@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --success: #10b981;
  --danger: #ef4444;
  --bg-main: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.92);
  --border: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  background-color: var(--bg-main);
  background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Nav */
.navbar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.brand-badge {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: white;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
  color: var(--primary);
  background: var(--primary-light);
}

/* Layout Containers */
.container {
  max-width: 1380px;
  margin: 0 auto;
  padding: 1.5rem 1.2rem;
  width: 100%;
  flex: 1;
}

/* Card */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--accent);
  color: #78350f;
}
.btn-accent:hover {
  background: #d97706;
  color: white;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
}
.btn-outline:hover {
  background: #f1f5f9;
}

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.85rem 1.8rem;
  font-size: 1.1rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.1rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: #334155;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  background: white;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: #dcfce7; color: #15803d; }
.badge-warning { background: var(--accent-light); color: #b45309; }
.badge-danger { background: #fee2e2; color: #b91c1c; }

/* Tables */
.table-responsive {
  overflow-x: auto;
}
.styled-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.8rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.styled-table th {
  background: #1e293b;
  color: white;
  text-align: left;
  padding: 0.75rem 0.9rem;
  font-size: 0.88rem;
}
.styled-table td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.styled-table tbody tr:nth-child(even) {
  background: #f8fafc;
}
.styled-table tbody tr:hover {
  background: #f1f5f9;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-backdrop.show {
  display: flex;
}
.modal-content {
  background: white;
  border-radius: var(--radius-md);
  padding: 2rem;
  max-width: 480px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalPop {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Toast */
.alert {
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.2rem;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-info { background: #e0f2fe; color: #075985; border: 1px solid #7dd3fc; }

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  background: white;
  margin-top: auto;
}