/* ===== Design Tokens =================================================== */
:root {
  /* Colors (dark) */
  --bg: #0a0f1a;
  --surface: #0f172a;
  --surface-glass: rgba(255, 255, 255, 0.06);
  --text: #e5edff;
  --muted: #9aa7c7;
  --border: #1e293b;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

  --primary: #3b82f6;
  /* blue-500 */
  --primary-600: #2563eb;
  /* blue-600 */
  --accent: #60a5fa;
  /* blue-400 */

  /* Typography */
  --font-family: "Noto Sans KR", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  --fs-1: clamp(28px, 4.5vw, 52px);
  --fs-2: clamp(18px, 2.2vw, 22px);
  --fs-3: 16px;
  --fs-4: 14px;

  /* Radii */
  --r-sm: 10px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-full: 999px;

  /* Spacing */
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  /* Fallback solid color to avoid white flash at overscroll edges */
  background-color: #0b1220;
  background:
    radial-gradient(1100px 700px at 15% -10%, #12223f 0%, rgba(18, 34, 63, 0) 60%),
    radial-gradient(900px 560px at 100% 0%, #0f1a30 0%, rgba(15, 26, 48, 0) 60%),
    linear-gradient(120deg, #070b14 0%, #0b1220 100%);
  color: var(--text);
  /* Prevent rubber-banding revealing default page color */
  overscroll-behavior: none;
}

html {
  background-color: #0b1220;
}

::selection {
  background: rgba(59, 130, 246, 0.2);
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(15, 23, 42, 0.7);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.brand-text {
  font-weight: 700;
  letter-spacing: .2px;
}

.brand-logo {
  height: 28px;
  width: auto;
  display: block;
  border-radius: 10px;
}

.nav {
  display: flex;
  gap: var(--space-3);
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
}

@media (max-width: 640px) {
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: var(--space-4);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    z-index: 20;
  }

  .nav.open {
    transform: translateY(0);
  }

  .nav a {
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--border);
  }

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

  .mobile-menu-toggle {
    display: block;
  }

  .brand-text {
    font-size: 14px;
  }

  .site-header .container {
    padding: var(--space-2) 0;
  }
}

.hero {
  padding: var(--space-8) 0 var(--space-6);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  gap: var(--space-3);
  justify-items: start;
}

.bg-blob {
  position: absolute;
  width: 520px;
  height: 520px;
  filter: blur(60px);
  opacity: 0.18;
}

.blob-a {
  top: -120px;
  left: -120px;
  background: radial-gradient(circle, var(--primary), rgba(0, 0, 0, 0) 60%);
}

.blob-b {
  bottom: -160px;
  right: -160px;
  background: radial-gradient(circle, var(--accent), rgba(0, 0, 0, 0) 60%);
}

.gradient-text {
  color: var(--text);
}

@supports (-webkit-background-clip: text) {
  .rainbow-gradient {
    background: linear-gradient(90deg,
        #ff0066,
        #ff6600,
        #ffcc00,
        #66ff00,
        #00ff66,
        #0066ff,
        #6600ff,
        #ff0066,
        #ff6600,
        #ffcc00);
    background-size: 1000% 1000%;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    color: transparent !important;
    animation: rainbow-flow-smooth 4s linear infinite, rainbow-glow 3s ease-in-out infinite;
    font-weight: 800;
    display: inline-block;
    position: relative;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
    transform-origin: center;
  }
  
  .rainbow-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent);
    animation: shimmer 2s ease-in-out infinite;
    pointer-events: none;
  }
}

/* Fallback for unsupported browsers */
@supports not (-webkit-background-clip: text) {
  .rainbow-gradient {
    color: #ff006e !important;
    animation: rainbow-color 3s ease-in-out infinite;
    font-weight: 800;
    display: inline-block;
  }

  @keyframes rainbow-color {
    0% {
      color: #ff006e;
    }

    14% {
      color: #ff8500;
    }

    28% {
      color: #ffb700;
    }

    42% {
      color: #00f5ff;
    }

    56% {
      color: #8338ec;
    }

    70% {
      color: #3a86ff;
    }

    84% {
      color: #06ffa5;
    }

    100% {
      color: #ff006e;
    }
  }
}

@keyframes rainbow-slide {

  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}

@keyframes rainbow-flow {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 200% 50%;
  }
}

