/*
Theme Name: KR Theme
Theme URI: https://kidsroe.org
Author: 교실 노트 편집팀
Author URI: https://kidsroe.org
Description: 교실 노트 사이트 커스텀 테마
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: Proprietary
Text Domain: kr
*/

:root {
  --kr-chalk: #f4d35e;
  --kr-chalk-deep: #e0b93d;
  --kr-red: #ee6c4d;
  --kr-red-soft: #f4a58c;
  --kr-slate: #293241;
  --kr-slate-soft: #4a5568;
  --kr-cream: #f8f4e3;
  --kr-cream-mist: #eee9d0;
  --kr-line: #d8d2b8;
  --kr-serif: Georgia, 'Times New Roman', 'Nanum Myeongjo', serif;
  --kr-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --kr-fs-base: 1rem;
  --kr-fs-sm: 0.875rem;
  --kr-fs-md: 1.125rem;
  --kr-fs-lg: 1.375rem;
  --kr-fs-xl: 1.75rem;
  --kr-fs-2xl: 2.25rem;
  --kr-fs-3xl: 2.875rem;
  --kr-fs-4xl: 3.5rem;
  --kr-lh-tight: 1.25;
  --kr-lh-body: 1.75;
  --kr-lh-relaxed: 1.9;
  --kr-space-2: 1rem;
  --kr-space-3: 1.5rem;
  --kr-space-4: 2rem;
  --kr-space-5: 3rem;
  --kr-space-6: 4rem;
  --kr-space-7: 5.5rem;
  --kr-radius-sm: 4px;
  --kr-radius-md: 10px;
  --kr-radius-lg: 16px;
  --kr-shadow-flat: 0 1px 3px rgba(41, 50, 65, 0.08);
  --kr-shadow-lift: 0 8px 24px rgba(41, 50, 65, 0.10);
  --kr-container-max: 1140px;
  --kr-transition-base: 0.22s ease-out;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--kr-cream);
  color: var(--kr-slate);
  font-family: var(--kr-serif);
  font-size: var(--kr-fs-base);
  line-height: var(--kr-lh-body);
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--kr-serif);
  font-weight: 400;
  line-height: var(--kr-lh-tight);
  margin: 0 0 var(--kr-space-3);
  color: var(--kr-slate);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--kr-fs-4xl); font-weight: 400; }
h2 { font-size: var(--kr-fs-3xl); font-weight: 400; }
h3 { font-size: var(--kr-fs-2xl); font-weight: 500; }
h4 { font-size: var(--kr-fs-xl); font-weight: 500; }
h5 { font-size: var(--kr-fs-lg); font-weight: 600; }
h6 { font-size: var(--kr-fs-md); font-weight: 600; }

p, li { line-height: var(--kr-lh-body); }
p { margin: 0 0 var(--kr-space-3); }

.kr-label,
.kr-eyebrow,
.kr-nav-link,
.kr-btn,
.kr-form label,
.kr-post-meta {
  font-family: var(--kr-sans);
}

code {
  background: var(--kr-cream-mist);
  padding: 0.12em 0.4em;
  border-radius: 3px;
  color: var(--kr-slate);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

pre {
  background: var(--kr-slate);
  color: var(--kr-cream);
  padding: var(--kr-space-3);
  border-radius: var(--kr-radius-md);
  overflow-x: auto;
  margin: var(--kr-space-3) 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

a {
  color: var(--kr-red);
  text-decoration: underline;
  text-decoration-color: var(--kr-chalk);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color var(--kr-transition-base), text-decoration-color var(--kr-transition-base);
}

a:hover,
a:focus-visible {
  color: var(--kr-slate);
  text-decoration-color: var(--kr-red);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.kr-skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--kr-slate);
  color: var(--kr-cream);
  padding: var(--kr-space-2) var(--kr-space-3);
  z-index: 999;
  text-decoration: none;
  font-family: var(--kr-sans);
}

