/* ============================================================
   PORTFÓLIO — DARK THEME
   Author: Kevin Mendes
   ============================================================ */

/* ==================== VARIÁVEIS ==================== */
:root {
  --bg-primary:    #0a0a0f;
  --bg-secondary:  #0f0f1a;
  --bg-card:       #13131f;
  --bg-card-hover: #1a1a2e;
  --border:        rgba(0, 212, 255, 0.12);
  --border-hover:  rgba(0, 212, 255, 0.4);

  --accent:        #00d4ff;
  --accent-dim:    rgba(0, 212, 255, 0.15);
  --accent-glow:   0 0 20px rgba(0, 212, 255, 0.35);
  --accent2:       #7c3aed;
  --accent2-dim:   rgba(124, 58, 237, 0.15);

  --text-primary:  #e8e8f0;
  --text-secondary:#9090b0;
  --text-muted:    #5a5a7a;

  --nav-height:    70px;
  --section-gap:   100px;
  --radius:        12px;
  --radius-lg:     20px;

  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --font-main: 'Inter', system-ui, sans-serif;
  --font-code: 'Fira Code', 'Courier New', monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul { list-style: none; }

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

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #00b8e0; }

/* ==================== SELEÇÃO ==================== */
::selection { background: var(--accent-dim); color: var(--accent); }

/* ==================== CURSOR PERSONALIZADO ==================== */
.cursor {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s, width 0.2s, height 0.2s, background 0.2s;
  mix-blend-mode: difference;
}

.cursor-follower {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.12s ease-out, width 0.3s, height 0.3s, opacity 0.3s;
  opacity: 0.5;
}

.cursor.cursor--hover { width: 18px; height: 18px; }
.cursor-follower.cursor--hover { width: 54px; height: 54px; opacity: 0.25; }

@media (pointer: coarse) {
  .cursor, .cursor-follower { display: none; }
}

/* ==================== UTILITÁRIOS ==================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.section {
  padding: var(--section-gap) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
}

.section-subtitle {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ==================== BOTÕES ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.06);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--accent);
  color: #000;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  background: #00b8e0;
  box-shadow: 0 6px 28px rgba(0, 212, 255, 0.5);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

.btn-outline:hover {
  background: var(--accent-dim);
  box-shadow: var(--accent-glow);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

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

/* ==================== SCROLL REVEAL ==================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Delays para filhos */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }
.reveal:nth-child(6) { transition-delay: 0.5s; }

/* ==================== NAVBAR ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-code);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition);
}

.nav-logo:hover { color: var(--accent); }

.logo-bracket {
  color: var(--accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: width var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 20px;
}

.nav-cta {
  background: var(--accent-dim);
  border: 1px solid var(--border);
  color: var(--accent) !important;
  padding: 8px 18px;
}

.nav-cta:hover {
  background: var(--accent);
  color: #000 !important;
  border-color: var(--accent);
}

.nav-cta::after { display: none; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==================== HERO ==================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--nav-height) 24px 0;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-greeting {
  font-family: var(--font-code);
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.hero-name {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-primary) 0%, #a0a0c0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-name .accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-typewriter {
  font-family: var(--font-code);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  margin-bottom: 28px;
  min-height: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.typewriter-prefix { color: var(--accent); }

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--accent);
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-socials {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.social-link svg { width: 20px; height: 20px; }

.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-3px);
  box-shadow: var(--accent-glow);
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: fadeInUp 1s ease 2s both;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollWheel 1.5s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%, 100% { transform: translateY(0); opacity: 1; }
  60% { transform: translateY(10px); opacity: 0; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ==================== SOBRE ==================== */
.about {
  background: var(--bg-secondary);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  align-items: center;
}

.about-image-wrapper {
  display: flex;
  justify-content: center;
}

.about-image-frame {
  position: relative;
  width: 280px;
  height: 320px;
}

.about-image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-hover) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  overflow: hidden;
}

.about-image-placeholder svg {
  width: 100px;
  height: 100px;
  opacity: 0.3;
}

.about-image-decoration {
  position: absolute;
  inset: -10px;
  border-radius: var(--radius-lg);
  border: 2px solid var(--accent);
  opacity: 0.3;
  transform: rotate(3deg);
  pointer-events: none;
}

.about-image-frame::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 30px;
  background: var(--accent);
  filter: blur(28px);
  opacity: 0.25;
  border-radius: 50%;
}

.about-subtitle {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  line-height: 1.4;
}

.about-text {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.98rem;
}

.about-text strong { color: var(--accent); }

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 28px 0;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.detail-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.detail-icon { font-size: 1rem; flex-shrink: 0; }
.detail-item strong { color: var(--text-primary); }

/* ==================== HABILIDADES ==================== */
.skills {
  background: var(--bg-primary);
}

.skills-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 48px;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.skill-category:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.06);
}

.skill-category-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-icon { font-size: 1.2rem; }

.skill-bar-item { margin-bottom: 18px; }
.skill-bar-item:last-child { margin-bottom: 0; }

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.87rem;
  color: var(--text-secondary);
}

.skill-percent { color: var(--accent); font-family: var(--font-code); font-weight: 500; }

.skill-bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.skill-bar-fill::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
}

