/*
Theme Name: Inkling Notion
Theme URI: https://example.com
Author: Digiyar
Author URI: https://example.com
Description: Minimal editorial WordPress starter theme — Notion/Linear/Medium inspired. Typography-first, monochrome, generous whitespace.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: inkling-notion
*/

/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */
:root{
  --color-bg: #EFEFEF;
  --color-bg-page: #F4F4F4;
  --color-bg-card: #FFFFFF;
  --color-bg-secondary: #F8F8F8;
  --color-text: #111111;
  --color-text-secondary: #666666;
  --color-border: #D1D1D1;
  --color-border-card: #E0E0E0;
  --color-hover: #F3F3F3;
  --color-accent: #000000;
  --color-highlight: #FFD64D;

  --font-serif: "Nanum Myeongjo", Georgia, serif;
  --font-display: "Nanum Myeongjo", "Archivo Black", serif;
  --font-sans: "Switzer", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Space Mono", "JetBrains Mono", monospace;

  --content-width: 1280px;
  --text-width: 720px;

  --space-8: 8px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-80: 80px;
  --space-96: 96px;
  --space-120: 120px;
  --space-160: 160px;

  --radius-card: 18px;
  --radius-image: 20px;
  --radius-btn: 999px;

  --shadow-soft: 0 8px 30px rgba(0,0,0,.06);
  --shadow-lift: 0 16px 40px rgba(0,0,0,.10);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t-hover: 200ms;
  --t-section: 700ms;
  --t-image: 400ms;
  --t-btn: 250ms;
}

/* ==========================================================================
   2. RESET
   ========================================================================== */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--color-bg-page);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.3;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; transition: opacity var(--t-hover) ease; }
a:hover{ opacity: .7; }
ul{ margin: 0; padding: 0; list-style: none; }
button, input{ font-family: inherit; }

/* ==========================================================================
   2b. SELF-HOSTED FONT: SWITZER
   Switzer isn't on Google Fonts — download the family from
   https://www.dafontfree.co/switzer-font/ and drop the woff2 files into
   /assets/fonts/ using these exact filenames (or edit the src paths below).
   ========================================================================== */
@font-face{
  font-family: "Switzer";
  src: url("assets/fonts/Switzer-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face{
  font-family: "Switzer";
  src: url("assets/fonts/Switzer-Italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face{
  font-family: "Switzer";
  src: url("assets/fonts/Switzer-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ==========================================================================
   3. TYPOGRAPHY
   Scale matches the Nanum Myeongjo (headings) / Switzer (body) spec:
   H1 60/1.2 · H2 50/1.2 · H3 40/1.2 · H4 30/1.2 · H5 24/1.2 · H6 20/1.2 (bold)
   Body 16/1.3 · Text Nav 13/1.0 · Text SM 13/1.2 · Text XXS 10/1.2
   ========================================================================== */
h1,h2,h3,h4,h5,h6{
  font-family: var(--font-serif);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-24);
  color: var(--color-text);
}
h1{ font-size: 60px; line-height: 1.2; }
h2{ font-size: 50px; line-height: 1.2; }
h3{ font-size: 40px; line-height: 1.2; }
h4{ font-size: 30px; line-height: 1.2; }
h5{ font-size: 24px; line-height: 1.2; }
h6{ font-size: 20px; line-height: 1.2; font-weight: 700; }
p{ margin: 0 0 var(--space-16); font-size: 16px; line-height: 1.3; }
.text-nav{ font-size: 13px; line-height: 1; }
.small{ font-size: 13px; line-height: 1.2; color: var(--color-text-secondary); }
.text-xxs{ font-size: 10px; line-height: 1.2; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

/* Article title (blog post H1) */
.article-title{
  font-size: 56px;
  text-align: center;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.article-dek{
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 20px;
  max-width: 640px;
  margin: 0 auto var(--space-24);
}

/* ==========================================================================
   4. LAYOUT / GRID
   ========================================================================== */
.container{
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-32);
}
.container--text{
  max-width: var(--text-width);
  margin: 0 auto;
}
.section{ padding: var(--space-96) 0; }
.section--divider{ border-top: 1px solid var(--color-border); }

.grid-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-24); }
.grid-2{ display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-24); }

