/* ===================================================
   WORDLE HINT — Design Tokens
=================================================== */
:root{
  /* Colors */
  --bg:            #F2F3EE;
  --bg-alt:        #E9EAE3;
  --ink:           #16191C;
  --ink-soft:      #4B5157;
  --line:          #D8D9D0;

  --green:         #1E8E5A;
  --green-deep:    #146B44;
  --amber:         #D9A441;
  --amber-deep:    #B8862C;
  --slate:         #6B7280;
  --indigo:        #303B63;
  --indigo-deep:   #232B49;

  --white:         #FFFFFF;

  /* Type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  /* Spacing */
  --gap-xs: 0.5rem;
  --gap-sm: 1rem;
  --gap-md: 2rem;
  --gap-lg: 4rem;
  --gap-xl: 6rem;

  --radius: 10px;
  --shadow: 0 4px 20px rgba(22,25,28,0.06);
  --shadow-lg: 0 12px 40px rgba(22,25,28,0.10);

  --container: 1240px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font-family:inherit; cursor:pointer; }
input{ font-family:inherit; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--ink);
  line-height:1.15;
  margin:0 0 var(--gap-sm);
  letter-spacing:-0.01em;
}
h1{ font-size:clamp(2.2rem, 5vw, 3.6rem); }
h2{ font-size:clamp(1.6rem, 3.2vw, 2.4rem); }
h3{ font-size:1.25rem; }
p{ margin:0 0 var(--gap-sm); color:var(--ink-soft); }

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

.section{ padding:var(--gap-xl) 0; width:100%; }
.section-alt{ background:var(--bg-alt); }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:0.75rem;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--indigo);
  margin-bottom:var(--gap-sm);
}
.eyebrow .chip{
  width:10px; height:10px; border-radius:2px; background:var(--green);
  display:inline-block;
}

.section-head{
  max-width:680px;
  margin-bottom:var(--gap-lg);
}
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:8px;
  font-weight:600;
  font-size:0.95rem;
  border:2px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
  min-height:48px;
}
.btn-primary{
  background:var(--green);
  color:var(--white);
  box-shadow:var(--shadow);
}
.btn-primary:hover{ background:var(--green-deep); transform:translateY(-2px); }
.btn-outline{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-outline:hover{ background:var(--ink); color:var(--white); }
.btn-block{ width:100%; }

/* ===== Tile motif (signature element) ===== */
.tile{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:56px; height:56px;
  border-radius:6px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.6rem;
  color:var(--white);
  text-transform:uppercase;
  box-shadow:var(--shadow);
}
.tile.correct{ background:var(--green); }
.tile.present{ background:var(--amber); }
.tile.absent{ background:var(--slate); }
.tile.empty{ background:var(--white); color:var(--ink); border:2px solid var(--line); box-shadow:none; }

.tile-row{ display:flex; gap:8px; }

/* ===== Header / Nav ===== */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(242,243,238,0.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  position:relative;
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px;
  max-width:var(--container);
  margin:0 auto;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.25rem;
}
.logo .tile{ width:34px; height:34px; font-size:1rem; border-radius:5px; }
.nav-links{
  display:flex; align-items:center; gap:32px;
  font-weight:500;
  font-size:0.95rem;
}
.nav-links a{ color:var(--ink-soft); transition:color .15s ease; }
.nav-links a:hover{ color:var(--indigo); }
.nav-cta{ display:flex; align-items:center; gap:16px; }
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none; border:none; padding:8px;
}
.nav-toggle span{ width:24px; height:2px; background:var(--ink); border-radius:2px; }

/* ===== Hero ===== */
.hero{
  padding:var(--gap-xl) 0;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:var(--gap-lg);
  align-items:center;
}
.hero-copy p.lead{ font-size:1.15rem; max-width:520px; }
.hero-actions{ display:flex; gap:16px; margin-top:var(--gap-md); flex-wrap:wrap; }
.hero-stats{ display:flex; gap:var(--gap-lg); margin-top:var(--gap-lg); }
.hero-stats .stat b{ display:block; font-family:var(--font-display); font-size:1.6rem; color:var(--indigo); }
.hero-stats .stat span{ font-size:0.85rem; color:var(--ink-soft); }

.hero-visual{
  background:var(--white);
  border-radius:16px;
  padding:var(--gap-lg) var(--gap-md);
  box-shadow:var(--shadow-lg);
  display:flex; flex-direction:column; align-items:center; gap:14px;
}
.hero-visual .tile{ animation:flip 2.4s ease-in-out infinite; }
.hero-visual .tile-row:nth-child(2) .tile{ animation-delay:.12s; }
.hero-visual .tile-row:nth-child(3) .tile{ animation-delay:.24s; }
@keyframes flip{
  0%, 40%{ transform: rotateX(0deg); }
  50%{ transform: rotateX(90deg); }
  60%, 100%{ transform: rotateX(0deg); }
}
.hero-visual .caption{ font-family:var(--font-mono); font-size:0.8rem; color:var(--ink-soft); text-align:center; }

