:root{
  --base-background: #121212;

  --primary: #3478EB;
  --focus-primary: #275EC0;
  
  --gray: #3a3a3a;
  --area-gray: #1E1E1E;
  --focus-gray: #2b2b2b;
  --content-gray: #2a2a2a;
  --border-gray: #444;

  --black: #1a1a1a;
  
  --base-text: #e0e0e0;
  --focus-text: #fff;
  --description: #aaaaaa;
  
  --sidebar-w: 250px;
  --topbar-h: 56px;
  --page-gutter:22px;
  --page-max-open: 1160px;
  --page-max-closed: 92vw;
  --page-max-hardcap: 1440px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'SF Pro KR',SF Pro Text,SF Pro Icons,Apple Gothic,HY Gulim,MalgunGothic,HY Dotum,Lexi Gulim,Helvetica Neue,Helvetica,Arial,sans-serif !important;
}
html, body {
  width: 100%;
  height: 100%;
  font-size: 10px;
}
body {
  background-color: var(--base-background);
  color: var(--base-text);
}
/* ────────────────────────────────────────────────────────
  레이아웃
──────────────────────────────────────────────────────── */
.layout{
  min-height:100vh;
  display:block;
}
.main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left 0.3s ease; 
  margin-left: 0;
  position: relative;
}
.page{
  width: 100%;
  justify-content: center;
  padding: 28px var(--page-gutter) 48px;
}
/* ────────────────────────────────────────────────────────
  사이드바
──────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; 
  left: 0; 
  bottom: 0;
  width: var(--sidebar-w);
  background: #171717;
  border-right: 1px solid #2b2b2b;
  padding: 16px 14px;
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 200;
}
.sidebar.open {
  transform: translateX(0);
}
.sidebar.open ~ .main {
  margin-left: var(--sidebar-w);
}
.sidebar .btn-close {
  display: none;
  position: absolute;
  top: 12px;
  right: 12px;
  background: transparent;
  border: none;
  font-size: 2rem;
  color: var(--description);
  cursor: pointer;
  transition: color 0.2s ease;
  --icon-size: 18px;
  --tap: 32px;
}
.sidebar.open .btn-close {
  display: block;
}
.sidebar .btn-close:hover {
  color: var(--focus-text);
}
.sidebar .brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 8px 14px 8px;
  margin-bottom:8px;
  border-bottom:1px solid #242424;
}
.sidebar .brand .logo {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.sidebar .brand .logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}
.sidebar .brand .title{
  display:flex;
  flex-direction:column;
  gap:2px
}
.sidebar .brand .title strong{
  font-size:1.4rem;
  line-height:1
}
.sidebar .brand .title span{
  font-size:1.1rem;
  color:#9e9e9e;
  line-height:1
}
.sidebar .nav-group{
  margin-top:14px;
}
.sidebar .nav-head{
  color:#8f8f8f;
  font-size:1.1rem;
  font-weight:700;
  letter-spacing:.4px;
  padding:8px 8px; 
  text-transform:uppercase;
}
.sidebar .nav{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:4px 4px 10px 4px;
}
.sidebar .nav a{
  display:flex;
  align-items:center;
  gap:10px;
  color: #e0e0e0;
  text-decoration:none;
  font-size:1.3rem;
  padding:10px 10px;
  border-radius:8px;
  transition: background-color .15s ease,color .15s ease;
}
.sidebar .nav a .icon{
  width:20px;
  height:20px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid #3a3a3a;
  border-radius:4px;
  font-size:1.1rem;
  color:#cfcfcf;
}
.sidebar .nav a:hover{
  background:#222
}
.sidebar .nav a.active{
  background:#1f2634;
  color:#fff;
}
.sidebar .nav a.active .icon {
  border-color: var(--primary);
  color: var(--primary);
}
.sidebar .nav a.disabled{
  opacity:.45;
  pointer-events:none
}
.sidebar .nav small{
  margin-left:auto;
  color: #bdbdbd;
  font-size:1.1rem
}
.sidebar:not(.open) ~ .main .page .card.card-lg{
  max-width: min(var(--page-max-closed), var(--page-max-hardcap));
  width: 100%;
  margin: 0 auto;
  border-radius: 12px;
}
.sidebar .sidebar-footer{
  margin-top:12px;
  padding:10px 8px;
  border-top:1px solid #242424;
  color:#9e9e9e;
  font-size:1.1rem;
}
/* ────────────────────────────────────────────────────────