@media (max-width: 1024px){
  .grid-3{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px){
  .grid-3, .grid-2{ grid-template-columns: 1fr; }
  h1{ font-size: 44px; }
  h2{ font-size: 34px; }
  .article-title{ font-size: 34px; }
}

/* Blog page two-column split */
.blog-layout{
  display: grid;
  grid-template-columns: 66% 32%;
  gap: 2%;
  align-items: start;
}
@media (max-width: 900px){
  .blog-layout{ grid-template-columns: 1fr; }
}
.blog-sidebar{
  position: sticky;
  top: 100px;
}

/* ==========================================================================
   5. NAVIGATION
   ========================================================================== */
.site-header{
  height: 88px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-hover) ease, background var(--t-hover) ease;
}
.site-header.is-scrolled{ border-bottom-color: var(--color-border); }
.site-header .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo{
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: -0.02em;
}
.main-nav ul{ display: flex; gap: var(--space-32); }
.main-nav a{
  font-size: 15px;
  font-weight: 500;
}
.header-cta{ display: flex; align-items: center; gap: var(--space-16); }
.search-box{
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 8px 16px;
  font-size: 14px;
  background: var(--color-bg-secondary);
}
.menu-toggle{ display: none; }
@media (max-width: 900px){
  .main-nav{ display: none; }
  .menu-toggle{ display: block; }
}

/* ==========================================================================
   6. BUTTONS
   ========================================================================== */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: #fff;
  cursor: pointer;
  transition: background var(--t-btn) ease, transform var(--t-btn) ease, color var(--t-btn) ease;
}
.btn:hover{
  background: #111;
  transform: scale(1.03);
  opacity: 1;
}
.btn--outline{
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--outline:hover{
  background: var(--color-hover);
  transform: none;
}

/* ==========================================================================
   7. HERO
   ========================================================================== */
.hero{
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--space-64) 0;
}
.hero .container{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-64);
  align-items: center;
}
@media (max-width: 900px){
  .hero .container{ grid-template-columns: 1fr; }
  .hero{ min-height: auto; }
}
.hero-text h1{ font-size: 80px; }
.hero-text p{ font-size: 20px; color: var(--color-text-secondary); max-width: 480px; }
.hero-image img{
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--t-image) var(--ease-out), box-shadow var(--t-image) ease;
}
.hero-image img:hover{ transform: scale(1.02); box-shadow: var(--shadow-lift); }

/* Fade-up animation (JS toggles .is-visible) */
.fade-up{
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.fade-up.is-visible{ opacity: 1; transform: translateY(0); }
.fade-up.delay-1{ transition-delay: .1s; }
.fade-up.delay-2{ transition-delay: .2s; }
.fade-up.delay-3{ transition-delay: .3s; }
.fade-up.delay-4{ transition-delay: .4s; }

.section-fade{
  opacity: 0;
  transform: translateY(50px);
  transition: opacity var(--t-section) ease-out, transform var(--t-section) ease-out;
}
.section-fade.is-visible{ opacity: 1; transform: translateY(0); }

/* ==========================================================================
   8. CARDS
   ========================================================================== */
.card{
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--space-24);
  transition: transform var(--t-hover) ease, box-shadow var(--t-hover) ease;
}
.card:hover{
  transform: translateY(-8px);
  box-shadow: var(--shadow-lift);
}
.card-image{
  border-radius: var(--radius-image);
  overflow: hidden;
  margin-bottom: var(--space-16);
}
.card-image img{
  transition: transform var(--t-image) ease;
  width: 100%;
}
.card:hover .card-image img{ transform: scale(1.08); }
.card-meta{ display: flex; gap: var(--space-16); align-items: center; margin-bottom: var(--space-8); }
.card-title{ font-family: var(--font-serif); font-size: 24px; margin: 0 0 var(--space-8); }
.card-excerpt{ color: var(--color-text-secondary); font-size: 15px; }

/* ==========================================================================
   9. ARTICLE (single post)
   ========================================================================== */
.breadcrumbs{ font-size: 14px; color: var(--color-text-secondary); margin-bottom: var(--space-24); }
.read-badge{
  display: inline-block;
  margin: 0 auto var(--space-32);
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  text-align: center;
}
.featured-image{
  border-radius: var(--radius-image);
  overflow: hidden;
  margin: var(--space-32) 0;
}
.article-body{ font-size: 18px; line-height: 1.6; }
.article-body h2{ font-size: 32px; margin-top: var(--space-48); }
.article-body h3{ font-size: 24px; margin-top: var(--space-32); }
.article-body ul{ list-style: none; margin: 0 0 var(--space-16); }
.article-body ul li{ position: relative; padding-left: 20px; margin-bottom: 8px; }
.article-body ul li::before{
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-text);
}
.article-body hr{ border: none; border-top: 1px solid var(--color-border); margin: var(--space-48) 0; }

