@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600;700&display=swap');

/* ═══════════════════════════════════════════════════════════
   AG REGEX — 정규식 테스터 (2112 / agregex)
   DesignKit IDE 킷 변형: 코드 에디터 크롬(파일탭·라인넘버 거터·신택스 액센트)
   컬러 = Tokyo Night 계열(다크 blue/purple, 라이트 day). Fira Code.
   기능 레퍼런스 regex101(3분할 워크벤치)·jsonformatter(2패널) / 무드 dark(Linear·Vercel).
   ※ 형제 개발자툴과 구분: 2105 green·2106 blue·2108 cyan·2109 nordic·2110 violet ↔ 2112 IDE editor.
═══════════════════════════════════════════════════════════ */

:root {
  /* ── Tokyo Night (다크 기본) ── */
  --primary:#7AA2F7; --primary-dark:#5A80D8; --accent:#BB9AF7;
  --grad:linear-gradient(135deg,#7AA2F7,#BB9AF7);
  --bg:#1A1B26; --surface:#1F2335; --surface-2:#24283B; --surface-3:#181920;
  --border:#2C314A; --border-2:#3B4261; --border-soft:#232634;
  --text:#C0CAF5; --text-strong:#E8ECFB; --text-2:#9AA5CE; --text-3:#565F89;
  --ok:#9ECE6A; --err:#F7768E; --warn:#E0AF68; --cyan:#7DCFFF;
  --mark:color-mix(in srgb, var(--ok) 30%, transparent);
  --mark-active:color-mix(in srgb, var(--warn) 34%, transparent);
  --primary-alpha: color-mix(in srgb, var(--primary) 20%, transparent);
  --primary-glow:  color-mix(in srgb, var(--primary) 30%, transparent);

  --gutter:40px;
  --bd:1px;
  --r-1:5px; --r-2:6px; --r-3:8px; --r-4:10px;
  --sh-1:0 1px 2px rgba(0,0,0,.34);
  --sh-2:0 4px 16px rgba(0,0,0,.44);
  --glow:0 0 0 1px var(--primary-alpha), 0 8px 26px var(--primary-glow);
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --t1:130ms; --t2:240ms;
  --maxw:1000px;
}

/* ── 라이트 (Tokyo Night Day) ── */
[data-theme="light"] {
  --primary:#3760BF; --primary-dark:#2A4C9E; --accent:#9854C9;
  --grad:linear-gradient(135deg,#3760BF,#9854C9);
  --bg:#F0F1F6; --surface:#FFFFFF; --surface-2:#E9EBF3; --surface-3:#F5F6FA;
  --border:#DEE1EE; --border-2:#C6CBE0; --border-soft:#EAECF4;
  --text:#343B58; --text-strong:#1F2335; --text-2:#5A6288; --text-3:#8A90B8;
  --ok:#587539; --err:#C64343; --warn:#8F5E15; --cyan:#166B88;
  --mark:color-mix(in srgb, #9ECE6A 48%, transparent);
  --mark-active:color-mix(in srgb, #E0AF68 52%, transparent);
}

*, *::before, *::after { box-sizing:border-box; margin:0; padding:0; }

body {
  font-family:'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  color:var(--text);
  min-height:100vh;
  display:flex; flex-direction:column; align-items:center;
  padding:0 20px 76px;
  overflow-x:hidden;
  background:
    radial-gradient(760px 420px at 88% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%),
    radial-gradient(760px 440px at 6% -6%, color-mix(in srgb, var(--primary) 10%, transparent), transparent 60%),
    var(--bg);
  background-attachment:fixed;
}

