/* ============================================
   NOTAS EN CLAVE — Sitio Web
   ============================================ */

:root {
  --orange:      #ff8210;
  --orange-dark: #e0700a;
  --green-light: #7ed957;
  --green-dark:  #008037;
  --bg:          #0a131e;
  --bg-card:     #0f1e2e;
  --bg-alt:      #060f18;
  --text:        #f0f0f0;
  --text-muted:  #7a9ab5;
  --border:      #1a3a5c;
  --white:       #ffffff;
  --radius:      12px;
  --shadow:      0 4px 24px rgba(0,0,0,0.45);
  --transition:  0.3s ease;
  --max-width:   1200px;
  --font-head:   'Montserrat', sans-serif;
  --font-body:   'Open Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ============================================ NAVBAR */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,19,30,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(26,58,92,0.5);
  padding: 0 1.5rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}
.navbar__logo { display: flex; align-items: center; gap: .75rem; }
.navbar__logo img { height: 46px; width: 46px; }
.navbar__logo-text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
  line-height: 1.2;
}
.navbar__logo-text span {
  display: block;
  font-size: .65rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.navbar__menu {
  display: flex;
  align-items: center;
  gap: .25rem;
}
.navbar__menu a {
  font-family: var(--font-head);
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: .45rem .8rem;
  border-radius: 8px;
  transition: var(--transition);
  letter-spacing: .02em;
}
.navbar__menu a:hover,
.navbar__menu a.active {
  color: var(--white);
  background: rgba(255,130,16,.1);
}
.navbar__cta {
  background: var(--orange) !important;
  color: var(--white) !important;
  border-radius: 50px !important;
  padding: .45rem 1.1rem !important;
}
.navbar__cta:hover { background: var(--orange-dark) !important; }
.navbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}
.navbar__burger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}
.navbar__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__burger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.navbar__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================ BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .95rem;
  padding: .875rem 1.75rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: .02em;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }
.btn--primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(255,130,16,.4);
}
.btn--primary:hover {
  background: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,130,16,.5);
}
.btn--outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,.25);
}
.btn--outline:hover {
  border-color: var(--orange);
  color: var(--orange);
  transform: translateY(-2px);
}
.btn--whatsapp {
  background: #25D366;
  color: var(--white);
  box-shadow: 0 4px 16px rgba(37,211,102,.35);
}
.btn--whatsapp:hover {
  background: #1ebe5a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,.45);
}
.btn--sm { padding: .55rem 1.2rem; font-size: .85rem; }

/* ============================================ WHATSAPP FLOAT */
.wa-float {
  position: fixed;
  bottom: 2rem; right: 2rem;
  z-index: 999;
  width: 60px; height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,.5);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: wa-bounce 2.5s ease-in-out infinite;
}
.wa-float:hover {
  transform: scale(1.12);
  box-shadow: 0 8px 30px rgba(37,211,102,.6);
  animation: none;
}
.wa-float svg { width: 30px; height: 30px; fill: white; }
@keyframes wa-bounce {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}

/* ============================================ HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 1.5rem 5rem;
  position: relative;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #060f18 0%, #07152a 50%, #081a0e 100%);
  z-index: 0;
}
.hero__bg::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 65% 50%, rgba(126,217,87,.07) 0%, transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(255,130,16,.06) 0%, transparent 50%);
}
.hero__content {
  position: relative; z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto; width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero__badge {
  display: inline-block;
  background: rgba(126,217,87,.1);
  border: 1px solid rgba(126,217,87,.3);
  color: var(--green-light);
  font-size: .75rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  padding: .35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}
.hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 1rem;
}
.hero__title em { font-style: normal; color: var(--orange); }
.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  line-height: 1.75;
  max-width: 480px;
}
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero__logo-wrap {
  position: relative;
  width: 320px; height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero__logo-wrap::before {
  content: '';
  position: absolute; inset: -24px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,130,16,.14) 0%, transparent 70%);
  animation: logo-pulse 3.5s ease-in-out infinite;
}
.hero__logo-wrap img {
  width: 290px; height: 290px;
  filter: drop-shadow(0 0 36px rgba(255,130,16,.28));
}
@keyframes logo-pulse {
  0%,100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.06); opacity: .8; }
}

