/* idomoa.com common styles */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

/* ===== Theme System ===== */
:root,[data-theme="light"]{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-rgb:37,99,235;
  --bg:#f8fafc;
  --card:#ffffff;
  --text:#1e293b;
  --text-light:#64748b;
  --border:#e2e8f0;
  --input-bg:#ffffff;
  --shadow:0 1px 3px rgba(0,0,0,.1);
}

[data-theme="dark"]{
  --primary:#60a5fa;
  --primary-dark:#3b82f6;
  --primary-rgb:96,165,250;
  --bg:#0f172a;
  --card:#1e293b;
  --text:#e2e8f0;
  --text-light:#94a3b8;
  --border:#334155;
  --input-bg:#1e293b;
  --shadow:0 1px 3px rgba(0,0,0,.4);
}

[data-theme="navy"]{
  --primary:#6366f1;
  --primary-dark:#4f46e5;
  --primary-rgb:99,102,241;
  --bg:#0c1222;
  --card:#162032;
  --text:#d1d5db;
  --text-light:#9ca3af;
  --border:#2d3a50;
  --input-bg:#162032;
  --shadow:0 1px 3px rgba(0,0,0,.4);
}

[data-theme="green"]{
  --primary:#16a34a;
  --primary-dark:#15803d;
  --primary-rgb:22,163,74;
  --bg:#f0fdf4;
  --card:#ffffff;
  --text:#14532d;
  --text-light:#4b7c5e;
  --border:#bbf7d0;
  --input-bg:#ffffff;
  --shadow:0 1px 3px rgba(0,0,0,.08);
}

[data-theme="warm"]{
  --primary:#ea580c;
  --primary-dark:#c2410c;
  --primary-rgb:234,88,12;
  --bg:#fffbeb;
  --card:#ffffff;
  --text:#451a03;
  --text-light:#92400e;
  --border:#fde68a;
  --input-bg:#ffffff;
  --shadow:0 1px 3px rgba(0,0,0,.08);
}

[data-theme="purple"]{
  --primary:#9333ea;
  --primary-dark:#7e22ce;
  --primary-rgb:147,51,234;
  --bg:#faf5ff;
  --card:#ffffff;
  --text:#3b0764;
  --text-light:#7e22ce;
  --border:#e9d5ff;
  --input-bg:#ffffff;
  --shadow:0 1px 3px rgba(0,0,0,.08);
}

[data-theme="rose"]{
  --primary:#e11d48;
  --primary-dark:#be123c;
  --primary-rgb:225,29,72;
  --bg:#fff1f2;
  --card:#ffffff;
  --text:#4c0519;
  --text-light:#9f1239;
  --border:#fecdd3;
  --input-bg:#ffffff;
  --shadow:0 1px 3px rgba(0,0,0,.08);
}

:root{
  --radius:12px;
  --max-width:720px;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans KR',sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  transition:background .3s,color .3s;
}

/* Header */
.site-header{
  background:var(--primary);
  border-bottom:1px solid var(--primary-dark);
  padding:12px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  position:relative;
}
.site-header .logo{
  text-decoration:none;
  color:#fff;
  font-weight:700;
  font-size:1.25rem;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.site-header .logo::before{
  content:'';
  display:inline-block;
  width:28px;height:28px;
  background:url('/assets/icons/icon-192.svg') center/contain no-repeat;
  border-radius:6px;
  flex-shrink:0;
}
.header-right{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.site-header .home-btn{
  display:inline-flex;
  align-items:center;
  gap:4px;
  text-decoration:none;
  color:#fff;
  font-size:.9rem;
  font-weight:500;
  background:rgba(255,255,255,.15);
  padding:6px 14px;
  border-radius:6px;
  transition:background .2s;
}
.site-header .home-btn:hover{
  background:rgba(255,255,255,.3);
}

/* Theme switcher */
.theme-toggle{
  position:relative;
}
.theme-btn{
  background:rgba(255,255,255,.15);
  border:none;
  color:#fff;
  width:36px;height:36px;
  border-radius:50%;
  cursor:pointer;
  font-size:1.1rem;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s;
  padding:0;
}
.theme-btn:hover{
  background:rgba(255,255,255,.3);
}
.theme-dropdown{
  display:none;
  position:absolute;
  right:0;top:44px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:10px;
  box-shadow:0 8px 24px rgba(0,0,0,.15);
  padding:8px;
  z-index:1000;
  min-width:180px;
}
.theme-dropdown.show{display:block}
.theme-dropdown-title{
  font-size:.75rem;
  font-weight:700;
  color:var(--text-light);
  padding:4px 8px 8px;
  text-transform:uppercase;
  letter-spacing:1px;
}
.theme-option{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 10px;
  border-radius:6px;
  cursor:pointer;
  font-size:.85rem;
  font-weight:500;
  color:var(--text);
  transition:background .15s;
  border:none;
  background:none;
  width:100%;
  text-align:left;
}
.theme-option:hover{background:var(--bg)}
.theme-option.active{background:var(--bg);font-weight:700}
.theme-swatch{
  width:20px;height:20px;
  border-radius:50%;
  border:2px solid var(--border);
  flex-shrink:0;
}

