/*
Theme Name: Wavelength
Theme URI: https://example.com
Author: Wavelength Journal
Description: Custom theme for Wavelength — Field Notes on Sound. Converted from a static HTML/CSS/JS single-page design into a full WordPress theme with real posts, categories, and admin-editable content.
Version: 1.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: wavelength
*/

:root{
  --walnut:#211c18;
  --walnut-2:#2a241f;
  --walnut-3:#332b24;
  --paper:#f3ebda;
  --paper-2:#eae0c8;
  --ink:#211c18;
  --cream:#ede4d2;
  --cream-dim:#c9beac;
  --brass:#c9a24b;
  --brass-bright:#e0be6f;
  --brass-dim:#8c7238;
  --teal:#4fa88f;
  --rust:#b23a2e;
  --violet:#9a6bd6;
  --slate:#7c8cc4;
  --line-dark: rgba(237,228,210,0.14);
  --line-paper: rgba(33,28,24,0.14);
  --shadow: 0 20px 40px -20px rgba(0,0,0,0.55);
  --ease: cubic-bezier(.22,.9,.32,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--walnut);
  color:var(--cream);
  font-family:'Inter',sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;}
h1,h2,h3{font-family:'Fraunces',serif;font-weight:600;margin:0;letter-spacing:-0.01em;}
.eyebrow{
  font-family:'Space Mono',monospace;
  text-transform:uppercase;
  letter-spacing:0.14em;
  font-size:0.72rem;
  color:var(--brass);
}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px;}
button{font-family:inherit;cursor:pointer;}

/* ---------- texture ---------- */
.grain{
  position:fixed;inset:0;pointer-events:none;z-index:200;opacity:0.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- reading progress ---------- */
.progress-rail{position:fixed;top:0;left:0;width:100%;height:3px;z-index:300;background:transparent;pointer-events:none;}
.progress-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--teal),var(--brass));transition:width .12s linear;}

/* ---------- nav ---------- */
header.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(33,28,24,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-dark);
}
.nav-inner{
  max-width:1180px;margin:0 auto;padding:18px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;}
.brand-word{font-family:'Fraunces',serif;font-size:1.28rem;font-weight:600;color:var(--cream);letter-spacing:0.01em;}
.brand-word em{font-style:italic;color:var(--brass);}
.logo-mark{width:32px;height:32px;}
.logo-mark .needle{transform-origin:16px 19px;animation:needleSwing 4.5s ease-in-out infinite;}
@keyframes needleSwing{0%,100%{transform:rotate(-22deg);}50%{transform:rotate(22deg);}}

nav.links{display:flex;gap:28px;list-style:none;margin:0;padding:0;font-family:'Space Mono',monospace;font-size:0.78rem;text-transform:uppercase;letter-spacing:0.08em;}
nav.links a{text-decoration:none;color:var(--cream-dim);position:relative;padding-bottom:4px;transition:color .25s var(--ease);}
nav.links a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--brass);transition:width .3s var(--ease);}
nav.links a:hover{color:var(--cream);}
nav.links a:hover::after{width:100%;}
.nav-cta{
  font-family:'Space Mono',monospace;font-size:0.72rem;text-transform:uppercase;letter-spacing:0.08em;
  color:var(--walnut);background:var(--brass);border:none;border-radius:100px;padding:10px 18px;
  transition:background .25s var(--ease), transform .25s var(--ease);
}
.nav-cta:hover{background:var(--brass-bright);transform:translateY(-1px);}