@media (prefers-reduced-motion: reduce){
  .hero-visual .tile{ animation:none; }
}

/* ===== Hint Tool ===== */
.tool-card{
  background:var(--white);
  border-radius:16px;
  box-shadow:var(--shadow-lg);
  padding:var(--gap-lg);
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--gap-lg);
}
.tool-form label{
  display:block;
  font-weight:600;
  font-size:0.9rem;
  margin-bottom:6px;
  color:var(--ink);
}
.tool-form .hint{ font-size:0.8rem; color:var(--ink-soft); margin-bottom:6px; }
.tool-form .field{ margin-bottom:var(--gap-sm); }
.tool-form input[type="text"]{
  width:100%;
  padding:12px 14px;
  border:2px solid var(--line);
  border-radius:8px;
  font-size:1rem;
  letter-spacing:0.15em;
  text-transform:uppercase;
  transition:border-color .15s ease;
}
.tool-form input[type="text"]:focus{ outline:none; border-color:var(--indigo); }
.tool-result{
  background:var(--bg-alt);
  border-radius:12px;
  padding:var(--gap-md);
  display:flex;
  flex-direction:column;
}
.tool-result h4{ font-family:var(--font-mono); font-size:0.85rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--ink-soft); margin-bottom:var(--gap-sm); }
.word-list{ display:flex; flex-wrap:wrap; gap:8px; }
.word-chip{
  font-family:var(--font-mono);
  background:var(--white);
  border:2px solid var(--line);
  padding:6px 12px;
  border-radius:6px;
  font-size:0.95rem;
  letter-spacing:0.05em;
  text-transform:uppercase;
}
.word-empty{ color:var(--ink-soft); font-size:0.9rem; }

/* ===== Steps ===== */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--gap-md);
}
.step-card{
  background:var(--white);
  border-radius:14px;
  padding:var(--gap-md);
  box-shadow:var(--shadow);
}
.step-num{
  font-family:var(--font-mono);
  font-size:0.85rem;
  color:var(--white);
  background:var(--indigo);
  width:32px; height:32px;
  border-radius:6px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:var(--gap-sm);
}

/* ===== Feature / Why cards ===== */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap-md);
}
.feature-card{
  background:var(--white);
  border-radius:14px;
  padding:var(--gap-md);
  border:1px solid var(--line);
}
.feature-card .chip-icon{
  width:44px; height:44px;
  border-radius:8px;
  background:var(--green);
  color:var(--white);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display);
  font-weight:700;
  margin-bottom:var(--gap-sm);
}
.feature-card:nth-child(2) .chip-icon{ background:var(--amber); }
.feature-card:nth-child(3) .chip-icon{ background:var(--indigo); }
.feature-card:nth-child(4) .chip-icon{ background:var(--slate); }
.feature-card:nth-child(5) .chip-icon{ background:var(--green-deep); }
.feature-card:nth-child(6) .chip-icon{ background:var(--amber-deep); }

/* ===== Additional keyword sections ===== */
.topic-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:var(--gap-md);
}
.topic-card{
  background:var(--white);
  border-radius:14px;
  padding:var(--gap-md);
  box-shadow:var(--shadow);
  border-left:4px solid var(--green);
}
.topic-card:nth-child(2){ border-left-color:var(--amber); }
.topic-card:nth-child(3){ border-left-color:var(--indigo); }
.topic-card:nth-child(4){ border-left-color:var(--slate); }

.freq-table{ width:100%; border-collapse:collapse; font-family:var(--font-mono); font-size:0.9rem; }
.freq-table th, .freq-table td{ padding:10px 14px; border-bottom:1px solid var(--line); text-align:left; }
.freq-table th{ color:var(--ink-soft); text-transform:uppercase; font-size:0.75rem; letter-spacing:0.06em; }

/* ===== Tips / Strategy ===== */
.tips-list{ display:grid; grid-template-columns:1fr 1fr; gap:var(--gap-sm) var(--gap-lg); }
.tips-list li{
  display:flex; gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.tips-list .chip{
  flex-shrink:0;
  width:22px; height:22px;
  border-radius:4px;
  background:var(--green);
  margin-top:4px;
}
.tips-list li:nth-child(3n+2) .chip{ background:var(--amber); }
.tips-list li:nth-child(3n) .chip{ background:var(--indigo); }

