/* ==========================================================================
   DEVPONTES — PORTFÓLIO PROFISSIONAL
   Estrutura do arquivo:
   1. Reset & Variáveis
   2. Tipografia & Utilitários
   3. Layout base / Container
   4. Navbar
   5. Menu Mobile
   6. Hero
   7. Botões
   8. Seção Sobre
   9. Timeline (Experiência)
   10. Skills (Habilidades)
   11. Projetos
   12. Formação
   13. Contato
   14. Footer
   15. Botão Voltar ao Topo
   16. Animações
   17. Responsividade
   ========================================================================== */

/* ==========================================================================
   1. RESET & VARIÁVEIS
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Paleta principal */
  --color-bg: #121214;
  --color-bg-elevated: #18181b;
  --color-bg-card: #1b1b1e;
  --color-border: #2e2e2e;
  --color-border-soft: rgba(255, 255, 255, 0.08);
  --color-white: #ffffff;
  --color-text: #ffffff;
  --color-text-muted: #a3a3a8;
  --color-text-faint: #6b6b70;
  --color-orange: #f58605;
  --color-orange-soft: rgba(245, 134, 5, 0.12);
  --color-accent-2: #d6336c;

  /* Gradientes */
  --gradient-brand: linear-gradient(135deg, var(--color-orange), var(--color-accent-2));
  --gradient-glow: radial-gradient(circle, rgba(245, 134, 5, 0.35), transparent 70%);

  /* Tipografia */
  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Espaçamentos */
  --section-padding: 140px;
  --container-width: 1240px;

  /* Efeitos */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-glow: 0 0 80px rgba(245, 134, 5, 0.15);
  --transition-base: 0.3s cubic-bezier(0.65, 0, 0.35, 1);
  --transition-fast: 0.18s ease;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: blur(20px);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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;
  color: inherit;
}

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

/* Foco visível para acessibilidade de teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--color-orange);
  color: var(--color-bg);
}

/* Respeita usuários que preferem menos movimento */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   2. TIPOGRAFIA & UTILITÁRIOS
   ========================================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-orange);
  font-weight: 500;
  margin-bottom: 16px;
}

.eyebrow::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-orange), transparent);
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 18px;
}

.section-subtitle {
  color: var(--color-text-muted);
  max-width: 620px;
  font-size: 1.02rem;
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 32px;
}

section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-head {
  margin-bottom: 64px;
}

.section-head.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-head.center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* linha divisória sutil entre seções */
.divider-line {
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, transparent, var(--color-border) 50%, transparent);
}

/* ==========================================================================
   4. NAVBAR
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 22px 0;
  transition: var(--transition-base);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  padding: 14px 0;
  background: rgba(18, 18, 20, 0.75);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border-soft);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__logo {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand__name span {
  color: var(--color-orange);
}

.brand__tagline {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--color-text-faint);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding-bottom: 6px;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-orange);
  transition: width var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
}

.nav-links a.active::after,
.nav-links a:hover::after {
  width: 100%;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.btn-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  z-index: 1100;
}

.btn-menu-toggle span {
  height: 2px;
  width: 100%;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition-base);
}

.btn-menu-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.btn-menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.btn-menu-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   5. MENU MOBILE
   ========================================================================== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(18, 18, 20, 0.98);
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: var(--transition-base);
}

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

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-white);
}

.mobile-menu a:hover {
  color: var(--color-orange);
}

.mobile-menu .btn {
  margin-top: 12px;
}

/* ==========================================================================
   6. HERO
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: var(--gradient-glow);
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}

.hero__pattern {
  position: absolute;
  top: 50%;
  right: -8%;
  transform: translateY(-50%);
  width: 46%;
  max-width: 720px;
  opacity: 0.9;
  z-index: 0;
  animation: floatSlow 12s ease-in-out infinite;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__greeting {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.hero__name {
  font-size: clamp(3.4rem, 8vw, 6rem);
  line-height: 0.95;
  margin-bottom: 6px;
}

.hero__role {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  font-weight: 600;
  margin-bottom: 24px;
}

.hero__role .accent {
  color: var(--color-orange);
}

.hero__desc {
  color: var(--color-text-muted);
  max-width: 520px;
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

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

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--glass-bg);
  transition: var(--transition-fast);
  font-size: 1.1rem;
}

.social-icon:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
  transform: translateY(-3px);
}

/* Cartão-assinatura do herói: terminal glassmórfico com "resposta de API" */
.hero__visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.terminal-card {
  width: 100%;
  max-width: 460px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow), 0 24px 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  animation: floatCard 6s ease-in-out infinite;
}

.terminal-card__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.02);
}

.terminal-card__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.terminal-card__dot:nth-child(1) { background: #ff5f57; }
.terminal-card__dot:nth-child(2) { background: #febc2e; }
.terminal-card__dot:nth-child(3) { background: #28c840; }

.terminal-card__title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-faint);
}

.terminal-card__body {
  padding: 24px 22px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--color-text-muted);
}

.terminal-card__body .k { color: #a882ff; }
.terminal-card__body .s { color: #8fd67a; }
.terminal-card__body .n { color: #f58605; }
.terminal-card__body .c { color: var(--color-text-faint); }

.terminal-card__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--glass-border);
}

.terminal-card__stat {
  padding: 18px;
  text-align: center;
  border-right: 1px solid var(--glass-border);
}

.terminal-card__stat:last-child {
  border-right: none;
}

.terminal-card__stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-white);
}

.terminal-card__stat span {
  font-size: 0.68rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero__scroll-cue {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 1;
}

.hero__scroll-cue ion-icon {
  animation: bounceDown 1.8s ease-in-out infinite;
}

/* ==========================================================================
   7. BOTÕES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: var(--transition-base);
  white-space: nowrap;
}

