/* =========================================================
   RIVERA PIANO STUDIOS — CORE STYLESHEET
   Design language: "The Golden Thread"
   A single gold line (piano string) runs through every page,
   strung between small pegs that mark each section — the
   conservatory's visual signature.
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root{
  --piano-black:   #1E1E1E;
  --black-soft:    #2A2A28;
  --ivory:         #FAF8F3;
  --ivory-deep:    #F1EBDD;
  --gold:          #C8A14A;
  --gold-rich:     #C8A14A;
  --gold-dark:     #9C7A32;
  --gold-pale:     #E8D9B0;
  --gray:          #777777;
  --gray-light:    #A8A8A4;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;

  --max-width: 1180px;
  --radius-sm: 2px;
  --radius-md: 4px;

  --shadow-soft: 0 12px 40px rgba(30,30,30,0.08);
  --shadow-deep: 0 20px 60px rgba(30,30,30,0.16);

  --ease: cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  background: var(--ivory);
  color: var(--piano-black);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font-family: inherit; cursor:pointer; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--piano-black);
}
p{ margin: 0 0 1em; color: var(--black-soft); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

:focus-visible{
  outline: 2px solid var(--gold-dark);
  outline-offset: 3px;
}

/* ---------- Layout helpers ---------- */
.container{
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}
.section{ padding: 120px 0; position: relative; }
.section-tight{ padding: 80px 0; }
.section-alt{ background: var(--ivory-deep); }
.section-dark{ background: var(--piano-black); color: var(--ivory); }
.section-dark p{ color: var(--gray-light); }
.section-dark h2, .section-dark h3{ color: var(--ivory); }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-dark);
  font-weight: 600;
  margin-bottom: 18px;
}
.eyebrow::before{
  content:'';
  width: 26px;
  height: 1px;
  background: var(--gold);
}
.section-dark .eyebrow{ color: var(--gold); }

.section-head{
  max-width: 640px;
  margin: 0 0 64px;
}
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head h2{ font-size: clamp(1.8rem, 3vw, 2.6rem); }
.section-head p{ font-size: 1.05rem; color: var(--gray); }
.section-dark .section-head p{ color: var(--gray-light); }

/* ---------- The Golden Thread (signature spine) ---------- */
.thread{
  position: relative;
}
.thread::before{
  content:'';
  position: absolute;
  left: 50%;
  top:0;
  bottom:0;
  width:1px;
  background: linear-gradient(to bottom, transparent, rgba(200,161,74,0.35) 10%, rgba(200,161,74,0.35) 90%, transparent);
  transform: translateX(-50%);
}
.peg{
  position:absolute;
  left:50%;
  width:9px; height:9px;
  border-radius:50%;
  background: var(--ivory);
  border: 2px solid var(--gold);
  transform: translate(-50%,-50%);
  z-index:2;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 16px 34px;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all 0.35s var(--ease);
  white-space: nowrap;
}
.btn-primary{
  background: var(--gold);
  color: var(--piano-black);
}
.btn-primary:hover{
  background: var(--gold-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}
.btn-outline{
  background: transparent;
  border-color: rgba(30,30,30,0.25);
  color: var(--piano-black);
}
.btn-outline:hover{
  border-color: var(--piano-black);
  background: var(--piano-black);
  color: var(--ivory);
}
.section-dark .btn-outline{
  border-color: rgba(250,248,243,0.35);
  color: var(--ivory);
}
.section-dark .btn-outline:hover{
  background: var(--ivory);
  color: var(--piano-black);
  border-color: var(--ivory);
}
.btn-row{ display:flex; gap:18px; flex-wrap:wrap; align-items:center; }

/* ---------- Nav ---------- */
.site-header{
  position: fixed;
  top:0; left:0; right:0;
  z-index: 1000;
  padding: 26px 0;
  transition: all 0.4s var(--ease);
  background: transparent;
}
.site-header.scrolled{
  padding: 16px 0;
  background: rgba(250,248,243,0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(30,30,30,0.06);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  display:flex;
  align-items:center;
  gap:10px;
}
.logo .mark{
  color: var(--gold);
  font-size: 1.5rem;
  line-height:1;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:38px;
}
.nav-links a{
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  position: relative;
  padding-bottom: 4px;
}
.nav-links a::after{
  content:'';
  position:absolute;
  left:0; right:0; bottom:0;
  height:1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after{ transform: scaleX(1); }
.nav-links a.active{ color: var(--gold-dark); }

