/* ─── variables ─────────────────────────── */
:root {
  --white:  #ffffff;
  --gray50: #f9f9f9;
  --gray100:#f3f3f3;
  --gray200:#e8e8e8;
  --gray400:#aaaaaa;
  --gray600:#666666;
  --gray800:#333333;
  --black:  #111111;
  --accent: #111111;
  --red:    #e03131;
  --font:   'Noto Sans KR', sans-serif;
  --mono:   'DM Mono', monospace;
}

/* ─── reset ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; font-size: 16px; }
body  { font-family: var(--font); background: var(--white); color: var(--black); line-height: 1.6; overflow-x: hidden; }
a     { text-decoration: none; color: inherit; }
::-webkit-scrollbar       { width: 4px; }
::-webkit-scrollbar-track { background: var(--gray100); }
::-webkit-scrollbar-thumb { background: var(--gray200); border-radius: 2px; }

/* ─── nav ────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 60px; background: rgba(255,255,255,.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray200);
  display: flex; align-items: center; padding: 0 48px;
}
.nav-logo {
  font-size: 16px; font-weight: 800; letter-spacing: -.5px; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
}
.nav-logo-box {
  width: 26px; height: 26px; background: var(--black); border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 11px; font-weight: 700; font-family: var(--mono);
}
.nav-links { display: flex; gap: 2px; margin-left: 32px; }
.nav-link {
  background: none; border: none; color: var(--gray600); padding: 6px 14px;
  border-radius: 6px; cursor: pointer; font-size: 14px; font-family: var(--font);
  transition: all .15s;
}
.nav-link:hover { color: var(--black); background: var(--gray100); }
.nav-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }

/* ─── buttons ────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 22px; border-radius: 8px; font-size: 14px; font-weight: 600;
  font-family: var(--font); cursor: pointer; border: none; transition: all .15s;
  white-space: nowrap;
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary   { background: var(--black); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--gray800); }
.btn-secondary { background: transparent; color: var(--black); border: 1.5px solid var(--gray200); }
.btn-secondary:hover:not(:disabled) { border-color: var(--black); background: var(--gray50); }
.btn-ghost    { background: transparent; color: var(--gray600); border: 1.5px solid var(--gray200); }
.btn-ghost:hover:not(:disabled) { color: var(--black); border-color: var(--gray400); }
.btn-sm  { padding: 7px 14px; font-size: 12px; border-radius: 6px; }
.btn-lg  { padding: 14px 32px; font-size: 15px; border-radius: 10px; }
.btn-danger { background: transparent; color: var(--red); border: 1.5px solid rgba(224,49,49,.3); }
.btn-danger:hover:not(:disabled) { background: rgba(224,49,49,.06); border-color: var(--red); }

/* ─── form ───────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: 13px; font-weight: 600; color: var(--gray800);
  margin-bottom: 6px;
}
.form-input {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--gray200); border-radius: 8px;
  font-size: 14px; font-family: var(--font); color: var(--black); background: white;
  outline: none; transition: border-color .15s;
}
.form-input:focus { border-color: var(--black); }
.form-input::placeholder { color: var(--gray400); }
.form-error { color: var(--red); font-size: 12.5px; margin-top: 6px; min-height: 18px; }

/* ─── badge ──────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; padding: 3px 10px;
  border-radius: 20px; font-size: 11px; font-weight: 700; letter-spacing: .3px;
}
.badge-black  { background: var(--black); color: white; }
.badge-gray   { background: var(--gray100); color: var(--gray600); border: 1px solid var(--gray200); }
.badge-green  { background: #e6f9f0; color: #1a7a3a; border: 1px solid #b2ecd1; }
.badge-red    { background: #fff0f0; color: var(--red); border: 1px solid #ffc9c9; }
.badge-amber  { background: #fff8e6; color: #b08000; border: 1px solid #ffe08a; }

/* ─── card ───────────────────────────────── */
.card {
  background: white; border: 1.5px solid var(--gray200); border-radius: 12px;
  padding: 24px; margin-bottom: 16px;
}
.card-title {
  font-size: 11px; font-weight: 700; color: var(--gray400); letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 16px;
}

/* ─── toast ──────────────────────────────── */
#toast {
  position: fixed; bottom: 28px; right: 28px; z-index: 9999;
  background: var(--black); color: white; padding: 12px 20px;
  border-radius: 8px; font-size: 13px; font-family: var(--font);
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
  transform: translateY(0); opacity: 1; transition: all .3s;
}
#toast.hide   { transform: translateY(8px); opacity: 0; pointer-events: none; }
#toast.error  { background: var(--red); }

/* ─── footer ─────────────────────────────── */
.site-footer {
  padding: 40px 48px; border-top: 1px solid var(--gray200);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.site-footer-logo { font-size: 15px; font-weight: 800; letter-spacing: -.3px; }
.site-footer-copy { font-size: 13px; color: var(--gray400); font-family: var(--mono); }

/* ─── divider ────────────────────────────── */
.divider { height: 1px; background: var(--gray200); }


.nav-username { font-size: 13px; color: var(--gray600); margin-right: 4px; }
.nav-link.active { color: var(--black); font-weight: 700; background: var(--gray100); }

.site-footer-links { display: flex; gap: 20px; }
.site-footer-links a { font-size: 13px; color: var(--gray400); cursor: pointer; transition: color .12s; }
.site-footer-links a:hover { color: var(--black); }

/* ─── responsive ─────────────────────────── */
@media (max-width: 768px) {
  .nav { padding: 0 20px; }
  .nav-links { display: none; }
  .site-footer { padding: 28px 20px; }
}