/* Tech Tags */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tech-tag {
  padding: 7px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.83rem;
  font-family: var(--font-code);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.tech-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

/* ==================== TIMELINE (EXPERIÊNCIA & FORMAÇÃO) ==================== */
.experience { background: var(--bg-secondary); }
.education { background: var(--bg-primary); }

.experience::before, .education::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.experience, .education { position: relative; }

.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent2) 100%);
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  padding-left: 48px;
  margin-bottom: 48px;
}

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

.timeline-dot {
  position: absolute;
  left: -6px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 2px solid var(--bg-secondary);
  box-shadow: 0 0 12px var(--accent);
  transition: transform var(--transition);
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.4);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.timeline-item:hover .timeline-content {
  border-color: var(--border-hover);
  box-shadow: 0 4px 24px rgba(0, 212, 255, 0.06);
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.timeline-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-badge {
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.timeline-badge.current {
  background: rgba(0, 212, 255, 0.15);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.timeline-company {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}

.timeline-date {
  font-size: 0.83rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}

.timeline-list {
  list-style: none;
  margin-bottom: 16px;
}

.timeline-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.timeline-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

.timeline-tags span {
  padding: 4px 12px;
  background: var(--accent2-dim);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  color: #a78bfa;
}

/* Certificações */
.certifications { display: flex; flex-direction: column; gap: 12px; }

.cert-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cert-badge {
  padding: 4px 10px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-code);
  letter-spacing: 0.05em;
  min-width: 52px;
  text-align: center;
  flex-shrink: 0;
}

/* ==================== PROJETOS ==================== */
.projects { background: var(--bg-secondary); position: relative; }

.projects::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.filter-btn {
  padding: 9px 22px;
  border-radius: 100px;
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: all var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.1);
  transform: translateY(-6px);
}

.project-card.hidden {
  display: none;
}

.project-card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.project-image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--bg-card-hover) 0%, #1a1a35 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: transform var(--transition-slow);
}

.project-card:hover .project-image-placeholder {
  transform: scale(1.05);
}

.project-image-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.4;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-overlay { opacity: 1; }

.project-overlay-btn {
  padding: 9px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--accent);
  color: #000;
  transition: all var(--transition);
}

.project-overlay-btn:hover { background: #00b8e0; transform: scale(1.05); }

.project-overlay-btn--outline {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
}

.project-overlay-btn--outline:hover {
  background: var(--accent-dim);
  transform: scale(1.05);
}

.project-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.project-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.project-links {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.project-links a {
  color: var(--text-muted);
  transition: color var(--transition);
}

.project-links a svg { width: 18px; height: 18px; }
.project-links a:hover { color: var(--accent); }

.project-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.project-tags span {
  padding: 4px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  font-family: var(--font-code);
}

/* ==================== CONTATO ==================== */
.contact {
  background: var(--bg-primary);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent2), transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: start;
}

.contact-info-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.contact-info-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact-links { display: flex; flex-direction: column; gap: 16px; }

.contact-link-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-link-item:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: translateX(4px);
}

.contact-link-icon {
  width: 42px;
  height: 42px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-link-icon svg { width: 20px; height: 20px; }

.contact-link-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-link-value {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Formulário */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.92rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-status {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.88rem;
  display: none;
  text-align: center;
}

.form-status.success {
  display: block;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--accent);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* ==================== FOOTER ==================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 280px;
  line-height: 1.7;
}

.footer-brand .nav-logo {
  font-size: 1.3rem;
}

.footer-links h4,
.footer-social h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 18px;
  font-weight: 600;
}

.footer-links ul { display: flex; flex-direction: column; gap: 10px; }

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--accent); }

.footer-social-icons {
  display: flex;
  gap: 12px;
}

.footer-social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.footer-social-icons a svg { width: 18px; height: 18px; }

.footer-social-icons a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==================== BACK TO TOP ==================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
  transform: translateY(80px);
  opacity: 0;
  transition: all var(--transition);
  z-index: 900;
}

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

.back-to-top:hover {
  background: #00b8e0;
  transform: translateY(-3px);
  box-shadow: 0 6px 28px rgba(0, 212, 255, 0.55);
}

.back-to-top svg { width: 20px; height: 20px; }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .skills-categories { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image-wrapper { display: none; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
    --section-gap: 70px;
  }

  /* Navbar mobile */
  .hamburger { display: flex; }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px;
    font-size: 1rem;
  }

  .nav-cta { margin-top: 8px; }

  /* Hero */
  .hero-buttons { gap: 12px; }
  .hero-buttons .btn { flex: 1; justify-content: center; min-width: 140px; }

  /* Habilidades */
  .skills-categories { grid-template-columns: 1fr; }

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

  /* About details */
  .about-details { grid-template-columns: 1fr; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

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

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn { width: 100%; max-width: 300px; }
  .contact-form { padding: 24px; }
}

/* ==================== ANIMAÇÕES ESPECIAIS ==================== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(0, 212, 255, 0.4); }
  50% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.8); }
}

.timeline-dot { animation: pulse-glow 2.5s ease-in-out infinite; }

/* Gradient animated border on card hover */
.project-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent), var(--accent2), var(--accent));
  background-size: 200% 200%;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
  z-index: -1;
}

.project-card { position: relative; }

.project-card:hover::before {
  opacity: 0.5;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}