.nav-item-dropdown{ position:relative; }
.dropdown-panel{
  position:absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--ivory);
  border: 1px solid rgba(30,30,30,0.08);
  box-shadow: var(--shadow-soft);
  border-radius: var(--radius-md);
  padding: 10px;
  min-width: 210px;
  opacity:0;
  visibility:hidden;
  transition: all 0.3s var(--ease);
}
.nav-item-dropdown:hover .dropdown-panel{
  opacity:1; visibility:visible; transform: translateX(-50%) translateY(0);
}
.dropdown-panel a{
  display:block;
  padding: 12px 16px;
  text-transform:none;
  letter-spacing:0;
  font-weight:500;
  font-size:0.88rem;
  border-radius: var(--radius-sm);
}
.dropdown-panel a::after{ display:none; }
.dropdown-panel a:hover{ background: var(--ivory-deep); color: var(--gold-dark); }
@media (max-width: 860px){
  .dropdown-panel{
    position:static; opacity:1; visibility:visible; transform:none;
    box-shadow:none; border:none; padding: 6px 0 0 16px; display:none;
  }
  .nav-item-dropdown.open .dropdown-panel{ display:block; }
}

.nav-cta{ display:flex; align-items:center; gap:22px; }
.nav-phone{
  font-size: 0.85rem;
  font-weight: 600;
  display:flex; align-items:center; gap:8px;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  padding: 6px;
}
.nav-toggle span{
  width: 24px; height: 2px;
  background: var(--piano-black);
  transition: all 0.3s var(--ease);
}

/* ---------- Footer ---------- */
.site-footer{
  background: var(--piano-black);
  color: var(--gray-light);
  padding: 90px 0 30px;
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 50px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(250,248,243,0.1);
}
.footer-logo{
  font-family: var(--font-display);
  color: var(--ivory);
  font-size: 1.4rem;
  margin-bottom: 14px;
}
.footer-col h4{
  color: var(--ivory);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 22px;
}
.footer-col ul li{ margin-bottom: 12px; }
.footer-col a{ font-size: 0.92rem; transition: color 0.25s var(--ease); }
.footer-col a:hover{ color: var(--gold); }
.footer-social{ display:flex; gap:14px; margin-top: 20px; }
.footer-social a{
  width: 36px; height:36px;
  border: 1px solid rgba(250,248,243,0.25);
  border-radius: 50%;
  display:flex; align-items:center; justify-content:center;
  transition: all 0.3s var(--ease);
}
.footer-social a:hover{ border-color: var(--gold); background: var(--gold); color: var(--piano-black); }
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top: 30px;
  font-size: 0.8rem;
  color: var(--gray);
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Hero ---------- */
.hero{
  min-height: 100vh;
  display:flex;
  align-items:center;
  padding: 140px 0 80px;
  position: relative;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items:center;
}
.hero h1{
  font-size: clamp(2.4rem, 4.4vw, 3.8rem);
  margin-bottom: 26px;
}
.hero .lede{
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 460px;
  margin-bottom: 40px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap: 10px 26px;
  margin: 36px 0 8px;
}
.hero-tags span{
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold-dark);
  font-weight:600;
  position:relative;
  padding-left: 16px;
}
.hero-tags span::before{
  content:'';
  position:absolute;
  left:0; top:50%;
  width:6px; height:6px;
  border-radius:50%;
  background: var(--gold);
  transform: translateY(-50%);
}

/* Hero visual — SVG art (keys + string), swap-ready for a photo:
   replace .hero-visual contents with <img src="images/piano-lessons.jpg"> when available. */
.hero-visual{
  position: relative;
  aspect-ratio: 4/5;
  background: var(--piano-black);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-deep);
}
.hero-visual svg{ width:100%; height:100%; }

.page-hero{
  padding: 170px 0 90px;
  background: var(--piano-black);
  color: var(--ivory);
  position: relative;
  overflow:hidden;
}
.page-hero .eyebrow{ color: var(--gold); }
.page-hero h1{ color: var(--ivory); font-size: clamp(2.2rem, 4vw, 3.2rem); }
.page-hero p{ color: var(--gray-light); max-width: 560px; font-size: 1.05rem; }
.page-hero .keyline{
  position:absolute;
  bottom:0; left:0; right:0;
  height: 46px;
  display:flex;
}
.page-hero .keyline span{
  flex:1;
  border-right: 1px solid rgba(250,248,243,0.08);
}
.page-hero .keyline span:nth-child(7n){ border-right-color: rgba(200,161,74,0.35); }

/* ---------- Trust bar ---------- */
.trust-bar{
  padding: 34px 0;
  background: var(--ivory-deep);
  border-top: 1px solid rgba(30,30,30,0.06);
  border-bottom: 1px solid rgba(30,30,30,0.06);
}
.trust-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap: 20px;
}
.stars{ color: var(--gold); letter-spacing: 3px; font-size: 1rem; }
.trust-items{ display:flex; gap: 34px; flex-wrap:wrap; }
.trust-items span{
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight:600;
  color: var(--gray);
}