/* ─── HEADER (에디터 탭바) ─── */
.site-header {
  position:sticky; top:0; z-index:50;
  width:100vw; margin-bottom:10px;
  border-bottom:var(--bd) solid var(--border);
  background:color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
}
.site-header__inner {
  max-width:var(--maxw); margin:0 auto; height:56px; padding:0 20px;
  display:flex; align-items:center; justify-content:space-between;
}
.site-header__logo { display:inline-flex; align-items:center; gap:10px; text-decoration:none; color:var(--text-strong); font-weight:700; }
.logo-badge {
  position:relative; width:32px; height:30px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:var(--r-2); border:var(--bd) solid var(--border-2);
  background:var(--surface-2); color:var(--primary); overflow:hidden;
}
.logo-badge::before { content:''; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--accent); }
.logo-badge svg { width:16px; height:16px; }
.logo-text { display:inline-flex; flex-direction:column; line-height:1.12; gap:1px; }
.logo-main { font-size:1.0rem; font-weight:700; letter-spacing:-0.02em; color:var(--text-strong); }
.logo-main .accent { color:var(--primary); }
.logo-sub { font-size:0.54rem; font-weight:700; letter-spacing:0.22em; color:var(--text-3); }

.header-actions { display:flex; align-items:center; gap:6px; }
.site-header__nav { display:flex; align-items:center; gap:2px; }
.site-header__nav a {
  font-size:0.78rem; font-weight:500; color:var(--text-2); text-decoration:none;
  padding:7px 10px; border-radius:var(--r-1) var(--r-1) 0 0;
  border-bottom:2px solid transparent; transition:all var(--t1) var(--ease);
}
.site-header__nav a:hover { color:var(--primary); border-bottom-color:var(--primary); background:var(--surface-2); }
@media (max-width:820px){ .site-header__nav { display:none; } }
.theme-toggle-btn {
  width:34px; height:34px; display:inline-flex; align-items:center; justify-content:center;
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1);
  color:var(--text-2); cursor:pointer; transition:all var(--t1) var(--ease);
}
.theme-toggle-btn:hover { color:var(--primary); border-color:var(--primary); }
.theme-toggle-btn svg { width:16px; height:16px; }
.theme-toggle-btn .ic-dark { display:none; }
[data-theme="light"] .theme-toggle-btn .ic-light { display:none; }
[data-theme="light"] .theme-toggle-btn .ic-dark { display:inline-flex; }
.lang-select {
  font-family:inherit; font-size:0.76rem; font-weight:600; color:var(--text-2);
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1);
  padding:7px 26px 7px 11px; cursor:pointer; outline:none;
  appearance:none; -webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23565F89' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 10px center;
  transition:border-color var(--t1) var(--ease), color var(--t1) var(--ease);
}
.lang-select:hover { border-color:var(--primary); color:var(--text-strong); }
@media (max-width:420px){ .lang-select { display:none; } }

/* ─── HERO ─── */
.hero { width:100%; max-width:var(--maxw); margin:36px auto 6px; text-align:left; }
.hero-icon {
  display:inline-flex; align-items:center; justify-content:center;
  width:52px; height:52px; margin-bottom:20px;
  background:var(--surface-2); border:var(--bd) solid var(--border-2);
  color:var(--primary); border-radius:var(--r-3);
  box-shadow:var(--sh-2), inset 0 0 0 1px color-mix(in srgb, var(--primary) 18%, transparent);
}
.hero-icon svg { width:26px; height:26px; }
.hero h1 {
  font-size:clamp(1.9rem, 5.4vw, 2.9rem); font-weight:700; color:var(--text-strong);
  letter-spacing:-0.03em; line-height:1.16; margin-bottom:16px;
}
.hero h1 .grad { background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero h1 .grad::before { content:'const '; -webkit-text-fill-color:var(--accent); color:var(--accent); font-weight:500; }
.hero p { font-size:0.92rem; color:var(--text-2); line-height:1.75; max-width:620px; word-break:keep-all; }

