/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.35rem;
  border-radius: var(--r);
  font-size: 0.83rem;
  font-weight: 600;
  font-family: var(--sans);
  cursor: pointer;
  border: none;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--cyan);
  color: #000;
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}

.btn-ghost:hover {
  border-color: var(--border-light);
  color: var(--text);
  background: var(--card);
}

/* ─── HERO TAGS ─── */
.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  padding: 0.28rem 0.65rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  letter-spacing: 0.04em;
  background: var(--card);
  transition: all 0.2s;
  cursor: default;
}

.tag:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
}

/* ─── TERMINAL ─── */
.terminal {
  background: var(--card);
  border: 1px solid var(--border-light);
  border-radius: var(--r-lg);
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.78rem;
  box-shadow: 0 0 80px rgba(0, 212, 255, 0.05), 0 4px 40px rgba(0, 0, 0, 0.5);
}

.terminal-bar {
  background: var(--surface);
  padding: 0.7rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  border-bottom: 1px solid var(--border);
}

.t-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.t-dot-r {
  background: #ff5f57;
}

.t-dot-y {
  background: #febc2e;
}

.t-dot-g {
  background: #28c840;
}

.terminal-bar-title {
  margin-left: auto;
  margin-right: auto;
  font-size: 0.68rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

.terminal-body {
  padding: 1.5rem;
  min-height: 240px;
  contain: layout;
}

.t-line {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.45rem;
  opacity: 0;
  transform: translateY(3px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.t-line.show {
  opacity: 1;
  transform: translateY(0);
}

.t-prompt {
  color: var(--green);
  flex-shrink: 0;
}

.t-cmd {
  color: var(--text);
}

.t-out {
  color: var(--text-muted);
  padding-left: 1.4rem;
  line-height: 1.7;
}

.t-ok {
  color: var(--green);
}

.t-cyan {
  color: var(--cyan);
}

.t-purple {
  color: var(--purple);
}

.t-amber {
  color: var(--amber);
}

.t-cursor {
  display: inline-block;
  width: 7px;
  height: 13px;
  background: var(--cyan);
  vertical-align: middle;
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}

/* ─── FILTER BUTTONS ─── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-btn {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-light);
  background: var(--card);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--border-light);
  color: var(--text);
}

.filter-btn.active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #000;
  font-weight: 700;
}

/* ─── BENCHMARKS ─── */
.bench-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--r-lg);
  background: var(--card);
}

.bench-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.bench-table th,
.bench-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
}

.bench-table th {
  font-family: var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-size: 0.62rem;
}

.bench-table td {
  color: var(--text-muted);
}

.bench-table tbody tr:last-child td {
  border-bottom: none;
}

.bench-highlight {
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.07), rgba(139, 92, 246, 0.04));
}

.bench-insight {
  margin-top: 1rem;
  display: grid;
  gap: 0.45rem;
}

.bench-insight p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.badge-presales {
  background: rgba(245, 158, 11, 0.12);
  color: var(--amber);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

/* ─── PROJECT CARDS ─── */
button.project-head {
  display: block;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
  padding: 1.4rem;
  /* explicit — overrides browser default */
  -webkit-tap-highlight-color: transparent;
}

button.project-head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s;
  cursor: pointer;
}

.project-card:hover {
  border-color: var(--border-light);
  background: var(--card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.45);
}

.project-card.open {
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.15), 0 8px 40px rgba(0, 212, 255, 0.06);
  transform: translateY(-2px);
}

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

.project-head {
  padding: 1.4rem;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

.badge {
  font-family: var(--mono);
  font-size: 0.62rem;
  padding: 0.22rem 0.6rem;
  border-radius: var(--r-sm);
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.badge-llm {
  background: var(--purple-dim);
  color: var(--purple);
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-vision {
  background: var(--cyan-dim);
  color: var(--cyan);
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.badge-mlops {
  background: var(--green-dim);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-infra {
  background: var(--amber-dim);
  color: var(--amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-govern {
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid rgba(248, 113, 113, 0.3);
}

