/* ============================================
   ESTÚDIO VOCAL — Design System
   Paleta: preto profundo · dourado · azul elétrico
   ============================================ */

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: rgba(18, 18, 18, 0.85);
  --bg-navy: #001220;
  --gold: #d4af37;
  --gold-light: #f5d061;
  --gold-dark: #a8892a;
  --gold-gradient: linear-gradient(135deg, #f5d061 0%, #d4af37 45%, #a8892a 100%);
  --blue: #00d4ff;
  --blue-deep: #007bff;
  --blue-glow: rgba(0, 212, 255, 0.25);
  --burgundy: #8b2942;
  --white: #ffffff;
  --gray: #d1d1d1;
  --gray-muted: #888888;
  --gray-dark: #2a2a2a;
  --font-serif: 'Cinzel', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, sans-serif;
  --header-h: 80px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1140px;
  --text-max: 38rem;
  --section-gap: clamp(80px, 10vw, 120px);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--gray);
  background: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'kern' 1, 'liga' 1;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  text-wrap: balance;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.responsive-media {
  display: block;
}

.hero__picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about__picture img {
  width: 100%;
  object-fit: cover;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul { list-style: none; }

strong {
  color: var(--white);
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .btn {
    white-space: normal;
    text-align: center;
    line-height: 1.45;
  }
}

.btn--sm {
  padding: 11px 24px;
  font-size: 0.8125rem;
}

.btn--lg {
  padding: 17px 34px;
  font-size: 0.9375rem;
}

.btn--gold {
  background: var(--gold-gradient);
  color: #0a0a0a;
  box-shadow: 0 4px 24px rgba(212, 175, 55, 0.3);
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(212, 175, 55, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  box-shadow: 0 0 20px var(--blue-glow);
}

.btn--whatsapp {
  background: #25d366;
  color: var(--white);
  box-shadow: 0 4px 24px rgba(37, 211, 102, 0.35);
}

.btn--whatsapp:hover {
  background: #20bd5a;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.5);
}

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  padding-top: env(safe-area-inset-top, 0px);
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: transparent;
  box-shadow: 0 1px 0 rgba(212, 175, 55, 0.1);
}

.header.scrolled::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: -1;
  pointer-events: none;
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.04em;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: block;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  padding: 10px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(209, 209, 209, 0.85);
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 16px;
  right: 16px;
  height: 1px;
  background: var(--gold-gradient);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--white);
}

.nav__link:hover::after,
.nav__link.active::after {
  transform: scaleX(1);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
}

.nav__toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__img {
  object-position: center 22%;
}

@media (max-width: 768px) {
  .hero__img {
    object-position: center top;
  }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(10, 10, 10, 0.92) 0%, rgba(10, 10, 10, 0.55) 45%, rgba(10, 10, 10, 0.25) 100%),
    linear-gradient(to top, rgba(10, 10, 10, 0.95) 0%, transparent 50%);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}

.hero__glow--blue {
  top: 10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: rgba(0, 123, 255, 0.12);
}

.hero__glow--gold {
  bottom: 10%;
  right: -5%;
  width: 350px;
  height: 350px;
  background: rgba(212, 175, 55, 0.08);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: calc(var(--header-h) + 48px) 0 100px;
}

.hero__inner {
  max-width: 640px;
}

.hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(209, 209, 209, 0.75);
  margin-bottom: 28px;
}

.hero__eyebrow-sep {
  color: var(--gold);
  opacity: 0.6;
}

.hero__dot {
  width: 8px;
  height: 8px;
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--blue);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3.25rem, 7.5vw, 5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero__title-line {
  display: block;
  color: var(--white);
}

.hero__title-line--gold {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-top: 0.08em;
}

.hero__divider {
  width: 64px;
  height: 1px;
  background: var(--gold-gradient);
  margin-bottom: 32px;
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  font-weight: 400;
  line-height: 1.85;
  color: rgba(209, 209, 209, 0.9);
  max-width: 520px;
  margin-bottom: 44px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 2;
}

.hero__scroll span {
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---- Sections ---- */
.section {
  position: relative;
  padding: var(--section-gap) 0;
}