/* ============================================ SECTIONS */
.section { padding: 5rem 1.5rem; }
.section--alt { background: var(--bg-alt); }
.container { max-width: var(--max-width); margin: 0 auto; width: 100%; }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header__label {
  display: inline-block;
  font-size: .72rem; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .75rem;
}
.section-header__title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.25;
}
.section-header__title em { font-style: normal; color: var(--green-light); }
.section-header__desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ============================================ STATS */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 0;
}
.stat-item {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.stat-item:hover { border-color: rgba(255,130,16,.35); transform: translateY(-3px); }
.stat-item__number {
  font-family: var(--font-head);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: .25rem;
}
.stat-item__label { font-size: .875rem; color: var(--text-muted); }

/* ============================================ INSTRUMENT CARDS */
.instruments-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.instrument-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.instrument-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--green-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.instrument-card:hover {
  border-color: rgba(255,130,16,.4);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.instrument-card:hover::before { transform: scaleX(1); }
.instrument-card__icon { font-size: 2.5rem; margin-bottom: 1rem; }
.instrument-card__title {
  font-family: var(--font-head);
  font-size: 1.2rem; font-weight: 700;
  color: var(--white);
  margin-bottom: .5rem;
}
.instrument-card__desc {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}
.instrument-card__tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.25rem; }
.tag {
  background: rgba(126,217,87,.1);
  border: 1px solid rgba(126,217,87,.2);
  color: var(--green-light);
  font-size: .72rem; font-weight: 700;
  padding: .25rem .65rem;
  border-radius: 50px;
  letter-spacing: .04em;
}
.tag--orange {
  background: rgba(255,130,16,.1);
  border-color: rgba(255,130,16,.25);
  color: var(--orange);
}
.instrument-card__link {
  font-family: var(--font-head);
  font-size: .875rem; font-weight: 700;
  color: var(--orange);
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  transition: var(--transition);
}
.instrument-card__link:hover { gap: .5rem; }

/* ============================================ FEATURES */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.feature-item { text-align: center; padding: 2rem 1rem; }
.feature-item__icon {
  width: 64px; height: 64px;
  background: rgba(255,130,16,.08);
  border: 2px solid rgba(255,130,16,.18);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin: 0 auto 1.25rem;
  transition: var(--transition);
}
.feature-item:hover .feature-item__icon {
  background: rgba(255,130,16,.18);
  border-color: var(--orange);
  transform: scale(1.1);
}
.feature-item__title {
  font-family: var(--font-head);
  font-size: 1.05rem; font-weight: 700;
  color: var(--white);
  margin-bottom: .5rem;
}
.feature-item__desc { font-size: .875rem; color: var(--text-muted); line-height: 1.65; }

/* ============================================ TESTIMONIALS */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  position: relative;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: .75rem; right: 1.25rem;
  font-family: Georgia, serif;
  font-size: 5rem;
  color: rgba(255,130,16,.12);
  line-height: 1;
}
.testimonial-card__stars { color: var(--orange); font-size: .875rem; margin-bottom: .875rem; }
.testimonial-card__text {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.75;
  font-style: italic;
  margin-bottom: 1.5rem;
}
.testimonial-card__author { display: flex; align-items: center; gap: .75rem; }
.testimonial-card__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange), var(--green-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700; font-size: 1rem;
  color: white;
  flex-shrink: 0;
}
.testimonial-card__name {
  font-family: var(--font-head);
  font-weight: 700; font-size: .9rem;
  color: var(--white);
}
.testimonial-card__role { font-size: .78rem; color: var(--text-muted); }

/* ============================================ CTA BANNER */
.cta-banner {
  background: linear-gradient(135deg, #0c1f0e 0%, #1a0e05 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 5rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(255,130,16,.07) 0%, transparent 65%);
}
.cta-banner .container { position: relative; z-index: 1; }
.cta-banner__title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
}
.cta-banner__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
.cta-banner__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ============================================ PAGE HERO (páginas internas) */
.page-hero {
  padding: 9rem 1.5rem 4.5rem;
  text-align: center;
  background: linear-gradient(180deg, #060f18 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center top, rgba(255,130,16,.06) 0%, transparent 60%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero__label {
  display: inline-block;
  font-size: .72rem; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .75rem;
}
.page-hero__title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.2;
}
.page-hero__desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ============================================ ACADEMIA: INSTRUMENT SECTIONS */
.instrument-section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.instrument-section:last-child { border-bottom: none; }
.instrument-section--reverse { }
.instrument-section--reverse .instrument-section__text { order: 2; }
.instrument-section--reverse .instrument-section__visual { order: 1; }
.instrument-section__kicker {
  font-size: .72rem; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .75rem;
}
.instrument-section__title {
  font-family: var(--font-head);
  font-size: 1.75rem; font-weight: 800;
  color: var(--white);
  margin-bottom: .875rem;
  line-height: 1.3;
}
.instrument-section__desc {
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.instrument-section__features {
  display: flex; flex-direction: column;
  gap: .625rem;
  margin-bottom: 1.75rem;
}
.instrument-section__features li {
  display: flex; gap: .75rem;
  align-items: flex-start;
  font-size: .875rem;
  color: var(--text-muted);
}
.instrument-section__features li::before {
  content: '✓';
  color: var(--green-light);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .1rem;
}
.instrument-section__visual {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 340px;
  overflow: hidden;
  transition: var(--transition);
}
.instrument-section__visual:hover { border-color: rgba(255,130,16,.35); }
.instrument-section__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s ease;
  display: block;
}
.instrument-section__visual:hover img { transform: scale(1.05); }