/* ─── SECTION LABEL (파일 탭) ─── */
.section-label { width:100%; max-width:var(--maxw); margin:36px auto 14px; }
.section-label span {
  display:inline-flex; align-items:center; font-size:0.76rem; font-weight:600; color:var(--text-2);
  padding:6px 14px 6px 11px; background:var(--surface-2);
  border:var(--bd) solid var(--border); border-bottom:2px solid var(--primary);
  border-radius:var(--r-2) var(--r-2) 0 0;
}
.section-label span::before { content:'\25BE'; color:var(--primary); font-size:0.68rem; margin-right:7px; }

/* ─── WORKBENCH ─── */
.workbench { width:100%; max-width:var(--maxw); margin:0 auto; }

.panel {
  position:relative; background:var(--surface); border:var(--bd) solid var(--border); border-radius:var(--r-4);
  box-shadow:var(--sh-1); overflow:hidden; margin-bottom:16px;
}
.panel-bar {
  display:flex; align-items:center; gap:8px;
  padding:10px 16px; background:var(--surface-2); border-bottom:var(--bd) solid var(--border);
  font-size:0.72rem; font-weight:600; letter-spacing:0.02em; color:var(--text-3);
}
.panel-bar::before {
  content:''; width:9px; height:9px; border-radius:50%;
  background:var(--err); box-shadow:14px 0 0 var(--warn), 28px 0 0 var(--ok);
  margin-right:30px;
}
.panel-bar .pb-name { color:var(--text-2); }
.panel-bar .pb-right { margin-left:auto; color:var(--text-2); font-weight:700; }
.panel-body { padding:18px 16px 18px calc(var(--gutter) + 8px); position:relative; }
/* 라인넘버 거터 */
.panel-body::before {
  content:''; position:absolute; left:0; top:0; bottom:0; width:var(--gutter);
  background:var(--surface-3); border-right:var(--bd) solid var(--border);
}

/* ─── 패턴 입력 ─── */
.rep-label, .field-label { display:block; font-size:0.78rem; font-weight:600; color:var(--text-2); margin-bottom:9px; }
.rep-label::before, .field-label::before { content:'let '; color:var(--accent); font-weight:500; }
.pattern-field {
  display:flex; align-items:center; gap:0;
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-2);
  padding:0 12px; transition:all var(--t1) var(--ease);
}
.pattern-field:focus-within { border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-alpha); }
.pattern-field.err { border-color:var(--err); box-shadow:0 0 0 3px color-mix(in srgb, var(--err) 22%, transparent); }
.slash { color:var(--accent); font-size:1.35rem; font-weight:700; user-select:none; padding:0 2px; }
.pattern-input {
  flex:1; min-width:0; padding:14px 10px;
  font-family:inherit; font-size:1.14rem; font-weight:600; letter-spacing:0.01em;
  background:transparent; border:none; color:var(--text-strong); outline:none; word-break:break-all;
}
.pattern-input::placeholder { color:var(--text-3); font-weight:400; }
.flags-readout { color:var(--cyan); font-size:1.02rem; font-weight:700; user-select:none; min-width:10px; }

.flags-row { display:flex; gap:7px; flex-wrap:wrap; margin-top:13px; }
.flag-chip {
  display:inline-flex; flex-direction:column; align-items:center; gap:1px;
  font-family:inherit; min-width:44px; padding:7px 10px 6px;
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1);
  cursor:pointer; transition:all var(--t1) var(--ease); user-select:none;
}
.flag-chip .fc-key { font-size:0.92rem; font-weight:700; color:var(--text-2); line-height:1; }
.flag-chip .fc-lbl { font-size:0.52rem; font-weight:500; color:var(--text-3); letter-spacing:0.01em; }
.flag-chip:hover { border-color:var(--primary); }
.flag-chip.on { background:color-mix(in srgb, var(--primary) 16%, var(--surface-2)); border-color:var(--primary); }
.flag-chip.on .fc-key, .flag-chip.on .fc-lbl { color:var(--primary); }

