/* ==========================================================================
   Marta Cristina | Neuropsicóloga - Stylesheet
   ========================================================================== */

:root {
  --color-primary: #1e6091;
  --color-primary-dark: #14496b;
  --color-primary-light: #4f93c4;
  --color-accent: #8ecae6;
  --color-bg: #ffffff;
  --color-bg-soft: #f4f9fd;
  --color-bg-alt: #eef6fb;
  --color-text: #1f2d3a;
  --color-text-light: #5b6b7c;
  --color-border: #dceaf4;
  --color-white: #ffffff;

  --font-heading: 'Playfair Display', serif;
  --font-body: 'Poppins', sans-serif;

  --shadow-sm: 0 4px 16px rgba(20, 73, 107, 0.08);
  --shadow-md: 0 10px 30px rgba(20, 73, 107, 0.12);
  --shadow-lg: 0 20px 50px rgba(20, 73, 107, 0.18);

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  --header-height: 80px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.7;
  background-color: var(--color-bg);
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
}

/* ==========================================================================
   Utility
   ========================================================================== */
.tag {
  display: inline-block;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 18px;
  border-radius: 50px;
  margin-bottom: 18px;
  border: 1px solid var(--color-border);
}

.tag--center {
  display: block;
  width: fit-content;
  margin: 0 auto 18px;
}

.text-gradient {
  background: linear-gradient(120deg, var(--color-primary) 0%, var(--color-primary-light) 60%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.section-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.25;
  color: var(--color-primary-dark);
  margin-bottom: 22px;
}

.section-title--center {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 18px;
}

.section-text {
  color: var(--color-text-light);
  font-size: 1.02rem;
  margin-bottom: 18px;
}

.section-text--center {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.btn--full {
  width: 100%;
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
  height: 72px;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo__img {
  height: 56px;
  width: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.header.scrolled .logo__img {
  height: 46px;
}

.nav__list {
  display: flex;
  gap: 32px;
}

.nav__link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  position: relative;
  padding-bottom: 6px;
  transition: var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

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

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.header__cta {
  font-size: 0.9rem;
  padding: 12px 26px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  z-index: 1100;
}

.nav__toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-primary-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-bg-soft) 0%, var(--color-bg) 100%);
}

.hero__bg-shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary-light) 100%);
  opacity: 0.18;
  filter: blur(10px);
  z-index: 0;
}

.hero__bg-shape {
  width: 520px;
  height: 520px;
  top: -180px;
  right: -180px;
}

.hero__bg-shape--2 {
  width: 360px;
  height: 360px;
  bottom: -120px;
  left: -120px;
  opacity: 0.14;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.2;
  color: var(--color-primary-dark);
  margin-bottom: 24px;
}

.hero__text {
  color: var(--color-text-light);
  font-size: 1.08rem;
  max-width: 540px;
  margin-bottom: 32px;
}

.hero__actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero__stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  max-width: 180px;
}

.hero__stat-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.hero__stat-plus {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

.hero__media {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero__img-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
}

.hero__img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 6px solid var(--color-white);
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

.hero__badge {
  position: absolute;
  bottom: 24px;
  left: -30px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-md);
  animation: float 4s ease-in-out infinite;
}

.hero__badge i {
  font-size: 1.8rem;
  color: var(--color-primary);
}

.hero__badge strong {
  display: block;
  font-size: 0.95rem;
  color: var(--color-primary-dark);
}

.hero__badge span {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  animation: bounce 2.2s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -10px); }
}

/* ==========================================================================
   About
   ========================================================================== */
.about {
  background: var(--color-bg);
}

.about__inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: center;
}

.about__media {
  position: relative;
}

.about__img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4 / 5;
  position: relative;
  z-index: 1;
}

.about__shape {
  position: absolute;
  width: 80%;
  height: 80%;
  border: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
  bottom: -24px;
  right: -24px;
  z-index: 0;
}

.about__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 26px 0 32px;
}

.about__list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--color-text);
}

.about__list i {
  color: var(--color-primary);
  font-size: 1.1rem;
}

/* ==========================================================================
   Services
   ========================================================================== */
.services {
  background: var(--color-bg-soft);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: 22px;
  transition: var(--transition);
}

.service-card:hover .service-card__icon {
  transform: rotate(-8deg) scale(1.08);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 22px;
  flex-grow: 1;
}

.service-card__link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.service-card__link i {
  transition: var(--transition);
}

.service-card__link:hover i {
  transform: translateX(4px);
}

/* ==========================================================================
   Approach (TCC)
   ========================================================================== */
.approach {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.approach::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  top: -250px;
  right: -150px;
}

.approach__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.approach .tag {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.2);
}

.approach .section-title {
  color: var(--color-white);
}

.approach .section-text {
  color: rgba(255, 255, 255, 0.85);
}

.approach__benefits {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 30px;
}

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

.approach__benefit i {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-top: 4px;
}

.approach__benefit h4 {
  font-size: 1.02rem;
  margin-bottom: 6px;
}

.approach__benefit p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.75);
}

.approach__media {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.approach__circle {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 2px dashed rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: spin-slow 18s linear infinite;
}

.approach__circle i {
  font-size: 5rem;
  color: var(--color-accent);
  animation: spin-slow-reverse 18s linear infinite;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spin-slow-reverse {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