/* ============================================ FAQ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex; flex-direction: column;
  gap: 1rem;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(255,130,16,.35); }
.faq-item__question {
  width: 100%;
  background: none; border: none;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--white);
  font-family: var(--font-head);
  font-size: .95rem; font-weight: 600;
  text-align: left;
  gap: 1rem;
  transition: color var(--transition);
}
.faq-item__question:hover { color: var(--orange); }
.faq-item__icon { font-size: 1.25rem; color: var(--orange); transition: transform var(--transition); flex-shrink: 0; }
.faq-item.open .faq-item__icon { transform: rotate(45deg); }
.faq-item__answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-item__answer { max-height: 300px; }
.faq-item__answer-inner {
  padding: 0 1.5rem 1.25rem;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================ PROFESORES */
.professors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}
.professor-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  text-align: center;
}
.professor-card:hover {
  border-color: rgba(255,130,16,.4);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.professor-card:hover .professor-card__photo img {
  transform: scale(1.05);
}
.professor-card__photo {
  height: 240px;
  overflow: hidden;
  background: linear-gradient(135deg, #0f2535, #0c2010);
}
.professor-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.4s ease;
  display: block;
}
.professor-card__body { padding: 1.5rem; }
.professor-card__name {
  font-family: var(--font-head);
  font-size: 1.1rem; font-weight: 700;
  color: var(--white);
  margin-bottom: .25rem;
}
.professor-card__instrument {
  font-size: .85rem;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: .75rem;
}
.professor-card__bio { font-size: .875rem; color: var(--text-muted); line-height: 1.65; margin-bottom: .75rem; }
.professor-card__ig {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--font-head);
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}
.professor-card__ig:hover { color: #E1306C; }

/* ============================================ SERVICIOS */
.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
}
.service-block:last-child { border-bottom: none; }
.service-block--reverse .service-block__text { order: 2; }
.service-block--reverse .service-block__visual { order: 1; }
.service-block__label {
  font-size: .72rem; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .75rem;
}
.service-block__title {
  font-family: var(--font-head);
  font-size: 1.75rem; font-weight: 800;
  color: var(--white);
  margin-bottom: .875rem;
  line-height: 1.3;
}
.service-block__desc {
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.service-block__list {
  display: flex; flex-direction: column;
  gap: .75rem;
  margin-bottom: 1.75rem;
}
.service-block__list li {
  display: flex; gap: .75rem;
  align-items: flex-start;
  font-size: .9rem;
  color: var(--text-muted);
}
.service-block__list li::before {
  content: '✓';
  color: var(--green-light);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .1rem;
}
.service-block__visual {
  background: linear-gradient(135deg, var(--bg-card), #0d2030);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  gap: .75rem;
}
.service-block__visual span {
  font-size: .85rem;
  color: var(--text-muted);
  font-family: var(--font-head);
}

/* ============================================ CONTACTO */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3.5rem;
  align-items: start;
}
.contact-info__title {
  font-family: var(--font-head);
  font-size: 1.5rem; font-weight: 700;
  color: var(--white);
  margin-bottom: 1.75rem;
}
.contact-info__item {
  display: flex; gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}
.contact-info__item-icon {
  width: 44px; height: 44px;
  background: rgba(255,130,16,.08);
  border: 1px solid rgba(255,130,16,.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.contact-info__item-label {
  font-family: var(--font-head);
  font-size: .7rem; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--orange);
  margin-bottom: .25rem;
}
.contact-info__item-value { font-size: .95rem; color: var(--text); line-height: 1.55; }
.contact-info__item-value a { color: var(--text); transition: var(--transition); }
.contact-info__item-value a:hover { color: var(--orange); }
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}
.contact-form__title {
  font-family: var(--font-head);
  font-size: 1.35rem; font-weight: 700;
  color: var(--white);
  margin-bottom: 1.75rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: .78rem; font-weight: 700;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  margin-bottom: .45rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .825rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: .925rem;
  transition: var(--transition);
  -webkit-appearance: none;
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237a9ab5' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255,130,16,.15);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-note {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .75rem;
  text-align: center;
  line-height: 1.6;
}
.map-section { padding: 0 1.5rem 5rem; }
.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 400px;
}
.map-wrap iframe {
  width: 100%; height: 100%;
  border: none;
  filter: invert(90%) hue-rotate(180deg) brightness(0.85) saturate(0.8);
}

