:root {
  color-scheme: light;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  --primary: #059669;
  --primary-hover: #047857;
  --surface: #ffffff;
  --page: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --muted-light: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --secondary: #f1f5f9;
  background: var(--page);
  color: var(--text);
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body { margin: 0; min-height: 100vh; background: var(--page); }
button, input { font: inherit; }
button { cursor: pointer; }
.app-shell { width: 100%; min-height: 100vh; }
.hidden { display: none; }

.login-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: var(--page);
  position: relative;
}

.login-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background:
    radial-gradient(circle at 20% 50%, rgba(148, 163, 184, 0.14) 0%, transparent 52%),
    radial-gradient(circle at 80% 50%, rgba(129, 140, 248, 0.12) 0%, transparent 52%);
}

.login-screen > * { position: relative; z-index: 1; }

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.95);
}

.header-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.header-brand {
  color: var(--text);
  font-size: 18px;
  line-height: 28px;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
  white-space: nowrap;
}

.header-nav {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.92);
}

.header-nav-item {
  min-height: 0;
  padding: 6px 10px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  line-height: 16px;
  transition: background 0.2s ease, color 0.2s ease;
}
.header-nav-item:hover,
.header-nav-item.active { background: var(--secondary); color: var(--text); }
.header-nav-item.active { font-weight: 600; }

.login-main-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.login-hero {
  min-height: calc(100vh - 210px);
  display: flex;
  align-items: center;
  padding: 40px 0;
}

.login-grid {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 32px;
}

.login-intro { display: grid; gap: 24px; }
.login-eyebrow {
  margin: 0;
  color: var(--muted-light);
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  letter-spacing: 0.08em;
}
.login-copy { display: grid; gap: 16px; }
.login-main-title {
  margin: 0;
  color: var(--text);
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: -0.025em;
  font-weight: 700;
}
.login-sub-title {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
}

.notice-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.notice-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #ffffff;
  color: #334155;
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
}
.notice-button:hover { background: var(--secondary); color: var(--text); }

.preview-watermark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f43f5e;
  color: #ffffff;
  font-size: 11px;
  line-height: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.login-panel-wrap { width: 100%; }
.login-card {
  width: 100%;
  max-width: 448px;
  margin: 0 auto;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.login-form { display: grid; gap: 16px; }
.login-card-title {
  margin: 0;
  color: var(--text);
  font-size: 18px;
  line-height: 28px;
  font-weight: 600;
}

.field-label { display: block; color: var(--muted); font-size: 14px; line-height: 20px; font-weight: 400; }
.field-label > span { display: block; margin-bottom: 8px; }
.field-label input {
  width: 100%;
  height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #ffffff;
  color: var(--text);
  font-size: 14px;
  line-height: 20px;
  outline: none;
}
.field-label input::placeholder { color: var(--muted-light); }
.field-label input:focus { border-color: var(--border-strong); }

.password-field { position: relative; }
.password-field input { padding-right: 40px; }
.password-toggle {
  position: absolute;
  inset: 0 0 0 auto;
  display: inline-flex;
  width: 40px;
  height: 36px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted-light);
}
.password-toggle:hover { color: var(--text); }
.password-icon { width: 20px; height: 20px; }

.remember-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 20px;
}
.remember-row input { width: 14px; height: 14px; margin: 0; accent-color: var(--primary); }

.primary-btn,
.secondary-btn,
.logout-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 36px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.primary-btn {
  width: 100%;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #ffffff;
  font-weight: 600;
}
.primary-btn:hover { border-color: var(--primary-hover); background: var(--primary-hover); }

.login-extra-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.secondary-btn { width: 100%; color: #334155; }
.secondary-btn.outline { border: 1px solid var(--border-strong); background: #ffffff; }
.secondary-btn.filled { border: 1px solid var(--secondary); background: var(--secondary); }
.secondary-btn:hover { background: #e2e8f0; color: var(--text); }

.login-footer {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid var(--border);
  color: var(--muted-light);
  text-align: center;
  font-size: 12px;
}

.card { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.dashboard-screen { width: 100%; min-height: 100vh; padding: 16px; background: var(--page); position: relative; }
.dashboard-preview { position: fixed; top: 26px; right: 28px; z-index: 1000; }
.layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); min-height: calc(100vh - 32px); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; background: #fff; }
.sidebar { display: flex; flex-direction: column; max-height: calc(100vh - 32px); overflow-y: auto; padding: 20px 14px 14px; border-right: 1px solid var(--border); background: #fff; }
.sidebar-brand { display: inline-flex; align-items: baseline; gap: 8px; padding: 0 8px 18px; margin-bottom: 8px; border-bottom: 1px solid var(--border); letter-spacing: .08em; }
.brand-name, .brand-product { font-size: 17px; font-weight: 600; }
.brand-name { color: var(--text); }
.brand-product { color: var(--primary); }
#side-nav { flex: 1; }
.sidebar-footer { padding-top: 12px; border-top: 1px solid var(--border); }
.logout-btn { width: 100%; border: 1px solid var(--border-strong); background: #fff; color: var(--text); }
.logout-btn:hover { background: var(--secondary); }
.nav-group + .nav-group { margin-top: 16px; }
.nav-group h4 { margin: 0 0 8px; padding: 7px 9px; border-left: 3px solid var(--primary); border-radius: 8px; background: #ecfdf5; color: #065f46; font-size: 12px; font-weight: 600; }
.nav-list { display: grid; gap: 5px; padding-left: 6px; }
.nav-item { width: 100%; position: relative; padding: 8px 10px 8px 24px; border: 0; border-radius: 8px; background: transparent; color: #334155; text-align: left; font-size: 14px; }
.nav-item::before { content: "└"; position: absolute; left: 8px; top: 50%; transform: translateY(-50%); color: #94a3b8; font-size: 12px; }
.nav-item.active { background: #d1fae5; color: #065f46; font-weight: 600; }
.nav-item:hover { background: var(--secondary); }
.content { min-height: calc(100vh - 32px); border: 0; border-radius: 0; }
.content h3 { margin-top: 0; color: var(--text); font-size: 24px; }
.content p { color: var(--muted); }
.page-body { margin-top: 18px; padding: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--page); }
.nav-group-bottom { margin-top: auto; padding-top: 14px; }

@media (min-width: 640px) {
  .header-container { padding: 16px 24px; flex-direction: row; align-items: center; justify-content: space-between; }
  .header-brand { font-size: 20px; }
  .header-nav { width: auto; }
  .header-nav-item { padding: 6px 16px; font-size: 14px; line-height: 20px; }
  .login-main-container { padding: 0 24px; }
  .login-hero { padding: 56px 0; }
  .login-eyebrow { font-size: 16px; line-height: 24px; }
  .login-main-title { font-size: 36px; }
  .login-sub-title { font-size: 18px; line-height: 28px; }
  .login-card { padding: 32px; }
}

@media (min-width: 1024px) {
  .header-container, .login-main-container { padding-left: 32px; padding-right: 32px; }
  .login-hero { padding: 64px 0; }
  .login-grid { grid-template-columns: minmax(0, 1fr) minmax(360px, 440px); gap: 48px; }
  .login-main-title { font-size: 48px; }
  .login-card { margin: 0; }
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { max-height: none; border-right: 0; border-bottom: 1px solid var(--border); }
  .content { min-height: auto; }
}