@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.8/dist/web/static/pretendard.css");

:root {
  --primary-color: #4F46E5; /* Indigo */
  --primary-hover: #4338CA;
  --bg-color: #F9FAFB;
  --card-bg: #FFFFFF;
  --text-main: #111827;
  --text-muted: #6B7280;
  --border-color: #E5E7EB;
  --success: #10B981;
  --danger: #EF4444;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.min-h-screen {
  min-height: 100vh;
}

/* Header */
header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-sm);
}

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

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background-color: var(--bg-color);
  border-color: #d1d5db;
}

.btn-block {
  width: 100%;
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  padding: 2rem;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card-hover:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* Hero Section */
.hero {
  padding: 6rem 0;
  text-align: center;
  background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: #111827;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

/* Alert/Messages */
.alert {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.alert-error {
  background-color: #FEF2F2;
  color: var(--danger);
  border: 1px solid #F87171;
}

.alert-success {
  background-color: #ECFDF5;
  color: var(--success);
  border: 1px solid #34D399;
}

/* Utils */
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }