/* ============================================================================
   CA Anderson Drums — Design System & Layout
   Premium modern editorial aesthetic tailored for professional drum instruction.
   Touring credentials, structured curriculum, responsive layouts.
   ========================================================================= */

:root {
  /* — Color Palette — */
  --color-bg: #f8f8f9;
  --color-surface: #ffffff;
  --color-surface-subtle: #f0f1f3;
  --color-surface-hover: #e9ebef;
  
  --color-text: #111215;
  --color-text-muted: #575a65;
  --color-text-subtle: #828694;
  
  --color-divider: #e2e4e9;
  --color-divider-dark: #111215;

  /* — Accent (Touring Crimson) — */
  --color-accent: #ba0c2f;
  --color-accent-hover: #9e0825;
  --color-accent-active: #7d051c;
  --color-accent-subtle: rgba(186, 12, 47, 0.08);
  --color-accent-border: rgba(186, 12, 47, 0.2);

  /* — Typography — */
  --font-heading: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-heading-weight: 800;

  /* — Radii & Shadows — */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);

  /* — Spacing & Layout — */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  --gutter: clamp(20px, 4.5vw, 64px);
  --container-max: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.6;
  font-weight: 400;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* — Headings & Typography — */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
}

p { margin: 0 0 var(--space-4); }
img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}
a:hover {
  color: var(--color-accent-hover);
}

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}
::selection {
  background: var(--color-accent);
  color: #ffffff;
}

/* Skip link */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--color-accent); color: #ffffff;
  padding: 12px 20px; font-weight: 700; border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.skip:focus { left: 24px; text-decoration: none; }

/* — Container Layout — */
.wrap {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--color-divider);
}

/* — Eyebrow / Kicker Badge — */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 16px;
  padding: 6px 12px;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  border-radius: 20px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* — Navigation Bar — */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--gutter);
  max-width: var(--container-max);
  margin: 0 auto;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 248, 249, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 248, 249, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.nav-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.nav-brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.nav-brand-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
}
.nav-link {
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}
.nav-link:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
  text-decoration: none;
}
.nav-link[aria-current="page"] {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}
.nav-cta {
  margin-left: 8px;
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px var(--gutter);
  }
  .nav-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .nav-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    gap: 4px;
    border-top: 1px solid var(--color-divider);
    padding-top: 8px;
  }
  .nav-link {
    justify-content: center;
    padding: 8px 4px;
    font-size: 13.5px;
  }
  .nav-cta { display: none; }
}

/* — Buttons — */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14.5px;
  line-height: 1.2;
  border-radius: var(--radius-md);
  min-height: 46px;
  padding: 10px 22px;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(186, 12, 47, 0.25);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(186, 12, 47, 0.35);
}
.btn-primary:active {
  background: var(--color-accent-active);
}

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-divider);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-text-subtle);
  color: var(--color-text);
}

.btn-ghost {
  color: var(--color-accent);
  background: transparent;
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--color-accent-subtle);
  color: var(--color-accent-hover);
}

.btn-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
  margin-top: 28px;
}

/* — Hero Split Grid — */
.split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  padding: clamp(48px, 8vw, 84px) 0;
}
.split-top {
  align-items: start;
}
.split-top.narrow {
  grid-template-columns: 1.1fr 0.9fr;
}

@media (max-width: 860px) {
  .split, .split-top.narrow {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 40px 0;
  }
}

.h-display {
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 18px;
}
.h-page {
  font-size: clamp(32px, 4.2vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.h-section {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.h-display .line, .h-cta .line { display: block; }

.lede {
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0 0 20px;
}
.body {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin: 0 0 18px;
}
.body-tight { max-width: 48ch; }

/* — Photos with Editorial Framing — */
.photo {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.photo img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 4.8;
  object-fit: cover;
  filter: contrast(1.05) saturate(1.08);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), filter 0.4s ease;
}
.photo:hover img {
  transform: scale(1.02);
  filter: contrast(1.08) saturate(1.12);
}
.photo-hero img {
  min-height: 380px;
  object-position: 20% 40%;
}
.photo-about img {
  min-height: 380px;
  object-position: 72% 35%;
}