.section__header {
  text-align: center;
  max-width: var(--text-max);
  margin: 0 auto clamp(48px, 6vw, 72px);
}

.section__header--left {
  text-align: left;
  margin-left: 0;
  max-width: 560px;
}

.section__header--decorated::after {
  content: '';
  display: block;
  width: 48px;
  height: 1px;
  background: var(--gold-gradient);
  margin: 28px auto 0;
}

.section__header--left.section__header--decorated::after {
  margin-left: 0;
  margin-right: auto;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 20px;
}

.section__label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue));
}

.section__header--left .section__label::before {
  background: linear-gradient(90deg, var(--blue), transparent);
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 3.5vw, 2.625rem);
  font-weight: 500;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: 0.01em;
}

.section__title em {
  font-style: italic;
  font-weight: 400;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__desc {
  font-size: 1.0625rem;
  font-weight: 400;
  color: rgba(209, 209, 209, 0.88);
  line-height: 1.85;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.section__header--left .section__desc {
  margin-left: 0;
}

.section__desc + .section__desc {
  margin-top: 20px;
}

/* ---- About ---- */
.section--about {
  background: var(--bg-secondary);
}

.about__grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.about__image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about__picture {
  width: 100%;
  height: 100%;
}

.about__image-wrap img,
.about__img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center top;
}

@media (max-width: 768px) {
  .about__img {
    aspect-ratio: 3 / 4;
    object-position: center 8%;
  }
}

.about__image-frame {
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: calc(var(--radius-lg) - 8px);
  pointer-events: none;
}

.about__cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.teacher-card {
  position: relative;
  padding: clamp(28px, 4vw, 36px);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: all var(--transition);
  overflow: hidden;
}

.teacher-card:hover {
  border-color: rgba(212, 175, 55, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.teacher-card__accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gold-gradient);
}

.teacher-card__accent--warm {
  background: linear-gradient(90deg, var(--burgundy), var(--gold));
}

.teacher-card__header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.teacher-card__avatar {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold-gradient);
  color: #0a0a0a;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 50%;
}

.teacher-card__avatar--th {
  background: linear-gradient(135deg, var(--burgundy), #c44d6a);
  color: var(--white);
}

.teacher-card__name {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  color: var(--white);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.teacher-card__role {
  font-size: 0.875rem;
  color: var(--gray-muted);
  line-height: 1.65;
  font-weight: 400;
}

.teacher-card__text {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(209, 209, 209, 0.92);
}

/* ---- Formação ---- */
.section--formacao {
  background: var(--bg-primary);
  overflow: hidden;
}

.section--formacao .section__bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.formacao__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 48px;
}

.formacao__item {
  padding: 26px 28px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.formacao__item:hover {
  border-color: rgba(0, 212, 255, 0.2);
  background: rgba(0, 212, 255, 0.03);
  transform: translateX(4px);
}

.formacao__item--wide {
  grid-column: span 2;
}

.formacao__name {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  color: var(--gold-light);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
  line-height: 1.35;
}

.formacao__desc {
  font-size: 0.9375rem;
  color: var(--gray-muted);
  line-height: 1.65;
}

.formacao__note {
  text-align: center;
  font-size: 1.0625rem;
  line-height: 1.75;
  padding: 28px 36px;
  background: rgba(212, 175, 55, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: var(--radius);
  max-width: 720px;
  margin: 0 auto;
}

/* ---- Aulas ---- */
.section--aulas {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-navy) 50%, var(--bg-secondary) 100%);
}

.aulas__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.aula-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 36px 30px 32px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  overflow: hidden;
  min-height: 100%;
}

.aula-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 40px var(--blue-glow);
}

.aula-card--featured {
  border-color: rgba(212, 175, 55, 0.3);
  background: linear-gradient(160deg, rgba(212, 175, 55, 0.08) 0%, var(--bg-card) 60%);
}

.aula-card--featured:hover {
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 40px rgba(212, 175, 55, 0.15);
}

.aula-card__badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 4px 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--gold-gradient);
  color: #0a0a0a;
  border-radius: 50px;
}

.aula-card__icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.aula-card__glow {
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition);
}

