/* ============================================================
   PORTFÓLIO — style.css
   Tema: Minimalista Clean — Branco / Cinza / Preto
   Fonte: Syne (display) + DM Mono (mono) + Inter (body)
   Animações: suaves, lentas, elegantes
   ============================================================ */

/* ============================================================
   1. VARIÁVEIS CSS
   ============================================================ */
:root {
  --bg-primary:     #f8f8f6;
  --bg-secondary:   #f0f0ed;
  --bg-card:        #ffffff;
  --bg-card-hover:  #f5f5f3;
  --border:         #e2e2de;
  --border-focus:   #1a1a1a;

  --text-primary:   #111110;
  --text-secondary: #6b6b68;
  --text-muted:     #a8a8a4;

  --accent:         #1a1a1a;
  --accent-2:       #4a4a48;
  --accent-glow:    rgba(26,26,26,0.06);
  --gradient:       linear-gradient(135deg, #1a1a1a 0%, #4a4a48 100%);

  --max-width:      1160px;
  --section-gap:    120px;
  --card-radius:    12px;
  --radius-sm:      6px;

  --font-display:   'Syne', sans-serif;
  --font-mono:      'DM Mono', monospace;
  --font-body:      'Inter', sans-serif;

  --shadow-sm:      0 1px 4px rgba(0,0,0,0.06);
  --shadow-md:      0 4px 24px rgba(0,0,0,0.08);
  --shadow-card:    0 2px 12px rgba(0,0,0,0.07);

  --transition:     0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow:0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================================
   2. RESET E BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; font-family: inherit; }

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

/* ============================================================
   3. TIPOGRAFIA
   ============================================================ */
.gradient-text { color: var(--text-primary); }

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

.section     { padding: var(--section-gap) 0; }
.section-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header { margin-bottom: 60px; }

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-subtitle {
  margin-top: 14px;
  color: var(--text-secondary);
  font-size: 0.97rem;
  max-width: 480px;
  line-height: 1.75;
}

/* ============================================================
   5. BOTÕES
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}
.btn-primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--text-primary);
  background: var(--accent-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(0,0,0,0.04);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.btn-icon {
  padding: 10px;
  width: 42px;
  height: 42px;
  justify-content: center;
  background: transparent;
  border-color: var(--border);
  border-radius: var(--radius-sm);
}
.btn-icon:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-sm   { padding: 7px 14px; font-size: 0.8rem; }
.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   6. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(248,248,246,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: opacity var(--transition);
}
.nav-logo:hover { opacity: 0.45; }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(0,0,0,0.05);
}

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

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 4px; }
.hamburger span {
  display: block; width: 20px; height: 1.5px;
  background: var(--text-primary); border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 32px 80px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0,0,0,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
}

.hero-glow {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px; background: var(--border); pointer-events: none;
}

.hero-content {
  position: relative; z-index: 1;
  pointer-events: auto;
  max-width: var(--max-width); width: 100%; margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #22c55e;
  animation: pulse-dot 3s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.8vw, 1.05rem);
  color: var(--text-secondary);
  margin-bottom: 28px;
  min-height: 1.8em;
  letter-spacing: 0.02em;
}
.cursor { animation: blink 1.2s infinite; color: var(--text-muted); }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-tagline {
  font-size: clamp(0.97rem, 1.8vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 44px;
  line-height: 1.85;
}
.hero-tagline strong { color: var(--text-primary); font-weight: 500; }

.hero-buttons {
  display: flex; flex-wrap: wrap;
  align-items: center; gap: 10px; margin-bottom: 64px;
}

.hero-stats {
  display: flex; align-items: center; gap: 36px;
  padding-top: 40px; border-top: 1px solid var(--border);
}
.stat { text-align: left; }
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem; font-weight: 800;
  color: var(--text-primary);
  line-height: 1; letter-spacing: -0.03em;
}
.stat-label {
  font-size: 0.7rem; color: var(--text-muted);
  letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px;
}
.stat-divider { width: 1px; height: 32px; background: var(--border); }

.scroll-indicator {
  position: absolute; bottom: 40px; right: 32px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-muted); font-family: var(--font-mono);
  font-size: 0.62rem; letter-spacing: 0.15em; text-transform: uppercase;
  writing-mode: vertical-rl;
  animation: float-v 4s ease-in-out infinite;
}
.scroll-line { width: 1px; height: 48px; background: linear-gradient(to bottom, var(--text-muted), transparent); }
@keyframes float-v { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* ============================================================
   8. SOBRE MIM
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 260px 1fr; gap: 80px; align-items: start; }

