/* ============================================================
   Instrument Arts — dark modern rock/metal theme
   ============================================================ */

:root {
  --bg: #0a0a0c;
  --bg-elev: #121216;
  --bg-panel: #17171d;
  --border: #26262e;
  --border-strong: #33333d;
  --text: #f5f5f7;
  --text-muted: #a0a0aa;
  --text-dim: #6c6c78;
  --accent: #ff2f3a;
  --accent-hot: #ff5566;
  --accent-deep: #b81826;
  --accent-glow: rgba(255, 47, 58, 0.35);
  --gold: #e8b76a;
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --nav-height: 76px;
  --container: 1200px;
  --radius: 4px;
  --radius-lg: 8px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
a:hover { color: var(--accent-hot); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.35rem, 2vw, 1.75rem); }

p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- utility text tokens (from source content) ---------- */
.cta-highlight {
  color: var(--gold);
  font-weight: 600;
}
.font-bold { font-weight: 700; }
.text-xl { font-size: 1.15rem; }
.text-2xl { font-size: 1.35rem; }
.text-3xl { font-size: 1.55rem; }
.text-large { font-size: clamp(1.75rem, 3vw, 2.5rem); }
.text-slate-400 { color: var(--text-muted); }
.list-disc { list-style: disc; padding-left: 1.25rem; }
.list-disc li { margin-bottom: 0.5rem; }

/* ============================================================
   Header / nav
   ============================================================ */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-height);
  z-index: 100;
  background: rgba(10, 10, 12, 0.55);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.site-header.scrolled {
  background: rgba(10, 10, 12, 0.9);
  border-bottom-color: var(--border);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  height: 100%;
}
.brand img {
  height: 66px;
  width: auto;
  margin-top: 5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  position: relative;
  padding: 0.5rem 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  margin-top: 0.75rem;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius);
  cursor: pointer;
  line-height: 0;
}
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 820px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.is-open .nav-links,
  .nav.is-open .nav-cta {
    display: flex;
    position: absolute;
    top: var(--nav-height);
    right: 0;
    left: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 10, 12, 0.98);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
  }
  .nav.is-open .nav-links a {
    display: block;
    padding: 1rem clamp(1.25rem, 4vw, 2.5rem);
    width: 100%;
  }
  .nav.is-open .nav-cta {
    top: auto;
    padding: 1rem clamp(1.25rem, 4vw, 2.5rem);
    border-bottom: none;
  }
}

/* ============================================================
   Buttons
   ============================================================ */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  text-decoration: none;
  white-space: nowrap;
}
.button-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 rgba(255, 47, 58, 0);
}
.button-primary:hover {
  background: var(--accent-hot);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px var(--accent-glow), 0 0 0 1px var(--accent);
}
.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.button-lg {
  padding: 1.1rem 2.25rem;
  font-size: 1.05rem;
}
.button-sm {
  padding: 0.65rem 1.25rem;
  font-size: 0.85rem;
}

.buttons-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* ============================================================
   Section shell
   ============================================================ */

.section {
  padding: clamp(4rem, 9vw, 7rem) 0;
  position: relative;
}
.section-tight { padding: clamp(2.5rem, 5vw, 3.5rem) 0; }
.section-alt { background: var(--bg-elev); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding-left: 2rem;
  position: relative;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.5rem;
  height: 1px;
  background: var(--accent);
}
.eyebrow.centered {
  padding-left: 0;
  padding-inline: 2.5rem;
}
.eyebrow.centered::before {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}
.eyebrow.centered::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 1.5rem;
  height: 1px;
  background: var(--accent);
  transform: translateY(-50%);
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: calc(var(--nav-height) + 3rem) 0 4rem;
}
.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-video-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55) saturate(1.1) contrast(1.05);
}
.hero-video-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(10,10,12,0.4) 0%, rgba(10,10,12,0.85) 65%, rgba(10,10,12,1) 100%),
    linear-gradient(180deg, rgba(10,10,12,0.4) 0%, rgba(10,10,12,0.15) 40%, rgba(10,10,12,0.9) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.hero-content h1 {
  font-size: clamp(2.6rem, 6vw, 5.2rem);
  text-transform: uppercase;
  letter-spacing: -0.015em;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 24px rgba(0,0,0,0.6);
}
.hero-content h1 .accent { color: var(--accent); }
.hero-content .lead {
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  color: var(--text);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.55;
}
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: float 2.5s ease-in-out infinite;
}
.hero-scroll .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--text-muted), transparent);
}
@keyframes float {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ============================================================
   Page hero (smaller, for About/Contact)
   ============================================================ */

.page-hero {
  position: relative;
  padding: calc(var(--nav-height) + 5rem) 0 4rem;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(255,47,58,0.12), transparent 45%),
    radial-gradient(ellipse at 80% 100%, rgba(232,183,106,0.06), transparent 40%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero h1 {
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.page-hero p {
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* ============================================================
   Section: Level-Up short intro
   ============================================================ */

.intro {
  text-align: center;
  padding: clamp(3.5rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse at center top, rgba(255,47,58,0.06), transparent 60%),
    var(--bg);
}
.intro h2 {
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.intro .sub {
  color: var(--text-muted);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
}

