.page-subscribe .nav-subscribe {
  background: #eaeaea;
  color: var(--color-text);
  font-weight: 700;
}

.hero {
  /* Old-site mapping: neutral surface (no bright blue gradient accents) */
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.06);
  padding: clamp(1.2rem, 0.9rem + 1.5vw, 2.5rem);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: 0 2px 0 rgba(15, 23, 42, 0.03);
}


.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0.55rem;
  padding: 0.65rem 1rem;
  border: 1px solid #000000;
  background: var(--color-surface);
  color: #000000;
}

.btn:hover {
  background: var(--color-surface-soft);
  color: #000000;
}

.btn--primary {
  background: #000000;
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-primary-strong);
  color: #fff;
}

/* =========================
   Utilities
   ========================= */
.muted {
  color: var(--color-text-muted);
}

/* =========================
   Homepage imported sections
   ========================= */
.about img,
.link-card img {
  max-width: 100%;
  height: auto;
  display: block;
}

.two-col {
  display: grid;
  gap: var(--space-5);
  align-items: start;
}

.link-grid {
  display: grid;
  gap: var(--space-5);
}

.link-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
}

.link-card img {
  border-radius: 50%;
  margin-bottom: var(--space-3);
  display: block;
  margin: 0 auto 10px;
  
}

.social {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.video {
  margin-block: var(--space-5);
}

.video-frame {
  position: relative;
  width: min(100%, 44rem);
  margin-inline: auto;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #111;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

hr {
  border: 0;
  /* Old-site mapping: 2px divider */
  border-top: 2px solid #eaeaea;
  margin-top: var(--space-6);
}

@media (min-width: 48rem) {
  .two-col {
    grid-template-columns: 1fr 1fr;
  }

  .link-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}


/* Quick studies page imported sections */
.featured,
.project-intro,
.index,
.links,
.subscribe {
  padding-block: var(--section-pad);
}

.featured {
  min-height: 8rem;
}

.index ul,
.resources ul {
  display: grid;
  gap: var(--space-3);
}

.resources {
  margin-top: var(--space-5);
}


.featured-strip {
  width: 100%;
  height: 180px;
  background: #F2F3F5 url("../img/piano-background-strip.jpg") center / cover no-repeat;
}

@media (max-width: 48rem) {
  .featured-strip {
    height: 120px;
  }
}


/* Mailchimp subscribe form */
#mc_embed_signup,
.subscribe form {
  max-width: 40rem;
}

#mc_embed_signup form,
.subscribe form {
  display: grid;
  gap: var(--space-3);
}

#mc_embed_signup input[type="email"],
#mc_embed_signup input[type="text"],
#mc_embed_signup input[type="number"],
#mc_embed_signup input[type="date"],
.subscribe input,
.subscribe select,
.subscribe textarea {
  width: 100%;
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.7rem 0.85rem;
}

#mc_embed_signup button,
#mc_embed_signup input[type="submit"],
.subscribe button,
.subscribe input[type="submit"] {
  justify-self: start;
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  font-weight: 700;
  border-radius: 0.55rem;
  padding: 0.65rem 1rem;
  border: 1px solid #000000;
  background: var(--color-surface);
  color: #000000;
  cursor: pointer;
}

#mc_embed_signup button:hover,
#mc_embed_signup input[type="submit"]:hover,
#mc_embed_signup button:focus-visible,
#mc_embed_signup input[type="submit"]:focus-visible,
.subscribe button:hover,
.subscribe input[type="submit"]:hover,
.subscribe button:focus-visible,
.subscribe input[type="submit"]:focus-visible {
  background: var(--color-surface-soft);
  color: #000000;
}

#mc_embed_signup .mc-field-group,
#mc_embed_signup .indicates-required,
#mc_embed_signup .clear {
  margin: 0;
}

#mc_embed_signup_scroll {
  display: flex;
  flex-direction: column;
  gap: 8px;
}