/* ===== Design System ===== */
:root {
  --color-primary: #0077C2;
  --color-primary-dark: #005A96;
  --color-text: #0A2540;
  --color-text-muted: #3A5A7A;
  --color-bg: #FFFFFF;
  --color-bg-tint: #F5FAFD;
  --color-border: #E0E8F0;
  --color-whatsapp: #25D366;
  --color-whatsapp-dark: #1DA851;
  --gradient-hero: linear-gradient(135deg, #E8F4FA 0%, #C3E0F0 100%);
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.1);

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  --container-max: 1120px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { line-height: 1.2; color: var(--color-text); }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-2);
}
@media (min-width: 768px) {
  .container { padding: 0 var(--space-3); }
}

/* ===== Section ===== */
.section { padding: var(--space-6) 0; }
.section--tint { background: var(--color-bg-tint); }
@media (min-width: 768px) {
  .section { padding: var(--space-8) 0; }
}

.section__title {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-1);
}
.section__subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--space-4);
}
@media (min-width: 768px) {
  .section__title { font-size: 32px; }
  .section__subtitle { font-size: 16px; margin-bottom: var(--space-6); }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 48px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.1s, background 0.15s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }

.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); }

.btn--whatsapp { background: var(--color-whatsapp); color: #fff; }
.btn--whatsapp:hover { background: var(--color-whatsapp-dark); }

.btn--ghost {
  background: rgba(255, 255, 255, 0.8);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn--ghost:hover { background: #fff; }

/* ===== Utility ===== */
.badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  gap: var(--space-2);
}
.header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: 700;
  color: var(--color-text);
}
.header__name { font-size: 15px; }
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.header__phone {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text);
  white-space: nowrap;
}
.header__phone:hover { color: var(--color-primary); }
.header__wa {
  min-height: 40px;
  padding: 0 var(--space-2);
  font-size: 13px;
}
/* Hide phone text on very small screens — WhatsApp button stays */
@media (max-width: 400px) {
  .header__phone { display: none; }
}
@media (min-width: 768px) {
  .header__inner { min-height: 72px; }
  .header__name { font-size: 17px; }
  .header__phone { font-size: 16px; }
  .header__wa { min-height: 44px; font-size: 14px; }
}

/* ===== Hero ===== */
.hero {
  background: var(--gradient-hero);
  padding: var(--space-6) 0;
  overflow: hidden;
}
.hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.hero__badge { margin-bottom: var(--space-2); }
.hero__title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.hero__subtitle {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.hero__cta .btn { width: 100%; }
.hero__image {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
}
.hero__drop {
  font-size: 120px;
  opacity: 0.3;
  filter: drop-shadow(0 8px 16px rgba(0, 119, 194, 0.2));
}
@media (min-width: 768px) {
  .hero { padding: var(--space-8) 0 var(--space-12); }
  .hero__inner {
    flex-direction: row;
    align-items: center;
    gap: var(--space-6);
  }
  .hero__content { flex: 1; }
  .hero__title { font-size: 40px; }
  .hero__subtitle { font-size: 17px; }
  .hero__cta { flex-direction: row; }
  .hero__cta .btn { width: auto; }
  .hero__image { flex: 0 0 280px; min-height: 280px; }
  .hero__drop { font-size: 200px; }
}

/* ===== Services ===== */
.services {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}
.service {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  transition: box-shadow 0.15s, transform 0.1s;
}
.service:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.service__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-hero);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}
.service__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.service__text {
  font-size: 14px;
  color: var(--color-text-muted);
}
@media (min-width: 600px) {
  .services { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .services { grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }
}

/* ===== Benefits ===== */
.benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}
.benefit {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  box-shadow: var(--shadow-card);
}
.benefit__icon {
  font-size: 32px;
  margin-bottom: var(--space-1);
}
.benefit__title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
}
.benefit__text {
  font-size: 14px;
  color: var(--color-text-muted);
}
@media (min-width: 600px) {
  .benefits { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .benefits { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}

/* ===== How-it-works (Steps) ===== */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
.step {
  text-align: center;
  padding: var(--space-3) var(--space-2);
}
.step__number {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-2);
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 24px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 119, 194, 0.3);
}
.step__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.step__text {
  font-size: 14px;
  color: var(--color-text-muted);
}
@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