@keyframes rainbow-flow-smooth {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes rainbow-glow {
  0%, 100% {
    filter: brightness(1) saturate(1) drop-shadow(0 0 15px rgba(255, 0, 102, 0.6));
    transform: scale(1);
  }
  25% {
    filter: brightness(1.2) saturate(1.3) drop-shadow(0 0 25px rgba(255, 102, 0, 0.8));
    transform: scale(1.02);
  }
  50% {
    filter: brightness(1.1) saturate(1.2) drop-shadow(0 0 20px rgba(102, 255, 0, 0.7));
    transform: scale(1.01);
  }
  75% {
    filter: brightness(1.3) saturate(1.4) drop-shadow(0 0 30px rgba(0, 102, 255, 0.9));
    transform: scale(1.03);
  }
}

.hero-title {
  font-size: var(--fs-1);
  line-height: 1.2;
  margin: 0;
  max-width: 25ch;
}

.hero-subtitle {
  color: var(--muted);
  font-size: var(--fs-3);
  margin: var(--space-2) 0 var(--space-1);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--r-full);
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: white;
  font-size: 12px;
  margin-left: 6px;
}

.notify-form {
  display: flex;
  flex-direction: row;
  gap: 8px;
  margin-top: var(--space-2);
  align-items: center;
}

.notify-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 12px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: #ffffff;
  color: #000000 !important;
  outline: none;
  height: 48px;
  box-sizing: border-box;
}

.notify-form input[readonly] {
  color: var(--text);
  opacity: .9;
}

/* Input group for demo search */
.input-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 8px 10px;
  box-shadow: var(--shadow);
}

.input-group .input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  padding: 10px 6px;
  font-size: 15px;
}

.input-group .input[readonly] {
  color: var(--text);
}

/* Fixed demo query text color override */
#demo-query {
  color: #111 !important;
}

.input-group .input-icon {
  color: var(--muted);
  display: grid;
  place-items: center;
  padding-left: 4px;
}

.input-group .actions {
  display: flex;
  gap: 8px;
}

.notify-form input::placeholder {
  color: #7d8798;
}

.btn {
  padding: 12px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .06s ease, filter .2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  border: 1px solid var(--primary-600);
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: #fff;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-secondary {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
}

.btn-secondary:hover {
  filter: brightness(1.1);
}

.cta-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
  flex-wrap: wrap;
}

.micro-copy {
  color: var(--muted);
  font-size: 12px;
}

.section-title {
  font-size: var(--fs-2);
  margin: 0 0 var(--space-4);
}

.alt-contact {
  color: var(--muted);
  margin-top: 8px;
}

.alt-contact a {
  color: var(--text);
}

.disclaimer {
  color: var(--muted);
  font-size: 12px;
}

.section {
  padding: 40px 0 80px;
}

.grid-3 {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 720px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface-glass);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.feature .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 30% 30%, var(--primary), #dbeafe);
  color: white;
  margin-bottom: 10px;
}

/* Emphasis card spacing */
.feature.highlight {
  padding: var(--space-5);
}

@media (min-width: 720px) {
  .feature.highlight {
    padding: var(--space-6);
  }
}

.card .btn {
  margin-top: var(--space-3);
}

/* Steps */
.steps {
  gap: var(--space-4);
}

.step {
  position: relative;
  padding-top: var(--space-5);
}

.step-num {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  width: 28px;
  height: 28px;
  border-radius: var(--r-full);
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: #fff;
  font-size: 13px;
}

/* Chips */
.chips {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 13px;
}

/* Highlight card */
.highlight {
  border-color: #3559b3;
  box-shadow: 0 10px 40px rgba(79, 140, 255, 0.15);
}

.benefits {
  margin: 0 0 var(--space-3);
  padding-left: 18px;
  color: var(--muted);
}

/* FAQ */
.faq details {
  margin-bottom: var(--space-3);
}

.faq summary {
  cursor: pointer;
  outline: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary {
  position: relative;
  padding-right: 22px;
}

.faq summary::after {
  content: '▾';
  position: absolute;
  right: 0;
  top: 0;
  color: var(--muted);
  transition: transform .2s ease;
}

.faq details[open] summary::after {
  transform: rotate(180deg);
}

.map {
  width: 100%;
  height: 360px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 6px 0;
}

.map-toolbar {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.map .leaflet-container {
  background: #0b0f16;
}

/* Recommendations block */
.rec {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.rec .item {
  background: var(--surface-glass);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 12px 14px;
  backdrop-filter: blur(6px);
}

.rec .item h4 {
  margin: 0 0 4px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rec .item p {
  margin: 0;
  color: var(--muted);
}