/* ---------- Cards ---------- */
.card-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.card{
  background: var(--ivory);
  border: 1px solid rgba(30,30,30,0.08);
  border-radius: var(--radius-md);
  padding: 44px 34px;
  transition: all 0.4s var(--ease);
  position: relative;
}
.card:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
  border-color: var(--gold-pale);
}
.card .num{
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--gold-dark);
  letter-spacing: 0.1em;
  margin-bottom: 18px;
  display:block;
}
.card h3{ font-size: 1.25rem; margin-bottom: 12px; }
.card p{ font-size: 0.95rem; color: var(--gray); margin-bottom: 0; }
.card ul{ margin-top: 14px; }
.card ul li{
  font-size: 0.9rem;
  color: var(--gray);
  padding-left: 18px;
  position: relative;
  margin-bottom: 8px;
}
.card ul li::before{
  content:'';
  position:absolute; left:0; top:10px;
  width:6px; height:1px;
  background: var(--gold);
}

/* ---------- Feature list (checks) ---------- */
.feature-grid{
  display:grid;
  grid-template-columns: repeat(2,1fr);
  gap: 22px 40px;
}
.feature-item{
  display:flex;
  gap: 16px;
  align-items:flex-start;
}
.feature-item .check{
  flex-shrink:0;
  width: 26px; height:26px;
  border-radius:50%;
  border:1px solid var(--gold);
  color: var(--gold-dark);
  display:flex; align-items:center; justify-content:center;
  font-size: 0.75rem;
  margin-top: 2px;
}
.feature-item span{ font-weight:500; font-size:0.98rem; }

/* ---------- Pricing ---------- */
.pricing-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 34px;
  align-items:stretch;
}
.price-card{
  background: var(--ivory);
  border: 1px solid rgba(30,30,30,0.1);
  border-radius: var(--radius-md);
  padding: 48px 40px;
  display:flex;
  flex-direction:column;
  position:relative;
}
.price-card.popular{
  background: var(--piano-black);
  color: var(--ivory);
  border-color: var(--piano-black);
  box-shadow: var(--shadow-deep);
}
.price-card.popular p{ color: var(--gray-light); }
.price-card .tag{
  position:absolute;
  top: -13px; right: 40px;
  background: var(--gold);
  color: var(--piano-black);
  font-size: 0.7rem;
  text-transform:uppercase;
  letter-spacing: 0.08em;
  font-weight:700;
  padding: 6px 14px;
  border-radius: 20px;
}
.price-card h3{ font-size:1.4rem; }
.price-card .includes{ margin: 26px 0 34px; flex-grow:1; }
.price-card .includes li{
  padding: 10px 0;
  border-bottom: 1px solid rgba(30,30,30,0.08);
  font-size: 0.95rem;
  display:flex;
  gap:10px;
}
.price-card.popular .includes li{ border-bottom-color: rgba(250,248,243,0.12); }
.price-card .includes li::before{ content:'—'; color: var(--gold); }

/* ---------- Testimonials ---------- */
.testimonial-track{
  display:flex;
  gap: 30px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.testimonial-track::-webkit-scrollbar{ display:none; }
.testimonial-card{
  scroll-snap-align: start;
  flex: 0 0 min(420px, 85%);
  background: var(--ivory);
  border: 1px solid rgba(30,30,30,0.08);
  border-radius: var(--radius-md);
  padding: 40px;
}
.testimonial-card .stars{ margin-bottom: 18px; display:block; }
.testimonial-card p{ font-family: var(--font-display); font-size:1.15rem; font-style:italic; color: var(--piano-black); }
.testimonial-card .who{ font-size:0.82rem; text-transform:uppercase; letter-spacing:0.06em; color: var(--gold-dark); font-weight:600; margin-top:20px; }
.carousel-dots{ display:flex; gap:10px; margin-top: 30px; justify-content:center; }
.carousel-dots button{
  width:8px; height:8px; border-radius:50%;
  border: none; background: rgba(30,30,30,0.15);
  transition: all 0.3s var(--ease);
}
.carousel-dots button.active{ background: var(--gold); width:22px; border-radius:4px; }

