/* ── YouTube Chapter Generator ── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[x-cloak] { display: none !important; }

:root {
  --accent:  #ef4444;
  --agrad:   linear-gradient(135deg,#ef4444,#dc2626);
  --bg:      #09090f;
  --card:    #111119;
  --card2:   #16161f;
  --text:    #f1f5f9;
  --text2:   #94a3b8;
  --faint:   #64748b;
  --border:  #1c1c2a;
  --border2: #252535;
  --input:   #0d0d17;
}

body { background:var(--bg); color:var(--text); font-family:system-ui,-apple-system,sans-serif; line-height:1.6; min-height:100vh; }

/* ── HEADER ── */
.site-header { position:sticky; top:0; z-index:100; background:rgba(9,9,15,.88); backdrop-filter:blur(12px); border-bottom:1px solid var(--border); }
.header-inner { max-width:1240px; margin:0 auto; padding:0 20px; display:flex; align-items:center; justify-content:space-between; height:56px; }
.logo { display:flex; align-items:center; gap:10px; text-decoration:none; }
.logo-icon { width:32px; height:32px; flex-shrink:0; }
.logo-text { font-size:.95rem; font-weight:800; background:var(--agrad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.nav-links { display:flex; gap:24px; }
.nav-links a { color:var(--text2); text-decoration:none; font-size:.87rem; font-weight:500; transition:color .15s; }
.nav-links a:hover { color:var(--text); }

/* ── HERO ── */
.hero { text-align:center; padding:48px 20px 32px; }
.hero-badge { display:inline-flex; align-items:center; gap:6px; background:rgba(239,68,68,.1); border:1px solid rgba(239,68,68,.25); color:#fca5a5; border-radius:999px; padding:4px 14px; font-size:.78rem; font-weight:600; margin-bottom:18px; }
.hero h1 { font-size:clamp(2rem,5vw,2.8rem); font-weight:900; letter-spacing:-.03em; margin-bottom:12px; }
.g { background:var(--agrad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { color:var(--text2); font-size:1rem; max-width:600px; margin:0 auto; }

/* ── PAGE WRAP ── */
.page-wrap { max-width:1100px; margin:0 auto; padding:0 20px 80px; }

/* ── TOOL CARD ── */
.tool-card { background:var(--card); border:1px solid var(--border); border-radius:16px; overflow:hidden; margin-bottom:24px; }

/* ── TABS ── */
.tool-tabs { display:flex; gap:2px; padding:14px 18px 0; border-bottom:1px solid var(--border); }
.tool-tab {
  padding:8px 20px; font-size:.84rem; font-weight:700; border:none;
  background:transparent; color:var(--faint); cursor:pointer;
  border-bottom:2px solid transparent; margin-bottom:-1px;
  transition:all .15s; display:flex; align-items:center; gap:7px;
}
.tool-tab svg { width:14px; height:14px; }
.tool-tab:hover { color:var(--text2); }
.tool-tab.active { color:var(--accent); border-bottom-color:var(--accent); }

/* ── LAYOUT ── */
.yc-layout { display:grid; grid-template-columns:400px 1fr; }
.yc-panel { padding:20px 22px; }
.yc-panel + .yc-panel { border-left:1px solid var(--border); }

/* ── PANEL HEADER ── */
.panel-head { display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; gap:8px; }
.panel-title { font-size:.78rem; font-weight:800; color:var(--text2); text-transform:uppercase; letter-spacing:.07em; }
.panel-acts { display:flex; gap:6px; }

