/* =========================================================
   Manoel Martins Jr — Professional Portfolio
   Modern, responsive, security-themed dark UI
   ========================================================= */

:root{
  --bg: #0a0e14;
  --bg-alt: #0d1219;
  --surface: #111826;
  --surface-border: #1e2a3d;
  --text: #e6edf3;
  --text-muted: #8b98a9;
  --accent: #00d1a0;
  --accent-soft: rgba(0, 209, 160, 0.12);
  --accent-2: #4da6ff;
  --danger: #ff5c5c;
  --radius: 10px;
  --max-width: 1080px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a{ color: var(--accent-2); text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link{
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #001410;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus{ left: 0; }

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--surface-border);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo{
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo:hover{ text-decoration: none; }
.logo-bracket{ color: var(--accent); }
.logo-accent{ color: var(--accent-2); }

.primary-nav ul{
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.primary-nav a{
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}
.primary-nav a:hover{ color: var(--text); text-decoration: none; }

.nav-cta{
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  padding: 6px 14px;
  border-radius: 6px;
}
.nav-cta:hover{ background: var(--accent-soft); }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--surface-border);
  border-radius: 6px;
  cursor: pointer;
}
.nav-toggle span{
  display: block;
  height: 2px;
  width: 20px;
  margin: 0 auto;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity: 0; }
.nav-toggle.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  padding: 120px 0 96px;
  overflow: hidden;
  border-bottom: 1px solid var(--surface-border);
}

.hero-grid{
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--surface-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--surface-border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at top, black, transparent 70%);
  opacity: 0.35;
}

.hero-inner{ position: relative; }

.hero-title{
  font-size: clamp(2rem, 5vw, 3.4rem);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
  padding-top: 8px;
}

.hero-role{
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--accent-2);
  margin: 0 0 20px;
  min-height: 1.6em;
}
.cursor{ animation: blink 1s step-end infinite; color: var(--accent); }
@keyframes blink{ 50%{ opacity: 0; } }

.hero-lead{
  max-width: 640px;
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.hero-actions{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn{
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.15s ease;
}
.btn:hover{ text-decoration: none; }
.btn-primary{ background: var(--accent); color: #001410; }
.btn-primary:hover{ background: #00e8b3; transform: translateY(-1px); }
.btn-outline{ border: 1px solid var(--surface-border); color: var(--text); }
.btn-outline:hover{ border-color: var(--accent-2); color: var(--accent-2); }

.hero-meta{
  list-style: none;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- Sections ---------- */
.section{ padding: 88px 0; }
.section-alt{ background: var(--bg-alt); }

.section-title{
  font-size: 1.6rem;
  margin: 0 0 48px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.section-index{
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.1rem;
}

/* ---------- Timeline ---------- */
.timeline{
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  border-left: 2px solid var(--surface-border);
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.timeline-item{ position: relative; }

.timeline-marker{
  position: absolute;
  left: -35px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.timeline-card{
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 24px 28px;
}

.timeline-head{
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.timeline-head h3{ margin: 0; font-size: 1.15rem; }

.timeline-badge{
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #001410;
  background: var(--accent);
  padding: 3px 10px;
  border-radius: 999px;
}

.timeline-org{
  margin: 6px 0 2px;
  font-weight: 600;
  color: var(--text);
}
.timeline-date{
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.timeline-desc{
  margin: 0 0 16px;
  color: var(--text-muted);
}

.tag-list{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}
.tag-list li{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 6px;
}

/* ---------- Skills ---------- */
.skills-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}
.skill-card{
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 24px;
}
.skill-card h3{
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--accent-2);
}

/* ---------- Certifications ---------- */
.cert-source{
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: -32px 0 32px;
}
.cert-source a{ color: var(--text-muted); text-decoration: underline; }
.cert-source a:hover{ color: var(--accent-2); }

.cert-tablist{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--surface-border);
  margin-bottom: 32px;
}

.cert-tab{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 6px;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.cert-tab + .cert-tab{ margin-left: 8px; }
.cert-tab:hover{ color: var(--text); }
.cert-tab.is-active{
  color: var(--text);
  border-bottom-color: var(--accent);
}
.cert-tab:focus-visible{
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

.cert-count{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  padding: 1px 8px;
}
.cert-tab.is-active .cert-count{
  color: var(--accent);
  border-color: var(--accent);
}

.cert-panel[hidden]{ display: none; }

/* ---- Featured badge images ---- */
.badge-grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.badge-card{
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 20px 14px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.badge-card:hover{
  border-color: var(--accent);
  transform: translateY(-2px);
}
.badge-card img{
  width: 92px;
  height: 92px;
  object-fit: contain;
  background: #ffffff;
  border-radius: 12px;
  padding: 8px;
  box-sizing: border-box;
}
.badge-name{
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.cert-status.is-expired{
  color: var(--text-muted);
  opacity: 0.75;
}

.cert-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.cert-list li{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--surface-border);
  transition: background 0.15s ease;
}
.cert-list li:last-child{ border-bottom: none; }
.cert-list li:hover{ background: var(--bg-alt); }

.cert-name{ font-size: 0.95rem; color: var(--text); }

.cert-status{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}
.cert-status.is-active{
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 10px;
  border-radius: 999px;
}

/* ---- Vendor badges (tab accent dots) ---- */
.vendor-badge{
  display: inline-block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
}
.vendor-badge--cisco{ background: #049fd9; }
.vendor-badge--fortinet{ background: #ee3124; }
.vendor-badge--lpi{ background: #f7b500; }
.vendor-badge--redhat{ background: #ee0000; }
.vendor-badge--microsoft{
  background:
    linear-gradient(to bottom right, #f25022 49%, transparent 50%) top left / 50% 50% no-repeat,
    linear-gradient(to bottom left, #7fba00 49%, transparent 50%) top right / 50% 50% no-repeat,
    linear-gradient(to top right, #00a4ef 49%, transparent 50%) bottom left / 50% 50% no-repeat,
    linear-gradient(to top left, #ffb900 49%, transparent 50%) bottom right / 50% 50% no-repeat;
  border-radius: 3px;
}

/* ---------- Contact ---------- */
.contact-inner{ text-align: center; }
.contact-lead{
  max-width: 560px;
  margin: 0 auto 32px;
  color: var(--text-muted);
}
.contact-links{
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.contact-link{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
}
.contact-link:hover{
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ---------- Footer ---------- */
.site-footer{
  border-top: 1px solid var(--surface-border);
  padding: 28px 0;
}
.footer-inner{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.back-to-top{ color: var(--text-muted); }
.back-to-top:hover{ color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 780px){
  .nav-toggle{ display: flex; }

  .primary-nav{
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--surface-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .primary-nav.is-open{ max-height: 320px; }
  .primary-nav ul{
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
  }
  .primary-nav li{ border-bottom: 1px solid var(--surface-border); }
  .primary-nav a{ display: block; padding: 14px 0; }
  .nav-cta{ display: inline-block; margin-top: 12px; text-align: center; }

  .hero{ padding: 96px 0 64px; }
  .section{ padding: 64px 0; }

  .cert-list li{ flex-direction: column; align-items: flex-start; gap: 6px; }
  .cert-source{ margin-top: -20px; }
  .badge-grid{ grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
  .badge-card img{ width: 72px; height: 72px; padding: 6px; }
}

@media (max-width: 480px){
  .hero-actions{ flex-direction: column; }
  .btn{ text-align: center; }
  .timeline{ padding-left: 20px; }
  .timeline-marker{ left: -27px; }
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .cursor{ animation: none; }
}