/* ---------- FAQ Accordion ---------- */
.accordion{ border-top: 1px solid rgba(30,30,30,0.1); }
.accordion-item{ border-bottom: 1px solid rgba(30,30,30,0.1); }
.accordion-trigger{
  width:100%;
  background:none; border:none;
  display:flex; justify-content:space-between; align-items:center;
  padding: 26px 4px;
  text-align:left;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--piano-black);
}
.accordion-trigger .plus{
  flex-shrink:0;
  width: 26px; height:26px;
  border: 1px solid var(--gold);
  border-radius:50%;
  position:relative;
  transition: transform 0.35s var(--ease);
}
.accordion-trigger .plus::before,
.accordion-trigger .plus::after{
  content:'';
  position:absolute;
  background: var(--gold-dark);
  top:50%; left:50%;
}
.accordion-trigger .plus::before{ width:10px; height:1px; transform:translate(-50%,-50%); }
.accordion-trigger .plus::after{ width:1px; height:10px; transform:translate(-50%,-50%); transition: opacity 0.3s var(--ease); }
.accordion-item.open .plus{ transform: rotate(180deg); }
.accordion-item.open .plus::after{ opacity:0; }
.accordion-panel{
  max-height:0;
  overflow:hidden;
  transition: max-height 0.4s var(--ease);
}
.accordion-panel p{ padding: 0 4px 26px; color: var(--gray); font-size:0.96rem; max-width: 640px; }

/* ---------- Gallery ---------- */
.gallery-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery-item{
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow:hidden;
  cursor:pointer;
  position:relative;
}
.gallery-item svg{ width:100%; height:100%; transition: transform 0.6s var(--ease); }
.gallery-item:hover svg{ transform: scale(1.06); }
.gallery-item .cap{
  position:absolute; left:0; right:0; bottom:0;
  padding: 18px;
  background: linear-gradient(to top, rgba(30,30,30,0.75), transparent);
  color: var(--ivory);
  font-size: 0.85rem;
  opacity:0;
  transition: opacity 0.3s var(--ease);
}
.gallery-item:hover .cap{ opacity:1; }
.lightbox{
  position:fixed; inset:0; z-index:2000;
  background: rgba(20,20,18,0.94);
  display:none;
  align-items:center; justify-content:center;
  padding: 40px;
}
.lightbox.open{ display:flex; }
.lightbox-inner{ max-width: 800px; width:100%; }
.lightbox-inner svg{ width:100%; height:auto; border-radius: var(--radius-md); }
.lightbox-close{
  position:absolute; top:30px; right:40px;
  background:none; border:none; color: var(--ivory);
  font-size: 1.8rem; line-height:1;
}
.lightbox-cap{ color: var(--gray-light); text-align:center; margin-top:18px; font-size:0.9rem; }

/* ---------- Forms ---------- */
.form-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.field{ display:flex; flex-direction:column; gap:8px; }
.field.full{ grid-column: 1 / -1; }
.field label{
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight:600;
  color: var(--gray);
}
.field input, .field select, .field textarea{
  border: 1px solid rgba(30,30,30,0.18);
  background: var(--ivory);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  color: var(--piano-black);
  transition: border-color 0.3s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus{
  border-color: var(--gold);
  outline:none;
}
.field textarea{ resize: vertical; min-height: 120px; }
.form-note{ font-size:0.82rem; color: var(--gray-light); margin-top:16px; }
.form-success{
  display:none;
  padding: 20px 24px;
  border: 1px solid var(--gold);
  background: var(--ivory-deep);
  border-radius: var(--radius-sm);
  margin-bottom: 26px;
  font-size:0.92rem;
}
.form-success.show{ display:block; }

/* ---------- Contact info blocks ---------- */
.contact-grid{
  display:grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items:start;
}
.contact-info-item{
  display:flex; gap:18px; margin-bottom: 30px;
}
.contact-info-item .icon{
  width:46px; height:46px; flex-shrink:0;
  border-radius:50%;
  border: 1px solid var(--gold);
  color: var(--gold-dark);
  display:flex; align-items:center; justify-content:center;
}
.contact-info-item h4{ font-size:1rem; margin-bottom:4px; }
.contact-info-item p{ font-size:0.92rem; margin:0; }
.map-embed{
  aspect-ratio: 16/9;
  border-radius: var(--radius-md);
  overflow:hidden;
  border: 1px solid rgba(30,30,30,0.1);
}

/* ---------- CTA banner ---------- */
.cta-banner{
  background: var(--piano-black);
  color: var(--ivory);
  padding: 90px 0;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-banner h2{ color: var(--ivory); font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.cta-banner .btn-row{ justify-content:center; margin-top: 34px; }

/* ---------- 404 ---------- */
.error-page{
  min-height: 100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding: 140px 24px 60px;
}
.error-page .big{
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  color: var(--gold);
  line-height:1;
  margin-bottom: 10px;
}

/* ---------- Reveal-on-scroll base (see animations.css) ---------- */
.reveal{ opacity:0; transform: translateY(28px); }
.reveal.in-view{ opacity:1; transform:none; }