/* ── CHAPTER ROWS ── */
.ch-list { display:flex; flex-direction:column; gap:7px; margin-bottom:12px; }
.ch-row {
  display:grid;
  grid-template-columns:26px 84px 1fr 28px;
  gap:6px; align-items:center;
}
.ch-num {
  width:26px; height:26px; border-radius:50%;
  background:rgba(239,68,68,.1); border:1px solid rgba(239,68,68,.2);
  color:#fca5a5; font-size:.68rem; font-weight:800;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
  font-variant-numeric:tabular-nums;
}
.ch-time-input, .ch-title-input {
  width:100%; padding:7px 9px;
  background:var(--input); border:1px solid var(--border2); border-radius:8px;
  color:var(--text); font-size:.84rem; outline:none; transition:border-color .15s;
}
.ch-time-input { font-family:monospace; text-align:center; letter-spacing:.03em; }
.ch-time-input:focus, .ch-title-input:focus { border-color:var(--accent); }
.ch-time-input.invalid { border-color:#f43f5e; background:rgba(244,63,94,.04); }
.ch-time-input::placeholder, .ch-title-input::placeholder { color:var(--faint); }
.ch-remove {
  width:28px; height:28px; border-radius:6px; border:1px solid var(--border2);
  background:transparent; color:var(--faint); cursor:pointer;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
  transition:all .12s;
}
.ch-remove svg { width:13px; height:13px; }
.ch-remove:hover { border-color:#f43f5e; color:#f43f5e; }
.ch-remove:disabled { opacity:.22; cursor:not-allowed; }

/* ── BUTTONS ── */
.btn {
  display:inline-flex; align-items:center; gap:6px;
  padding:7px 14px; border-radius:8px; font-size:.8rem; font-weight:700;
  border:1px solid var(--border2); background:var(--input); color:var(--text2);
  cursor:pointer; transition:all .12s; white-space:nowrap; line-height:1;
}
.btn svg { width:13px; height:13px; flex-shrink:0; }
.btn:hover:not(:disabled) { border-color:var(--accent); color:var(--text); }
.btn.primary { background:var(--agrad); border-color:transparent; color:#fff; }
.btn.primary:hover { filter:brightness(1.1); }
.btn.done { border-color:#4ade80; color:#4ade80; background:rgba(74,222,128,.08); }
.btn.sm { padding:4px 10px; font-size:.73rem; }
.btn:disabled { opacity:.35; cursor:not-allowed; }
.add-ch-btn { width:100%; justify-content:center; }

/* ── OUTPUT ── */
.output-area {
  width:100%; min-height:200px; max-height:340px;
  padding:14px 16px; resize:vertical;
  background:var(--input); border:1px solid var(--border2); border-radius:10px;
  color:var(--text); font-family:'Fira Code',Consolas,monospace;
  font-size:.84rem; line-height:2; outline:none;
  margin-bottom:10px;
}
.output-area:focus { border-color:var(--accent); }

.output-meta { display:flex; align-items:center; gap:14px; font-size:.74rem; color:var(--faint); margin-bottom:12px; }
.output-meta strong { color:var(--text2); font-variant-numeric:tabular-nums; }

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

/* ── VALIDATION BOX ── */
.val-box { border-radius:10px; overflow:hidden; border:1px solid var(--border2); margin-top:16px; }
.val-head { padding:9px 14px; font-size:.76rem; font-weight:700; display:flex; align-items:center; gap:7px; }
.val-head svg { width:14px; height:14px; flex-shrink:0; }
.val-ok .val-head  { background:rgba(74,222,128,.07); color:#4ade80; }
.val-err .val-head { background:rgba(244,63,94,.07); color:#f43f5e; }
.val-items { padding:8px 14px 12px; display:flex; flex-direction:column; gap:5px; }
.val-item { display:flex; align-items:baseline; gap:7px; font-size:.78rem; color:var(--text2); }
.val-item::before { content:'•'; color:#f43f5e; flex-shrink:0; }

/* ── IMPORT TAB ── */
.import-hint { font-size:.76rem; color:var(--faint); line-height:1.6; margin-bottom:10px; }
.import-hint code { font-family:monospace; background:var(--border); padding:1px 5px; border-radius:4px; color:var(--accent); font-size:.8em; }
.import-textarea {
  width:100%; min-height:280px;
  padding:14px 16px; background:var(--input); border:1px solid var(--border2);
  border-radius:10px; color:var(--text); font-family:monospace;
  font-size:.83rem; line-height:1.75; resize:vertical; outline:none; tab-size:2;
}
.import-textarea:focus { border-color:var(--accent); }
.import-actions { display:flex; gap:8px; margin-top:12px; }