.input-msg { margin-top:11px; font-size:0.75rem; min-height:1.1em; color:var(--text-3); }
.input-msg.err { color:var(--err); }
.input-msg.ok { color:var(--ok); }
.input-msg b { color:var(--text-2); font-weight:700; }

.quick-row { display:flex; gap:7px; flex-wrap:wrap; margin-top:13px; align-items:center; }
.quick-lbl { font-size:0.64rem; font-weight:700; color:var(--text-3); margin-right:2px; letter-spacing:0.03em; }
.quick-chip {
  font-family:inherit; font-size:0.72rem; font-weight:500; color:var(--text-2);
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1);
  padding:6px 11px; cursor:pointer; transition:all var(--t1) var(--ease);
}
.quick-chip:hover { color:var(--primary); border-color:var(--primary); }

/* ─── 테스트 문자열 (하이라이트 오버레이) ─── */
.editor-wrap { position:relative; }
.editor-common {
  width:100%; min-height:190px; padding:14px 16px;
  font-family:inherit; font-size:0.92rem; font-weight:400; line-height:1.75; letter-spacing:0;
  border:var(--bd) solid var(--border-2); border-radius:var(--r-2);
  white-space:pre-wrap; word-break:break-word; overflow-wrap:break-word; tab-size:2;
}
.editor-highlight {
  position:absolute; inset:0; margin:0; z-index:1;
  color:transparent; background:var(--surface-2); pointer-events:none; overflow:hidden;
}
.editor-highlight mark { background:var(--mark); color:transparent; border-radius:2px; box-shadow:0 0 0 1px color-mix(in srgb, var(--ok) 46%, transparent); }
.editor-highlight mark.m-alt { background:var(--mark-active); box-shadow:0 0 0 1px color-mix(in srgb, var(--warn) 48%, transparent); }
.test-input {
  position:relative; z-index:2;
  background:transparent; color:var(--text-strong); outline:none; resize:vertical; caret-color:var(--primary);
}
.test-input:focus { border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-alpha); }
.test-input::placeholder { color:var(--text-3); font-weight:400; }

/* ─── 결과 (탭) ─── */
.tabs { display:flex; gap:6px; margin-bottom:16px; flex-wrap:wrap; }
.tab {
  font-family:inherit; font-size:0.76rem; font-weight:600; color:var(--text-3);
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1);
  padding:8px 15px; cursor:pointer; transition:all var(--t1) var(--ease);
}
.tab:hover { color:var(--text-2); }
.tab.active { background:color-mix(in srgb, var(--primary) 15%, var(--surface-2)); border-color:var(--primary); color:var(--primary); }
.tab-panel { display:none; }
.tab-panel.active { display:block; }

.match-summary { display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-bottom:14px; }
.match-count {
  font-size:0.78rem; font-weight:700; color:var(--ok);
  background:color-mix(in srgb, var(--ok) 13%, var(--surface-2));
  border:var(--bd) solid color-mix(in srgb, var(--ok) 40%, transparent); border-radius:var(--r-1); padding:5px 12px;
}
.match-count.zero { color:var(--text-3); background:var(--surface-2); border-color:var(--border); }
.match-list { display:flex; flex-direction:column; gap:10px; }
.match-card { background:var(--surface-2); border:var(--bd) solid var(--border); border-radius:var(--r-3); padding:12px 14px; }
.match-card-head { display:flex; align-items:center; gap:9px; flex-wrap:wrap; margin-bottom:2px; }
.match-idx { font-size:0.62rem; font-weight:700; color:var(--bg); background:var(--primary); border-radius:var(--r-1); padding:3px 8px; letter-spacing:0.02em; }
.match-pos { font-size:0.68rem; color:var(--text-3); }
.match-pos b { color:var(--text-2); font-weight:700; }
.match-text { font-size:0.92rem; font-weight:600; color:var(--text-strong); word-break:break-all; background:var(--mark); border-radius:2px; padding:1px 4px; display:inline; }
.groups { display:flex; flex-direction:column; gap:5px; margin-top:9px; padding-top:9px; border-top:var(--bd) dashed var(--border-2); }
.group-row { display:flex; align-items:baseline; gap:9px; font-size:0.8rem; }
.group-key { color:var(--accent); font-weight:700; white-space:nowrap; min-width:44px; }
.group-key::before { content:'$'; color:var(--text-3); }
.group-val { color:var(--text); word-break:break-all; }
.group-val.empty { color:var(--text-3); font-style:italic; }
.group-key.named::before { content:''; }
.match-empty { font-size:0.82rem; color:var(--text-3); text-align:center; padding:26px 10px; line-height:1.7; }
.match-empty.err { color:var(--err); }