/* ============================================================
   Courses
   ============================================================ */

.courses-head {
  text-align: center;
  margin-bottom: 3rem;
}
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.course-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  overflow: hidden;
}
.course-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, var(--accent) 80%, transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}
.course-card:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: 0 24px 48px -18px rgba(0,0,0,0.7), 0 0 60px -20px var(--accent-glow);
}
.course-card:hover::before { opacity: 1; }
.course-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(255,47,58,0.06), var(--bg-panel) 30%);
}
.course-card.featured .featured-tag {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius);
}
.course-card h3 {
  font-size: 1.4rem;
  text-transform: uppercase;
  margin: 0;
  padding-right: 4rem;
}
.course-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: -0.5rem 0 0;
}
.course-price {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-family: var(--font-display);
  margin-top: 0.5rem;
}
.course-price .now {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
}
.course-price .was {
  font-size: 1.1rem;
  color: var(--text-dim);
  text-decoration: line-through;
}
.course-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  flex: 1;
}
.course-desc ul { margin: 0 0 0.5rem; padding-left: 1.15rem; }
.course-desc li { margin-bottom: 0.5rem; }
.course-desc .font-bold { color: var(--text); }
.course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.course-actions .button { flex: 1 1 auto; }
.course-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-decoration: underline;
  text-underline-offset: 3px;
  align-self: flex-start;
}
.course-link:hover { color: var(--accent); }

/* ============================================================
   Free course / form-with-body
   ============================================================ */

.free-course {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 8vw, 6rem) 0;
}
.free-course-video {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.free-course-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4) saturate(0.9);
}
.free-course-video::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,12,0.7), rgba(10,10,12,0.9));
}
.free-course .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.free-course h2 {
  text-transform: uppercase;
}
.free-course .body {
  color: var(--text-muted);
  font-size: 1.05rem;
}
.free-course .body .font-bold { color: var(--text); }
.free-course .body ul { padding-left: 1.15rem; }
.free-course .body li { margin-bottom: 0.5rem; }
@media (max-width: 900px) {
  .free-course .container { grid-template-columns: 1fr; gap: 2.5rem; }
}

/* ============================================================
   Forms
   ============================================================ */

.form-card {
  background: rgba(23, 23, 29, 0.85);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(12px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-card h3 {
  margin: 0;
  text-transform: uppercase;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.field label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.field input,
.field textarea {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,47,58,0.15);
}
.field textarea { min-height: 140px; resize: vertical; }
.form-message {
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
  background: rgba(232, 183, 106, 0.08);
  border: 1px solid rgba(232, 183, 106, 0.35);
  color: var(--gold);
  font-size: 0.95rem;
  display: none;
}
.form-message.is-visible { display: block; }

/* ============================================================
   About / Instructor block
   ============================================================ */

.instructor {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.instructor-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--bg-panel);
}
.instructor-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.instructor-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(10,10,12,0.55));
  pointer-events: none;
}
.instructor:hover .instructor-media img { transform: scale(1.04); }
.instructor-body h2 { text-transform: uppercase; }
.instructor-body .body {
  color: var(--text-muted);
  font-size: 1.1rem;
}
.instructor-body .body .font-bold { color: var(--text); }
@media (max-width: 900px) {
  .instructor { grid-template-columns: 1fr; }
  .instructor-media { max-width: 480px; margin: 0 auto; }
}

/* ============================================================
   Still undecided / big CTA panel
   ============================================================ */

.big-cta {
  text-align: center;
  padding: clamp(4rem, 8vw, 6rem) 0;
  background:
    radial-gradient(ellipse at center, rgba(255,47,58,0.08), transparent 60%),
    var(--bg-elev);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.big-cta .container { max-width: 820px; }
.big-cta h2 {
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.big-cta .body {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.big-cta .body .font-bold { color: var(--text); }

/* ============================================================
   Contact page
   ============================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.contact-info h3 {
  text-transform: uppercase;
  font-size: 1rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.contact-info .info-block {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.contact-info .info-block:last-child { border-bottom: none; }
.contact-info p { color: var(--text-muted); margin: 0; }
.contact-info a { color: var(--text); }
.contact-info a:hover { color: var(--accent); }

@media (max-width: 820px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
  background: #050506;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand img { height: 44px; margin-bottom: 1rem; }
.footer-brand p { color: var(--text-muted); font-size: 0.95rem; max-width: 320px; }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 1rem;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a {
  color: var(--text-muted);
  font-size: 0.95rem;
}
.footer-col a:hover { color: var(--accent); }

.socials {
  display: flex;
  gap: 0.5rem;
}
.socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-muted);
  transition: all 0.25s var(--ease);
}
.socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -10px var(--accent-glow);
}
.socials svg { width: 18px; height: 18px; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.85rem;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}
.footer-bottom .brand-line { text-transform: uppercase; letter-spacing: 0.2em; }
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

/* ============================================================
   Scroll reveal
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   Grain overlay (subtle noise)
   ============================================================ */

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}