/* — Credentials Badge Bar — */
.facts-bar {
  padding: 32px 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  padding: 0 var(--space-6);
}
.fact-item {
  border-left: 3px solid var(--color-accent);
  padding-left: 14px;
}
.fact-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 4px;
}
.fact-role {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0;
}

/* — Structured 3-Column Card Deck — */
.card-stack {
  display: grid;
  gap: 16px;
}
.card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}
.card:hover {
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 6px;
}
.card-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.3;
  margin: 0 0 8px;
}
.card-body {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-muted);
  flex: 1;
}
.card-price {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  color: var(--color-accent);
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--color-divider);
}

/* — Priced Rows (Lessons Page) — */
.pricing-list {
  display: grid;
  gap: 16px;
  margin: 24px 0 48px;
}
.row {
  display: grid;
  grid-template-columns: 60px 1.4fr 2fr auto;
  align-items: center;
  gap: 20px;
  padding: 28px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}
.row:hover {
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-md);
}
.row-num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  margin: 0;
}
.row-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.2;
  margin: 0;
}
.row-text {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin: 0;
}
.row-price {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-accent);
  white-space: nowrap;
  background: var(--color-surface-subtle);
  padding: 8px 16px;
  border-radius: 20px;
  margin: 0;
}

@media (max-width: 768px) {
  .row {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px;
  }
  .row-num { display: none; }
  .row-price { align-self: start; }
}

/* — Masterclass Curriculum Table — */
.table-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-top: 24px;
}
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14.5px;
}
.table th {
  text-align: left;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 16px 20px;
  background: var(--color-surface-subtle);
  border-bottom: 1px solid var(--color-divider);
}
.table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text);
  line-height: 1.5;
}
.table tbody tr:last-child td {
  border-bottom: none;
}
.table tbody tr:hover {
  background: var(--color-surface-hover);
}
.table .lvl {
  font-weight: 800;
  color: var(--color-accent);
  width: 70px;
}
.table-pill {
  display: inline-block;
  padding: 4px 10px;
  background: var(--color-accent-subtle);
  border-radius: 12px;
  font-weight: 700;
  font-size: 12px;
}

/* — Pull Quote — */
.quote-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-left: 5px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin: 36px 0;
}
.quote {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.35;
  color: var(--color-text);
  margin: 0 0 16px;
}
.quote-by {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* — Contact Form Card — */
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 36px);
  box-shadow: var(--shadow-md);
}
.form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.field > label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}
.field-wide { grid-column: 1 / -1; }
.input {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  font: inherit;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
}
.input:hover {
  border-color: var(--color-text-subtle);
  background: var(--color-surface);
}
.input:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}
textarea.input {
  min-height: 120px;
  resize: vertical;
}
.form-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 8px;
}
.form-note {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
}
.form-note.is-sent { color: var(--color-accent); }

/* — Closing CTA Section — */
.cta {
  background: linear-gradient(135deg, #111215 0%, #1a1b20 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
  border-top: 3px solid var(--color-accent);
}
.cta::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(186, 12, 47, 0.18) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: clamp(60px, 8vw, 96px) var(--gutter);
  position: relative;
  z-index: 1;
}
.h-cta {
  color: #ffffff;
  font-size: clamp(32px, 4.5vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.cta-desc {
  font-size: 17px;
  color: #a0a4b0;
  max-width: 50ch;
  margin: 0 0 28px;
}
.cta .btn-primary {
  background: var(--color-accent);
  color: #ffffff;
}
.cta .btn-ghost {
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding-inline: 22px;
}
.cta .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

/* — Footer — */
.foot {
  background: #0d0e11;
  color: #8c909e;
  border-top: 1px solid #1f2127;
}
.foot-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.foot-row {
  padding: 44px 0;
  font-size: 13.5px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}
.foot a {
  color: #c5c8d4;
  text-decoration: none;
  transition: color 0.15s ease;
}
.foot a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}