  상단바
──────────────────────────────────────────────────────── */
.topbar{
  position:sticky; 
  top:0; 
  z-index:10;
  display:flex;
  align-items:center;
  gap:12px;
  height:56px;
  padding:0 18px;
  border-bottom:1px solid #1f1f1f;
  background:rgba(18,18,18,.85);
  backdrop-filter:saturate(150%) blur(6px);
}
.topbar .title{
  font-size:1.5rem;
  font-weight:700
}
.topbar .actions{
  margin-left:auto;
  display:flex;
  gap:8px
}
.topbar .btn-open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--base-text);
  border-radius: 6px;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease;
  display: none;
}
.topbar .btn-open svg {
  width: 22px;
  height: 22px;
}
.topbar .btn-open:hover {
  background: var(--content-gray);
}
/* ────────────────────────────────────────────────────────
  버튼
──────────────────────────────────────────────────────── */
.btn{
  border:1px solid var(--gray);
  background:var(--gray);
  color: #eaeaea;
  border-radius:8px;
  height:34px;
  padding:0 12px;
  font-size:1.2rem;
  display:inline-flex;
  align-items:center;
  gap:8px;
  cursor:pointer;
  transition: filter .2s ease, background-color .2s ease, border .2s ease;
}
.btn-lg {
  justify-self: center;
  font-size: 1.3rem;
  font-weight: 500;
  padding: 0 25px;
  height: 40px;
  border-radius: 10px;
}
.btn:hover {
  background: var(--focus-gray);
  border-color: var(--focus-gray);
}
.btn:disabled {
  background-color: #333333;
  border-color: #333333;
  color: #777;  
  opacity: 0.8;
  cursor: not-allowed;
  pointer-events: none;
  filter: none !important;
}
.btn-primary{ 
  background: var(--primary);
  border-color: var(--primary);
  color:#fff; 
}
.btn-primary:hover {
  background: var(--focus-primary);
  border-color: var(--focus-primary)
}
.btn-sm {
  height:30px; 
  padding:0 10px; 
  font-size:1.1rem;
}
/* ────────────────────────────────────────────────────────
    기본 가이드 스타일
──────────────────────────────────────────────────────── */
.instruction {
  margin-bottom: 20px;
}
.instruction-box {
  background-color: var(--content-gray);
  border-radius: 8px;
  border: 1px solid  var(--border-gray);
  margin-bottom: 24px;
  padding:14px 20px 0px 24px;
}
.instruction-box p {
  color: var(--description);
  font-size: 1.1rem;
  line-height: 1.5;
}
.instruction-box .heading {
  color: var(--base-text);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 10px 0 6px;
}
.code-sample {
  background: var(--black);
  border: 1px solid #333;
  border-radius: 8px;
  color: #e6e6e6;
  padding: 10px 10px;
  white-space: pre-wrap;
}
/* ────────────────────────────────────────────────────────
  음성 재생 버튼
──────────────────────────────────────────────────────── */
.play-btn {
  position: relative;
  background-color: var(--gray);
  color: #fff;
  border-radius: 50%;
  border: 1px solid var(--border-gray);
  width: 36px; height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.play-btn:hover {
  background: var(--focus-gray);
  transform: scale(1.03);
}
.play-btn svg {
  width: 12px; height: 12px;
  fill: #fff;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.play-btn.playing svg {
  display: none;
}
.play-btn.playing {
  background: var(--focus-gray);
}
.play-btn.playing::after {
  content: "";
  position: absolute;
  display: block;
  width: 16px;
  height: 12px;
  background: 
    linear-gradient(currentColor 0 0) left/3px 4px no-repeat,
    linear-gradient(currentColor 0 0) center/3px 8px no-repeat,
    linear-gradient(currentColor 0 0) right/3px 6px no-repeat;
  animation: bars 1s ease-in-out infinite;
}
@keyframes bars {
  0%   { background-size: 3px 4px, 3px 8px, 3px 6px; }
  25%  { background-size: 3px 8px, 3px 4px, 3px 10px; }
  50%  { background-size: 3px 6px, 3px 10px, 3px 4px; }
  75%  { background-size: 3px 10px, 3px 6px, 3px 8px; }
  100% { background-size: 3px 4px, 3px 8px, 3px 6px; }
}