/* ---------- ticker ---------- */
.ticker-strip{border-bottom:1px solid var(--line-dark);background:var(--walnut-2);overflow:hidden;position:relative;}
.ticker-strip::before,.ticker-strip::after{content:'';position:absolute;top:0;bottom:0;width:70px;z-index:2;pointer-events:none;}
.ticker-strip::before{left:0;background:linear-gradient(90deg,var(--walnut-2),transparent);}
.ticker-strip::after{right:0;background:linear-gradient(270deg,var(--walnut-2),transparent);}
.ticker-track{display:flex;width:max-content;animation:tickerScroll 34s linear infinite;}
.ticker-track span{
  font-family:'Space Mono',monospace;font-size:0.72rem;text-transform:uppercase;letter-spacing:0.12em;
  color:var(--cream-dim);padding:10px 28px;white-space:nowrap;border-right:1px solid var(--line-dark);
}
.ticker-track span em{font-style:normal;color:var(--brass);}
@keyframes tickerScroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ---------- hero ---------- */
.hero{padding:96px 0 64px;text-align:center;position:relative;overflow:hidden;}
.hero::before{
  content:'';position:absolute;inset:-20% -10% auto -10%;height:520px;
  background:radial-gradient(closest-side, rgba(201,162,75,0.14), transparent 70%);
  pointer-events:none;
}
.hero-glow{
  position:absolute;width:420px;height:420px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle, rgba(79,168,143,0.28), transparent 65%);
  transform:translate(-50%,-50%);left:50%;top:40%;mix-blend-mode:screen;
  transition:left .15s ease-out, top .15s ease-out;
  z-index:0;
}
.hero > *{position:relative;z-index:1;}
.hero .eyebrow{display:block;margin-bottom:22px;}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.4rem);line-height:1.05;max-width:820px;margin:0 auto;color:var(--cream);}
.hero h1 em{font-style:italic;color:var(--brass);}
.hero-sub{max-width:560px;margin:26px auto 0;color:var(--cream-dim);font-size:1.06rem;}

.load-in{opacity:0;animation:fadeUp .8s var(--ease) forwards;}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:translateY(0);}}

.vu-meter{
  display:flex;align-items:flex-end;justify-content:center;gap:5px;
  height:76px;margin:52px auto 8px;max-width:520px;
}
.vu-meter .bar{
  width:6px;border-radius:3px 3px 0 0;
  background:linear-gradient(to top, var(--teal), var(--brass));
  animation:vuPulse 1.4s ease-in-out infinite;
  transform-origin:bottom;
}
@keyframes vuPulse{
  0%,100%{transform:scaleY(0.18);}
  50%{transform:scaleY(1);}
}

.hero-cta{
  display:inline-flex;align-items:center;gap:8px;margin-top:34px;
  font-family:'Space Mono',monospace;font-size:0.8rem;text-transform:uppercase;letter-spacing:0.1em;
  color:var(--brass);text-decoration:none;border-bottom:1px solid var(--brass-dim);padding-bottom:4px;
  transition:letter-spacing .3s var(--ease), color .3s var(--ease);
}
.hero-cta:hover{letter-spacing:0.16em;color:var(--brass-bright);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease), transform .7s var(--ease);}
.reveal.in-view{opacity:1;transform:translateY(0);}

/* ---------- featured ---------- */
.featured-section{padding:20px 0 80px;}
.featured-card{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--paper);color:var(--ink);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);
  cursor:pointer;text-decoration:none;
}
.featured-media{background:linear-gradient(160deg,var(--walnut-3),var(--walnut));display:flex;align-items:center;justify-content:center;padding:40px;position:relative;}
.featured-media svg{width:78%;height:auto;transition:transform .2s ease-out;}
.featured-body{padding:52px 52px 52px 46px;display:flex;flex-direction:column;justify-content:center;gap:16px;}
.featured-body .eyebrow{color:var(--rust);}
.featured-body h2{font-size:clamp(1.6rem,2.6vw,2.3rem);line-height:1.12;}
.featured-body p{color:#4a4034;font-size:1rem;}
.card-meta{font-family:'Space Mono',monospace;font-size:0.74rem;color:#7a6d57;text-transform:uppercase;letter-spacing:0.06em;display:flex;gap:10px;align-items:center;}
.read-link{font-family:'Space Mono',monospace;font-size:0.78rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--rust);display:inline-flex;align-items:center;gap:6px;margin-top:6px;}
.featured-card:hover .read-link{gap:12px;}
.read-link svg{transition:transform .3s var(--ease);}

