/* ===================================================================
   Alpha Contabilidade Empresarial
   Paleta: papel quente + tinta naval + latão (gold) como acento de assinatura
=================================================================== */

:root {
  --color-white: #ffffff;
  --color-paper: #f9f6ee;
  --color-paper-alt: #f2ecdd;
  --color-ink: #0c1a2b;
  --color-primary: #123a70;
  --color-primary-dark: #0b2547;
  --color-primary-light: #1f5aa8;
  --color-gold: #b8873a;
  --color-gold-light: #e3c383;
  --color-gold-dark: #8f6524;
  --color-silver: #c7cedb;
  --color-text: #1b2430;
  --color-text-muted: #5a6472;
  --color-border: #e6e0d0;
  --color-border-dark: rgba(255, 255, 255, 0.14);

  --font-heading: 'Fraunces', 'Georgia', serif;
  --font-body: 'Inter', sans-serif;

  --radius: 14px;
  --shadow: 0 10px 30px rgba(12, 26, 43, 0.08);
  --shadow-lg: 0 24px 60px rgba(12, 26, 43, 0.18);
  --transition: 0.25s ease;
  --transition-slow: 0.6s cubic-bezier(.22,.61,.36,1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

em {
  font-style: italic;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 10px 16px;
  z-index: 2000;
}

.skip-link:focus {
  left: 0;
}

/* ================= EYEBROW / SIGNATURE LABEL ================= */

.eyebrow {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  margin: 0 auto 14px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--color-gold);
  display: inline-block;
}

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

.section__title,
.section__lead {
  text-align: center;
}

/* ================= HEADER ================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(249, 246, 238, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.header.is-scrolled {
  background: rgba(249, 246, 238, 0.97);
  border-bottom-color: var(--color-border);
  box-shadow: 0 8px 24px rgba(12, 26, 43, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 84px;
}

.header__brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header__logo {
  height: 60px;
  width: auto;
}

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

.nav__link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-primary-dark);
  transition: color var(--transition);
  position: relative;
  padding: 6px 2px;
}

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

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-gold-dark);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  width: 100%;
}

.header__cta {
  flex-shrink: 0;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
}

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

/* ================= BUTTONS ================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-white);
}

.btn--accent {
  background-color: var(--color-gold);
  color: var(--color-white);
  border-color: var(--color-gold);
  box-shadow: 0 8px 22px rgba(184, 135, 58, 0.35);
}

.btn--accent:hover,
.btn--accent:focus-visible {
  background-color: var(--color-gold-dark);
  border-color: var(--color-gold-dark);
  color: var(--color-white);
  box-shadow: 0 12px 28px rgba(184, 135, 58, 0.45);
}

.btn--outline-light {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.55);
}

.btn--outline-light:hover,
.btn--outline-light:focus-visible {
  background-color: var(--color-white);
  color: var(--color-primary-dark);
  border-color: var(--color-white);
}

/* ================= HERO ================= */

.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 64px;
  display: flex;
  align-items: center;
  color: var(--color-white);
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: -40px -20px;
  background-size: cover;
  background-position: center;
  z-index: -2;
  will-change: transform;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(135deg, rgba(11, 37, 71, 0.94) 0%, rgba(12, 26, 43, 0.9) 45%, rgba(18, 58, 112, 0.82) 100%);
}

.hero__inner {
  display: block;
}

.hero__text {
  max-width: 660px;
}

.hero__text .eyebrow {
  margin-left: 0;
  margin-right: 0;
}

.hero__title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.1;
  margin-bottom: 22px;
  letter-spacing: -0.01em;
}

.hero__title em {
  color: var(--color-gold-light);
  font-weight: 400;
}

.hero__desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 36px;
  max-width: 540px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero__facts {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 28px;
}

.hero__fact dt {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold-light);
  font-weight: 600;
  margin-bottom: 6px;
}

.hero__fact dd {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 500;
}

.hero__scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  z-index: 3;
}

.hero__scroll-cue span {
  width: 4px;
  height: 8px;
  border-radius: 4px;
  background: var(--color-gold-light);
  animation: scrollcue 1.8s ease infinite;
}