/* ============================================ FOOTER */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 3.5rem 1.5rem 1.5rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 3rem;
  max-width: var(--max-width);
  margin: 0 auto 3rem;
}
.footer__brand { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; }
.footer__brand img { height: 42px; width: 42px; }
.footer__brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--white);
  font-size: 1rem;
}
.footer__desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.footer__heading {
  font-family: var(--font-head);
  font-size: .78rem; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.footer__links { display: flex; flex-direction: column; gap: .625rem; }
.footer__links a { font-size: .9rem; color: var(--text-muted); transition: var(--transition); }
.footer__links a:hover { color: var(--orange); }
.footer__contact-item { font-size: .875rem; color: var(--text-muted); margin-bottom: .625rem; line-height: 1.55; }
.footer__contact-item a { color: var(--text-muted); transition: var(--transition); }
.footer__contact-item a:hover { color: var(--orange); }
.footer__bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__copy { font-size: .8rem; color: var(--text-muted); }
.footer__lema { font-size: .8rem; font-style: italic; color: var(--orange); }

/* ============================================ RESPONSIVE */
@media (max-width: 1024px) {
  .hero__content { grid-template-columns: 1fr; text-align: center; gap: 2rem; }
  .hero__subtitle { max-width: 100%; }
  .hero__actions { justify-content: center; }
  .hero__visual { display: none; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .instruments-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .instrument-section { grid-template-columns: 1fr; gap: 2rem; }
  .instrument-section--reverse .instrument-section__text,
  .instrument-section--reverse .instrument-section__visual { order: unset; }
  .instrument-section__visual { height: 260px; }
  .service-block { grid-template-columns: 1fr; gap: 2rem; }
  .service-block--reverse .service-block__text,
  .service-block--reverse .service-block__visual { order: unset; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr 1fr; }
}
@keyframes menuFadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (max-width: 768px) {
  .navbar__menu { display: none; }
  .navbar__burger { display: flex; }
  .navbar__menu.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #060f18;
    align-items: center;
    justify-content: flex-start;
    padding-top: 2rem;
    gap: 0.25rem;
    z-index: 999;
    animation: menuFadeIn 0.22s ease forwards;
  }
  .navbar__menu.is-open li { width: 100%; text-align: center; }
  .navbar__menu.is-open a {
    display: block;
    font-size: 1.15rem;
    padding: 1rem 2rem;
    width: 100%;
  }
  .navbar__menu.is-open .navbar__cta {
    margin-top: 1rem;
    border-radius: 50px !important;
    padding: .85rem 2.5rem !important;
    font-size: 1.1rem !important;
  }
  .section { padding: 3.5rem 1.25rem; }
  .instruments-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .professors-grid { grid-template-columns: 1fr 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero { padding: 8rem 1.25rem 3.5rem; }
}
@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .professors-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .hero { padding: 7rem 1.25rem 4rem; }
  .btn { padding: .75rem 1.4rem; font-size: .88rem; }
  .cta-banner { padding: 3.5rem 1.25rem; }
}

/* ============================================ TOUCH HIGHLIGHT (mobile tap) */
.instrument-card.is-touched {
  border-color: rgba(255,130,16,.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.instrument-card.is-touched::before { transform: scaleX(1); }

.stat-item.is-touched {
  border-color: rgba(255,130,16,.35);
  transform: translateY(-3px);
}

.feature-item.is-touched .feature-item__icon {
  background: rgba(255,130,16,.18);
  border-color: var(--orange);
  transform: scale(1.1);
}

.professor-card.is-touched {
  border-color: rgba(255,130,16,.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.professor-card.is-touched .professor-card__photo img {
  transform: scale(1.05);
}

.instrument-section__visual.is-touched {
  border-color: rgba(255,130,16,.35);
}
.instrument-section__visual.is-touched img {
  transform: scale(1.05);
}