/* ===== Variables ===== */
:root {
  --dark: #051329;
  --dark-mid: #0a1f3d;
  --blue: #80abf4;
  --blue-hover: #6b9ae8;
  --blue-light: #e8f0fe;
  --off-white: #fafcff;
  --gray: #8a92a6;
  --gray-dark: #5e677d;
  --gray-light: #f0f2f5;
  --white: #ffffff;
  --whatsapp: #25d366;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(5, 19, 41, 0.08);
  --shadow-lg: 0 8px 40px rgba(5, 19, 41, 0.12);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark);
  background: var(--off-white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--blue);
  color: var(--dark);
}
.btn--primary:hover {
  background: var(--blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(128, 171, 244, 0.4);
}

.btn--dark {
  background: var(--dark);
  color: var(--off-white);
}
.btn--dark:hover {
  background: var(--dark-mid);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  border-color: var(--blue);
  color: var(--off-white);
}
.btn--outline:hover {
  background: rgba(128, 171, 244, 0.1);
}

.btn--outline-dark {
  background: transparent;
  border-color: var(--dark);
  color: var(--dark);
}
.btn--outline-dark:hover {
  background: var(--dark);
  color: var(--off-white);
}

.btn--whatsapp {
  background: var(--whatsapp);
  color: var(--white);
}
.btn--whatsapp:hover {
  background: #20bd5a;
  transform: translateY(-1px);
}

.btn--lg { padding: 16px 36px; font-size: 16px; }
.btn--full { width: 100%; }

/* ===== Typography ===== */
.section__title {
  font-size: 2.2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
}

.section__title--left { text-align: left; }

.section__subtitle {
  text-align: center;
  font-size: 1.1rem;
  margin-bottom: 48px;
}

.text-gradient {
  color: var(--blue);
  -webkit-text-fill-color: var(--blue);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: var(--transition);
}

.header--scrolled {
  background: rgba(250, 252, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__logo-symbol { height: 32px; width: auto; }

.header__logo-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
  line-height: 1;
}

.header__logo-prefix,
.header__logo-name {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--off-white);
  transition: var(--transition);
}

.header--scrolled .header__logo-prefix,
.header--scrolled .header__logo-name {
  color: var(--dark);
}

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

.header__link {
  font-size: 14px;
  font-weight: 500;
  color: rgba(250, 252, 255, 0.7);
  transition: var(--transition);
}
.header__link:hover { color: var(--off-white); }

.header--scrolled .header__link { color: var(--gray-dark); }
.header--scrolled .header__link:hover { color: var(--dark); }

.header__cta {
  font-size: 14px;
  padding: 10px 24px;
  background: var(--blue);
  color: var(--dark);
}

.header__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.header__menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--off-white);
  border-radius: 2px;
  transition: var(--transition);
}
.header--scrolled .header__menu-btn span { background: var(--dark); }
.header__menu-btn--open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.header__menu-btn--open span:nth-child(2) { opacity: 0; }
.header__menu-btn--open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  padding: 160px 0 120px;
  background: var(--dark);
  color: var(--off-white);
  position: relative;
  overflow: hidden;
}

/* Circular brain-wave pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  top: -250px;
  left: -200px;
  width: 800px;
  height: 800px;
  border: 1px solid rgba(128, 171, 244, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -350px;
  right: -150px;
  width: 700px;
  height: 700px;
  border: 1px solid rgba(128, 171, 244, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero__inner--centered {
  display: flex;
  justify-content: center;
  text-align: center;
}

.hero__content--centered {
  max-width: 720px;
}

.hero__title {
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--off-white);
}

.hero__subtitle {
  font-size: 1.15rem;
  color: rgba(250, 252, 255, 0.7);
  margin-bottom: 16px;
  max-width: 500px;
}

.hero__content--centered .hero__subtitle {
  max-width: none;
}

.hero__location {
  font-size: 14px;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}

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

.hero__content--centered .hero__actions {
  justify-content: center;
}

.hero__image { display: flex; justify-content: center; }

.hero__image img {
  max-height: 480px;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(5, 19, 41, 0.15));
}