/* ===== Pricing ===== */
.pricing {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.pricing__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-2);
}
.pricing__row:last-child { border-bottom: none; }
.pricing__service {
  font-size: 15px;
  font-weight: 500;
}
.pricing__price {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}
.pricing__price--free { color: var(--color-whatsapp); }
.pricing__value {
  display: inline-block;
  min-width: 40px;
  text-align: right;
}
.pricing__note {
  max-width: 720px;
  margin: var(--space-3) auto 0;
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
}
@media (min-width: 768px) {
  .pricing__row { padding: var(--space-3) var(--space-4); }
  .pricing__service { font-size: 16px; }
  .pricing__price { font-size: 17px; }
}

/* ===== Testimonials ===== */
.testimonials {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}
.testimonial {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
}
.testimonial__stars {
  color: #FFB800;
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: var(--space-1);
}
.testimonial__text {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  font-style: italic;
}
.testimonial__author {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
}
@media (min-width: 768px) {
  .testimonials { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}

/* ===== Gallery ===== */
.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}
.gallery__item {
  margin: 0;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.gallery__item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
.gallery__item figcaption {
  padding: var(--space-1) var(--space-2);
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
}
@media (min-width: 600px) {
  .gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .gallery { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}

/* ===== FAQ ===== */
.faq {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.faq__item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq__question {
  padding: var(--space-2) var(--space-3);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}
.faq__question::-webkit-details-marker { display: none; }
.faq__question::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.faq__item[open] .faq__question::after {
  content: "−";
}
.faq__answer {
  padding: 0 var(--space-3) var(--space-2);
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}
@media (min-width: 768px) {
  .faq__question { font-size: 16px; padding: var(--space-3); }
  .faq__answer { font-size: 15px; padding: 0 var(--space-3) var(--space-3); }
}

/* ===== Form ===== */
.form {
  max-width: 480px;
  margin: 0 auto;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-3);
}
.form__row {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-2);
}
.form__label {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}
.form__input {
  min-height: 48px;
  padding: 0 var(--space-2);
  font-size: 16px;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
}
.form__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 119, 194, 0.15);
}
.form__input.is-invalid {
  border-color: #E53935;
}
.form__error {
  font-size: 13px;
  color: #E53935;
  margin-top: 4px;
}
.form__submit {
  width: 100%;
  margin-top: var(--space-1);
}
.form__hint {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-2);
}
@media (min-width: 768px) {
  .form { padding: var(--space-4); }
}

/* ===== Footer ===== */
.footer {
  background: var(--color-text);
  color: #D8E3EC;
  padding: var(--space-6) 0 var(--space-3);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.footer__col { display: flex; flex-direction: column; gap: 6px; }
.footer__brand {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.footer__heading {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.footer__text {
  font-size: 14px;
  color: #A8B8C8;
  line-height: 1.6;
}
.footer__link {
  font-size: 14px;
  color: #D8E3EC;
  display: inline-block;
}
.footer__link:hover { color: #fff; }
.footer__bottom {
  padding-top: var(--space-2);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #8A9AAA;
  font-size: 13px;
  text-align: center;
}
@media (min-width: 768px) {
  .footer__inner { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

/* ===== Floating WhatsApp Button ===== */
.fab-whatsapp {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-whatsapp);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(37, 211, 102, 0.4);
  z-index: 90;
  animation: fabPulse 2.5s ease-in-out infinite;
}
.fab-whatsapp:hover {
  background: var(--color-whatsapp-dark);
  transform: scale(1.05);
}
@keyframes fabPulse {
  0%, 100% { box-shadow: 0 6px 16px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 6px 16px rgba(37, 211, 102, 0.4), 0 0 0 12px rgba(37, 211, 102, 0); }
}
@media (min-width: 768px) {
  .fab-whatsapp { right: 24px; bottom: 24px; width: 64px; height: 64px; }
  .fab-whatsapp svg { width: 32px; height: 32px; }
}

/* ===== Accessibility polish ===== */
.btn:focus-visible,
.fab-whatsapp:focus-visible,
.header__phone:focus-visible,
.faq__question:focus-visible,
.footer__link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Extra bottom space on mobile contact section so FAB never overlaps submit */
@media (max-width: 767px) {
  #contact { padding-bottom: calc(var(--space-6) + 72px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fab-whatsapp { animation: none; }
  .service, .btn { transition: none; }
}