.avatar-wrapper { position: relative; width: 220px; margin: 0 auto; }
.avatar-placeholder {
  width: 220px; height: 220px;
  border-radius: var(--card-radius);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px; color: var(--text-muted); font-size: 0.78rem; overflow: hidden;
}
.avatar-placeholder img { width: 100%; height: 100%; object-fit: cover; }
.avatar-ring { display: none; }
.avatar-badge-float {
  position: absolute; bottom: -12px; right: -12px;
  font-size: 1.2rem;
  background: var(--bg-card); border-radius: var(--radius-sm);
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}

.about-intro { font-size: 1.1rem; font-weight: 500; margin-bottom: 18px; line-height: 1.65; }
.about-text p { color: var(--text-secondary); margin-bottom: 14px; line-height: 1.85; font-size: 0.96rem; }

.about-highlights { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.highlight-item {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.8rem; color: var(--text-secondary);
  background: var(--bg-secondary); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 100px;
}

/* ============================================================
   9. HABILIDADES
   ============================================================ */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }

.skill-category {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--card-radius); padding: 26px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.skill-category:hover {
  border-color: var(--text-primary);
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.skill-category-title {
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500;
  color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.category-icon { color: var(--text-primary); font-style: normal; }

.skill-items { display: flex; flex-wrap: wrap; gap: 7px; }

.skill-item {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 12px;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.8rem; font-weight: 500;
  color: var(--text-secondary); transition: all var(--transition);
}
.skill-item:hover {
  color: var(--text-primary); border-color: var(--text-primary);
  background: var(--bg-card); transform: translateY(-2px); box-shadow: var(--shadow-sm);
}
.skill-item i { font-size: 1.1rem; }
.skill-item .devicon-github-original,
.skill-item .devicon-flask-original { color: var(--text-secondary); }

/* ============================================================
   10. PROJETOS
   ============================================================ */
.project-filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 36px; }
.filter-btn {
  font-family: var(--font-mono); font-size: 0.72rem;
  padding: 5px 16px; border-radius: 100px;
  background: transparent; border: 1px solid var(--border);
  color: var(--text-muted); transition: all var(--transition); letter-spacing: 0.04em;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--text-primary); border-color: var(--text-primary); color: var(--bg-primary);
}

.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }

.project-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--card-radius); padding: 26px;
  display: flex; flex-direction: column; gap: 12px;
  transition: all var(--transition); position: relative;
}
.project-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.project-card.hidden { display: none; }

.project-header { display: flex; justify-content: space-between; align-items: flex-start; }
.project-icon { font-size: 1.5rem; filter: grayscale(1) opacity(0.55); }
.project-links-top { display: flex; gap: 10px; }
.project-links-top a { color: var(--text-muted); transition: color var(--transition); }
.project-links-top a:hover { color: var(--text-primary); }

.project-name {
  font-family: var(--font-display); font-size: 1rem;
  font-weight: 700; letter-spacing: -0.01em;
}
.project-description { font-size: 0.865rem; color: var(--text-secondary); line-height: 1.75; flex: 1; }

.project-tech { display: flex; flex-wrap: wrap; gap: 5px; }
.project-tech span {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-secondary); background: var(--bg-secondary);
  border: 1px solid var(--border); padding: 3px 9px; border-radius: 100px;
}

.project-buttons { display: flex; gap: 7px; margin-top: auto; }

/* ============================================================
   11. TIMELINE
   ============================================================ */
.timeline { position: relative; padding-left: 28px; max-width: 760px; }
.timeline::before {
  content: ''; position: absolute;
  left: 6px; top: 8px; bottom: 8px;
  width: 1px; background: var(--border);
}

.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute; left: -25px; top: 8px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--text-primary);
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 1px var(--border);
}

.timeline-content {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--card-radius); padding: 22px 26px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.timeline-content:hover { border-color: var(--text-primary); box-shadow: var(--shadow-sm); }

.timeline-header { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 6px; }
.timeline-header h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }
.timeline-badge {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-secondary); background: var(--bg-secondary);
  border: 1px solid var(--border); padding: 3px 10px; border-radius: 100px;
}
.timeline-period { display: block; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); margin-bottom: 12px; }
.timeline-content p { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.8; }

/* ============================================================
   12. CERTIFICAÇÕES
   ============================================================ */
.certs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; }