.rec .actions {
  margin-top: 6px;
  display: flex;
  gap: 8px;
}

.link-btn {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-glass);
  color: var(--text);
  text-decoration: none;
}

/* Toggle details */
.text-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

.rec .details {
  display: none;
  margin-top: 6px;
  color: var(--muted);
}

.rec .item.open .details {
  display: block;
}

/* Custom pin markers */
.custom-pin-marker {
  background: none !important;
  border: none !important;
}

.text-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

/* 외부 색상 아이콘 사용으로 필터 클래스 제거 */

.modal.hidden {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.modal-dialog {
  position: relative;
  width: min(960px, 92%);
  margin: 6vh auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
  animation: pop .25s ease;
  max-height: 84vh;
  overflow: auto;
}

/* Reduce map height inside modal on small screens */
@media (max-width: 640px) {
  #modal-map.map {
    height: 320px;
  }
}

/* Marker tweak to ensure visibility */
.jit-marker {
  will-change: transform;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
}

.modal-footer {
  padding: var(--space-4) 0 0;
  margin-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-email-form {
  margin-bottom: var(--space-4);
}

.modal-email-form h3 {
  font-size: var(--fs-3);
  margin: 0 0 var(--space-3) 0;
  color: var(--text);
}

.modal-email-form .notify-form {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.modal-email-form .notify-form input[type="email"] {
  flex: 1;
  color: #000000 !important;
}

.modal-email-form .btn-icon {
  position: relative;
  top: 0;
}

#demo-search-btn {
  position: relative;
  top: -4px;
}

.modal-search {
  margin-bottom: var(--space-4);
}

.modal-search .input-group {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--r-md);
  padding: var(--space-2);
}

.modal-buttons {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

.btn-like {
  background: transparent;
  border: 1px solid rgba(255, 182, 193, 0.6);
  color: #ff69b4;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  font-size: 12px;
  transition: all 0.3s ease;
}

.btn-like svg {
  width: 14px;
  height: 14px;
}

.btn-icon {
  background: var(--primary);
  border: 1px solid var(--primary-600);
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
  flex-shrink: 0;
  position: relative;
  top: -6px;
}

.btn-icon:hover {
  background: var(--primary-600);
  transform: scale(1.05);
}

.btn-like:hover {
  background: rgba(255, 105, 180, 0.1);
  border-color: #ff69b4;
  transform: scale(1.05);
}

.btn-like.liked {
  background: #ff69b4;
  color: white;
  animation: heart-bounce 0.6s ease;
}

.like-count {
  font-size: var(--fs-4);
  font-weight: 600;
}

@keyframes heart-bounce {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

/* AI Recommendation Intro */
.ai-recommendation-intro {
  margin-bottom: var(--space-5) !important;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
  position: relative !important;
  z-index: 10 !important;
}

.ai-intro-card {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(147, 51, 234, 0.1)) !important;
  border: 1px solid rgba(59, 130, 246, 0.3) !important;
  border-radius: var(--r-md) !important;
  padding: var(--space-5) !important;
  position: relative !important;
  overflow: hidden !important;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
  width: 100% !important;
  min-height: 100px !important;
}

.ai-intro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
  background-size: 200% 100%;
  animation: gradient-flow 3s ease-in-out infinite;
}

.ai-intro-card h4 {
  color: var(--primary);
  margin: 0 0 var(--space-3) 0;
  font-size: var(--fs-3);
  font-weight: 700;
}

.ai-intro-card p {
  margin: 0 0 var(--space-3) 0;
  line-height: 1.6;
  color: var(--text);
}

.ai-intro-card p:last-of-type {
  margin-bottom: var(--space-4);
}

.ai-confidence {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.confidence-badge {
  background: rgba(34, 197, 94, 0.2);
  color: #22c55e;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--r-full);
  font-size: var(--fs-4);
  font-weight: 600;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.source-count {
  color: var(--muted);
  font-size: var(--fs-4);
  font-weight: 500;
}

@keyframes gradient-flow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--text-secondary);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: var(--text-secondary);
  color: var(--bg);
}

@keyframes pop {
  from {
    transform: translateY(8px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-4) 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #162033;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 10px 12px;
}

.hidden {
  display: none;
}

/* Utilities */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Animations ====================================================== */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease;
}

@keyframes floatUp {
  from {
    transform: translateY(16px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.reveal.in[data-animate="float-up"] {
  animation: floatUp .7s ease both;
}

.reveal.in[data-animate="fade-up"] {
  animation: floatUp .6s ease both;
}