/* ==========================================================================
   Samuel C. Couto — Portfólio
   Sistema visual: preto/branco/cinza, tipografia sans + mono,
   linguagem de "interface de sistema" (PowerShell / Windows Server).
   ========================================================================== */

/* ---- Tokens --------------------------------------------------------- */
:root {
  --black: #000000;
  --bg: #0a0a0a;
  --bg-raised: #121212;
  --ink: #ededed;
  --steel: #8f8f8f;
  --graphite: #242424;
  --graphite-strong: #454545;
  --white: #ffffff;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Cascadia Mono", "Segoe UI Mono", "SF Mono", "Roboto Mono", Consolas, "Courier New", monospace;

  --container-w: 1120px;

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --space-8: 6rem;

  --dur: 200ms;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---- Reset / base ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, p, dl, dd { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* ---- Acessibilidade ---------------------------------------------------- */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -60px;
  background: var(--white);
  color: var(--black);
  padding: .6rem 1rem;
  z-index: 200;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: .85rem;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: var(--space-3); }

:focus-visible {
  outline: 1.5px solid var(--white);
  outline-offset: 3px;
}

::selection { background: var(--white); color: var(--black); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--graphite-strong); border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--steel); }
html { scrollbar-width: thin; scrollbar-color: var(--graphite-strong) var(--bg); }

/* ---- Barra de progresso de leitura -------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--white);
  z-index: 300;
  transition: width 80ms linear;
}

/* ---- Status dot (indicador reutilizável) -------------------------------- */
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink);
  display: inline-block;
  position: relative;
  flex-shrink: 0;
}
.status-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--ink);
  opacity: 0;
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { opacity: .5; transform: scale(.6); }
  100% { opacity: 0; transform: scale(1.7); }
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  border: 1px solid var(--graphite-strong);
  padding: .2rem .55rem;
  color: var(--ink);
}

/* ---- Efeito "bracket" (viewfinder) ao passar o mouse -------------------- */
.bracket { position: relative; }
.bracket::before,
.bracket::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  opacity: 0;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  pointer-events: none;
}
.bracket::before {
  top: -1px; left: -1px;
  border-top: 1.5px solid var(--white);
  border-left: 1.5px solid var(--white);
  transform: translate(5px, 5px);
}
.bracket::after {
  bottom: -1px; right: -1px;
  border-bottom: 1.5px solid var(--white);
  border-right: 1.5px solid var(--white);
  transform: translate(-5px, -5px);
}
.bracket:hover::before, .bracket:focus-visible::before,
.bracket:hover::after, .bracket:focus-visible::after {
  opacity: 1;
  transform: translate(0, 0);
}

/* ---- Header -------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(10, 10, 10, .85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--graphite);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--space-4);
}
.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: .9375rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: .01em;
  flex-shrink: 0;
}
.logo-dot { color: var(--steel); }

.site-nav { display: flex; gap: var(--space-5); }
.site-nav a {
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--steel);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .45em;
  position: relative;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease);
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: -3px;
  height: 1px;
  background: var(--white);
  transition: right var(--dur) var(--ease);
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--ink); }
.site-nav a:hover::after, .site-nav a:focus-visible::after { right: 0; }

.header-status {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--steel);
  white-space: nowrap;
}

/* ---- Hero ------------------------------------------------------------- */
.hero {
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: var(--space-7) 0 var(--space-6);
}
.hero-inner { max-width: 760px; }

.hero-prompt {
  font-family: var(--font-mono);
  font-size: .9375rem;
  color: var(--steel);
  margin-bottom: var(--space-5);
}
.prompt-cmd { color: var(--ink); }
.cursor-blink {
  display: inline-block;
  color: var(--white);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2.75rem, 7vw, 5rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin-bottom: var(--space-4);
  color: var(--white);
}
.hero-role {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(1.125rem, 2.4vw, 1.5rem);
  color: var(--ink);
  margin-bottom: var(--space-3);
  max-width: 42ch;
  line-height: 1.35;
}
.hero-focus {
  font-size: 1rem;
  color: var(--steel);
  margin-bottom: var(--space-6);
  max-width: 46ch;
  line-height: 1.6;
}
.hero-actions { margin-bottom: var(--space-5); }
.hero-hint {
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--steel);
}
.hero-hint kbd {
  font-family: var(--font-mono);
  border: 1px solid var(--graphite-strong);
  border-bottom-width: 2px;
  padding: .05em .5em;
  border-radius: 3px;
  color: var(--ink);
  font-size: .9em;
}