@keyframes scrollcue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ================= SECTIONS ================= */

.section {
  padding: 100px 0;
  position: relative;
}

.section--alt {
  background-color: var(--color-paper-alt);
}

.section--band {
  padding: 120px 0;
  color: var(--color-white);
  overflow: hidden;
  isolation: isolate;
}

.section__bg {
  position: absolute;
  inset: -20px;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: -2;
}

.section__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(160deg, rgba(11, 37, 71, 0.92) 0%, rgba(12, 26, 43, 0.86) 100%);
}

.section__scrim--light {
  background: linear-gradient(160deg, rgba(11, 37, 71, 0.88) 0%, rgba(12, 26, 43, 0.82) 100%);
}

.section__title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  color: var(--color-primary-dark);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

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

.section__lead {
  max-width: 720px;
  margin: 0 auto 48px;
  color: var(--color-text-muted);
  font-size: 1.08rem;
}

.section__lead--light {
  color: rgba(255, 255, 255, 0.85);
}

/* ================= CARDS ================= */

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

.cards-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

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

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 30px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card--compact {
  text-align: center;
  padding: 30px 24px;
}

.card__mark {
  display: inline-block;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.card__title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.3rem;
  color: var(--color-primary-dark);
  margin-bottom: 14px;
}

.card__title--sm {
  font-size: 1.1rem;
}

.card__text {
  color: var(--color-text-muted);
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--color-text-muted);
}

.card__list li {
  padding-left: 20px;
  position: relative;
}

.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-gold);
}

.card--wide {
  grid-column: 1 / -1;
  display: flex;
  gap: 44px;
  align-items: flex-start;
}

.card__wide-head {
  flex: 0 0 220px;
  padding-right: 36px;
  border-right: 1px solid var(--color-border);
  align-self: stretch;
}

.card__icon--wide {
  margin-bottom: 20px;
}

.card__list--grid {
  flex: 1;
  margin: 0;
  column-count: 2;
  column-gap: 36px;
}

.card__list--grid li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-left: 0;
  break-inside: avoid;
  margin-bottom: 16px;
}

.card__list--grid li:last-child {
  margin-bottom: 0;
}

.card__list--grid li::before {
  content: none;
}

.card__list-icon {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border-radius: 50%;
  background: rgba(184, 135, 58, 0.12);
  color: var(--color-gold-dark);
}

.card__list-icon svg {
  width: 13px;
  height: 13px;
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(184, 135, 58, 0.1);
  color: var(--color-gold-dark);
  margin-bottom: 16px;
}

.card--compact .card__icon {
  margin-left: auto;
  margin-right: auto;
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.service-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: var(--color-gold);
  border-radius: 0 3px 3px 0;
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-slow);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(184, 135, 58, 0.3);
}

.service-card:hover::before {
  transform: scaleY(1);
}

.service-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(184, 135, 58, 0.1);
  color: var(--color-gold-dark);
  margin-bottom: 20px;
}

.service-card__icon svg {
  width: 24px;
  height: 24px;
}

.service-card__title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.18rem;
  color: var(--color-primary-dark);
  margin-bottom: 10px;
}

.service-card__text {
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

/* ================= ATUAÇÃO ================= */

.atuacao {
  text-align: center;
}

.atuacao__text {
  max-width: 760px;
  margin: 0 auto;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.tag-list li {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border: 1px solid rgba(227, 195, 131, 0.5);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.92rem;
  padding: 11px 22px;
  border-radius: 999px;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.tag-list li:hover {
  background-color: rgba(227, 195, 131, 0.16);
  border-color: var(--color-gold-light);
  transform: translateY(-2px);
}

/* ================= CONTATO ================= */

.contato-grid {
  display: flex;
  justify-content: center;
}

.contato-info {
  width: 100%;
  max-width: 620px;
  background: rgba(249, 246, 238, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 44px;
  backdrop-filter: blur(6px);
}

.contato-info__title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  margin-bottom: 24px;
}

.contato-item {
  padding: 16px 0;
  border-top: 1px solid var(--color-border);
}