.cert-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--card-radius); padding: 18px 20px;
  transition: all var(--transition);
}
.cert-card:hover { border-color: var(--text-primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.cert-icon { font-size: 1.4rem; flex-shrink: 0; filter: grayscale(1) opacity(0.5); }
.cert-info { flex: 1; min-width: 0; }
.cert-info h3 { font-family: var(--font-display); font-size: 0.86rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cert-issuer { display: block; font-size: 0.76rem; color: var(--text-secondary); margin-top: 2px; }
.cert-date   { display: block; font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); margin-top: 2px; }
.cert-arrow  { color: var(--text-muted); flex-shrink: 0; transition: all var(--transition); }
.cert-card:hover .cert-arrow { color: var(--text-primary); transform: translate(2px, -2px); }

/* ============================================================
   13. CURRÍCULO
   ============================================================ */
.resume-block {
  display: flex; align-items: center;
  justify-content: space-between; gap: 32px;
  background: var(--text-primary); color: var(--bg-primary);
  border-radius: var(--card-radius); padding: 52px 60px;
}
.resume-block::before { display: none; }

.resume-text h2 {
  font-family: var(--font-display); font-size: 2rem; font-weight: 700;
  letter-spacing: -0.03em; color: var(--bg-primary); margin-bottom: 8px;
}
.resume-text p { color: rgba(248,248,246,0.55); font-size: 0.95rem; }
.resume-buttons { display: flex; gap: 12px; flex-shrink: 0; }

.resume-block .btn-primary {
  background: var(--bg-primary); color: var(--text-primary); border-color: var(--bg-primary);
}
.resume-block .btn-primary:hover { background: rgba(248,248,246,0.88); }
.resume-block .btn-outline { color: var(--bg-primary); border-color: rgba(248,248,246,0.25); }
.resume-block .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: var(--bg-primary); }

/* ============================================================
   14. CONTATO
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.contact-links { display: flex; flex-direction: column; gap: 10px; }

.contact-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--card-radius); padding: 16px 20px;
  transition: all var(--transition);
}
.contact-card:hover { border-color: var(--text-primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.contact-card-icon {
  font-size: 1.2rem; width: 42px; height: 42px;
  background: var(--bg-secondary); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; border: 1px solid var(--border);
}
.contact-card strong { display: block; font-family: var(--font-display); font-size: 0.86rem; font-weight: 600; }
.contact-card span   { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-secondary); }

.contact-form { display: flex; flex-direction: column; gap: 14px; }
.form-group   { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); }
.form-group input,
.form-group textarea {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 14px;
  color: var(--text-primary); font-family: var(--font-body); font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition); resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--text-primary);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.06);
}

.form-feedback { font-family: var(--font-mono); font-size: 0.8rem; text-align: center; padding: 8px; border-radius: var(--radius-sm); display: none; }
.form-feedback.success { display: block; color: #16a34a; background: rgba(22,163,74,0.08); border: 1px solid rgba(22,163,74,0.2); }
.form-feedback.error   { display: block; color: #dc2626; background: rgba(220,38,38,0.06); border: 1px solid rgba(220,38,38,0.15); }

/* ============================================================
   15. FOOTER
   ============================================================ */
.footer { background: var(--text-primary); color: var(--bg-primary); padding: 64px 0 32px; }

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }

.footer .nav-logo { color: var(--bg-primary); }
.footer-brand p { color: rgba(248,248,246,0.45); font-size: 0.875rem; margin-top: 12px; max-width: 260px; line-height: 1.75; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a { color: rgba(248,248,246,0.35); transition: color var(--transition); }
.footer-social a:hover { color: var(--bg-primary); }

.footer-links h4 { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(248,248,246,0.35); margin-bottom: 16px; }
.footer-links ul { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { font-size: 0.875rem; color: rgba(248,248,246,0.55); transition: color var(--transition); }
.footer-links a:hover { color: var(--bg-primary); }

.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid rgba(248,248,246,0.08);
  color: rgba(248,248,246,0.3); font-size: 0.78rem;
}

/* ============================================================
   16. BOTÃO VOLTAR AO TOPO
   ============================================================ */
.back-to-top {
  position: fixed; bottom: 32px; right: 32px;
  width: 42px; height: 42px;
  background: var(--text-primary); color: var(--bg-primary);
  border: none; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); transition: all var(--transition);
  opacity: 0; pointer-events: none; transform: translateY(12px); z-index: 999;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover   { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }

/* ============================================================
   17. ANIMAÇÕES REVEAL — SUAVES E LENTAS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

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

/* ============================================================
   18. RESPONSIVIDADE — TABLET (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  :root { --section-gap: 80px; }