.scroll-cue {
  position: absolute;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .55rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--steel);
  font-family: var(--font-mono);
  transition: color var(--dur) var(--ease);
}
.scroll-cue:hover, .scroll-cue:focus-visible { color: var(--ink); }
.scroll-cue-text { font-size: .6875rem; letter-spacing: .2em; }
.scroll-cue-line {
  width: 1px; height: 28px;
  background: var(--graphite-strong);
  position: relative;
  overflow: hidden;
}
.scroll-cue-line::after {
  content: '';
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--white);
  animation: scrollline 1.8s ease-in-out infinite;
}
@keyframes scrollline {
  0% { top: -100%; }
  60% { top: 100%; }
  100% { top: 100%; }
}

/* ---- Botões ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-sans);
  font-size: .9375rem;
  font-weight: 600;
  padding: .85rem 1.6rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn-primary { background: var(--white); color: var(--black); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--steel); border-color: var(--steel); }

/* ---- Seções (estrutura compartilhada) ----------------------------------- */
.section { padding: var(--space-8) 0; border-top: 1px solid var(--graphite); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--graphite);
}
.section-path { font-family: var(--font-mono); font-size: .8125rem; color: var(--steel); }
.section-head h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.375rem, 2.6vw, 1.75rem);
  font-weight: 700;
  color: var(--white);
}

/* ---- Sobre -------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-6);
  align-items: start;
}
.about-bio { font-size: 1.0625rem; line-height: 1.75; color: var(--ink); max-width: 60ch; }
.about-bio strong { color: var(--white); font-weight: 600; }

.info-panel { border: 1px solid var(--graphite); padding: var(--space-4); }
.info-panel-title { font-family: var(--font-mono); font-size: .75rem; color: var(--steel); margin-bottom: var(--space-3); }
.info-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: var(--space-3);
  padding: .65rem 0;
  border-bottom: 1px solid var(--graphite);
  font-family: var(--font-mono);
  font-size: .8125rem;
}
.info-row:last-child { border-bottom: none; padding-bottom: 0; }
.info-row dt { color: var(--steel); text-transform: uppercase; letter-spacing: .05em; }
.info-row dd { color: var(--ink); display: flex; align-items: center; gap: .5rem; }

/* ---- Sobre (Atualização da Bio) ----------------------------------------- */
.about-highlights {
  margin-top: var(--space-3);
  list-style: none;
}
.about-highlights li {
  font-size: .9375rem;
  color: var(--steel);
  margin-bottom: .75rem;
  padding-left: 1rem;
  position: relative;
}
.about-highlights li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--white);
  font-family: var(--font-mono);
}
.about-highlights strong {
  color: var(--white);
}

/* ---- Marquee (Letreiro Dinâmico) ---------------------------------------- */
.tech-marquee {
  width: 100%;
  overflow: hidden;
  background: var(--graphite);
  border-top: 1px solid var(--graphite-strong);
  border-bottom: 1px solid var(--graphite-strong);
  padding: .75rem 0;
  margin: var(--space-6) 0 0 0;
}
.marquee-track {
  display: inline-flex;
  white-space: nowrap;
  animation: scroll-left 25s linear infinite;
}
.marquee-track span {
  font-family: var(--font-mono);
  font-size: .875rem;
  font-weight: 600;
  color: var(--steel);
  letter-spacing: .1em;
}
.marquee-track .separator {
  color: var(--graphite-strong);
  margin: 0 1.5rem;
}
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---- Novo Stack Técnico (Grid Interativa) ------------------------------- */
.stack-showcase {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.stack-title {
  font-family: var(--font-mono);
  font-size: .875rem;
  color: var(--white);
  margin-bottom: var(--space-4);
  letter-spacing: .05em;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.tech-tag {
  background: var(--bg-raised);
  border: 1px solid var(--graphite);
  border-radius: 4px; /* Leve arredondamento para lembrar a Imagem 2 */
  padding: .85rem 1rem;
  display: flex;
  align-items: center;
  gap: .75rem;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.tech-tag svg {
  width: 18px;
  height: 18px;
  color: var(--steel);
  flex-shrink: 0;
  transition: color var(--dur) var(--ease);
}
.tech-tag span {
  font-family: var(--font-sans);
  font-size: .9375rem;
  font-weight: 500;
  color: var(--ink);
}