.import-preview-list { display:flex; flex-direction:column; gap:6px; max-height:340px; overflow-y:auto; }
.ip-row {
  display:flex; align-items:center; gap:10px;
  padding:8px 12px; border-radius:8px;
  background:var(--input); border:1px solid var(--border2); font-size:.82rem;
}
.ip-idx { color:var(--faint); font-size:.72rem; font-variant-numeric:tabular-nums; min-width:18px; }
.ip-time { font-family:monospace; color:var(--accent); font-weight:700; flex-shrink:0; min-width:52px; }
.ip-title { color:var(--text2); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.import-none { font-size:.82rem; color:var(--faint); text-align:center; padding:40px 20px; font-style:italic; }
.import-count { font-size:.8rem; color:var(--text2); margin-bottom:12px; font-weight:600; }
.import-count span { color:var(--accent); }

/* ── INFO SECTIONS ── */
.info-sections { display:flex; flex-direction:column; gap:20px; margin-bottom:48px; }
.info-section { background:var(--card); border:1px solid var(--border); border-radius:16px; padding:32px 36px; }
.info-icon-row { display:flex; align-items:center; gap:14px; margin-bottom:14px; }
.info-icon { width:40px; height:40px; border-radius:10px; background:rgba(239,68,68,.1); border:1px solid rgba(239,68,68,.2); display:flex; align-items:center; justify-content:center; flex-shrink:0; color:var(--accent); }
.info-icon svg { width:18px; height:18px; }
.info-section h2 { font-size:1.1rem; font-weight:800; }
.info-body { color:var(--text2); font-size:.9rem; line-height:1.8; }
.info-body p + p { margin-top:10px; }
.info-body ul { padding-left:20px; display:flex; flex-direction:column; gap:6px; }
.info-body strong { color:var(--text); font-weight:700; }
.info-body code { font-family:monospace; font-size:.83em; background:var(--border); padding:1px 5px; border-radius:4px; color:var(--accent); }

/* ── RELATED / BLOG ── */
.related-section { margin-bottom:48px; }
.related-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
.related-header h2 { font-size:1.15rem; font-weight:800; }
.view-all-link { display:inline-flex; align-items:center; gap:4px; font-size:.82rem; font-weight:600; color:var(--accent); text-decoration:none; }
.view-all-link svg { width:14px; height:14px; }
.related-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:14px; }
.related-tool-card { display:flex; flex-direction:column; gap:10px; background:var(--card); border:1px solid var(--border); border-radius:14px; padding:18px; text-decoration:none; color:inherit; transition:border-color .15s,transform .15s; }
.related-tool-card:hover { border-color:var(--accent); transform:translateY(-2px); }
.rt-icon { width:40px; height:40px; border-radius:10px; display:flex; align-items:center; justify-content:center; }
.rt-icon svg { width:20px; height:20px; color:#fff; }
.rt-name { font-size:.9rem; font-weight:700; }
.rt-desc { font-size:.78rem; color:var(--text2); line-height:1.5; flex:1; }
.rt-link { display:inline-flex; align-items:center; gap:3px; font-size:.76rem; font-weight:700; color:var(--accent); }
.rt-link svg { width:12px; height:12px; }
.blog-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:14px; }
.blog-card { display:flex; flex-direction:column; gap:8px; background:var(--card); border:1px solid var(--border); border-radius:14px; padding:20px; text-decoration:none; color:inherit; transition:border-color .15s; }
.blog-card:hover { border-color:var(--accent); }
.blog-cat { display:inline-block; padding:2px 10px; border-radius:999px; font-size:.71rem; font-weight:700; }
.blog-title { font-size:.92rem; font-weight:700; line-height:1.35; }
.blog-excerpt { font-size:.8rem; color:var(--text2); line-height:1.55; flex:1; }
.blog-meta { font-size:.72rem; color:var(--faint); }
.blog-read { display:inline-flex; align-items:center; gap:3px; font-size:.76rem; font-weight:700; color:var(--accent); margin-top:auto; }
.blog-read svg { width:12px; height:12px; }

