/* =========================================================
   STUDIO FIT — Landing Page
   Paleta: preto esverdeado (fundo) + branco (texto) + verde
   sinal (destaque). Elemento de assinatura: a linha de
   "batimento cardíaco" usada como divisor/underline.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --color-void: #0a0e0c;
  --color-void-2: #0e1310;
  --color-card: #131a15;
  --color-card-2: #17201a;
  --color-ink: #f4f7f1;
  --color-ink-dim: #a9b6a9;
  --color-signal: #c8ff4d;
  --color-signal-dim: #9fe032;
  --color-line: rgba(244, 247, 241, 0.1);

  --font-display: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 76px;

  --container-w: 1180px;
}

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

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

body {
  background: var(--color-void);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

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

input,
textarea {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: 24px;
}

.grid {
  display: grid;
  gap: 28px;
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-signal);
  margin-bottom: 12px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s var(--ease), color 0.25s var(--ease),
    border-color 0.25s var(--ease);
  white-space: nowrap;
}

.btn--signal {
  background: var(--color-signal);
  color: #0a0e0c;
}

.btn--signal:hover {
  background: var(--color-signal-dim);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -10px rgba(200, 255, 77, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

.btn--ghost:hover {
  border-color: var(--color-signal);
  color: var(--color-signal);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

.btn--outline:hover {
  border-color: var(--color-signal);
  color: var(--color-signal);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.85rem;
}

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

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(10, 14, 12, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.header.is-scrolled {
  background: rgba(10, 14, 12, 0.92);
  border-bottom-color: var(--color-line);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.logo__accent {
  color: var(--color-signal);
}

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

.nav__link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-ink-dim);
  position: relative;
  padding-bottom: 4px;
  transition: color 0.25s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-signal);
  transition: width 0.25s var(--ease);
}

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

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

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

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

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

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

@media (max-width: 860px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-void-2);
    border-bottom: 1px solid var(--color-line);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease);
  }

  .nav.is-open {
    max-height: 320px;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
  }

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

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

  .header__actions .btn--sm {
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + 64px);
  padding-bottom: 80px;
  overflow: hidden;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 60% 20%, #000 40%, transparent 90%);
  opacity: 0.5;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero__title {
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  font-weight: 700;
  margin-bottom: 22px;
}

.highlight {
  position: relative;
  color: var(--color-signal);
  display: inline-block;
}

.pulse-underline {
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 14px;
  fill: none;
  stroke: var(--color-signal);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 260;
  stroke-dashoffset: 260;
  transition: stroke-dashoffset 1.1s var(--ease) 0.3s;
}

.reveal.is-visible .pulse-underline {
  stroke-dashoffset: 0;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--color-ink-dim);
  max-width: 46ch;
  margin-bottom: 32px;
}

.hero__cta {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero__stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-ink);
}

.hero__stat-label {
  font-size: 0.82rem;
  color: var(--color-ink-dim);
}

.hero__media {
  position: relative;
}

.hero__media-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 88% 100%, 0 100%);
  border: 1px solid var(--color-line);
}

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

.hero__badge {
  position: absolute;
  left: -20px;
  bottom: 24px;
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
}

.hero__badge-number {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-signal);
}

.hero__badge-label {
  font-size: 0.78rem;
  color: var(--color-ink-dim);
  line-height: 1.3;
  margin-top: 2px;
}

.pulse-divider {
  display: block;
  width: 100%;
  height: 40px;
  margin-top: 40px;
  fill: none;
  stroke: var(--color-line);
  stroke-width: 2;
}

@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__media {
    order: -1;
    max-width: 380px;
    margin-inline: auto;
  }

  .hero__badge {
    left: 12px;
  }
}

/* ---------- Sections ---------- */
.section {
  padding: 100px 0;
}

.section--alt {
  background: var(--color-void-2);
}

.section__head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section__head--left {
  text-align: left;
  margin: 0 0 32px;
}

.section__title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.section__text {
  color: var(--color-ink-dim);
  font-size: 1rem;
}

