/* ==========================================================================
   나눔과더함 이비인후과 - 동작구 어지럼증·이석증 전문 클리닉
   디자인 무드: nota.uprock.pro 레퍼런스 기반 미니멀 & 프리미엄 메디컬 스타일
   ========================================================================== */

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

:root {
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
  --color-primary: #0369a1;       /* Deep Medical Cerulean */
  --color-primary-dark: #075985;  /* Deep Ocean Navy */
  --color-primary-light: #e0f2fe; /* Soft Trust Sky */
  --color-accent: #0284c7;        /* Medical Accent */
  --color-bg-light: #fafafa;      /* Clean Minimal Neutral */
  --color-text-dark: #0f172a;     /* Slate 900 */
  --color-text-muted: #475569;    /* Slate 600 */
  --color-border: #e2e8f0;        /* Slate 200 */
}

/* Base resets & typography */
html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: var(--color-text-dark);
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  overflow-x: hidden;
  line-height: 1.65;
  letter-spacing: -0.02em;
}

::selection {
  background-color: #bae6fd;
  color: #0369a1;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Typography Enhancements */
.hero-title {
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.section-title {
  letter-spacing: -0.03em;
  line-height: 1.25;
}

/* Symptom checker heading: force single line on all screens (no wrap),
   font-size fluidly scales with viewport width so it never overflows on mobile */
.symptom-checker-title {
  white-space: nowrap;
  font-size: clamp(0.875rem, 4.3vw, 2.25rem);
}

/* Hero Section Background Photo + Legibility Overlay */
.hero-bg-section {
  background-image:
    linear-gradient(180deg, rgba(2, 6, 23, 0.62) 0%, rgba(2, 6, 23, 0.50) 55%, rgba(2, 6, 23, 0.64) 100%),
    url('../images/hero-waiting-room.jpg');
  background-size: cover;
  background-position: center 35%;
  background-repeat: no-repeat;
}

.hero-btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.7);
}

/* Glassmorphism Header */
.glass-nav {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

/* Minimal Editorial Card & Borders (nota.uprock.pro style) */
.editorial-card {
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(226, 232, 240, 0.9);
  background: #ffffff;
}

.editorial-card:hover {
  border-color: rgba(3, 105, 161, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.05);
}

/* Scroll Animation Elements */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }

/* Interactive symptom checker pill */
.symptom-tab {
  transition: all 0.2s ease;
}

.symptom-tab.active,
.symptom-tab.active:hover,
.symptom-tab.active:focus,
.symptom-tab.active:active {
  background-color: #0f172a !important;
  color: #ffffff !important;
  border-color: #0f172a !important;
}

/* Accordion transition */
.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
}

.faq-item.active .faq-content {
  max-height: 1000px;
  transition: max-height 0.6s ease-in-out;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-icon {
  transition: transform 0.3s ease;
}

/* Medical Accent Gradient Lines */
.hairline {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(226, 232, 240, 1) 20%, rgba(226, 232, 240, 1) 80%, transparent 100%);
}

/* Clean Button Styles */
.btn-primary {
  background-color: #0f172a;
  color: #ffffff;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
  background-color: #0284c7;
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid #cbd5e1;
  color: #0f172a;
  background-color: transparent;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-outline:hover {
  border-color: #0f172a;
  background-color: #f8fafc;
}

/* Number Step Circles */
.step-number {
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

/* Mobile Drawer Menu: fully self-contained layout + solid backgrounds.
   Tailwind CDN 스크립트가 느리게 로드되거나 실행되지 않는 환경(느린 모바일
   네트워크, 특정 인앱 브라우저 등)에서도 메뉴가 항상 화면 우측에 고정된
   불투명 패널로 정확히 렌더링되도록, position/사이즈/배경을 Tailwind 유틸리티에
   의존하지 않고 순수 CSS로 직접 정의한다. */
#mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background-color: rgba(2, 6, 23, 0.6);
}

#mobile-menu:not(.hidden) {
  display: block;
}

#mobile-menu > div {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 20rem;
  padding: 1.5rem;
  overflow-y: auto;
  background-color: #ffffff;
  opacity: 1;
  box-shadow: -12px 0 40px rgba(2, 6, 23, 0.25);
}

@media (min-width: 1024px) {
  #mobile-menu {
    display: none !important;
  }
}

/* Print Styles */
@media print {
  .no-print {
    display: none !important;
  }
}