.rep-input {
  width:100%; padding:13px 15px; font-family:inherit; font-size:0.92rem; font-weight:500;
  background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-2);
  color:var(--text-strong); outline:none; transition:all var(--t1) var(--ease);
}
.rep-input:focus { border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-alpha); }
.rep-out-head { display:flex; align-items:center; justify-content:space-between; margin:16px 0 8px; }
.rep-out-head span { font-size:0.68rem; font-weight:700; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-3); }
.rep-output {
  width:100%; min-height:110px; padding:14px 16px;
  font-family:inherit; font-size:0.9rem; line-height:1.7; color:var(--text-strong);
  background:var(--surface-2); border:var(--bd) solid var(--border); border-radius:var(--r-2);
  white-space:pre-wrap; word-break:break-word;
}
.rep-output.empty { color:var(--text-3); }

.copy-btn {
  display:inline-flex; align-items:center; gap:4px;
  font-family:inherit; font-size:0.66rem; font-weight:700; color:var(--text-3);
  background:transparent; border:var(--bd) solid var(--border-2); border-radius:var(--r-1);
  padding:5px 9px; cursor:pointer; transition:all var(--t1) var(--ease);
}
.copy-btn:hover { color:var(--primary); border-color:var(--primary); }
.copy-btn.done { color:var(--ok); border-color:var(--ok); }
.copy-btn svg { width:12px; height:12px; }

/* ─── 안내 노트 ─── */
.note {
  font-size:0.77rem; color:var(--text-3); line-height:1.7;
  background:var(--surface); border:var(--bd) solid var(--border);
  border-left:3px solid var(--primary-alpha); border-radius:var(--r-2);
  padding:13px 15px; margin-bottom:16px; word-break:keep-all;
}
.note::before { content:'/* '; color:var(--primary); font-weight:700; }
.note::after { content:' */'; color:var(--primary); font-weight:700; }
.note b { color:var(--text-2); font-weight:700; }

/* ─── TRUST (에디터 상태바) ─── */
.trust-bar {
  width:100%; max-width:var(--maxw); margin:30px auto 0; padding:12px 16px;
  border:var(--bd) solid var(--border); border-radius:var(--r-3); background:var(--surface-2);
  display:flex; flex-wrap:wrap; gap:12px 26px;
}
.trust-item { display:inline-flex; align-items:center; gap:8px; font-size:0.78rem; font-weight:500; color:var(--text-3); }
.trust-item svg { width:15px; height:15px; color:var(--ok); }

