/* MS Utils - Shared Theme System */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

:root {
  /* Light mode (default for prefers-color-scheme, but we control via class) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-elevated: #ffffff;
  --bg-hover: #e2e8f0;
  --bg-input: #ffffff;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f8fafc;
  
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  
  --accent: #f97316;          /* Maple orange */
  --accent-hover: #ea580c;
  --accent-soft: #fff7ed;
  --accent-text: #c2410c;
  
  --success: #059669;
  --success-soft: #ecfdf5;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --warning: #d97706;
  --info: #0284c7;
  --info-soft: #f0f9ff;
  
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  
  --header-height: 60px;
  --font: 'Pretendard', 'Noto Sans KR', system-ui, -apple-system, sans-serif;
}

/* Dark mode */
html.dark {
  --bg-primary: #0b0f14;
  --bg-secondary: #111827;
  --bg-tertiary: #1e293b;
  --bg-elevated: #1e293b;
  --bg-hover: #334155;
  --bg-input: #1e293b;
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;
  
  --border: #1e293b;
  --border-strong: #334155;
  
  --accent: #fb923c;
  --accent-hover: #f97316;
  --accent-soft: #431407;
  --accent-text: #fdba74;
  
  --success: #34d399;
  --success-soft: #064e3b;
  --danger: #f87171;
  --danger-soft: #7f1d1d;
  --warning: #fbbf24;
  --info: #38bdf8;
  --info-soft: #0c4a6e;
  
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5), 0 4px 6px -4px rgba(0,0,0,0.4);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ===== Shared Header ===== */
.ms-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg-secondary) 85%, transparent);
}

.ms-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ms-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.ms-logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #f97316, #ea580c);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.35);
}

.ms-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ms-nav a {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
}

.ms-nav a:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.ms-nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

.ms-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ms-theme-btn {
  width: 38px;
  height: 38px;
  min-width: 38px;
  min-height: 38px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  padding: 0;
  margin: 0;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.ms-theme-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: block;
}

.ms-theme-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* Mobile nav */
.ms-nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .ms-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px;
    gap: 4px;
  }
  .ms-nav.open {
    display: flex;
  }
  .ms-nav a {
    width: 100%;
    padding: 12px 16px;
  }
  .ms-nav-toggle {
    display: flex;
  }
}

/* ===== Common Components ===== */
.ms-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 16px;
}

.ms-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}

.ms-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.ms-btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.ms-btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.ms-btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border);
}
.ms-btn-secondary:hover {
  background: var(--bg-hover);
}

.ms-btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.ms-btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Form elements */
.ms-input, .ms-select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.15s ease;
}
.ms-input:focus, .ms-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}

.ms-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

/* Footer */
.ms-footer {
  margin-top: 48px;
  padding: 24px 16px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.ms-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}
.ms-footer a:hover {
  color: var(--accent);
}

/* Utility */
.ms-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}