/* Interação ao passar o mouse */
.tech-tag:hover {
  border-color: var(--steel);
  background: var(--graphite);
}
.tech-tag:hover svg {
  color: var(--white);
}

/* Ajuste Responsivo do Grid */
@media (max-width: 640px) {
  .tech-grid {
    grid-template-columns: 1fr 1fr; /* Duas colunas no mobile */
    gap: .75rem;
  }
  .tech-tag {
    padding: .75rem;
  }
  .tech-tag span {
    font-size: .875rem;
  }
  /* Estiliza e centraliza o Uptime no mobile abaixo do menu */
  .header-status {
    width: 100%;
    justify-content: center;
    margin-top: 0.25rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--graphite-strong);
  }
}

/* ---- Linha do tempo -------------------------------------------------------- */
.timeline-entry {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 0 var(--space-6);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--steel);
  padding-top: .3rem;
  white-space: nowrap;
}
.timeline-content {
  border-left: 1px solid var(--graphite);
  padding: 0 0 var(--space-7) var(--space-5);
  position: relative;
}
.timeline-entry:last-child .timeline-content { padding-bottom: 0; }
.timeline-content::before {
  content: '';
  position: absolute;
  left: -5px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--graphite-strong);
}
.timeline-entry.is-current .timeline-content::before {
  background: var(--white);
  border-color: var(--white);
}
.timeline-heading { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; margin-bottom: .3rem; }
.timeline-heading h3 { font-family: var(--font-sans); font-size: 1.125rem; font-weight: 700; color: var(--white); }
.timeline-company { font-family: var(--font-mono); font-size: .8125rem; color: var(--steel); margin-bottom: .6rem; }
.timeline-content p { font-size: .9375rem; line-height: 1.65; color: var(--ink); max-width: 60ch; }

/* ---- Contato -------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* Alterado para 2 colunas */
  gap: 1px;
  background: var(--graphite);
  border: 1px solid var(--graphite);
}
.contact-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.contact-icon {
  width: 18px;
  height: 18px;
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}
.contact-card:hover .contact-icon, 
.contact-card:focus-visible .contact-icon {
  color: var(--white);
}
.contact-card {
  background: var(--bg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: .6rem;
  text-decoration: none;
  color: inherit;
  transition: background var(--dur) var(--ease);
}
.contact-card:hover, .contact-card:focus-visible { background: var(--bg-raised); }
.contact-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--steel);
}
.contact-value {
  font-size: 1.0625rem;
  color: var(--ink);
  word-break: break-word;
}
.contact-value::after {
  content: '↗';
  margin-left: .4em;
  display: inline-block;
  opacity: 0;
  transform: translate(-4px, 2px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.contact-card:hover .contact-value::after,
.contact-card:focus-visible .contact-value::after { opacity: 1; transform: translate(0, 0); }

/* ---- Rodapé -------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--graphite); padding: var(--space-5) 0; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--steel);
}
.back-to-top { text-decoration: none; color: var(--steel); transition: color var(--dur) var(--ease); }
.back-to-top:hover, .back-to-top:focus-visible { color: var(--ink); }