/* ─── 보조/콘텐츠 페이지 ─── */
.title-bar { width:100%; max-width:760px; margin:0 auto; display:flex; align-items:center; justify-content:space-between; padding:22px 0 4px; }
.title-bar__home {
  display:inline-flex; align-items:center; gap:5px; text-decoration:none; color:var(--text-2);
  font-size:0.8rem; font-weight:500; padding:6px 11px;
  border:var(--bd) solid var(--border); border-radius:var(--r-1); background:var(--surface-2);
  transition:all var(--t1) var(--ease);
}
.title-bar__home:hover { color:var(--primary); border-color:var(--primary); }
.title-bar__cat {
  font-size:0.62rem; font-weight:700; letter-spacing:0.06em; text-transform:uppercase; color:var(--primary);
  background:var(--surface-2); border:var(--bd) solid var(--primary-alpha); border-bottom:2px solid var(--primary);
  padding:5px 11px; border-radius:var(--r-1) var(--r-1) 0 0;
}
.title-bar__cat::before { content:'\25CF '; color:var(--accent); font-size:0.8em; }
.page-container { width:100%; max-width:760px; margin:0 auto; display:flex; flex-direction:column; }
.page-header { text-align:left; margin:16px 0 22px; }
.page-title { font-size:1.55rem; font-weight:700; color:var(--text-strong); letter-spacing:-0.02em; margin-bottom:8px; }
.page-sub { font-size:0.85rem; color:var(--text-2); }
.page-sub::before { content:'// '; color:var(--text-3); }

/* about 주요기능/사용법 */
.about-body { font-size:0.9rem; line-height:1.85; color:var(--text); }
.about-body p { margin-bottom:14px; }
.about-body p b { color:var(--text-strong); }
.sub-head { font-size:1.05rem; font-weight:700; color:var(--text-strong); margin:26px 0 14px; padding-left:12px; border-left:3px solid var(--primary); }
.feat-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
@media (max-width:600px){ .feat-grid { grid-template-columns:1fr; } }
.feat-card { background:var(--surface); border:var(--bd) solid var(--border); border-radius:var(--r-3); padding:16px; }
.feat-t { font-size:0.9rem; font-weight:700; color:var(--text-strong); margin-bottom:6px; }
.feat-t::before { content:'fn '; color:var(--accent); font-weight:500; }
.feat-d { font-size:0.8rem; color:var(--text-3); line-height:1.6; word-break:keep-all; }
.how-list { list-style:none; counter-reset:step; display:flex; flex-direction:column; gap:10px; }
.how-list li { position:relative; padding-left:34px; font-size:0.86rem; color:var(--text-2); line-height:1.6; counter-increment:step; }
.how-list li::before {
  content:counter(step); position:absolute; left:0; top:0;
  width:24px; height:24px; display:inline-flex; align-items:center; justify-content:center;
  font-size:0.72rem; font-weight:700; color:var(--primary);
  background:var(--surface-2); border:var(--bd) solid var(--primary-alpha); border-radius:var(--r-1);
}

/* FAQ */
.faq { width:100%; max-width:760px; margin:12px auto 0; }
.faq-item { border-bottom:var(--bd) solid var(--border); padding:16px 2px; }
.faq-q { font-size:0.9rem; font-weight:700; color:var(--text-strong); margin-bottom:7px; }
.faq-q::before { content:'Q '; color:var(--primary); }
.faq-a { font-size:0.83rem; color:var(--text-2); line-height:1.7; word-break:keep-all; }

/* ─── 치트시트 ─── */
.cheat-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
@media (max-width:640px){ .cheat-grid { grid-template-columns:1fr; } }
.cheat-col { background:var(--surface); border:var(--bd) solid var(--border); border-radius:var(--r-3); padding:16px 18px; }
.cheat-col-title { font-size:0.7rem; font-weight:700; letter-spacing:0.05em; text-transform:uppercase; color:var(--primary); margin-bottom:10px; }
.cheat-col-title::before { content:'# '; color:var(--text-3); }
.cheat-item { display:flex; align-items:baseline; gap:10px; padding:5px 0; border-bottom:var(--bd) solid var(--border-soft); }
.cheat-item:last-child { border-bottom:none; }
.cheat-tok { font-size:0.82rem; font-weight:700; color:var(--cyan); white-space:nowrap; background:var(--surface-2); border:var(--bd) solid var(--border); border-radius:var(--r-1); padding:2px 7px; min-width:40px; text-align:center; }
.cheat-desc { font-size:0.78rem; color:var(--text-2); line-height:1.5; word-break:keep-all; }