.badge-orch {
  background: var(--cyan-dim);
  color: var(--cyan);
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.badge-iot {
  background: var(--green-dim);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-nlp {
  background: var(--purple-dim);
  color: var(--purple);
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.card-toggle {
  color: var(--text-faint);
  font-size: 0.9rem;
  transition: transform 0.25s, color 0.2s;
  line-height: 1;
}

.project-card.open .card-toggle {
  transform: rotate(180deg);
  color: var(--cyan);
}

.project-name {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.project-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* expandable breakdown */
.project-body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: max-height 0.42s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.26s ease, transform 0.26s ease;
}

.project-card.open .project-body {
  max-height: 1200px;
  opacity: 1;
  transform: translateY(0);
}

.project-body-inner {
  padding: 1.2rem 1.4rem 1.4rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bd-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.4rem;
}

.bd-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.65;
  overflow-wrap: break-word;
}

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

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.chip {
  font-family: var(--mono);
  font-size: 0.63rem;
  padding: 0.18rem 0.5rem;
  border-radius: var(--r-sm);
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
  letter-spacing: 0.03em;
}

.bd-code {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--cyan);
  background: var(--cyan-dim);
  padding: 0.15rem 0.4rem;
  border-radius: var(--r-sm);
  word-break: break-all;
  white-space: normal;
}

/* ─── ARCHITECTURE FLOW ─── */
.arch-flow {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.arch-node {
  flex: 1;
  min-width: 0;
  padding: 1.4rem 1rem;
  border-radius: var(--r);
  border: 1.5px solid;
  background: var(--card);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.3rem;
}

.arch-node-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.arch-node-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.arch-node-sub {
  font-family: var(--mono);
  font-size: 0.63rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.1rem;
}

/* Color themes per node */
.arch-node--telecom {
  border-color: rgba(139, 92, 246, 0.55);
}

.arch-node--telecom .arch-node-label {
  color: var(--purple);
}

.arch-node--ml {
  border-color: rgba(0, 212, 255, 0.55);
}

.arch-node--ml .arch-node-label {
  color: var(--cyan);
}

.arch-node--data {
  border-color: rgba(16, 185, 129, 0.55);
}

.arch-node--data .arch-node-label {
  color: var(--green);
}

.arch-node--govern {
  border-color: rgba(248, 113, 113, 0.55);
}

.arch-node--govern .arch-node-label {
  color: var(--red);
}

/* Arrow connectors */
.arch-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.65rem;
  flex-shrink: 0;
  color: var(--text-faint);
  font-size: 1rem;
  transition: color 0.2s;
}

/* Footer label */
.arch-footer {
  text-align: center;
  margin-top: 1.25rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-faint);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Mobile: vertical stack */
@media (max-width: 700px) {
  .arch-flow {
    flex-direction: column;
    align-items: stretch;
  }

  .arch-connector {
    padding: 0.35rem 0;
    /* rotate → to ↓ */
    transform: rotate(90deg);
  }

  .arch-node {
    flex: none;
    width: 100%;
    padding: 1.1rem;
  }

  .arch-node-title {
    font-size: 0.88rem;
  }

  .arch-node-sub {
    font-size: 0.62rem;
  }
}

/* ─── STACK GROUPS ─── */
.stack-group {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.25rem;
  transition: border-color 0.2s, transform 0.2s;
}

.stack-group:hover {
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.stack-group-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.8rem;
}

.stack-items {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.stack-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.stack-group:hover .stack-item {
  color: var(--text-muted);
}

.stack-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-light);
  flex-shrink: 0;
  transition: background 0.2s;
}

.stack-group:hover .stack-dot {
  background: var(--cyan);
}

/* ─── TIMELINE ─── */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--border) 60%, transparent 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.75rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.25rem;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
  transform: translateX(0.5px);
}