/* ── FOOTER ── */
.site-footer { background:var(--card); border-top:1px solid var(--border); padding:48px 20px 0; }
.footer-inner { max-width:1240px; margin:0 auto; display:grid; grid-template-columns:1fr auto; gap:40px; padding-bottom:40px; }
.footer-brand { max-width:280px; }
.footer-tagline { font-size:.82rem; color:var(--text2); margin-top:10px; line-height:1.55; }
.footer-nav-wrap { display:flex; gap:48px; }
.footer-col { display:flex; flex-direction:column; gap:8px; }
.footer-col h4 { font-size:.78rem; font-weight:700; color:var(--text2); text-transform:uppercase; letter-spacing:.07em; margin-bottom:12px; }
.footer-col a { font-size:.84rem; color:var(--faint); text-decoration:none; transition:color .15s; }
.footer-col a:hover { color:var(--text); }
.footer-bottom { border-top:1px solid var(--border); padding:16px 0; }
.footer-bottom .inner { max-width:1240px; margin:0 auto; padding:0 20px; display:flex; justify-content:space-between; align-items:center; }
.footer-bottom p { font-size:.78rem; color:var(--faint); }

/* ── REPORT MODAL ── */
.rm-trigger { position:fixed; bottom:24px; right:24px; z-index:200; display:flex; align-items:center; gap:7px; padding:9px 16px; border-radius:999px; background:var(--card); border:1px solid var(--border2); color:var(--faint); font-size:.76rem; font-weight:700; cursor:pointer; transition:all .15s; box-shadow:0 4px 20px rgba(0,0,0,.4); }
.rm-trigger svg { width:14px; height:14px; }
.rm-trigger:hover { border-color:var(--accent); color:var(--text); }
.rm-overlay { position:fixed; inset:0; z-index:300; background:rgba(0,0,0,.6); backdrop-filter:blur(4px); display:flex; align-items:center; justify-content:center; padding:20px; }
.rm-modal { background:var(--card); border:1px solid var(--border2); border-radius:20px; padding:32px; width:100%; max-width:480px; }
.rm-modal h3 { font-size:1.1rem; font-weight:800; margin-bottom:6px; }
.rm-modal p { color:var(--text2); font-size:.85rem; margin-bottom:20px; }
.rm-field { margin-bottom:14px; }
.rm-field label { display:block; font-size:.78rem; font-weight:700; color:var(--text2); margin-bottom:6px; }
.rm-field select, .rm-field textarea, .rm-field input { width:100%; padding:9px 12px; background:var(--input); border:1px solid var(--border2); border-radius:8px; color:var(--text); font-size:.85rem; outline:none; transition:border-color .15s; }
.rm-field select:focus, .rm-field textarea:focus, .rm-field input:focus { border-color:var(--accent); }
.rm-field textarea { resize:vertical; min-height:90px; font-family:inherit; }
.rm-actions { display:flex; gap:10px; justify-content:flex-end; margin-top:20px; }
.rm-btn { padding:8px 20px; border-radius:8px; font-size:.84rem; font-weight:700; cursor:pointer; transition:all .12s; border:1px solid var(--border2); background:var(--input); color:var(--text2); }
.rm-btn.primary { background:var(--agrad); border-color:transparent; color:#fff; }
.rm-btn:hover { border-color:var(--accent); color:var(--text); }
.rm-btn.primary:hover { filter:brightness(1.1); }
.rm-success { text-align:center; padding:20px 0; }
.rm-success svg { width:48px; height:48px; color:#4ade80; margin:0 auto 12px; display:block; }
.rm-success h3 { margin-bottom:8px; }
.rm-success p { margin-bottom:0; }

@media (max-width: 780px) {
  .yc-layout { grid-template-columns: 1fr; }
  .yc-panel + .yc-panel { border-left: none; border-top: 1px solid var(--border); }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-nav-wrap { gap: 32px; }
}