/* ---------- Cards (base) ---------- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease), background 0.35s var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(200, 255, 77, 0.35);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.55);
  background: var(--color-card-2);
}

/* Feature cards */
.card--feature .card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(200, 255, 77, 0.1);
  color: var(--color-signal);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: transform 0.35s var(--ease);
}

.card--feature .card__icon svg {
  width: 26px;
  height: 26px;
}

.card--feature:hover .card__icon {
  transform: scale(1.08) rotate(-6deg);
}

.card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card__text {
  color: var(--color-ink-dim);
  font-size: 0.94rem;
}

/* Plan cards */
.card--plan {
  display: flex;
  flex-direction: column;
  position: relative;
}

.card--highlight {
  border-color: var(--color-signal);
  background: linear-gradient(180deg, rgba(200, 255, 77, 0.08), var(--color-card) 40%);
}

.card__tag {
  position: absolute;
  top: -14px;
  left: 30px;
  background: var(--color-signal);
  color: #0a0e0c;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 999px;
}

.card__plan-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.card__plan-desc {
  color: var(--color-ink-dim);
  font-size: 0.9rem;
  margin-bottom: 20px;
  min-height: 40px;
}

.card__price {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.card__price-currency {
  font-size: 1.1rem;
  font-weight: 600;
  vertical-align: super;
  margin-right: 2px;
}

.card__price-period {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-ink-dim);
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex: 1;
}

.card__list li {
  font-size: 0.92rem;
  color: var(--color-ink-dim);
  padding-left: 26px;
  position: relative;
}

.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 12px;
  height: 6px;
  border-left: 2px solid var(--color-signal);
  border-bottom: 2px solid var(--color-signal);
  transform: rotate(-45deg);
}

/* Testimonial cards */
.card__quote {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 26px;
  color: var(--color-ink);
}

.card__quote::before {
  content: "\201C";
  color: var(--color-signal);
  font-family: var(--font-display);
  font-size: 1rem;
}

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

.card__author img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-signal);
}

.card__author-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.card__author-role {
  font-size: 0.82rem;
  color: var(--color-ink-dim);
}

/* ---------- Contact ---------- */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

@media (max-width: 900px) {
  .contact__inner {
    grid-template-columns: 1fr;
  }
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 28px;
}

.contact__info li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.94rem;
  color: var(--color-ink-dim);
}

.contact__info svg {
  width: 20px;
  height: 20px;
  color: var(--color-signal);
  flex-shrink: 0;
}

.form {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form__group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-dim);
}

.form__group input,
.form__group textarea {
  background: var(--color-void-2);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--color-ink);
  resize: vertical;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: rgba(169, 182, 169, 0.6);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--color-signal);
  box-shadow: 0 0 0 3px rgba(200, 255, 77, 0.15);
}

.form__group.has-error input,
.form__group.has-error textarea {
  border-color: #ff6b6b;
}

.form__error {
  font-size: 0.78rem;
  color: #ff6b6b;
  min-height: 1em;
}

.form__feedback {
  font-size: 0.9rem;
  text-align: center;
  min-height: 1.2em;
  color: var(--color-signal);
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-line);
  padding: 40px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer__social {
  display: flex;
  gap: 14px;
}

.footer__social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-dim);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.footer__social a:hover {
  color: var(--color-signal);
  border-color: var(--color-signal);
  transform: translateY(-3px);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--color-ink-dim);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Stagger children inside grids */
.grid .reveal:nth-child(2) {
  transition-delay: 0.08s;
}

.grid .reveal:nth-child(3) {
  transition-delay: 0.16s;
}

/* ---------- Responsive tuning ---------- */
@media (max-width: 480px) {
  .section {
    padding: 72px 0;
  }

  .hero {
    padding-top: calc(var(--header-h) + 40px);
    padding-bottom: 56px;
  }

  .hero__cta {
    flex-direction: column;
  }

  .card {
    padding: 28px 22px;
  }

  .form {
    padding: 26px;
  }
}