/* ===== Solucoes ===== */
.solucoes {
  padding: 100px 0;
  background: var(--off-white);
}

.solucoes .section__title { color: var(--dark); }
.solucoes .section__subtitle { color: var(--gray-dark); }

.solucoes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--gray-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue);
}

.card__tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  align-self: flex-start;
}
.card__tag--blue {
  background: var(--blue-light);
  color: #3b6fb8;
}
.card__tag--purple {
  background: var(--dark);
  color: var(--blue);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 12px;
  line-height: 1.3;
  color: var(--dark);
}

.card__text {
  color: var(--gray-dark);
  margin-bottom: 0;
  font-size: 14px;
}

.solucoes__cta {
  text-align: center;
  margin-top: 48px;
}

.solucoes__cta p {
  color: var(--gray-dark);
  margin-bottom: 16px;
  font-size: 1.1rem;
}

/* ===== Metodo ===== */
.metodo {
  padding: 100px 0;
  background: var(--dark);
  color: var(--off-white);
  position: relative;
  overflow: hidden;
}

/* Subtle circle pattern */
.metodo::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -200px;
  width: 500px;
  height: 500px;
  border: 1px solid rgba(128, 171, 244, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

.metodo .section__title { color: var(--off-white); }
.metodo .section__subtitle { color: rgba(250, 252, 255, 0.5); }

.metodo__steps {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 12px;
}

.step__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--dark);
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step__number--final {
  background: var(--off-white);
  color: var(--dark);
}

.step h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 14px;
  color: rgba(250, 252, 255, 0.6);
  line-height: 1.5;
}

.step__arrow {
  display: flex;
  align-items: center;
  padding-top: 16px;
  color: rgba(128, 171, 244, 0.3);
  flex-shrink: 0;
}

/* ===== Depoimentos ===== */
.depoimentos {
  padding: 100px 0;
  background: var(--white);
}

.depoimentos .section__title { color: var(--dark); }
.depoimentos .section__subtitle { color: var(--gray-dark); }

.depoimentos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.depoimento {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--gray-light);
}

.depoimento__stars {
  color: var(--blue);
  font-size: 18px;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.depoimento__text {
  color: var(--dark);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.depoimento__author strong {
  display: block;
  font-size: 14px;
  color: var(--dark);
}

.depoimento__author span {
  color: var(--gray-dark);
  font-size: 13px;
}

/* ===== Diferenciais ===== */
.diferenciais {
  padding: 100px 0;
  background: var(--dark);
  color: var(--off-white);
  position: relative;
  overflow: hidden;
}

.diferenciais::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 500px;
  height: 500px;
  border: 1px solid rgba(128, 171, 244, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.diferenciais .section__title { color: var(--off-white); }

.diferenciais__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}

.diferencial {
  text-align: center;
  padding: 32px 24px;
}

.diferencial__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(128, 171, 244, 0.15);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.diferencial__icon svg { width: 24px; height: 24px; }
.diferencial__icon--purple {
  background: rgba(128, 171, 244, 0.1);
  color: var(--blue);
}

.diferencial h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--off-white);
}
.diferencial p {
  color: rgba(250, 252, 255, 0.6);
  font-size: 14px;
}

/* ===== Equipe ===== */
.equipe {
  padding: 100px 0;
  background: var(--white);
}

.equipe .section__title { color: var(--dark); }
.equipe .section__subtitle { color: var(--gray-dark); }

.equipe__grid {
  display: flex;
  gap: 48px;
  justify-content: center;
}

.equipe__member {
  text-align: center;
  max-width: 320px;
}

.equipe__photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--blue);
}

.equipe__member h3 {
  font-size: 1.2rem;
  margin-bottom: 4px;
  color: var(--dark);
}

.equipe__role {
  color: var(--blue);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 12px;
}

.equipe__bio {
  color: var(--gray-dark);
  font-size: 14px;
}

/* ===== Sobre ===== */
.sobre {
  padding: 100px 0;
  background: var(--off-white);
}