.post-nav{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-64);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-48);
}
@media (max-width: 640px){ .post-nav{ grid-template-columns: 1fr; } }

/* ==========================================================================
   10. SIDEBAR WIDGETS
   ========================================================================== */
.widget{ margin-bottom: var(--space-48); }
.widget-title{
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
}
.share-row{ display: flex; gap: var(--space-16); }
.share-row a{
  width: 36px; height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.toc-list li{ padding: 8px 0; border-left: 2px solid var(--color-border); padding-left: 16px; font-size: 14px; color: var(--color-text-secondary); }
.toc-list li.active{ border-left-color: var(--color-text); color: var(--color-text); }

/* ==========================================================================
   11. CATEGORY BAND
   ========================================================================== */
.category-band{
  background: var(--color-accent);
  color: #fff;
}
.category-band ul{
  display: flex;
  gap: var(--space-32);
  justify-content: center;
  padding: var(--space-16) 0;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-wrap: wrap;
}
.category-band ul li{
  display: flex;
  align-items: center;
}
.category-band ul li a{
  display: flex;
  align-items: center;
  gap: 8px;
}
/* Keep the emoji glyphs but strip their native color, per spec */
.category-band .cat-icon{
  filter: grayscale(1) brightness(0) invert(1);
  font-style: normal;
}

/* ==========================================================================
   14. WORDMARK HERO (giant title + tagline, like real Inkling Notion home)
   ========================================================================== */
.wordmark-hero{
  text-align: center;
  padding: var(--space-64) var(--space-32) var(--space-48);
}
.wordmark-hero .wordmark{
  font-family: var(--font-display);
  font-size: clamp(48px, 11vw, 130px);
  line-height: 0.95;
  letter-spacing: -0.01em;
  margin: 0;
  text-transform: uppercase;
}
.wordmark-hero .tagline{
  font-family: var(--font-mono), monospace;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: var(--space-16);
}
.divider-plus{
  position: relative;
  border-top: 1px solid var(--color-border);
}
.divider-plus::before{
  content: "+";
  position: absolute;
  left: var(--space-32);
  top: -9px;
  background: var(--color-bg-page);
  padding: 0 6px;
  color: var(--color-text-secondary);
  font-size: 14px;
}

/* Numbered issue-tag cards, dotted top rule (blog grid style) */
.card--tagged{
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--color-border-card);
}
.card--tagged .card-tagline{
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono), monospace;
  font-size: 11px;
  color: var(--color-text-secondary);
  padding: 10px 16px;
  border-bottom: 1px dotted var(--color-border);
}
.card--tagged .card-image{ border-radius: 0; margin-bottom: 0; }
.card--tagged .card-body{ padding: var(--space-16); }
.card--tagged .card-title{ font-size: 20px; }
.card--tagged .card-title a.is-highlighted{ background: var(--color-highlight); padding: 0 2px; }

/* ==========================================================================
   12. NEWSLETTER
   ========================================================================== */
.newsletter{
  background: var(--color-bg-secondary);
  border-radius: var(--radius-card);
  padding: var(--space-64);
  text-align: center;
}
.newsletter-form{
  display: flex;
  justify-content: center;
  gap: var(--space-16);
  margin-top: var(--space-24);
}
.newsletter-form input[type="email"]{
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 0 20px;
  height: 48px;
  min-width: 280px;
}

/* ==========================================================================
   13. FOOTER
   ========================================================================== */
.site-footer{ border-top: 1px solid var(--color-border); padding: var(--space-96) 0 var(--space-48); }
.footer-columns{
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-32);
}
@media (max-width: 900px){
  .footer-columns{ grid-template-columns: 1fr 1fr; }
}
.footer-columns h4.footer-heading{
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
}
.footer-columns li{ margin-bottom: 10px; font-size: 15px; }
.footer-bottom{
  margin-top: var(--space-64);
  padding-top: var(--space-24);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  color: var(--color-text-secondary);
  font-size: 14px;
}