/* ─── 패턴 라이브러리 허브 ─── */
.plib-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
@media (min-width:720px){ .plib-grid { grid-template-columns:repeat(3,1fr); } }
.plib-card {
  position:relative; display:flex; flex-direction:column;
  background:var(--surface); border:var(--bd) solid var(--border); border-radius:var(--r-3);
  padding:16px 16px 16px calc(var(--gutter) + 8px); text-decoration:none; overflow:hidden;
  box-shadow:var(--sh-1); transition:transform var(--t2) var(--ease-out), border-color var(--t1) var(--ease), box-shadow var(--t2) var(--ease-out);
}
.plib-card::before { content:''; position:absolute; left:0; top:0; bottom:0; width:var(--gutter); background:var(--surface-3); border-right:var(--bd) solid var(--border); }
.plib-card:hover { transform:translateY(-3px); border-color:var(--primary); box-shadow:var(--glow); }
.plib-cat { font-size:0.58rem; font-weight:700; letter-spacing:0.05em; text-transform:uppercase; color:var(--accent); margin-bottom:7px; }
.plib-name { font-size:0.98rem; font-weight:700; color:var(--text-strong); margin-bottom:8px; }
.plib-re { font-size:0.74rem; color:var(--cyan); background:var(--surface-2); border:var(--bd) solid var(--border); border-radius:var(--r-1); padding:6px 8px; word-break:break-all; line-height:1.5; margin-bottom:9px; }
.plib-desc { font-size:0.76rem; color:var(--text-3); line-height:1.6; flex:1; word-break:keep-all; }
.plib-arrow { margin-top:12px; font-size:0.74rem; font-weight:700; color:var(--primary); }
.plib-arrow::before { content:'\2192 '; color:var(--text-3); }

/* 카테고리 그룹 헤딩 */
.cat-group { margin-bottom:26px; }
.cat-group-title { font-size:0.9rem; font-weight:700; color:var(--text-strong); margin:0 0 14px; padding-left:12px; border-left:3px solid var(--accent); }

/* ─── 패턴 상세 ─── */
.pat-kicker { font-size:0.66rem; font-weight:700; letter-spacing:0.06em; text-transform:uppercase; color:var(--accent); margin-bottom:8px; }
.code-block {
  position:relative; display:flex; align-items:center; gap:10px;
  background:var(--surface); border:var(--bd) solid var(--border-2); border-radius:var(--r-2);
  padding:14px 14px 14px 16px; margin-bottom:8px;
}
.code-block .cb-re { flex:1; font-size:0.98rem; font-weight:600; color:var(--cyan); word-break:break-all; line-height:1.5; }
.code-block .cb-slash { color:var(--accent); font-weight:700; }
.meta-row { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:18px; }
.meta-chip { font-size:0.7rem; font-weight:600; color:var(--text-2); background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1); padding:5px 10px; }
.meta-chip b { color:var(--primary); }
.detail-label { font-size:0.7rem; font-weight:700; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-3); margin:20px 0 9px; }
.detail-label::before { content:'\25B8 '; color:var(--primary); }
.detail-text { font-size:0.88rem; color:var(--text); line-height:1.8; word-break:keep-all; }
.ex-list { display:flex; flex-direction:column; gap:6px; }
.ex-item { font-size:0.84rem; color:var(--text-strong); background:var(--surface-2); border:var(--bd) solid var(--border); border-left:2px solid var(--ok); border-radius:var(--r-1); padding:8px 11px; word-break:break-all; }
.sample-block { font-size:0.85rem; color:var(--text-2); background:var(--surface-2); border:var(--bd) solid var(--border); border-radius:var(--r-2); padding:12px 14px; line-height:1.7; word-break:break-word; white-space:pre-wrap; }
.try-btn {
  display:inline-flex; align-items:center; gap:8px; margin-top:20px;
  font-family:inherit; font-size:0.86rem; font-weight:700; color:#fff;
  background:var(--grad); border:none; border-radius:var(--r-2); padding:13px 20px;
  text-decoration:none; box-shadow:0 6px 18px var(--primary-glow); transition:all var(--t1) var(--ease);
}
[data-theme="light"] .try-btn { color:#fff; }
.try-btn::before { content:'\25B6 '; opacity:.85; }
.try-btn:hover { transform:translateY(-2px); box-shadow:0 10px 26px var(--primary-glow); }
.related-row { display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; }
.related-chip { font-size:0.76rem; font-weight:600; color:var(--text-2); text-decoration:none; background:var(--surface-2); border:var(--bd) solid var(--border-2); border-radius:var(--r-1); padding:7px 12px; transition:all var(--t1) var(--ease); }
.related-chip:hover { color:var(--primary); border-color:var(--primary); }

