/* =============================================
   늘경희부부한의원 - Main Stylesheet
   ============================================= */

/* CSS Variables */
:root {
  --color-text-default: rgb(115, 133, 120);
  --color-text-emphasis: rgb(96, 106, 112);
  --color-background: rgb(250, 250, 246);

  --font-heading: 'Pretendard Variable', -apple-system, sans-serif;
  --font-body: 'Pretendard Variable', -apple-system, sans-serif;
  --font-english: 'Pretendard Variable', -apple-system, sans-serif;

  --transition-fast: 300ms;
  --transition-normal: 500ms;
  --transition-slow: 800ms;

  --nav-height: 60px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  /* 스크롤바 숨기기 */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

html::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text-default);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-text-emphasis);
}

h1 {
  font-size: 2.5rem;
  font-weight: 600;
}

h2 {
  font-size: 2rem;
  font-weight: 500;
}

h3 {
  font-size: 1.5rem;
  font-weight: 500;
}

h4 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text-emphasis);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-text-emphasis);
  text-decoration: none;
  transition: opacity var(--transition-fast) ease-out;
}

a:hover {
  opacity: 0.7;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* =============================================
   Hero Section
   ============================================= */
#hero {
  position: relative;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-top: 30vh;
  background-color: var(--color-background);
  overflow: hidden;
}

.hero-logo-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-logo {
  height: 25vh;
  width: auto;
}

/* Intro Message */
.intro-message {
  margin-top: 40px;
  min-height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.intro-text {
  font-family: var(--font-body);
  font-size: 1.6rem;
  color: var(--color-text-default);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94);
  margin-bottom: 0;
}

.intro-text.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.intro-text.fade-out {
  opacity: 0;
  transform: translateY(0);
}

.intro-text.reset {
  transition: none;
  opacity: 0;
  transform: translateY(30px);
}

/* Scroll Indicator */
.scroll-indicator {
  margin-top: 40px;
  cursor: pointer;
  transition: opacity var(--transition-normal) ease-out,
              transform var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: bounce 1.5s ease-in-out infinite;
}

.scroll-indicator.hidden {
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
  animation: none;
}

.scroll-indicator.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-text {
  font-family: var(--font-body);
  font-size: 1.0rem;
  color: var(--color-text-default);
  letter-spacing: 0.1em;
}

.scroll-arrow {
  display: block;
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--color-text-default);
  border-bottom: 2px solid var(--color-text-default);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(15px);
  }
}

/* Hero scroll state */
#hero.scrolled .scroll-indicator {
  opacity: 0;
  pointer-events: none;
}

/* =============================================
   Navigation Bar
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  background-color: rgba(250, 250, 246, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity var(--transition-normal) ease-out,
              transform var(--transition-normal) ease-out;
  border-bottom: 1px solid rgba(96, 106, 112, 0.1); /* fallback for browsers without box-shadow */
}

@supports (box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1)) {
  .navbar {
    border-bottom: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
  }
}

.navbar.visible {
  opacity: 1;
  transform: translateY(0);
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height: 40px;
  width: auto;
}

/* Hamburger Menu */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-emphasis);
  transition: transform var(--transition-fast) ease-out,
              opacity var(--transition-fast) ease-out;
  transform-origin: center;
}

/* Hamburger to X transformation */
.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Navigation Menu */
.nav-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: rgba(250, 250, 246, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out,
              padding var(--transition-normal) ease-out;
}

.nav-menu.open {
  max-height: 300px;
  padding: 20px 0;
}

.nav-link {
  display: block;
  padding: 16px 24px;
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--color-text-emphasis);
  border-bottom: 1px solid rgba(96, 106, 112, 0.1);
  transition: background-color var(--transition-fast) ease-out;
}

.nav-link:last-child {
  border-bottom: none;
}

.nav-link:hover {
  background-color: rgba(96, 106, 112, 0.05);
  opacity: 1;
}

/* =============================================
   Section Navigation Dots
   ============================================= */
.section-nav {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal) ease-out;
}

.section-nav.visible {
  opacity: 1;
  pointer-events: auto;
}

.nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--color-text-default);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background-color var(--transition-fast) ease-out,
              transform var(--transition-fast) ease-out,
              border-color var(--transition-fast) ease-out;
}

.nav-dot:hover {
  transform: scale(1.3);
}

.nav-dot.active {
  background-color: var(--color-text-emphasis);
  border-color: var(--color-text-emphasis);
}

/* =============================================
   Snap Section
   ============================================= */
.snap-section {
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* content-section은 doctors + info + footer를 감싸는 자연스러운 스크롤 영역 */
.content-section {
  scroll-snap-stop: always;
}