.aula-card:hover .aula-card__glow {
  opacity: 1;
}

.aula-card__title {
  font-family: var(--font-serif);
  font-size: 1.3125rem;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.aula-card__text {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 28px;
  flex: 1;
  color: rgba(209, 209, 209, 0.9);
}

.aula-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--blue);
  padding: 7px 16px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  margin-top: auto;
}

/* ---- Desenvolvimento ---- */
.section--dev {
  background: var(--bg-primary);
}

.dev__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.dev-card {
  display: flex;
  flex-direction: column;
  padding: 36px 30px 32px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  min-height: 100%;
}

.dev-card:hover {
  border-color: rgba(212, 175, 55, 0.2);
  background: rgba(212, 175, 55, 0.03);
}

.dev-card__number {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 600;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.35;
  line-height: 1;
  margin-bottom: 20px;
}

.dev-card__title {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.dev-card__subtitle {
  font-size: 0.875rem;
  color: var(--gray-muted);
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  line-height: 1.6;
}

.dev-card__list {
  flex: 1;
}

.dev-card__list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.9375rem;
  line-height: 1.65;
  margin-bottom: 12px;
  color: rgba(209, 209, 209, 0.88);
}

.dev-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
}

/* ---- Estúdio ---- */
.section--estudio {
  overflow: hidden;
  background: var(--bg-secondary);
}

.section--estudio .container {
  position: relative;
  z-index: 1;
}

.estudio__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.estudio__picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.estudio__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  transform: scale(1.04);
}

@media (max-width: 768px) {
  .estudio__bg-img {
    object-position: center 25%;
    transform: scale(1.08);
  }
}

.estudio__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(10, 10, 10, 0.35) 0%, rgba(10, 10, 10, 0.82) 100%),
    linear-gradient(180deg, rgba(10, 10, 10, 0.92) 0%, rgba(10, 10, 10, 0.55) 38%, rgba(10, 10, 10, 0.72) 68%, rgba(10, 10, 10, 0.94) 100%),
    linear-gradient(105deg, rgba(10, 10, 10, 0.88) 0%, rgba(10, 10, 10, 0.45) 50%, rgba(10, 10, 10, 0.82) 100%);
}

.estudio__overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.06) 0%, transparent 45%);
  pointer-events: none;
}

.estudio__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  pointer-events: none;
}

.estudio__glow--gold {
  top: 8%;
  right: -6%;
  width: 420px;
  height: 420px;
  background: rgba(212, 175, 55, 0.14);
}

.estudio__glow--blue {
  bottom: 12%;
  left: -8%;
  width: 380px;
  height: 380px;
  background: rgba(0, 212, 255, 0.1);
}

.section--estudio .section__header {
  margin-bottom: clamp(32px, 4vw, 44px);
}

.estudio__features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: clamp(36px, 5vw, 48px);
}

.estudio-feature {
  padding: 28px 22px;
  background: rgba(10, 10, 10, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  text-align: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  transition: all var(--transition);
}

.estudio-feature:hover {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(10, 10, 10, 0.72);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 212, 255, 0.08);
}

.estudio-feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--gold-light);
}

.estudio-feature__title {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.estudio-feature__text {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--gray-muted);
}

.estudio__body {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.estudio__lead {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: rgba(209, 209, 209, 0.9);
  margin-bottom: 28px;
}

.estudio__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
}

.tag {
  padding: 9px 20px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold-light);
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 50px;
}

.estudio__info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding: 28px;
  background: rgba(10, 10, 10, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  text-align: left;
}

.estudio__info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.estudio__info-item svg {
  flex-shrink: 0;
  color: var(--blue);
  margin-top: 2px;
}

.estudio__info-item strong {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 8px;
}

.estudio__info-item p {
  font-size: 1rem;
  line-height: 1.7;
}

.estudio__info-item a {
  color: var(--gold-light);
}

.estudio__info-item a:hover {
  color: var(--gold);
}

/* ---- Avaliação ---- */
.section--avaliacao {
  background: var(--bg-primary);
  overflow: hidden;
}