/* ─── 가이드 ─── */
.guide-list { display:flex; flex-direction:column; gap:12px; }
.guide-card {
  display:block; background:var(--surface); border:var(--bd) solid var(--border); border-radius:var(--r-3);
  padding:18px 20px; text-decoration:none; transition:transform var(--t2) var(--ease-out), border-color var(--t1) var(--ease);
}
.guide-card:hover { transform:translateY(-2px); border-color:var(--primary); }
.guide-card-t { font-size:1.0rem; font-weight:700; color:var(--text-strong); margin-bottom:7px; }
.guide-card-t::before { content:'\2192 '; color:var(--primary); }
.guide-card-d { font-size:0.82rem; color:var(--text-3); line-height:1.6; word-break:keep-all; }
.article { font-size:0.92rem; line-height:1.9; color:var(--text); }
.article p { margin-bottom:18px; word-break:keep-all; }
.article p b { color:var(--text-strong); font-weight:700; }
.article .lead { font-size:0.98rem; color:var(--text-2); margin-bottom:24px; padding:14px 16px; background:var(--surface-2); border:var(--bd) solid var(--border); border-left:3px solid var(--accent); border-radius:var(--r-2); }

/* ─── AD ─── */
/* 사이즈별 행 분리(architecture.md §4-2): 서로 다른 사이즈를 같은 행에 섞지 않는다.
   .ad-grid=행 세로 스택, .ad-row=같은 사이즈끼리 한 줄(컨테이너 폭이 줄당 개수 제한). */
.ad-grid { display:flex; flex-direction:column; align-items:center; gap:14px; width:100%; margin-top:34px; }
.ad-row { display:flex; flex-wrap:wrap; justify-content:center; gap:12px; width:100%; }
.ad-cell { min-height:50px; }

/* ─── FOOTER ─── */
.site-footer {
  width:100%; max-width:var(--maxw); margin:36px auto 0; padding:22px 4px;
  border-top:var(--bd) solid var(--border); text-align:left;
  display:flex; flex-wrap:wrap; gap:6px 0; align-items:center;
}
.site-footer a { color:var(--text-3); font-size:0.8rem; text-decoration:none; transition:color var(--t1) var(--ease); }
.site-footer a:hover { color:var(--primary); }
.footer-divider { color:var(--border-2); margin:0 10px; }
.sr-title { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }

/* ─── ANIMATIONS ─── */
.animate-fade-in { animation:fadeIn .5s var(--ease-out) both; }
.animate-slide-up { animation:slideUp .5s var(--ease-out) both; }
@keyframes fadeIn { from{opacity:0;} to{opacity:1;} }
@keyframes slideUp { from{opacity:0; transform:translateY(16px);} to{opacity:1; transform:translateY(0);} }

@media (max-width:480px){
  body { padding:0 14px 60px; }
  .hero { margin-top:26px; }
  .panel-body { padding:16px 12px 16px calc(var(--gutter) + 4px); }
  :root { --gutter:30px; }
}