.contato-item:first-of-type {
  border-top: none;
}

.contato-item__label {
  display: block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.contato-item__value {
  font-size: 1.04rem;
  color: var(--color-primary);
  font-weight: 500;
}

.contato-item__value--text {
  color: var(--color-text);
  font-weight: 400;
}

a.contato-item__value:hover,
a.contato-item__value:focus-visible {
  color: var(--color-gold-dark);
  text-decoration: underline;
}

.contato-cta {
  margin-top: 16px;
  width: 100%;
}

/* ================= FOOTER ================= */

.footer {
  background-color: var(--color-ink);
  color: rgba(255, 255, 255, 0.85);
  padding: 76px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer__col--brand {
  padding-right: 24px;
}

.footer__logo {
  height: 52px;
  margin-bottom: 18px;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.footer__slogan {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 500;
  font-size: 1.02rem;
  color: var(--color-gold-light);
  margin-bottom: 24px;
  line-height: 1.5;
}

.footer__cta {
  box-shadow: none;
}

.footer__heading {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__list a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.95rem;
  transition: color var(--transition), padding-left var(--transition);
}

.footer__list a:hover,
.footer__list a:focus-visible {
  color: var(--color-gold-light);
  padding-left: 4px;
}

.footer__list--contact li {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.95rem;
  line-height: 1.5;
}

.footer__rule {
  height: 1px;
  background: rgba(255, 255, 255, 0.14);
  margin-bottom: 24px;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer__back-top {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gold-light);
  transition: color var(--transition);
  white-space: nowrap;
}

.footer__back-top:hover,
.footer__back-top:focus-visible {
  color: var(--color-white);
}

/* ================= WHATSAPP FLOAT ================= */

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 58px;
  height: 58px;
  background-color: #25d366;
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  z-index: 1500;
  transition: background-color var(--transition), transform var(--transition);
  animation: pulse 2.6s ease infinite;
}

.whatsapp-float:hover,
.whatsapp-float:focus-visible {
  background-color: #1ebe57;
  transform: scale(1.06);
  animation-play-state: paused;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25), 0 0 0 0 rgba(37, 211, 102, 0.5); }
  50% { box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25), 0 0 0 10px rgba(37, 211, 102, 0); }
}

.whatsapp-float__icon {
  width: 30px;
  height: 30px;
}

/* ================= SCROLL REVEAL ================= */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

@media (max-height: 700px) {
  .hero {
    padding: 120px 0 96px;
  }

  .hero__actions {
    margin-bottom: 36px;
  }

  .hero__scroll-cue {
    bottom: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .whatsapp-float,
  .hero__scroll-cue span {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ================= FOCUS STATES ================= */

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

/* ================= RESPONSIVE ================= */

@media (max-width: 900px) {
  .cards-grid,
  .cards-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    text-align: center;
  }

  .hero__text {
    max-width: 100%;
    margin: 0 auto;
  }

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

  .hero__desc {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__facts {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 18px;
  }

  .hero__scroll-cue {
    display: none;
  }

  .section__bg {
    background-attachment: scroll;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 40px;
  }

  .footer__col--brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }
}

@media (max-width: 720px) {
  .card--wide {
    flex-direction: column;
    gap: 20px;
  }

  .card__wide-head {
    flex: none;
    padding-right: 0;
    padding-bottom: 20px;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .card__list--grid {
    column-count: 1;
  }

  .header__logo {
    height: 48px;
  }

  .nav {
    position: fixed;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .nav.is-open {
    max-height: 400px;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .nav__list li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link {
    display: block;
    padding: 14px 0;
  }

  .header__cta {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .hero {
    padding: 128px 0 64px;
  }

  .section,
  .section--band {
    padding: 72px 0;
  }

  .footer {
    padding: 56px 0 24px;
    text-align: center;
  }

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

  .footer__col--brand {
    grid-column: auto;
  }

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

  .footer__list {
    align-items: center;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .cards-grid,
  .cards-grid--4 {
    grid-template-columns: 1fr;
  }

  .contato-info {
    padding: 30px 24px;
  }
}