/* =============================================
   About Section
   ============================================= */
.about-panel {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.about-content {
  max-width: 800px;
  padding: 0 24px;
}

.about-line {
  font-family: var(--font-body);
  font-size: 1.25rem;
  line-height: 2;
  color: var(--color-text-default);
  margin-bottom: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(30px);
  transition: opacity var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94),
              visibility 0ms linear;
}

/* Staggered animation delays - defined in base state */
.about-line:nth-child(1) { transition-delay: 0ms; }
.about-line:nth-child(2) { transition-delay: 250ms; }
.about-line:nth-child(3) { transition-delay: 500ms; }
.about-line:nth-child(4) { transition-delay: 750ms; }
.about-line:nth-child(5) { transition-delay: 950ms; }
.about-line:nth-child(6) { transition-delay: 1150ms; }

.about-panel.in-view .about-line {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.about-line.about-line--emphasis {
  color: var(--color-text-emphasis);
  font-weight: 500;
}

/* =============================================
   Doctors Section
   ============================================= */
.doctors-section {
  padding: 160px 24px 80px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background-color: var(--color-text-emphasis);
  margin: 20px auto 0;
}

.doctor-card {
  display: flex;
  gap: 60px;
  margin-bottom: 80px;
  align-items: flex-start;
}

.doctor-card.reverse {
  flex-direction: row-reverse;
}

.doctor-image {
  flex: 0 0 300px;
}

.placeholder-image {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg,
    rgba(115, 133, 120, 0.1) 0%,
    rgba(96, 106, 112, 0.15) 100%);
  border-radius: 4px;
}

.doctor-info {
  flex: 1;
}

.doctor-name {
  margin-bottom: 8px;
}

.doctor-title {
  font-size: 1rem;
  color: var(--color-text-default);
  margin-bottom: 24px;
}

.doctor-career ul {
  margin-left: 20px;
  margin-bottom: 16px;
}

.doctor-career li {
  list-style: disc;
  margin-bottom: 8px;
  color: var(--color-text-default);
}

/* =============================================
   Info Section
   ============================================= */
.info-section {
  background-color: rgba(96, 106, 112, 0.03);
  padding: 80px 24px;
}

.info-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.hours-section,
.location-section {
  padding: 40px;
  background-color: var(--color-background);
  border-radius: 4px;
}

.hours-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-family: var(--font-body);
}

.hours-table th,
.hours-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(96, 106, 112, 0.1);
}

.hours-table th {
  font-weight: 500;
  color: var(--color-text-emphasis);
  background-color: rgba(96, 106, 112, 0.03);
}

.hours-table td {
  color: var(--color-text-default);
}

.hours-note {
  font-size: 0.9rem;
  color: var(--color-text-default);
  margin-bottom: 8px;
}

.map-container {
  margin-bottom: 24px;
  border-radius: 4px;
  overflow: hidden;
}

.map-container iframe {
  display: block;
}

.address-info {
  margin-bottom: 24px;
}

.address-info p {
  margin-bottom: 8px;
}

.directions h4 {
  margin-top: 20px;
}

.directions p {
  font-size: 0.95rem;
}

/* =============================================
   Footer
   ============================================= */
.footer {
  background-color: var(--color-text-emphasis);
  color: rgba(250, 250, 246, 0.8);
  padding: 60px 24px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-logo-img {
  height: 60px;
  width: auto;
  opacity: 0.9;
  filter: brightness(10);
}

.footer-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: rgba(250, 250, 246, 0.95);
  margin-bottom: 8px;
}

.footer-info p {
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.footer-copyright {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(250, 250, 246, 0.1);
  width: 100%;
}

.footer-copyright p {
  font-size: 0.85rem;
  color: rgba(250, 250, 246, 0.6);
}

/* =============================================
   Responsive Design
   ============================================= */

/* Tablet */
@media (max-width: 1023px) {
  .info-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .doctor-card,
  .doctor-card.reverse {
    flex-direction: column;
    gap: 40px;
  }

  .doctor-image {
    flex: none;
    max-width: 300px;
    margin: 0 auto;
  }
}

/* Mobile */
@media (max-width: 767px) {
  html {
    font-size: 15px;
  }

  .section-nav {
    right: 12px;
    gap: 10px;
  }

  .nav-dot {
    width: 8px;
    height: 8px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  h3 {
    font-size: 1.3rem;
  }