.approach__quote {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.approach__quote i {
  color: var(--color-accent);
  font-size: 1.4rem;
  margin-bottom: 12px;
  display: block;
}

.approach__quote p {
  font-style: italic;
  font-size: 0.98rem;
  line-height: 1.6;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */
.testimonials {
  background: var(--color-bg);
}

.testimonials__track-wrapper {
  overflow: hidden;
}

.testimonials__track {
  display: flex;
  gap: 28px;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
  flex: 0 0 100%;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.testimonial-card__stars {
  color: #f5b942;
  margin-bottom: 16px;
  font-size: 1rem;
}

.testimonial-card p {
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.1rem;
}

.testimonial-card__author strong {
  display: block;
  color: var(--color-primary-dark);
  font-size: 0.98rem;
}

.testimonial-card__author span {
  font-size: 0.82rem;
  color: var(--color-text-light);
}

.testimonials__dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
}

.testimonials__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.testimonials__dot.active {
  background: var(--color-primary);
  width: 28px;
  border-radius: 6px;
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq {
  background: var(--color-bg-soft);
}

.faq__inner {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
  align-items: flex-start;
}

.faq__content {
  position: sticky;
  top: 120px;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-item__question {
  width: 100%;
  text-align: left;
  padding: 22px 26px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-primary-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item__question i {
  color: var(--color-primary);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-item__question i {
  transform: rotate(180deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item__answer p {
  padding: 0 26px 22px;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.faq-item.active .faq-item__answer {
  max-height: 240px;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact {
  background: var(--color-bg);
}

.contact__inner {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 50px;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact__card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.contact__card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-3px);
}

.contact__card i {
  font-size: 1.6rem;
  color: var(--color-primary);
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__card h4 {
  font-size: 0.92rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
  font-weight: 500;
}

.contact__card a,
.contact__card span {
  font-weight: 600;
  color: var(--color-primary-dark);
  font-size: 1.02rem;
}

.contact__crisis {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fff5ea;
  border: 1px solid #ffe1bf;
  border-radius: var(--radius-md);
  padding: 22px;
  margin-top: 4px;
}

.contact__crisis i {
  color: #e8985e;
  font-size: 1.4rem;
  margin-top: 2px;
}

.contact__crisis p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.contact__form {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.form-group input,
.form-group textarea {
  font-family: inherit;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  background: var(--color-white);
  transition: var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 4px rgba(78, 147, 196, 0.15);
}

.form-note {
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  min-height: 20px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding-top: 70px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
  height: 64px;
  width: auto;
  border-radius: 12px;
  margin-bottom: 18px;
}

.footer__brand p {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 320px;
}

.footer h4 {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.footer__links ul,
.footer__contact ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__links a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.65);
  transition: var(--transition);
}

.footer__links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer__contact li {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__social {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.footer__social a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  transform: translateY(-3px);
}

.footer__bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ==========================================================================
   Floating WhatsApp Button
   ========================================================================== */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 64px;
  height: 64px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 2rem;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
  z-index: 1200;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float__pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #25d366;
  opacity: 0.55;
  animation: pulse 2.2s infinite;
  z-index: -1;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.55; }
  70% { transform: scale(1.8); opacity: 0; }
  100% { transform: scale(1.8); opacity: 0; }
}

/* ==========================================================================
   Back to top
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: 28px;
  left: 28px;
  width: 50px;
  height: 50px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */
[data-aos] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .hero__inner,
  .about__inner,
  .approach__inner,
  .faq__inner,
  .contact__inner {
    grid-template-columns: 1fr;
  }

  .about__inner {
    gap: 50px;
  }

  .about__media {
    order: -1;
    max-width: 460px;
    margin: 0 auto;
  }

  .approach__media {
    order: -1;
  }

  .faq__content {
    position: static;
  }

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

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

  .footer__brand {
    grid-column: span 2;
  }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 80%);
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    padding: 100px 32px 32px;
    box-shadow: var(--shadow-lg);
    transition: right 0.4s ease;
    z-index: 1050;
  }

  .nav.open {
    right: 0;
  }

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

  .nav__toggle {
    display: flex;
  }

  .nav__toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .nav__toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header__cta {
    display: none;
  }

  .hero__stats {
    gap: 28px;
  }

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

@media (max-width: 640px) {
  section {
    padding: 70px 0;
  }

  .logo__img {
    height: 44px;
  }

  .header.scrolled .logo__img {
    height: 38px;
  }

  .footer__logo {
    height: 52px;
  }

  .hero {
    text-align: center;
  }

  .hero__text {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
    text-align: left;
  }

  .hero__badge {
    left: 50%;
    transform: translateX(-50%);
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__brand {
    grid-column: span 1;
  }

  .footer__brand p {
    margin: 0 auto;
  }

  .footer__contact li {
    justify-content: center;
  }

  .footer__social {
    justify-content: center;
  }

  .whatsapp-float {
    width: 56px;
    height: 56px;
    font-size: 1.7rem;
    bottom: 20px;
    right: 20px;
  }

  .back-to-top {
    width: 44px;
    height: 44px;
    bottom: 20px;
    left: 20px;
  }
}