.sobre .section__title { color: var(--dark); }

.sobre__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.sobre__content p {
  color: var(--gray-dark);
  margin-bottom: 16px;
}

.sobre__image-placeholder {
  background: var(--gray-light);
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--gray);
}

.sobre__photo {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 400px;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

/* ===== Contato ===== */
.contato {
  padding: 100px 0;
  background: var(--dark);
  color: var(--off-white);
  position: relative;
  overflow: hidden;
}

.contato::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -200px;
  width: 600px;
  height: 600px;
  border: 1px solid rgba(128, 171, 244, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.contato .section__title { color: var(--off-white); }
.contato .section__subtitle { color: rgba(250, 252, 255, 0.6); }

.contato__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  position: relative;
  z-index: 1;
}

.contato__item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(128, 171, 244, 0.1);
}
.contato__item svg {
  color: var(--blue);
  flex-shrink: 0;
  margin-top: 2px;
}
.contato__item strong {
  display: block;
  margin-bottom: 4px;
  color: var(--off-white);
}
.contato__item p { color: rgba(250, 252, 255, 0.6); font-size: 14px; }
.contato__item a { color: var(--blue); }
.contato__item a:hover { text-decoration: underline; }

.contato__chat-cta {
  background: var(--dark-mid);
  border: 1px solid rgba(128, 171, 244, 0.1);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.contato__luna {
  width: 120px;
  margin: 0 auto 20px;
  border-radius: 50%;
}

.contato__chat-cta h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--off-white);
}
.contato__chat-cta p {
  color: rgba(250, 252, 255, 0.6);
  margin-bottom: 24px;
  font-size: 14px;
}

/* ===== Footer ===== */
.footer {
  background: #030d1a;
  color: rgba(250, 252, 255, 0.5);
  padding: 60px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer__logo-symbol { height: 28px; width: auto; }

.footer__logo-text {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--off-white);
}

.footer__logo-text strong {
  font-weight: 600;
}
.footer__brand p { font-size: 14px; }

.footer__links h4 {
  color: var(--off-white);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer__links a, .footer__links span {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  transition: var(--transition);
}
.footer__links a:hover { color: var(--blue); }

.footer__bottom {
  border-top: 1px solid rgba(250, 252, 255, 0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}

/* ===== Chat Widget ===== */
.chat {
  position: fixed;
  bottom: 100px;
  right: 24px;
  width: 380px;
  height: 520px;
  max-height: calc(100vh - 140px);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
  transition: var(--transition);
}

.chat--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.chat__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--dark);
  color: var(--off-white);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-shrink: 0;
}

.chat__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.chat__header strong { display: block; font-size: 15px; }
.chat__header span { font-size: 12px; color: var(--blue); }

.chat__close {
  margin-left: auto;
  background: none;
  border: none;
  color: rgba(250, 252, 255, 0.6);
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}
.chat__close:hover { color: var(--off-white); }

.chat__messages {
  flex: 1 1 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.chat__message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.5;
  animation: fadeIn 0.3s ease;
}

.chat__message--bot {
  background: var(--gray-light);
  color: var(--dark);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat__message--user {
  background: var(--dark);
  color: var(--off-white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat__message a {
  color: var(--blue);
  text-decoration: underline;
  word-break: break-all;
}

.chat__message--user a { color: var(--blue-light); }

.chat__message--typing {
  display: flex;
  gap: 4px;
  padding: 16px 20px;
}

.chat__message--typing span {
  width: 8px;
  height: 8px;
  background: var(--gray);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

.chat__message--typing span:nth-child(2) { animation-delay: 0.2s; }
.chat__message--typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat__input {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--gray-light);
  flex-shrink: 0;
}

.chat__input input {
  flex: 1;
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-family: inherit;
  font-size: 16px;
  outline: none;
  transition: var(--transition);
}
.chat__input input:focus { border-color: var(--blue); }

.chat__input button {
  background: var(--dark);
  border: none;
  border-radius: var(--radius);
  padding: 12px 16px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  color: var(--off-white);
  transition: var(--transition);
  flex-shrink: 0;
}
.chat__input button:hover { background: var(--dark-mid); }