.kr-skip-link:focus { top: 0; color: var(--kr-cream); }

.kr-container {
  width: 100%;
  max-width: var(--kr-container-max);
  margin: 0 auto;
  padding: 0 var(--kr-space-3);
}

.kr-header {
  background: rgba(248, 244, 227, 0.95);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid transparent;
  position: sticky;
  top: 0;
  z-index: 90;
  transition: border-color var(--kr-transition-base);
}

.kr-header.is-scrolled {
  border-bottom-color: var(--kr-line);
}

.kr-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kr-space-3);
  padding: 0.9rem 0;
}

.kr-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}

.kr-logo:hover { text-decoration: none; }

.kr-logo-mark { width: 32px; height: 32px; }

.kr-logo-name {
  font-family: var(--kr-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--kr-slate);
  letter-spacing: -0.01em;
  line-height: 1;
}

.kr-logo-tag {
  font-family: var(--kr-sans);
  font-size: 0.7rem;
  color: var(--kr-slate-soft);
  letter-spacing: 0.03em;
  display: block;
  margin-top: 0.2rem;
}

.kr-nav {
  display: flex;
  align-items: center;
  gap: var(--kr-space-3);
  flex-wrap: wrap;
}

.kr-nav-link {
  color: var(--kr-slate);
  font-family: var(--kr-sans);
  font-size: 0.94rem;
  font-weight: 500;
  padding: 0.35rem 0;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--kr-transition-base), border-color var(--kr-transition-base);
}

.kr-nav-link:hover,
.kr-nav-link:focus-visible,
.kr-nav-link.is-current {
  color: var(--kr-red);
  border-color: var(--kr-chalk);
  text-decoration: none;
}

.kr-nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  color: var(--kr-slate);
  cursor: pointer;
  padding: 0.4rem;
}

.kr-hero {
  padding: var(--kr-space-7) 0 var(--kr-space-6);
  position: relative;
  overflow: hidden;
}

.kr-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 5% 20%, rgba(244, 211, 94, 0.15) 0, transparent 50%),
    radial-gradient(ellipse at 95% 80%, rgba(238, 108, 77, 0.08) 0, transparent 50%);
  pointer-events: none;
}

.kr-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--kr-space-5);
  align-items: center;
}

.kr-hero-quote {
  font-family: var(--kr-serif);
  font-size: clamp(2rem, 4.5vw, var(--kr-fs-4xl));
  font-weight: 400;
  line-height: 1.28;
  color: var(--kr-slate);
  letter-spacing: -0.015em;
  margin: 0;
}

.kr-hero-quote::before {
  content: '"';
  font-size: 1.4em;
  color: var(--kr-red);
  line-height: 0;
  vertical-align: -0.15em;
  margin-right: 0.05em;
}

.kr-hero-eyebrow {
  font-family: var(--kr-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--kr-red);
  text-transform: uppercase;
  margin-bottom: var(--kr-space-2);
  display: inline-block;
}

.kr-hero-context {
  background: #fff;
  border: 1px solid var(--kr-line);
  border-left: 4px solid var(--kr-chalk);
  border-radius: var(--kr-radius-md);
  padding: var(--kr-space-3);
  box-shadow: var(--kr-shadow-flat);
}

.kr-hero-context-title {
  font-family: var(--kr-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--kr-slate);
  margin: 0 0 0.6rem;
}

.kr-hero-context p {
  font-size: 0.94rem;
  color: var(--kr-slate-soft);
  margin: 0 0 0.6rem;
}

.kr-hero-context-link {
  font-family: var(--kr-sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--kr-red);
  text-decoration: none;
  letter-spacing: 0.03em;
}

.kr-hero-context-link:hover,
.kr-hero-context-link:focus-visible {
  color: var(--kr-slate);
  text-decoration: none;
}

.kr-hero-context-link::after { content: " →"; }

.kr-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  background: var(--kr-red);
  color: var(--kr-cream);
  font-family: var(--kr-sans);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--kr-radius-sm);
  text-decoration: none;
  transition: background var(--kr-transition-base);
  border: 0;
  cursor: pointer;
}