  .hero-logo {
    height: 20vh;
  }

  .about-content {
    padding: 0 16px;
  }

  .about-line {
    font-size: 1.1rem;
    line-height: 1.9;
  }

  .doctors-section {
    padding: 120px 24px 60px 24px;
  }

  .section-title {
    margin-bottom: 40px;
  }

  .doctor-card {
    margin-bottom: 60px;
  }

  .doctor-image {
    max-width: 250px;
    width: 100%;
  }

  .info-section {
    padding: 60px 16px;
  }

  .hours-section,
  .location-section {
    padding: 24px;
  }

  .hours-table th,
  .hours-table td {
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  .footer {
    padding: 40px 16px;
  }

  .footer-logo-img {
    height: 50px;
  }
}

/* =============================================
   Floating Contact Button
   ============================================= */
.floating-contact {
  position: fixed;
  bottom: 36px;
  right: 36px;
  z-index: 998;
}

/* Circular Button (Default State) */
.floating-btn {
  width: 5vw;
  min-width: 56px;
  max-width: 80px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background-color: var(--color-text-emphasis);
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 12px rgba(96, 106, 112, 0.3);
  transition: transform var(--transition-fast) ease-out,
              box-shadow var(--transition-fast) ease-out,
              opacity var(--transition-fast) ease-out;
  position: relative;
  z-index: 2;
}

.floating-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(96, 106, 112, 0.4);
}

.floating-btn:active {
  transform: scale(0.95);
}

.floating-btn .phone-icon {
  width: 50%;
  height: 50%;
  fill: var(--color-background);
}

/* Hidden state when menu is open */
.floating-contact.menu-open .floating-btn {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.8);
}

/* Floating Menu (Expanded State) */
.floating-menu {
  position: absolute;
  bottom: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background-color: var(--color-background);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 8px 24px rgba(96, 106, 112, 0.25);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8) translateY(20px);
  transform-origin: bottom right;
  transition: opacity var(--transition-normal) cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform var(--transition-normal) cubic-bezier(0.25, 0.46, 0.45, 0.94),
              visibility 0ms linear var(--transition-normal);
  pointer-events: none;
  min-width: 180px;
}

.floating-contact.menu-open .floating-menu {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
  transition-delay: 0ms;
  pointer-events: auto;
}

/* Menu Items */
.floating-menu .menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--color-background);
  border: 1px solid rgba(96, 106, 112, 0.15);
  border-radius: 8px;
  cursor: pointer;
  transition: background-color var(--transition-fast) ease-out,
              transform var(--transition-fast) ease-out,
              border-color var(--transition-fast) ease-out,
              opacity var(--transition-fast) ease-out;
  text-align: left;
  text-decoration: none;
  opacity: 0;
  transform: translateY(10px);
  min-height: 44px;
}

.floating-contact.menu-open .menu-item {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered animation for menu items */
.floating-contact.menu-open .menu-item:nth-child(1) {
  transition-delay: 100ms;
}

.floating-contact.menu-open .menu-item:nth-child(2) {
  transition-delay: 150ms;
}

.floating-contact.menu-open .menu-item:nth-child(3) {
  transition-delay: 200ms;
}

.floating-contact.menu-open .menu-item:nth-child(4) {
  transition-delay: 250ms;
}

.floating-menu .menu-item:hover {
  background-color: rgba(96, 106, 112, 0.05);
  border-color: var(--color-text-emphasis);
  transform: translateX(-4px);
  opacity: 1;
}

.floating-menu .menu-item:active {
  transform: translateX(-4px) scale(0.98);
}

/* Close button styling */
.floating-menu .menu-item--close {
  border-color: rgba(96, 106, 112, 0.2);
  margin-top: 4px;
}

.floating-menu .menu-item--close:hover {
  background-color: rgba(96, 106, 112, 0.08);
}

/* Menu Icons */
.floating-menu .menu-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.floating-menu .menu-icon:not(.menu-icon--image) {
  fill: var(--color-text-emphasis);
}

.floating-menu .menu-icon--image {
  object-fit: contain;
}

/* Menu Text */
.floating-menu .menu-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-emphasis);
  font-weight: 500;
  white-space: nowrap;
}

/* Responsive adjustments */
@media (max-width: 767px) {
  .floating-contact {
    bottom: 30px;
    right: 30px;
  }

  .floating-btn {
    min-width: 60px;
    max-width: 70px;
  }

  .floating-menu {
    min-width: 160px;
    padding: 12px;
  }

  .floating-menu .menu-item {
    padding: 10px 12px;
    gap: 10px;
  }

  .floating-menu .menu-text {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .floating-contact {
    bottom: 24px;
    right: 24px;
  }
}

/* Accessibility: Focus states */
.floating-btn:focus-visible,
.floating-menu .menu-item:focus-visible {
  outline: 2px solid var(--color-text-emphasis);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  .floating-btn,
  .floating-menu,
  .floating-menu .menu-item {
    transition-duration: 0.01ms !important;
    animation: none !important;
  }
}