.btn ion-icon {
  font-size: 1.1rem;
}

.btn-primary {
  background: var(--gradient-brand);
  color: var(--color-white);
  box-shadow: 0 8px 24px rgba(245, 134, 5, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(245, 134, 5, 0.4);
}

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

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

.btn-sm {
  padding: 10px 18px;
  font-size: 0.82rem;
}

/* ==========================================================================
   8. SEÇÃO SOBRE
   ========================================================================== */
.about {
  background: var(--color-bg-elevated);
}

.about__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
}

.about__desc {
  color: var(--color-text-muted);
  margin: 22px 0 32px;
  font-size: 1.02rem;
}

.about__signature {
  font-family: 'Sora', cursive;
  font-style: italic;
  color: var(--color-orange);
  font-size: 1.6rem;
  position: relative;
  display: inline-block;
  padding-bottom: 10px;
}

.about__signature::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 70%;
  height: 1px;
  background: var(--color-orange);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition-base);
}

.feature-card:hover {
  border-color: rgba(245, 134, 5, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--color-orange-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  color: var(--color-orange);
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   9. TIMELINE (EXPERIÊNCIA)
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--color-orange), var(--color-border) 80%);
}

.timeline-item {
  position: relative;
  padding-bottom: 52px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -40px;
  top: 4px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-orange);
}

.timeline-item.current::before {
  background: var(--color-orange);
  box-shadow: 0 0 0 5px var(--color-orange-soft);
}

.timeline-item__period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-orange);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  display: inline-block;
}

.timeline-item__card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 30px;
}

.timeline-item__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.timeline-item__header h3 {
  font-size: 1.15rem;
}

.timeline-item__company {
  font-size: 0.85rem;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

.timeline-item__badge {
  font-size: 0.68rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--color-orange-soft);
  color: var(--color-orange);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.timeline-item__desc {
  color: var(--color-text-muted);
  font-size: 0.94rem;
  margin: 12px 0 16px;
}

.timeline-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

/* ==========================================================================
   10. SKILLS (HABILIDADES)
   ========================================================================== */
.skills-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-group {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
}

.skill-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  margin-bottom: 22px;
  color: var(--color-white);
}

.skill-group__title ion-icon {
  color: var(--color-orange);
  font-size: 1.3rem;
}

.skill-bar {
  margin-bottom: 18px;
}

.skill-bar:last-child {
  margin-bottom: 0;
}

.skill-bar__label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: var(--color-text-muted);
}

.skill-bar__track {
  height: 6px;
  border-radius: 999px;
  background: var(--color-border);
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  border-radius: 999px;
  background: var(--gradient-brand);
  width: 0;
  transition: width 1.2s cubic-bezier(0.65, 0, 0.35, 1);
}

.skill-tags-title {
  margin: 56px 0 24px;
  text-align: center;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.skill-tags .tag {
  padding: 8px 16px;
  font-size: 0.8rem;
}

/* ==========================================================================
   11. PROJETOS
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 134, 5, 0.4);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.project-card__top {
  padding: 30px 26px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.project-card__icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--color-orange-soft);
  color: var(--color-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.project-card__link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.project-card__link:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.project-card__body {
  padding: 20px 26px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card__body h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.project-card__body p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ==========================================================================
   12. FORMAÇÃO
   ========================================================================== */
.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.education-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  gap: 20px;
}

.education-card__icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-sm);
  background: var(--color-orange-soft);
  color: var(--color-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.education-card__period {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-orange);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
  display: block;
}

.education-card h3 {
  font-size: 1.02rem;
  margin-bottom: 6px;
}

.education-card p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

/* ==========================================================================
   13. CONTATO
   ========================================================================== */
.contact__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}

.contact-info__item {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-orange);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info__item h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.contact-info__item p {
  font-size: 0.98rem;
}

.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-orange);
  outline: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.form-error {
  font-size: 0.76rem;
  color: #ff6b6b;
  margin-top: 6px;
  min-height: 16px;
}

.form-status {
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--color-orange);
  min-height: 20px;
}

/* ==========================================================================
   14. FOOTER
   ========================================================================== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 56px 0 28px;
  background: var(--color-bg-elevated);
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
}

.footer__brand p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  max-width: 300px;
  margin-top: 14px;
}

.footer__cols {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}

.footer__col h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  margin-bottom: 18px;
  font-family: var(--font-mono);
}

.footer__col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--color-orange);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-faint);
}

.footer__socials {
  display: flex;
  gap: 12px;
}

/* ==========================================================================
   15. BOTÃO VOLTAR AO TOPO
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 8px 24px rgba(245, 134, 5, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: var(--transition-base);
  z-index: 900;
}

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

.back-to-top:hover {
  transform: translateY(-4px);
}

/* ==========================================================================
   16. ANIMAÇÕES
   ========================================================================== */
@keyframes floatSlow {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50% { transform: translateY(-52%) translateX(-14px); }
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(6px); opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ==========================================================================
   17. RESPONSIVIDADE
   ========================================================================== */
@media (max-width: 1080px) {
  :root {
    --section-padding: 100px;
  }

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

  .hero__visual {
    order: -1;
    margin-bottom: 20px;
  }

  .hero__pattern {
    display: none;
  }

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

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

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

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

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }

  .btn-menu-toggle {
    display: flex;
  }

  .navbar__actions .btn-primary.btn-sm {
    display: none;
  }

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

  .skills-groups {
    grid-template-columns: 1fr;
  }

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

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

  .footer__top {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .container {
    padding: 0 20px;
  }

  .hero {
    padding-top: 100px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .contact-form {
    padding: 26px;
  }

  .back-to-top {
    right: 18px;
    bottom: 18px;
  }
}