.kr-btn:hover,
.kr-btn:focus-visible {
  background: var(--kr-slate);
  color: var(--kr-cream);
  text-decoration: none;
}

.kr-btn-ghost {
  background: transparent;
  color: var(--kr-slate);
  border: 1px solid var(--kr-line);
}

.kr-btn-ghost:hover,
.kr-btn-ghost:focus-visible {
  background: var(--kr-cream-mist);
  color: var(--kr-slate);
}

.kr-section {
  padding: var(--kr-space-7) 0;
}

.kr-section.is-mist { background: var(--kr-cream-mist); }

.kr-section-head {
  max-width: 780px;
  margin: 0 auto var(--kr-space-5);
}

.kr-section-head.is-center { text-align: center; }

.kr-section-eyebrow {
  font-family: var(--kr-sans);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--kr-red);
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--kr-space-2);
}

/* Today's Picks - 3 카드 (분필판 스타일) */
.kr-picks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kr-space-3);
}

.kr-pick-card {
  background: #fff;
  border: 1px solid var(--kr-line);
  border-radius: var(--kr-radius-md);
  padding: var(--kr-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--kr-space-2);
  position: relative;
  transition: border-color var(--kr-transition-base), box-shadow var(--kr-transition-base), transform var(--kr-transition-base);
}

.kr-pick-card:hover {
  border-color: var(--kr-chalk-deep);
  box-shadow: var(--kr-shadow-lift);
  transform: translateY(-2px);
}

.kr-pick-card-tag {
  font-family: var(--kr-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--kr-red);
  text-transform: uppercase;
}

.kr-pick-card h3 {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0;
  line-height: 1.35;
}

.kr-pick-card h3 a {
  color: var(--kr-slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.kr-pick-card h3 a:hover,
.kr-pick-card h3 a:focus-visible {
  color: var(--kr-red);
  border-bottom-color: var(--kr-chalk);
  text-decoration: none;
}

.kr-pick-card-excerpt {
  color: var(--kr-slate-soft);
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}

/* 카테고리 리스트 (라인 구분자 + 우측 카운트) */
.kr-cat-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--kr-line);
}

.kr-cat-list li {
  border-bottom: 1px solid var(--kr-line);
}

.kr-cat-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--kr-space-3) 0;
  color: var(--kr-slate);
  text-decoration: none;
  transition: padding-left var(--kr-transition-base);
}

.kr-cat-list a:hover,
.kr-cat-list a:focus-visible {
  padding-left: 0.6rem;
  color: var(--kr-red);
  text-decoration: none;
}

.kr-cat-name {
  font-family: var(--kr-serif);
  font-size: var(--kr-fs-lg);
  font-weight: 500;
}

.kr-cat-desc {
  display: block;
  font-family: var(--kr-sans);
  font-size: 0.86rem;
  color: var(--kr-slate-soft);
  margin-top: 0.3rem;
  font-weight: 400;
}

.kr-cat-count {
  font-family: var(--kr-sans);
  font-size: 0.78rem;
  color: var(--kr-slate-soft);
  letter-spacing: 0.06em;
  flex-shrink: 0;
  margin-left: var(--kr-space-3);
}

.kr-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.kr-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.kr-article {
  padding: var(--kr-space-6) 0;
}

.kr-article-head {
  max-width: 780px;
  margin: 0 auto var(--kr-space-5);
}

.kr-article-body {
  max-width: 780px;
  margin: 0 auto;
  font-size: var(--kr-fs-md);
  line-height: var(--kr-lh-relaxed);
}

.kr-article-body h2 { margin-top: var(--kr-space-6); }
.kr-article-body h3 { margin-top: var(--kr-space-5); }