/* Sidebar */
.sidebar-toggle{
  background:rgba(255,255,255,.15);border:none;color:#fff;
  width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1.2rem;
  display:flex;align-items:center;justify-content:center;padding:0;transition:background .2s;
}
.sidebar-toggle:hover{background:rgba(255,255,255,.3)}
.sidebar{
  position:fixed;top:0;left:-280px;width:280px;height:100vh;
  background:var(--card);border-right:1px solid var(--border);
  overflow-y:auto;z-index:2000;transition:left .3s;
  box-shadow:2px 0 12px rgba(0,0,0,.1);
  padding-bottom:80px;
}
.sidebar.open{left:0}
.sidebar-overlay{
  display:none;position:fixed;top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,.4);z-index:1999;
}
.sidebar-overlay.show{display:block}
.sidebar-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--border);
  position:sticky;top:0;background:var(--card);z-index:1;
}
.sidebar-header h3{font-size:1rem;color:var(--text)}
.sidebar-header a{text-decoration:none;color:var(--primary);font-weight:700;font-size:1.1rem;display:inline-flex;align-items:center;gap:6px}
.sidebar-header a::before{content:'';display:inline-block;width:24px;height:24px;background:url('/assets/icons/icon-192.svg') center/contain no-repeat;border-radius:5px;flex-shrink:0}
.sidebar-home{display:flex;align-items:center;gap:8px;padding:10px 20px;text-decoration:none;color:var(--text);font-weight:600;font-size:.9rem;border-bottom:1px solid var(--border);transition:background .15s}
.sidebar-home:hover{background:var(--bg)}
.sidebar-home-label{font-size:.8rem;color:var(--text-light);font-weight:500}
.sidebar-home svg{flex-shrink:0}
.sidebar-close{
  background:none;border:none;font-size:1.3rem;cursor:pointer;color:var(--text-light);padding:4px;
}
.sidebar-section{
  padding:12px 20px 6px;font-size:.7rem;font-weight:800;color:var(--primary);
  text-transform:uppercase;letter-spacing:1px;border-top:2px solid var(--border);
  margin-top:4px;user-select:none;
}
.sidebar-section:first-child{border-top:none;margin-top:0}
.sidebar-cat{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 20px;font-size:.8rem;font-weight:700;color:var(--text-light);
  cursor:pointer;transition:background .15s;border:none;background:none;width:100%;
  text-align:left;margin:0;border-top:1px solid var(--border);
}
.sidebar-cat:first-of-type{border-top:none}
.sidebar-cat:hover{background:var(--bg);color:var(--text)}
.sidebar-cat .cat-arrow{
  font-size:.6rem;transition:transform .2s;color:var(--text-light);
}
.sidebar-cat.open .cat-arrow{transform:rotate(90deg)}
.sidebar-cat .cat-count{
  font-size:.65rem;background:var(--border);color:var(--text-light);
  padding:1px 6px;border-radius:10px;margin-left:6px;font-weight:400;
}
.sidebar-group{
  max-height:0;overflow:hidden;transition:max-height .25s ease-out;
}
.sidebar-group.open{max-height:2000px;transition:max-height .4s ease-in}
.sidebar-link{
  display:flex;align-items:center;gap:10px;padding:8px 20px 8px 28px;
  text-decoration:none;color:var(--text);font-size:.85rem;
  transition:background .15s;border-left:3px solid transparent;
}
.sidebar-link:hover{background:var(--bg)}
.sidebar-link.active{background:rgba(var(--primary-rgb),.08);border-left-color:var(--primary);color:var(--primary);font-weight:600}
.sidebar-link .sl-icon{font-size:1rem;width:22px;text-align:center;flex-shrink:0}
.sidebar-link .sl-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-search{padding:12px 16px;position:sticky;top:53px;background:var(--card);z-index:1}
.sidebar-search input{
  width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:6px;
  font-size:.85rem;background:var(--input-bg);color:var(--text);margin:0;
}

/* Sidebar collapse toggle button */
.sidebar-collapse-btn{
  display:none;background:none;border:none;color:var(--text-light);
  cursor:pointer;padding:6px;font-size:1rem;transition:color .2s,transform .3s;
  flex-shrink:0;
}
.sidebar-collapse-btn:hover{color:var(--primary);background:transparent}
.sidebar.collapsed .sidebar-collapse-btn{transform:rotate(180deg)}