.avaliacao__glow {
  position: absolute;
  bottom: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.avaliacao__inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(40px, 6vw, 72px);
  align-items: start;
  padding: clamp(40px, 5vw, 64px);
  background: linear-gradient(135deg, rgba(0, 18, 32, 0.8) 0%, rgba(18, 18, 18, 0.9) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
}

.avaliacao__text p {
  margin-bottom: 22px;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(209, 209, 209, 0.92);
}

.avaliacao__highlight {
  font-family: var(--font-serif);
  font-size: clamp(1.125rem, 2vw, 1.3125rem);
  font-weight: 500;
  color: var(--white);
  line-height: 1.55;
  margin: 36px 0;
  padding-left: 24px;
  border-left: 2px solid var(--gold);
}

.avaliacao__steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.avaliacao__step {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.avaliacao__step:hover {
  border-color: rgba(0, 212, 255, 0.2);
  transform: translateX(8px);
}

.avaliacao__step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  background: var(--gold-gradient);
  color: #0a0a0a;
  border-radius: 50%;
}

.avaliacao__step strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--white);
}

.avaliacao__step p {
  font-size: 0.875rem;
  color: var(--gray-muted);
  line-height: 1.6;
}

/* ---- Footer ---- */
.footer {
  padding: 48px 0 32px;
  background: #050505;
  border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer__nav a:hover {
  color: var(--gold-light);
}

.footer__divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
  margin-bottom: 24px;
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.04em;
}

.footer__logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: block;
}

.footer__nav a {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--gray-muted);
}

.footer__copy {
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray-muted);
  line-height: 1.85;
  max-width: 52rem;
  margin: 0 auto;
}

.footer__copy a {
  color: var(--gold-light);
}

.footer__copy a:hover {
  color: var(--gold);
}

/* ---- WhatsApp Float ---- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25d366;
  color: var(--white);
  border-radius: 50%;
  box-shadow: 0 4px 24px rgba(37, 211, 102, 0.4);
  transition: all var(--transition);
  animation: floatPulse 3s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.6);
}

@keyframes floatPulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 32px rgba(37, 211, 102, 0.7); }
}

/* ---- Reveal Animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */

/* Tablet */
@media (max-width: 1100px) {
  .aulas__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .aula-card:last-child {
    grid-column: 1 / -1;
    max-width: 520px;
    justify-self: center;
    width: 100%;
  }

  .dev__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dev-card:last-child {
    grid-column: 1 / -1;
    max-width: 520px;
    justify-self: center;
    width: 100%;
  }
}

@media (max-width: 992px) {
  .about__grid,
  .avaliacao__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about__grid {
    grid-template-columns: 1fr;
  }

  .about__visual {
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }

  .formacao__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .formacao__item--wide {
    grid-column: span 2;
  }

  .estudio__features {
    grid-template-columns: repeat(2, 1fr);
  }

  .estudio__info {
    grid-template-columns: 1fr;
  }

  /* Menu mobile a partir de tablet */
  .nav__toggle {
    display: flex;
    position: relative;
    z-index: 1002;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transform: translateX(100%);
    transition: transform var(--transition), visibility var(--transition);
    padding: calc(var(--header-h) + 24px) 24px 40px;
    z-index: 1001;
    overflow-y: auto;
    pointer-events: none;
    visibility: hidden;
  }

  .nav__menu.open {
    transform: translateX(0);
    pointer-events: auto;
    visibility: visible;
  }

  .nav__menu li {
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .nav__link::after {
    display: none;
  }

  .nav__link {
    font-size: 1.125rem;
    padding: 14px 28px;
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .nav__cta {
    margin-top: 20px;
    width: 100%;
    max-width: 320px;
    justify-content: center;
    padding: 14px 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 68px;
    --section-gap: 72px;
  }

  body {
    padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
  }

  .nav__logo {
    font-size: 0.9375rem;
    gap: 10px;
  }

  .nav__logo-icon {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
  }

  .hero {
    min-height: 100svh;
    min-height: 100dvh;
  }

  .hero__img {
    object-position: center top;
  }

  .hero__overlay {
    background:
      linear-gradient(to bottom, rgba(10, 10, 10, 0.75) 0%, rgba(10, 10, 10, 0.88) 55%, rgba(10, 10, 10, 0.95) 100%);
  }