.kr-article-body ul,
.kr-article-body ol { padding-left: 1.5rem; }

.kr-article-body li { margin-bottom: 0.5rem; }

.kr-article-body blockquote {
  border-left: 4px solid var(--kr-chalk);
  padding: 0.4rem 0 0.4rem var(--kr-space-3);
  margin: var(--kr-space-3) 0;
  color: var(--kr-slate-soft);
  font-style: italic;
}

.kr-article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--kr-space-3) 0;
  font-size: 0.98rem;
  font-family: var(--kr-sans);
}

.kr-article-body th,
.kr-article-body td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--kr-line);
}

.kr-article-body th {
  background: var(--kr-cream-mist);
  color: var(--kr-slate);
  font-weight: 600;
}

.kr-breadcrumb {
  font-family: var(--kr-sans);
  font-size: 0.82rem;
  color: var(--kr-slate-soft);
  margin-bottom: var(--kr-space-3);
  letter-spacing: 0.02em;
}

.kr-breadcrumb a { color: var(--kr-red); text-decoration: none; }
.kr-breadcrumb a:hover,
.kr-breadcrumb a:focus-visible { color: var(--kr-slate); text-decoration: underline; }

.kr-breadcrumb span[aria-hidden] { margin: 0 0.55rem; color: var(--kr-line); }

.kr-faq {
  max-width: 820px;
  margin: 0 auto;
}

.kr-faq-item {
  border-bottom: 1px solid var(--kr-line);
  padding: var(--kr-space-3) 0;
}

.kr-faq-item h3 {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: var(--kr-space-2);
}

.kr-district-card {
  background: #fff;
  border: 1px solid var(--kr-line);
  border-radius: var(--kr-radius-md);
  padding: var(--kr-space-4);
}

.kr-district-card + .kr-district-card { margin-top: var(--kr-space-3); }

.kr-district-name {
  font-family: var(--kr-serif);
  font-size: 1.3rem;
  font-weight: 500;
  margin: 0 0 0.35rem;
  color: var(--kr-slate);
}

.kr-district-area {
  font-family: var(--kr-sans);
  font-size: 0.78rem;
  color: var(--kr-red);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}

.kr-footer {
  background: var(--kr-slate);
  color: var(--kr-cream-mist);
  padding: var(--kr-space-6) 0 var(--kr-space-4);
  font-size: 0.94rem;
  font-family: var(--kr-sans);
}

.kr-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--kr-space-4);
  margin-bottom: var(--kr-space-4);
}

.kr-footer-col-head {
  font-family: var(--kr-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--kr-cream);
  margin-bottom: var(--kr-space-2);
}

.kr-footer-signature {
  font-family: var(--kr-serif);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--kr-cream);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.kr-footer-tag {
  font-family: var(--kr-sans);
  font-size: 0.78rem;
  color: var(--kr-chalk);
  letter-spacing: 0.05em;
  margin-bottom: var(--kr-space-3);
}

.kr-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.kr-footer-links li { margin-bottom: 0.4rem; }

.kr-footer-links a {
  color: var(--kr-cream-mist);
  text-decoration: none;
  font-size: 0.9rem;
}

.kr-footer-links a:hover,
.kr-footer-links a:focus-visible { color: var(--kr-chalk); }

.kr-footer-bottom {
  border-top: 1px solid rgba(248, 244, 227, 0.1);
  padding-top: var(--kr-space-3);
  color: var(--kr-slate-soft);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  display: flex;
  justify-content: space-between;
  gap: var(--kr-space-3);
  flex-wrap: wrap;
}

.kr-form {
  max-width: 640px;
  margin: 0 auto;
  display: grid;
  gap: var(--kr-space-3);
}

.kr-form-field { display: grid; gap: 0.4rem; }

.kr-form label {
  font-family: var(--kr-sans);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--kr-slate);
  letter-spacing: 0.02em;
}

.kr-form input,
.kr-form textarea,
.kr-form select {
  font-family: var(--kr-sans);
  font-size: 0.98rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--kr-line);
  border-radius: var(--kr-radius-sm);
  background: #fff;
  color: var(--kr-slate);
  transition: border-color var(--kr-transition-base);
}