/* ---------- stats ---------- */
.stats-section{padding:0 0 90px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-dark);border-radius:18px;overflow:hidden;border:1px solid var(--line-dark);}
.stat{background:var(--walnut-2);padding:34px 24px;text-align:center;}
.stat .num{font-family:'Fraunces',serif;font-size:2.4rem;color:var(--brass-bright);font-weight:600;}
.stat .lbl{font-family:'Space Mono',monospace;font-size:0.7rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--cream-dim);margin-top:6px;}

/* ---------- filter tabs ---------- */
.filter-bar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:38px;position:relative;}
.filter-btn{
  background:transparent;border:1px solid var(--line-dark);color:var(--cream-dim);
  padding:9px 18px;border-radius:100px;font-family:'Space Mono',monospace;font-size:0.72rem;
  text-transform:uppercase;letter-spacing:0.07em;transition:all .3s var(--ease);
  text-decoration:none;display:inline-block;
}
.filter-btn:hover{color:var(--cream);border-color:var(--brass-dim);}
.filter-btn.active{background:var(--brass);border-color:var(--brass);color:var(--walnut);font-weight:700;}

/* ---------- section head ---------- */
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:22px;flex-wrap:wrap;gap:12px;}
.section-head h2{font-size:1.6rem;color:var(--cream);}
.section-head .eyebrow{color:var(--teal);}

/* ---------- grid ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;padding-bottom:20px;}
.card{
  background:var(--paper);color:var(--ink);border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;cursor:pointer;will-change:transform;text-decoration:none;
  transition:transform .28s var(--ease), box-shadow .28s var(--ease), opacity .4s var(--ease);
}
.card:hover{box-shadow:var(--shadow);}
.card.filtered-out{opacity:0;transform:scale(.92);pointer-events:none;position:absolute;visibility:hidden;}
.card-media{aspect-ratio:16/11;background:linear-gradient(155deg,var(--walnut-3),var(--walnut-2));display:flex;align-items:center;justify-content:center;padding:26px;overflow:hidden;}
.card-media svg{width:64%;height:auto;transition:transform .4s var(--ease);}
.card:hover .card-media svg{transform:scale(1.08) rotate(-2deg);}
.card-body{padding:24px 24px 28px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body .eyebrow{font-size:0.68rem;}
.card-body h3{font-size:1.14rem;line-height:1.25;}
.card-body p{margin:0;color:#544a3c;font-size:0.92rem;flex:1;}

.cat-culture{color:var(--rust);}
.cat-guide{color:var(--teal);}
.cat-technical{color:var(--slate);}
.cat-reviews{color:var(--brass-dim);}
.cat-deepdive{color:var(--violet);}

.post-grid-wrap{position:relative;padding-bottom:70px;}

/* ---------- tune-in / newsletter ---------- */
.tune-in{padding:20px 0 100px;}
.tuner{
  background:var(--walnut-2);border:1px solid var(--line-dark);border-radius:22px;
  padding:56px 48px;text-align:center;position:relative;overflow:hidden;
}
.tuner h2{color:var(--cream);font-size:1.9rem;margin-bottom:10px;}
.tuner p{color:var(--cream-dim);max-width:440px;margin:0 auto 30px;}
.dial-line{max-width:520px;margin:0 auto 30px;height:2px;background:var(--line-dark);position:relative;}
.dial-line .needle-dot{
  position:absolute;top:-6px;width:13px;height:13px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 14px 3px rgba(79,168,143,0.65);
  animation:driftDot 6s ease-in-out infinite;
}
@keyframes driftDot{0%,100%{left:22%;}50%{left:74%;}}
.sub-form{display:flex;gap:10px;max-width:420px;margin:0 auto;flex-wrap:wrap;justify-content:center;}
.sub-form input{
  flex:1;min-width:220px;background:var(--walnut);border:1px solid var(--line-dark);color:var(--cream);
  padding:13px 16px;border-radius:100px;font-family:'Inter',sans-serif;font-size:0.94rem;outline:none;
  transition:border-color .25s var(--ease);
}
.sub-form input:focus{border-color:var(--brass);}
.sub-form button{
  background:var(--brass);color:var(--walnut);border:none;border-radius:100px;padding:13px 24px;
  font-family:'Space Mono',monospace;font-size:0.78rem;text-transform:uppercase;letter-spacing:0.08em;font-weight:700;
  transition:background .25s var(--ease), transform .25s var(--ease);
}
.sub-form button:hover{background:var(--brass-bright);transform:translateY(-1px);}
.sub-msg{margin-top:16px;font-family:'Space Mono',monospace;font-size:0.78rem;color:var(--teal);letter-spacing:0.04em;min-height:1.2em;}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line-dark);padding:64px 0 36px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand p{color:var(--cream-dim);max-width:280px;font-size:0.92rem;}
.footer-col h4{font-family:'Space Mono',monospace;font-size:0.72rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--brass);margin-bottom:14px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--cream-dim);text-decoration:none;font-size:0.9rem;transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--cream);}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding-top:24px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-family:'Space Mono',monospace;font-size:0.72rem;color:var(--cream-dim);
  text-transform:uppercase;letter-spacing:0.06em;
}