/* Expand button - visible only when collapsed */
.sidebar-expand-btn{
  display:none;position:sticky;bottom:0;
  background:var(--card);border-top:1px solid var(--border);
  text-align:center;padding:12px 0;cursor:pointer;
  color:var(--text-light);font-size:1rem;transition:color .2s,background .2s;
}
.sidebar-expand-btn:hover{color:var(--primary);background:var(--bg)}
.sidebar.collapsed .sidebar-expand-btn{display:block}
.sidebar-expand-top{position:static;border-top:none;border-bottom:1px solid var(--border)}

/* Collapsed sidebar styles */
.sidebar.collapsed .sidebar-header h3 a{font-size:0;gap:0}
.sidebar.collapsed .sidebar-header h3 a::before{width:32px;height:32px;border-radius:7px}
.sidebar.collapsed .sidebar-header h3 a::after{display:none}
.sidebar.collapsed .sidebar-header{padding:12px 10px;justify-content:center}
.sidebar.collapsed .sidebar-collapse-btn{display:none}
.sidebar.collapsed .sidebar-close{display:none}
.sidebar.collapsed .sidebar-home{padding:10px 0;justify-content:center}
.sidebar.collapsed .sidebar-home-label{display:none}
.sidebar.collapsed .sidebar-search{display:none}
.sidebar.collapsed .sidebar-section{padding:8px 0;text-align:center;font-size:.6rem;letter-spacing:0;border-top:2px solid var(--border)}
.sidebar.collapsed .sidebar-cat{display:none}
.sidebar.collapsed .sidebar-group{max-height:2000px!important}
.sidebar.collapsed .sidebar-group.open,.sidebar.collapsed .sidebar-group{transition:none}
.sidebar.collapsed .sidebar-link{padding:8px 0;justify-content:center;border-left:none}
.sidebar.collapsed .sidebar-link .sl-text{display:none}
.sidebar.collapsed .sidebar-link .sl-icon{width:auto;font-size:1.1rem}
.sidebar.collapsed .sidebar-link.active{background:rgba(var(--primary-rgb),.12);border-radius:6px;margin:1px 6px}

/* Sidebar tooltip (appended to body via JS) */
.sidebar-tooltip{
  position:fixed;
  background:var(--text);color:var(--bg);
  padding:5px 12px;border-radius:6px;font-size:.78rem;font-weight:500;
  white-space:nowrap;pointer-events:none;
  z-index:9999;opacity:0;transition:opacity .15s;
}
.sidebar-tooltip.show{opacity:1}

/* Layout with sidebar - desktop pinned sidebar */
@media(min-width:1100px){
  .sidebar{left:0;box-shadow:none;position:fixed;transition:width .3s,left .3s}
  .sidebar-overlay{display:none!important}
  .sidebar-toggle{display:none}
  .sidebar-collapse-btn{display:block}
  .site-header{padding-left:300px;transition:padding-left .3s}
  .page-wrapper{margin-left:280px;transition:margin-left .3s}
  /* Collapsed layout */
  .sidebar.collapsed{width:60px}
  .sidebar.collapsed~.sidebar-overlay{display:none!important}
  .sidebar.collapsed~div .site-header,
  body.sidebar-collapsed .site-header{padding-left:80px}
  body.sidebar-collapsed .page-wrapper{margin-left:60px}
}

/* Main */
main{
  flex:1;
  width:100%;
  max-width:var(--max-width);
  margin:0 auto;
  padding:24px 16px 48px;
}

h1{
  font-size:1.75rem;
  margin-bottom:8px;
  line-height:1.3;
}
.tool-desc{
  color:var(--text-light);
  margin-bottom:24px;
  font-size:.95rem;
}

/* Scroll to top */
.scroll-top{
  position:fixed;bottom:24px;right:24px;
  width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;border:none;
  font-size:1.2rem;cursor:pointer;
  display:none;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(0,0,0,.2);
  z-index:1000;transition:opacity .3s,transform .3s;
  opacity:0;transform:translateY(10px);
}
.scroll-top.show{display:flex;opacity:1;transform:translateY(0)}
.scroll-top:hover{transform:translateY(-2px)}

