:root {
  --color-bg: #f4faf8;
  --color-surface: #ffffff;
  --color-border: #e2ede9;
  --color-text: #14231f;
  --color-muted: #5c6f69;
  --color-primary: #0d9488;
  --color-primary-dark: #0b7a70;
  --color-primary-soft: #e6f7f4;
  --radius-lg: 1rem;
  --radius-md: 0.65rem;
  --shadow-card: 0 20px 40px -20px rgba(20, 40, 35, 0.2), 0 2px 8px rgba(20, 40, 35, 0.06);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Malgun Gothic", sans-serif;
  font-size: 17px;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

main { flex: 1 0 auto; padding-top: 1rem; }

.navbar {
  background: rgba(255, 255, 255, 0.85) !important;
  border-bottom: 1px solid var(--color-border) !important;
  box-shadow: none !important;
}
.navbar-brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary-dark) !important;
}

.footer {
  flex-shrink: 0;
  padding: 1.25rem 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  background: transparent;
}

.hero {
  padding: 4.5rem 1rem 3.5rem;
  text-align: center;
}
.hero .badge-soft {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.9rem;
}
.hero p {
  color: var(--color-muted);
  font-size: 1.05rem;
  max-width: 32rem;
  margin: 0 auto 2rem;
}
.hero .btn { min-width: 9rem; }

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  height: 100%;
}
.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.feature-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin: 0;
}

.mypage-card {
  max-width: 46rem;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 3rem;
}

.question-list-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
}

.question-table th {
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.85rem;
}
.mypage-card h1 {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}
.auth-subtitle { color: var(--color-muted); font-size: 1rem; margin-bottom: 1.75rem; }

.user-info {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1rem;
  margin-bottom: 1.5rem;
}
.user-info dt { color: var(--color-muted); font-weight: 600; }
.user-info dd { margin: 0; }

.btn {
  border-radius: var(--radius-md);
  font-weight: 600;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}
.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-primary:hover, .btn-primary:active {
  background: var(--color-primary-dark) !important;
  border-color: var(--color-primary-dark) !important;
}
.btn-outline-primary {
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}
.btn-outline-primary:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}