/* ===== FAQ Accordion ===== */
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-question{
  width:100%;
  display:flex; align-items:center; justify-content:space-between;
  background:none; border:none;
  padding:20px 0;
  font-family:var(--font-display);
  font-size:1.05rem;
  font-weight:600;
  color:var(--ink);
  text-align:left;
}
.faq-question .plus{
  font-family:var(--font-mono);
  font-size:1.3rem;
  color:var(--indigo);
  transition:transform .2s ease;
}
.faq-item.open .faq-question .plus{ transform:rotate(45deg); }
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.faq-item.open .faq-answer{ max-height:300px; }
.faq-answer p{ padding-bottom:18px; }

/* ===== Contact ===== */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--gap-lg);
  align-items:start;
}
.contact-form{
  background:var(--white);
  border-radius:14px;
  padding:var(--gap-md);
  box-shadow:var(--shadow);
  display:flex; flex-direction:column; gap:var(--gap-sm);
}
.contact-form input, .contact-form textarea{
  width:100%;
  padding:12px 14px;
  border:2px solid var(--line);
  border-radius:8px;
  font-size:1rem;
}
.contact-form textarea{ resize:vertical; min-height:120px; }
.contact-form input:focus, .contact-form textarea:focus{ outline:none; border-color:var(--indigo); }
.contact-info .info-row{ display:flex; gap:14px; margin-bottom:var(--gap-sm); }
.contact-info .chip-icon{
  width:40px; height:40px; border-radius:8px;
  background:var(--indigo); color:var(--white);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:0.9rem;
  flex-shrink:0;
}

/* ===== Footer (exactly 4 columns) ===== */
.site-footer{
  background:var(--indigo-deep);
  color:#D9DCE6;
  padding-top:var(--gap-xl);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr 1fr;
  gap:var(--gap-md);
  padding-bottom:var(--gap-lg);
}
.footer-col h4{
  color:var(--white);
  font-size:0.95rem;
  text-transform:uppercase;
  letter-spacing:0.06em;
  margin-bottom:var(--gap-sm);
}
.footer-col p{ color:#AEB3C4; font-size:0.9rem; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col ul a{ color:#C6C9D6; font-size:0.9rem; transition:color .15s ease; }
.footer-col ul a:hover{ color:var(--amber); }
.footer-logo{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-display); font-weight:700; font-size:1.2rem;
  color:var(--white);
  margin-bottom:var(--gap-sm);
}
.social-row{ display:flex; gap:10px; margin-top:var(--gap-sm); }
.social-row a{
  width:36px; height:36px;
  border-radius:6px;
  background:rgba(255,255,255,0.08);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:0.8rem;
}
.social-row a:hover{ background:var(--amber); color:var(--indigo-deep); }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding:20px 0;
  text-align:center;
  font-size:0.85rem;
  color:#9195A6;
}

/* ===== Legal pages ===== */
.legal-content{ max-width:820px; margin:0 auto; }
.legal-content h2{ margin-top:var(--gap-lg); }
.legal-content h2:first-child{ margin-top:0; }
.legal-updated{ font-family:var(--font-mono); font-size:0.85rem; color:var(--ink-soft); margin-bottom:var(--gap-md); }

/* ===================================================
   RESPONSIVE
=================================================== */
@media (max-width: 1024px){
  .steps-grid{ grid-template-columns:repeat(2,1fr); }
  .feature-grid{ grid-template-columns:repeat(2,1fr); }
  .topic-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .tool-card{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
}

@media (max-width: 768px){
  .nav-links, .nav-cta .btn-outline{ display:none; }
  .nav-toggle{ display:flex; }
  .nav.open .nav-links{
    display:flex !important;
    position:absolute;
    top:100%; left:0; right:0;
    background:var(--bg);
    flex-direction:column;
    padding:20px 24px;
    border-bottom:1px solid var(--line);
    gap:18px;
    z-index:200;
    box-shadow:var(--shadow-lg);
  }
  .hero-grid{ grid-template-columns:1fr; }
  .hero-stats{ gap:var(--gap-md); flex-wrap:wrap; }
  .steps-grid{ grid-template-columns:1fr; }
  .feature-grid{ grid-template-columns:1fr; }
  .tips-list{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:var(--gap-lg) var(--gap-md); }
}

@media (max-width: 480px){
  .footer-grid{ grid-template-columns:1fr; text-align:left; }
  .tile{ width:44px; height:44px; font-size:1.2rem; }
  .hero-actions .btn{ width:100%; }
  .section{ padding:var(--gap-lg) 0; }
}