@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
  --bg-main: #0b0f1a;
  --bg-sub: #111827;
  --bg-card: #1a1f2e;
  --border: #1f2937;

  --text-main: #e5e7eb;
  --text-sub: #9ca3af;

  --accent: #22d3ee; 
  --accent-weak: #0891b2;
}

/* ======================= 기본 ======================= */
html, body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
}

/* ======================= 네비 ======================= */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(11,15,26,0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent);
  letter-spacing: 0.5px;
}

.nav-links a {
  margin-left: 20px;
  color: var(--text-sub);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent);
}

.contact-btn {
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  background: transparent;
}

.contact-btn:hover {
  background: rgba(34,211,238,0.1);
}

/* ======================= 플랜 섹션 ======================= */
.plans-section {
  padding: 140px 20px 80px;
  text-align: center;
}

.plans-section h2 {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.plans-section p {
  font-size: 1rem;
  color: var(--text-sub);
  margin-bottom: 60px;
}

/* ======================= 플랜 그리드 ======================= */
.plan-grid {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.plan {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 36px 28px;
  width: 280px;
  text-align: center;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  /* 카드 전체 클릭 안 되게 cursor 제거 */
}

.plan::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(120deg, var(--accent), var(--accent-weak), var(--accent));
  transform: rotate(45deg);
  opacity: 0.15;
  transition: all 0.4s ease;
  pointer-events: none; /* ← 추가: 버튼 클릭 가능하게 */
}

.plan:hover::before {
  opacity: 0.3;
  transform: rotate(0deg) scale(1.1);
}

.plan:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 16px 40px rgba(34,211,238,0.2);
}

.plan-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.plan h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent);
}

.plan p {
  font-size: 0.95rem;
  color: var(--text-sub);
  margin-bottom: 28px;
  line-height: 1.5;
}

/* ======================= 버튼 ======================= */
.plan .btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 12px;
  background: var(--accent);
  color: #000;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer; /* ← 버튼 클릭 가능 */
  transition: all 0.3s ease;
}

.plan .btn:hover {
  background: var(--accent-weak);
  transform: translateY(-2px);
}

/* ======================= 푸터 ======================= */
.footer {
  background: var(--bg-sub);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
  color: var(--text-sub);
}

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

.footer a:hover {
  color: var(--accent-weak);
}

/* ======================= 반응형 ======================= */
@media(max-width: 700px){
  .plan-grid {
    flex-direction: column;
    align-items: center;
  }
}