/* ==========================================================================
   15. POST OFFICE / DIGITAL POSTCARD PAGE
   ========================================================================== */
.postoffice-hero{
  background: #f5f1e8;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--space-64) var(--space-32);
}
.postoffice-hero .container{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-64);
  align-items: center;
  max-width: var(--content-width);
  margin: 0 auto;
}
@media (max-width: 900px){ .postoffice-hero .container{ grid-template-columns: 1fr; } }
.postoffice-hero .subtitle{
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #8a7255;
  font-size: 12px;
  font-family: var(--font-mono), monospace;
}
.postoffice-hero h1{
  font-family: "Playfair Display", var(--font-serif);
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.1;
  margin: 16px 0 20px;
  color: #2d2d2d;
}
.postoffice-hero p{
  font-size: 18px;
  line-height: 1.8;
  color: #5f5f5f;
  max-width: 480px;
}
.postoffice-hero .btn{
  background: #1f1f1f;
  border-radius: 10px;
  border-color: #1f1f1f;
}

.envelope-wrapper{ perspective: 1000px; display: flex; justify-content: center; }
.envelope{
  width: 320px;
  max-width: 100%;
  height: 220px;
  background: #d8c0a5;
  position: relative;
  border-radius: 10px;
  box-shadow: 0 15px 35px rgba(0,0,0,.15);
}
.envelope::before{
  content: "";
  position: absolute;
  top: 0; left: 0;
  border-left: 160px solid transparent;
  border-right: 160px solid transparent;
  border-top: 110px solid #c7ab8a;
}
.envelope .letter{
  position: absolute;
  width: 250px;
  height: 160px;
  background: #fffdf8;
  left: 35px; top: 30px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  transition: transform .6s var(--ease-out), box-shadow .6s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}
.envelope:hover .letter{ transform: translateY(-70px); box-shadow: 0 20px 30px rgba(0,0,0,.18); }

/* Postcard artifact */
.postcard{
  background: #fffdf8;
  border-radius: 20px;
  padding: 35px;
  box-shadow: 0 15px 35px rgba(0,0,0,.08);
  border: 1px solid #e8e1d5;
  position: relative;
  transform: rotate(-2deg);
  max-width: 480px;
  margin: 0 auto;
  transition: transform .3s ease;
}
.postcard:hover{ transform: rotate(0deg); }
.postmark{
  position: absolute; top: 25px; right: 25px;
  border: 2px dashed #c7b9a6;
  width: 90px; height: 90px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; color: #8a7255; text-align: center;
  font-family: var(--font-mono), monospace;
}
.stamp{
  position: absolute; bottom: 25px; right: 25px;
  width: 60px; height: 78px;
  border: 2px dashed #8a7255;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
}
.postcard h3{ font-family: "Playfair Display", var(--font-serif); margin-bottom: 16px; color: #2d2d2d; }
.postcard p{ line-height: 1.9; color: #555; }
.postcard .signature{ margin-top: 24px; color: #8a7255; font-style: italic; }

/* Stranger note section */
.stranger-note{
  background: #f5f1e8;
  padding: var(--space-96) var(--space-32);
  text-align: center;
}
.stranger-note h2{
  font-family: "Playfair Display", var(--font-serif);
  color: #2d2d2d;
}
.note-card{
  max-width: 520px;
  margin: var(--space-32) auto 0;
  background: #fffdf8;
  border: 1px solid #e8e1d5;
  border-radius: 20px;
  padding: var(--space-48) var(--space-32);
  box-shadow: 0 15px 35px rgba(0,0,0,.06);
}
.note-card p{ font-size: 19px; font-style: italic; color: #3a3a3a; min-height: 60px; }
.note-card .btn{
  margin-top: var(--space-16);
  background: #1f1f1f;
  border-radius: 10px;
  border-color: #1f1f1f;
}

/* Post office how-it-works cards */
.postoffice-features{ padding: var(--space-80) var(--space-32); background: var(--color-bg-page); }
.postoffice-features .cards{
  max-width: var(--content-width);
  margin: var(--space-48) auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}
@media (max-width: 900px){ .postoffice-features .cards{ grid-template-columns: 1fr; } }
.postoffice-features .card{ background: #fff; }