/* ---------- single post ---------- */
.post-hero{padding:60px 0 0;}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-family:'Space Mono',monospace;font-size:0.78rem;
  text-transform:uppercase;letter-spacing:0.08em;color:var(--teal);text-decoration:none;margin-bottom:34px;
  background:none;border:none;padding:0;transition:gap .25s var(--ease);
}
.back-link:hover{gap:13px;}
.post-hero .eyebrow{margin-bottom:16px;display:block;}
.post-hero h1{font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.08;max-width:780px;color:var(--cream);}
.post-meta{display:flex;gap:14px;align-items:center;margin-top:22px;font-family:'Space Mono',monospace;font-size:0.76rem;color:var(--cream-dim);text-transform:uppercase;letter-spacing:0.05em;}
.post-illustration{
  margin:44px 0 8px;background:var(--paper);border-radius:22px;padding:50px;display:flex;align-items:center;justify-content:center;
}
.post-illustration svg{width:280px;height:auto;}
.post-body{max-width:700px;margin:56px auto 0;padding-bottom:100px;}
.post-body p{color:var(--cream-dim);font-size:1.06rem;margin:0 0 22px;opacity:0;animation:fadeUp .6s var(--ease) forwards;}
.post-body h2{color:var(--cream);font-size:1.5rem;margin:44px 0 18px;opacity:0;animation:fadeUp .6s var(--ease) forwards;}
.post-body blockquote{
  margin:38px 0;padding:6px 0 6px 26px;border-left:3px solid var(--brass);
  font-family:'Fraunces',serif;font-style:italic;font-size:1.28rem;color:var(--brass-bright);line-height:1.4;
  opacity:0;animation:fadeUp .6s var(--ease) forwards;
}
.related{max-width:700px;margin:0 auto 100px;border-top:1px solid var(--line-dark);padding-top:36px;}
.related h4{font-family:'Space Mono',monospace;font-size:0.72rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--brass);margin-bottom:18px;}
.related-list{display:flex;flex-direction:column;gap:14px;}
.related-item{display:flex;justify-content:space-between;gap:16px;text-decoration:none;color:var(--cream);padding:14px 0;border-bottom:1px solid var(--line-dark);transition:padding-left .25s var(--ease);}
.related-item:hover{padding-left:8px;color:var(--brass-bright);}
.related-item span.eyebrow{white-space:nowrap;}

/* ---------- responsive ---------- */
@media (max-width:900px){
  nav.links{display:none;}
  .featured-card{grid-template-columns:1fr;}
  .featured-body{padding:34px 30px 40px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:560px){
  .wrap{padding:0 20px;}
  .post-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero{padding:70px 0 44px;}
  .stats-grid{grid-template-columns:1fr;}
}

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

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
  .card{transform:none !important;}
}