/* ────────────────────────────────────────────────────────
  글로벌 모달
──────────────────────────────────────────────────────── */
body.modal-open{
  overflow:hidden;
}

.app-modal-layer[hidden]{
  display:none;
}

.app-modal-layer{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
  background:rgba(8,8,12,0.34);
  backdrop-filter:blur(6px);
  z-index:600;
  opacity:0;
}

.app-modal-layer:not([hidden]){
  animation:modalFadeIn .26s ease forwards;
}

.app-modal-backdrop{
  position:absolute;
  inset:0;
  background:rgba(6,6,8,0.28);
}

.app-modal-panel{
  position:relative;
  width:min(520px, 100%);
  background:var(--area-gray);
  border:none;
  border-radius:12px;
  padding:24px 26px 22px;
  box-shadow:0 24px 48px rgba(0,0,0,0.6);
  display:flex;
  flex-direction:column;
  gap:18px;
  opacity:0;
  transform:translateY(18px) scale(0.97);
}

.app-modal-layer:not([hidden]) .app-modal-panel{
  animation:modalPanelIn .26s cubic-bezier(.18,.57,.3,1) forwards;
}

.app-modal__header{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
}

.app-modal__title{
  font-size:1.6rem;
  font-weight:600;
  color:var(--focus-text);
}

.app-modal__close{
  border:none;
  background:transparent;
  color:var(--description);
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:6px;
  border-radius:8px;
  transition:background-color .18s ease, color .18s ease;
}

.app-modal__close:hover,
.app-modal__close:focus-visible{
  color:var(--focus-text);
  background:var(--focus-gray);
  outline:none;
}

.app-modal__body{
  font-size:1.25rem;
  line-height:1.65;
  color:var(--description);
  display:grid;
  gap:12px;
}

.app-modal__form{
  display:grid;
  gap:18px;
}

.app-modal__field{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.app-modal__field label{
  font-size:1.15rem;
  color:var(--focus-text);
  font-weight:500;
}

.app-modal__field input,
.app-modal__field textarea{
  width:100%;
  padding:10px 12px;
  border-radius:8px;
  border:1px solid var(--focus-gray);
  background:var(--focus-gray);
  color:var(--base-text);
  font-size:1.2rem;
  transition:border-color .18s ease, box-shadow .18s ease;
  resize:vertical;
}

.app-modal__field textarea{
  min-height:120px;
  resize:none;
}

.app-modal__field input:focus,
.app-modal__field textarea:focus{
  outline:none;
  border-color:var(--primary);
}

.app-modal__buttons{
  display:flex;
  justify-content:flex-end;
  gap:10px;
}

.app-modal__buttons .btn{
  min-width:108px;
  justify-content:center;
}

.app-modal__footer{
  display:flex;
  justify-content:flex-end;
  gap:10px;
}

.app-modal__footer[hidden]{
  display:none;
}

.app-modal__message{
  margin:0;
}

@keyframes modalFadeIn{
  from{opacity:0;}
  to{opacity:1;}
}

@keyframes modalPanelIn{
  from{opacity:0; transform:translateY(18px) scale(0.97);}
  to{opacity:1; transform:translateY(0) scale(1);}
}

@media (max-width: 520px){
  .app-modal-layer{
    padding:18px;
  }

  .app-modal-panel{
    padding:20px 18px;
    border-radius:14px;
  }

  .app-modal__title{
    font-size:1.45rem;
  }
}

/* ────────────────────────────────────────────────────────
  글로벌 로딩
──────────────────────────────────────────────────────── */
body.loading-open{
  overflow:hidden;
}
.app-loading-layer[hidden]{
  display:none;
}
.app-loading-layer{
  position:fixed;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
  background:rgba(8,8,12,0.34);
  backdrop-filter:blur(3px);
  z-index:700;
}
.app-loading__backdrop{
  position:absolute;
  inset:0;
  background:rgba(6,6,8,0.32);
}
.app-loading__panel{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  padding:22px 26px;
  border-radius:14px;
  background:rgba(18,20,28,0.82);
  border:1px solid rgba(255,255,255,0.04);
  box-shadow:0 24px 48px rgba(0,0,0,0.55);
  min-width:220px;
}
.app-loading__spinner{
  width:44px;
  height:44px;
  border-radius:50%;
  border:3px solid rgba(255,255,255,0.15);
  border-top-color:var(--primary);
  animation:loaderSpin 0.8s linear infinite;
}
.app-loading__message{
  margin:5px;
  font-size:1.25rem;
  color:var(--focus-text);
  text-align:center;
  letter-spacing:.2px;
  line-height:2;
}

@keyframes loaderSpin{
  to{transform:rotate(360deg);}
}

/* ────────────────────────────────────────────────────────
    기타
──────────────────────────────────────────────────────── */
.hide {
    opacity: 0 !important;
    display: none !important;
}
.show {
    opacity: 1 !important;
}
.disable {
    opacity: 0.3 !important;
}
/* ────────────────────────────────────────────────────────
  툴팁
──────────────────────────────────────────────────────── */
.has-tooltip{
  position:relative;
}
.has-tooltip[data-tooltip]::before,
.has-tooltip[data-tooltip]::after{
  position:absolute;
  opacity:0;
  pointer-events:none;
  transition:opacity .16s ease, transform .16s ease;
}
.has-tooltip[data-tooltip]::after{
  content:attr(data-tooltip);
  inset:auto auto calc(100% + 6px) 50%;
  transform:translate(-50%, 2px);
  padding:6px 10px;
  border-radius:6px;
  background:var(--focus-gray);
  color:#e8e8e8;
  font-size:1.05rem;
  line-height:1.2;
  white-space:nowrap;
  box-shadow:0 6px 18px rgba(0,0,0,0.35);
  z-index:20;
}
.has-tooltip[data-tooltip]::before{
  content:none;
}
.has-tooltip[data-tooltip]:hover::after,
.has-tooltip[data-tooltip]:hover::before,
.has-tooltip[data-tooltip]:focus-visible::after,
.has-tooltip[data-tooltip]:focus-visible::before{
  opacity:1;
  transform:translate(-50%, 0);
}