/* Prev/Next Navigation */
.page-nav{display:flex;gap:12px;margin:28px 0 8px;align-items:stretch}
.page-nav-btn{flex:1;display:flex;align-items:center;gap:10px;padding:14px 16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;color:var(--text);transition:border-color .2s,box-shadow .2s,transform .15s;overflow:hidden;min-width:0;cursor:pointer;font-family:inherit;font-size:inherit}
.page-nav-btn:hover{border-color:var(--primary);box-shadow:0 2px 12px rgba(var(--primary-rgb),.15);transform:translateY(-1px)}
.page-nav-btn.nav-prev{justify-content:flex-start}
.page-nav-btn.nav-next{justify-content:flex-end;text-align:right}
.page-nav-arrow{font-size:1.3rem;flex-shrink:0;color:var(--primary);font-weight:700;line-height:1}
.page-nav-info{min-width:0;overflow:hidden}
.page-nav-label{display:block;font-size:.7rem;color:var(--text-light);margin-bottom:2px;text-transform:uppercase;letter-spacing:.5px}
.page-nav-title{display:block;font-size:.88rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page-nav-spacer{flex:1}
@media(max-width:480px){
  .page-nav{gap:8px}
  .page-nav-btn{padding:12px}
  .page-nav-title{font-size:.8rem}
}

/* Card */
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  margin-bottom:24px;
  box-shadow:var(--shadow);
  transition:background .3s,border-color .3s;
}

/* Form elements */
label{
  display:block;
  font-weight:600;
  margin-bottom:6px;
  font-size:.9rem;
}
input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea{
  width:100%;
  padding:10px 14px;
  border:1px solid var(--border);
  border-radius:8px;
  font-size:1rem;
  margin-bottom:16px;
  transition:border .2s;
  background:var(--input-bg);
  color:var(--text);
}
input:focus,select:focus,textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(var(--primary-rgb),.15);
}

button,.btn{
  display:inline-block;
  padding:12px 28px;
  background:var(--primary);
  color:#fff;
  border:none;
  border-radius:8px;
  font-size:1rem;
  font-weight:600;
  cursor:pointer;
  transition:background .2s;
  text-decoration:none;
}
button:hover,.btn:hover{
  background:var(--primary-dark);
}

/* Result */
.result-box{
  background:rgba(var(--primary-rgb),.08);
  border:1px solid rgba(var(--primary-rgb),.25);
  border-radius:var(--radius);
  padding:20px;
  margin-top:16px;
  font-size:1.1rem;
  min-height:48px;
}
.result-box .label{
  font-size:.85rem;
  color:var(--text-light);
  margin-bottom:4px;
}
.result-box .value{
  font-size:1.5rem;
  font-weight:700;
  color:var(--primary);
}

/* Section headings */
.section-title{
  font-size:1.2rem;
  font-weight:700;
  margin:32px 0 12px;
  padding-bottom:8px;
  border-bottom:2px solid var(--primary);
}

/* FAQ */
.faq-item{
  margin-bottom:16px;
}
.faq-item h3{
  font-size:1rem;
  margin-bottom:4px;
}
.faq-item p{
  color:var(--text-light);
  font-size:.9rem;
}

/* Related tools */
.related-tools{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:12px;
}
.related-tools a{
  display:block;
  padding:14px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:8px;
  text-decoration:none;
  color:var(--text);
  font-weight:500;
  transition:border-color .2s;
}
.related-tools a:hover{
  border-color:var(--primary);
  color:var(--primary);
}

/* Tool grid (homepage) */
.tool-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:16px;
  margin-top:24px;
}
.tool-card{
  display:block;
  padding:20px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  text-decoration:none;
  color:var(--text);
  box-shadow:var(--shadow);
  transition:transform .15s,box-shadow .15s;
}
.tool-card:hover{
  transform:translateY(-2px);
  box-shadow:0 4px 12px rgba(0,0,0,.1);
}
.tool-card{display:flex;align-items:flex-start;gap:14px}
.tool-card .icon{
  font-size:2rem;
  flex-shrink:0;
  line-height:1;
  margin-top:2px;
}
.tool-card .card-body{flex:1;min-width:0}
.tool-card h2{
  font-size:1.05rem;
  margin-bottom:4px;
}
.tool-card p{
  font-size:.85rem;
  color:var(--text-light);
}

/* Footer */
.site-footer{
  text-align:center;
  padding:24px 16px;
  font-size:.85rem;
  color:var(--text-light);
  border-top:1px solid var(--border);
  background:var(--card);
  transition:background .3s,border-color .3s;
}
.footer-links{
  display:flex;justify-content:center;gap:16px;flex-wrap:wrap;
  margin-bottom:8px;
}
.footer-links a{
  color:var(--text-light);text-decoration:none;font-size:.82rem;
  transition:color .2s;
}
.footer-links a:hover{color:var(--primary)}

/* Responsive */
@media(max-width:480px){
  h1{font-size:1.4rem}
  .card{padding:16px}
  main{padding:16px 12px 32px}
}

/* Utility */
.mb-8{margin-bottom:8px}
.mb-16{margin-bottom:16px}
.mb-24{margin-bottom:24px}
.text-center{text-align:center}
.flex-row{display:flex;gap:12px;flex-wrap:wrap}
.flex-row>*{flex:1;min-width:140px}