.kr-form input:focus,
.kr-form textarea:focus,
.kr-form select:focus {
  outline: 0;
  border-color: var(--kr-red);
}

.kr-form textarea { min-height: 160px; resize: vertical; font-family: var(--kr-sans); }

.kr-form-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.kr-notice {
  padding: var(--kr-space-3);
  background: rgba(244, 211, 94, 0.2);
  border-left: 3px solid var(--kr-chalk-deep);
  border-radius: var(--kr-radius-sm);
  color: var(--kr-slate);
  font-family: var(--kr-sans);
}

.kr-contact-line {
  background: #fff;
  border: 1px solid var(--kr-line);
  border-radius: var(--kr-radius-md);
  padding: var(--kr-space-3);
  max-width: 640px;
  margin: 0 auto var(--kr-space-4);
  text-align: center;
  font-family: var(--kr-sans);
}

.kr-contact-line-label {
  font-size: 0.78rem;
  color: var(--kr-slate-soft);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.3rem;
}

.kr-contact-line-email {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--kr-red);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.kr-contact-line-email:hover,
.kr-contact-line-email:focus-visible {
  color: var(--kr-slate);
  text-decoration: none;
}

.kr-post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kr-space-3);
  margin-top: var(--kr-space-4);
}

.kr-post-card {
  background: #fff;
  border: 1px solid var(--kr-line);
  border-radius: var(--kr-radius-md);
  padding: var(--kr-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--kr-space-2);
  transition: border-color var(--kr-transition-base), box-shadow var(--kr-transition-base);
}

.kr-post-card:hover {
  border-color: var(--kr-chalk-deep);
  box-shadow: var(--kr-shadow-lift);
}

.kr-post-card-eyebrow {
  font-family: var(--kr-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--kr-red);
  text-transform: uppercase;
}

.kr-post-card h3 {
  font-size: var(--kr-fs-lg);
  font-weight: 500;
  margin: 0;
  line-height: 1.35;
}

.kr-post-card h3 a { color: var(--kr-slate); text-decoration: none; }
.kr-post-card h3 a:hover,
.kr-post-card h3 a:focus-visible { color: var(--kr-red); }

.kr-post-card-excerpt { color: var(--kr-slate-soft); margin: 0; font-size: 0.94rem; }

.kr-post-meta {
  font-family: var(--kr-sans);
  font-size: 0.76rem;
  color: var(--kr-slate-soft);
  margin: 0;
  letter-spacing: 0.02em;
}

.kr-post-meta-eyebrow {
  font-family: var(--kr-sans);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--kr-red);
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--kr-space-2);
}

.kr-archive { padding: var(--kr-space-6) 0; }

.kr-archive-desc {
  max-width: 720px;
  margin: var(--kr-space-3) auto 0;
  color: var(--kr-slate-soft);
}

@media (max-width: 900px) {
  .kr-hero-inner { grid-template-columns: 1fr; }
  .kr-nav {
    position: fixed;
    inset: 0 0 auto 0;
    background: var(--kr-cream);
    flex-direction: column;
    padding: 5rem var(--kr-space-3) var(--kr-space-4);
    gap: var(--kr-space-3);
    transform: translateY(-100%);
    transition: transform var(--kr-transition-base);
    border-bottom: 1px solid var(--kr-line);
    z-index: 80;
  }
  .kr-nav.is-open { transform: translateY(0); }
  .kr-nav-toggle { display: inline-flex; }
  .kr-picks { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .kr-footer-grid { grid-template-columns: 1fr; }
  .kr-post-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  :root {
    --kr-fs-3xl: 2rem;
    --kr-fs-4xl: 2.4rem;
  }
  .kr-section { padding: var(--kr-space-5) 0; }
  .kr-footer-bottom { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  .kr-reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
  * { transition: none; animation: none; }
}