.timeline-date {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  letter-spacing: 0.06em;
  margin-bottom: 0.3rem;
  overflow-wrap: break-word;
}

.timeline-role {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
  letter-spacing: -0.01em;
}

.timeline-company {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--cyan);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.timeline-list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
  padding-left: 1rem;
  position: relative;
}

.timeline-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.timeline-list li strong {
  color: var(--text);
}

/* ─── ACADEMIC CARDS ─── */
.academic-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.academic-card:hover {
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.academic-card.featured {
  border-color: rgba(139, 92, 246, 0.35);
  background: linear-gradient(140deg, var(--card) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.ac-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.icon-purple {
  background: var(--purple-dim);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.icon-cyan {
  background: var(--cyan-dim);
  border: 1px solid rgba(0, 212, 255, 0.25);
}

.icon-green {
  background: var(--green-dim);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.icon-amber {
  background: var(--amber-dim);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.ac-title {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

.ac-institution {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--purple);
  letter-spacing: 0.06em;
  margin-bottom: 0.7rem;
}

.ac-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ─── CONTACT ─── */
#contact {
  text-align: center;
}

.contact-card {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border-light);
  border-radius: var(--r-xl);
  padding: 3rem 4rem;
  max-width: 520px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.contact-title {
  font-size: 1.55rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  letter-spacing: -0.025em;
}

.contact-sub {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.65;
}

.contact-links {
  display: flex;
  gap: 0.65rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── FOCUS VISIBLE (teclado e acessibilidade) ─── */
.filter-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ─── TOUCH DEVICES: desabilita hover animations ─── */
@media (hover: none) {
  .project-card:hover {
    transform: none;
    box-shadow: none;
  }

  .stack-group:hover {
    transform: none;
  }

  .academic-card:hover {
    transform: none;
  }

  .btn-primary:hover {
    transform: none;
    box-shadow: none;
  }

  .tag:hover {
    border-color: var(--border-light);
    color: var(--text-muted);
    background: var(--card);
  }
}

/* ─── MOBILE: 480px ─── */
@media (max-width: 480px) {
  .contact-card {
    padding: 2rem 1.25rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .hero-name {
    font-size: 2.2rem;
  }

  /* terminal menor no mobile */
  .terminal-body {
    padding: 1rem;
    min-height: 180px;
  }

  .t-out {
    padding-left: 0.6rem;
    font-size: 0.72rem;
  }

  .t-prompt,
  .t-cmd {
    font-size: 0.72rem;
  }

  /* project cards sem hover lift */
  .project-card:hover {
    transform: none;
  }

  button.project-head {
    padding: 1.1rem;
  }

  .project-body-inner {
    padding: 1rem 1.1rem;
  }

  /* stack group padding */
  .stack-group {
    padding: 1rem;
  }

  /* contact */
  .contact-title {
    font-size: 1.3rem;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

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

  /* timeline mais apertada */
  .timeline {
    padding-left: 1.5rem;
  }

  .timeline-item::before {
    left: -1.75rem;
  }

  /* filter buttons menores */
  .filter-btn {
    font-size: 0.62rem;
    padding: 0.28rem 0.65rem;
  }

  /* ac-institution pode quebrar linha */
  .ac-institution {
    white-space: normal;
  }

  /* chips menores */
  .chip {
    font-size: 0.6rem;
  }
}

/* ─── MOBILE: 360px (telas muito pequenas) ─── */
@media (max-width: 360px) {
  .hero-name {
    font-size: 2rem;
  }

  button.project-head {
    padding: 0.9rem 1rem;
  }

  .project-body-inner {
    padding: 0.9rem 1rem;
  }

  .hero-cta .btn {
    font-size: 0.78rem;
    padding: 0.55rem 1rem;
  }

  .badge {
    font-size: 0.58rem;
  }

  .project-name {
    font-size: 0.95rem;
  }

  .stack-group {
    padding: 0.85rem;
  }

  .terminal-body {
    padding: 0.75rem;
  }
}