/* ---- Terminal: botão flutuante ------------------------------------------- */
.terminal-fab {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 50;
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-raised);
  border: 1px solid var(--graphite-strong);
  color: var(--ink);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.terminal-fab:hover, .terminal-fab:focus-visible {
  border-color: var(--white);
  transform: translateY(-3px);
}

/* ---- Terminal: overlay e janela ------------------------------------------ */
.terminal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, .7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
}
.terminal-overlay[hidden] { display: none; }

.terminal-window {
  width: 100%;
  max-width: 680px;
  height: min(520px, 80vh);
  background: #000;
  border: 1px solid var(--graphite-strong);
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
}
.terminal-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem 1rem;
  border-bottom: 1px solid var(--graphite);
  font-size: .75rem;
  color: var(--steel);
}
.terminal-close {
  background: none;
  border: none;
  color: var(--steel);
  cursor: pointer;
  font-size: .9rem;
  line-height: 1;
  padding: .2rem .4rem;
}
.terminal-close:hover, .terminal-close:focus-visible { color: var(--ink); }

.terminal-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  font-size: .8125rem;
  line-height: 1.65;
  color: var(--ink);
}
.tline { margin: 0 0 .2rem; white-space: pre-wrap; word-break: break-word; }
.tline-echo { color: var(--white); }
.tline-echo::before { content: 'PS> '; color: var(--steel); }
.tline-dim { color: var(--steel); }
.tline-heading { color: var(--white); font-weight: 600; margin-top: .5rem; }

.terminal-inputrow {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1rem;
  border-top: 1px solid var(--graphite);
}
.terminal-prompt { color: var(--white); font-size: .8125rem; }
.terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .8125rem;
  caret-color: var(--white);
}

/* ---- Botão Secundário (Download) ---- */
.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: var(--graphite-strong);
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--graphite);
  border-color: var(--steel);
}

/* ---- Seção de Projetos ---- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}
.project-card {
  background: var(--bg-raised);
  border: 1px solid var(--graphite);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.project-card:hover {
  border-color: var(--steel);
  background: var(--graphite);
}
.project-head {
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--graphite-strong);
}
.project-date {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--steel);
  display: block;
  margin-bottom: .5rem;
}
.project-title {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
}
.project-desc {
  font-size: .9375rem;
  line-height: 1.65;
  color: var(--ink);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

/* Responsividade dos Projetos */
@media (max-width: 900px) {
  .project-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* ---- Responsivo ----------------------------------------------------------- */
@media (max-width: 900px) {
  :root { --space-8: 4rem; --space-7: 3rem; }
  .about-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .timeline-entry { grid-template-columns: 1fr; }
  .timeline-date { padding-top: 0; margin-bottom: .3rem; }
}

@media (max-width: 640px) {
  /* Ajusta o cabeçalho para empilhar o logo e o menu */
  .header-inner { 
    flex-direction: column; 
    justify-content: center;
    height: auto;
    padding: 1rem 0;
    gap: .5rem;
  }
  
  /* Ajusta os links para caberem na tela */
  .site-nav { 
    gap: 1rem; 
    flex-wrap: wrap; 
    justify-content: center;
  }
  
  .site-nav a {
    font-size: .75rem; /* Fonte ligeiramente menor para mobile */
  }

  .hero { min-height: 82vh; }
  .container { padding: 0 var(--space-4); }
  .terminal-overlay { padding: 0; }
  .terminal-window { max-width: 100%; height: 100%; border: none; }
}

/* ---- Movimento reduzido ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Animações de Scroll (Reveal via JS) ---- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* Criando um atraso (stagger) para listas como os cards de projetos e contatos */
.project-card.reveal, .contact-card.reveal, .tech-tag.reveal {
  transition-duration: 0.5s;
}
.project-card:nth-child(2) { transition-delay: 100ms; }
.project-card:nth-child(3) { transition-delay: 200ms; }
.project-card:nth-child(4) { transition-delay: 300ms; }

.contact-card:nth-child(2) { transition-delay: 100ms; }
.contact-card:nth-child(3) { transition-delay: 200ms; }
.contact-card:nth-child(4) { transition-delay: 300ms; }