  .hero__content {
    padding: calc(var(--header-h) + 32px) 0 48px;
  }

  .hero__inner {
    max-width: 100%;
  }

  .hero__eyebrow {
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    gap: 8px;
    margin-bottom: 20px;
  }

  .hero__eyebrow-sep {
    display: none;
  }

  .hero__title {
    font-size: clamp(2.5rem, 11vw, 3.5rem);
    margin-bottom: 18px;
  }

  .hero__divider {
    width: 48px;
    margin-bottom: 24px;
  }

  .hero__subtitle {
    font-size: 1rem;
    line-height: 1.75;
    margin-top: 30px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 52px;
  }

  .hero__scroll {
    display: none;
  }

  .hero__glow--blue,
  .hero__glow--gold {
    width: 220px;
    height: 220px;
  }

  .section__header {
    margin-bottom: 40px;
  }

  .section__title {
    font-size: clamp(1.625rem, 6vw, 2.125rem);
  }

  .section__desc {
    font-size: 1rem;
  }

  .section__label::before {
    width: 16px;
  }

  .about__grid {
    gap: 36px;
  }

  .about__visual {
    order: -1;
    max-width: 100%;
  }

  .about__image-wrap img,
  .about__img {
    aspect-ratio: 3 / 4;
    object-position: center 8%;
  }

  .teacher-card {
    padding: 24px 20px;
  }

  .teacher-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .teacher-card__name {
    font-size: 1.25rem;
  }

  .aulas__grid,
  .dev__grid {
    grid-template-columns: 1fr;
    max-width: 100%;
  }

  .aula-card:last-child,
  .dev-card:last-child {
    grid-column: auto;
    max-width: 100%;
  }

  .aula-card,
  .dev-card {
    padding: 28px 22px;
  }

  .aula-card__badge {
    top: 16px;
    right: 16px;
    font-size: 0.625rem;
  }

  .formacao__grid {
    grid-template-columns: 1fr;
  }

  .formacao__item--wide {
    grid-column: span 1;
  }

  .formacao__item {
    padding: 20px 22px;
  }

  .formacao__note {
    padding: 22px 20px;
    font-size: 1rem;
  }

  .estudio__features {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .estudio__tags {
    gap: 8px;
    margin: 24px 0;
  }

  .tag {
    font-size: 0.75rem;
    padding: 8px 14px;
  }

  .avaliacao__inner {
    padding: 28px 20px;
    gap: 36px;
  }

  .avaliacao__highlight {
    margin: 28px 0;
    padding-left: 18px;
    font-size: 1.0625rem;
  }

  .avaliacao__inner .btn--whatsapp {
    width: 100%;
    min-height: 52px;
  }

  .avaliacao__step {
    padding: 18px;
    gap: 16px;
  }

  .avaliacao__step:hover {
    transform: none;
  }

  .footer {
    padding: 40px 0 calc(28px + env(safe-area-inset-bottom, 0px));
  }

  .footer__top {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .footer__nav {
    justify-content: center;
    gap: 16px 20px;
  }

  .footer__copy {
    font-size: 0.8125rem;
    padding: 0 8px;
  }

  .whatsapp-float {
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    right: calc(16px + env(safe-area-inset-right, 0px));
    width: 54px;
    height: 54px;
  }

  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

  .hero__title {
    font-size: 2.625rem;
  }

  .btn--lg {
    padding: 14px 20px;
    font-size: 0.875rem;
  }

  .btn--sm {
    font-size: 0.8125rem;
  }

  .section__header--decorated::after {
    width: 40px;
    margin-top: 20px;
  }

  .dev-card__number {
    font-size: 2.25rem;
  }

  .aula-card__icon {
    font-size: 2rem;
    margin-bottom: 14px;
  }
}

@media (max-width: 360px) {
  .nav__logo {
    font-size: 0.8125rem;
    letter-spacing: 0.02em;
  }

  .hero__eyebrow {
    flex-direction: column;
    align-items: flex-start;
    letter-spacing: 0.08em;
  }

  .hero__title {
    font-size: 2.375rem;
  }
}