/* Chat Toggle */
.chat__toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--dark);
  border: 2px solid var(--blue);
  cursor: pointer;
  z-index: 200;
  box-shadow: 0 4px 20px rgba(5, 19, 41, 0.3);
  transition: var(--transition);
  padding: 0;
  overflow: hidden;
}

.chat__toggle:hover { transform: scale(1.08); }

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

.chat__toggle-badge {
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  background: var(--blue);
  border-radius: 50%;
  border: 2px solid var(--dark);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* ===== Proposal Card (inside chat) ===== */
.chat__message--proposal {
  max-width: 95%;
  padding: 0;
  background: none;
}

.chat__proposal {
  background: linear-gradient(135deg, #f8f9ff 0%, #eef2ff 100%);
  border: 1px solid rgba(128, 171, 244, 0.3);
  border-radius: var(--radius);
  padding: 20px;
  font-size: 13px;
  line-height: 1.5;
}

.chat__proposal-header {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(128, 171, 244, 0.2);
}

.chat__proposal-header strong {
  font-size: 15px;
  color: var(--dark);
}

.chat__proposal-header span {
  font-size: 12px;
  color: var(--blue);
  font-weight: 500;
}

.chat__proposal-for {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 8px;
}

.chat__proposal-desc {
  font-size: 12px;
  color: var(--gray);
  margin-bottom: 12px;
}

.chat__proposal-items {
  list-style: none;
  padding: 0;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chat__proposal-items li {
  font-size: 13px;
  color: var(--dark);
  padding-left: 20px;
  position: relative;
}

.chat__proposal-items li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 700;
}

.chat__proposal-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 12px;
}

.chat__proposal-price {
  display: flex;
  flex-direction: column;
}

.chat__proposal-price strong {
  font-size: 20px;
  color: var(--dark);
}

.chat__proposal-price span {
  font-size: 11px;
  color: var(--gray);
}

.chat__proposal-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.chat__proposal-meta span {
  font-size: 11px;
  color: var(--gray);
  background: var(--white);
  padding: 2px 8px;
  border-radius: 4px;
}

.chat__proposal-eval {
  background: var(--white);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
  text-align: center;
}

.chat__proposal-eval p {
  font-size: 12px;
  color: var(--gray);
}

.chat__proposal-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--whatsapp);
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
  width: 100%;
}

.chat__proposal-cta--online {
  background: var(--blue);
  color: var(--dark);
}

.chat__proposal-cta--online:hover {
  background: var(--blue-hover);
  transform: translateY(-1px);
}

.chat__proposal-cta:hover {
  background: #20bd5a;
  transform: translateY(-1px);
}

.chat__proposal-cta svg {
  flex-shrink: 0;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header {
    background: rgba(5, 19, 41, 0.95);
    backdrop-filter: blur(12px);
  }

  .header__nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--dark);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow);
  }

  .header__nav--open { display: flex; }
  .header__cta { display: none; }
  .header__menu-btn { display: flex; }

  .hero { padding: 120px 0 80px; }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero__inner--centered { padding: 20px 0; }

  .hero__title { font-size: 2.2rem; }
  .hero__subtitle { max-width: none; }
  .hero__actions { justify-content: center; }
  .hero__image img { max-height: 320px; }

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

  .metodo__steps {
    flex-direction: column;
    align-items: center;
  }

  .step { max-width: 400px; }

  .step__arrow { transform: rotate(90deg); }

  .diferenciais__grid { grid-template-columns: 1fr 1fr; gap: 16px; }

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

  .equipe__grid { flex-direction: column; align-items: center; }

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

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

  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__brand { grid-column: 1 / -1; }

  .section__title { font-size: 1.8rem; }

  .chat {
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    max-height: none;
    border-radius: 0;
  }

  .chat__header {
    border-radius: 0;
  }

  .chat__messages {
    padding: 16px;
  }

  .chat__input {
    padding: 12px 16px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }
}

@media (max-width: 480px) {
  .hero__title { font-size: 1.8rem; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .diferenciais__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
}