  .nav-links {
    position: fixed; top: 0; left: 0; right: 0; height: 100vh;
    background: rgba(248,248,246,0.98); backdrop-filter: blur(20px);
    flex-direction: column; align-items: center; justify-content: center; gap: 28px;
    transform: translateX(100%); transition: transform var(--transition); z-index: 999;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.4rem; font-weight: 500; }
  .hamburger { display: flex; z-index: 1000; position: relative; }
  .nav-actions .btn-outline { display: none; }

  .hero  { padding: 100px 24px 64px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }

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

  .resume-block { flex-direction: column; padding: 40px 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid  { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* ============================================================
   19. RESPONSIVIDADE — MOBILE (≤ 600px)
   ============================================================ */
@media (max-width: 600px) {
  :root { --section-gap: 64px; }

  .hero      { padding: 96px 20px 56px; }
  .container { padding: 0 20px; }

  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid   { grid-template-columns: 1fr; }
  .certs-grid    { grid-template-columns: 1fr; }
  .footer-grid   { grid-template-columns: 1fr; gap: 24px; }

  .back-to-top { bottom: 20px; right: 20px; }

  .resume-block { padding: 28px 24px; }
  .resume-buttons { flex-direction: column; }
  .resume-buttons .btn { width: 100%; justify-content: center; }

  .scroll-indicator { display: none; }
}

/* ============================================================
   DARK MODE — variáveis sobrescritas via [data-theme="dark"]
   ============================================================ */
[data-theme="dark"] {
  --bg-primary:     #0d0d0d;
  --bg-secondary:   #141414;
  --bg-card:        #1a1a1a;
  --bg-card-hover:  #222222;
  --border:         rgba(255,255,255,0.08);
  --border-focus:   rgba(255,255,255,0.4);

  --text-primary:   #f0f0ec;
  --text-secondary: #888884;
  --text-muted:     #555552;

  --accent:         #f0f0ec;
  --accent-2:       #c0c0bc;
  --accent-glow:    rgba(240,240,236,0.06);
  --gradient:       linear-gradient(135deg, #f0f0ec 0%, #c0c0bc 100%);

  --shadow-sm:      0 1px 4px rgba(0,0,0,0.4);
  --shadow-md:      0 4px 24px rgba(0,0,0,0.5);
  --shadow-card:    0 2px 12px rgba(0,0,0,0.4);
}

/* Inversão do bloco de currículo no dark mode */
[data-theme="dark"] .resume-block {
  background: #f0f0ec;
  color: #111110;
}
[data-theme="dark"] .resume-text h2 { color: #111110; }
[data-theme="dark"] .resume-text p  { color: rgba(17,17,16,0.55); }
[data-theme="dark"] .resume-block .btn-primary {
  background: #111110; color: #f0f0ec; border-color: #111110;
}
[data-theme="dark"] .resume-block .btn-outline {
  color: #111110; border-color: rgba(17,17,16,0.25);
}
[data-theme="dark"] .resume-block .btn-outline:hover {
  background: rgba(17,17,16,0.08);
}

/* Footer no dark mode */
[data-theme="dark"] .footer {
  background: #0d0d0d;
  border-top: 1px solid rgba(255,255,255,0.06);
}
[data-theme="dark"] .footer .nav-logo { color: var(--text-primary); }
[data-theme="dark"] .footer-brand p   { color: rgba(240,240,236,0.4); }
[data-theme="dark"] .footer-social a  { color: rgba(240,240,236,0.3); }
[data-theme="dark"] .footer-social a:hover { color: var(--text-primary); }
[data-theme="dark"] .footer-links h4  { color: rgba(240,240,236,0.3); }
[data-theme="dark"] .footer-links a   { color: rgba(240,240,236,0.5); }
[data-theme="dark"] .footer-links a:hover { color: var(--text-primary); }
[data-theme="dark"] .footer-bottom    { color: rgba(240,240,236,0.25); border-color: rgba(255,255,255,0.05); }

/* Navbar mobile no dark mode */
[data-theme="dark"] .nav-links {
  background: rgba(13,13,13,0.97);
}

/* Navbar scrolled no dark mode */
[data-theme="dark"] .navbar.scrolled {
  background: rgba(13,13,13,0.92);
}

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */
.theme-toggle {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  position: relative;
}
.theme-toggle:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  background: var(--accent-glow);
}

/* Mostra sol no dark, lua no light */
.icon-sun  { display: none; }
.icon-moon { display: block; }

[data-theme="dark"] .icon-sun  { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* Cert overflow fix */
.cert-info { overflow: hidden; }
.cert-date { word-break: break-word; white-space: normal; }