/* ═══════════════════════════════════════════
   VE Landing Page — SaaS Design Standard
   White Mode / Navy-Accent / Pretendard+Outfit
   ═══════════════════════════════════════════ */

:root {
  --navy: #061E4A;
  --accent: #3B82F6;
  --emerald: #10B981;
  --orange: #F97316;
  --red: #EF4444;
  --bg: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-panel: #F1F5F9;
  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border: #F1F5F9;
  --border-mid: #E2E8F0;
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.font-outfit { font-family: 'Outfit', sans-serif; }

/* ── Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 80px 24px 60px;
  position: relative;
  background: #FAFBFF;
  overflow: hidden;
}

/* Three.js Canvas */
#heroParticles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

/* Aurora Background */
.aurora-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  animation: aurora-drift 20s ease-in-out infinite;
}

.aurora-blob.a1 {
  width: 500px; height: 500px;
  top: -10%; left: 10%;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%);
  animation-delay: 0s;
}

.aurora-blob.a2 {
  width: 600px; height: 600px;
  top: 20%; right: -5%;
  background: radial-gradient(circle, rgba(6,30,74,0.10) 0%, transparent 70%);
  animation-delay: -7s;
}

.aurora-blob.a3 {
  width: 450px; height: 450px;
  bottom: -5%; left: 30%;
  background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 70%);
  animation-delay: -14s;
}

@keyframes aurora-drift {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(60px, -40px) scale(1.15); }
  50%  { transform: translate(-30px, 30px) scale(0.95); }
  75%  { transform: translate(40px, 50px) scale(1.1); }
  100% { transform: translate(0, 0) scale(1); }
}

/* Floating VE Keywords */
.floating-words {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.fw {
  position: absolute;
  left: var(--x);
  top: var(--y);
  font-family: 'Outfit', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: rgba(6,30,74,0.18);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  animation: fw-float 20s ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes fw-float {
  0%   { opacity: 0; transform: translate(0, 0) scale(0.8); }
  10%  { opacity: 1; }
  45%  { opacity: 1; transform: translate(20px, -30px) scale(1.1); }
  55%  { opacity: 1; transform: translate(-10px, -40px) scale(1.05); }
  90%  { opacity: 1; }
  100% { opacity: 0; transform: translate(0, 0) scale(0.8); }
}

@keyframes float-orb {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(30px,-40px) scale(1.1); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--navy);
  color: white;
  padding: 6px 18px;
  border-radius: 2px;
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}

.hero-badge .pulse-dot {
  width: 6px; height: 6px;
  background: var(--emerald);
  border-radius: 50%;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.4; transform:scale(1.5); }
}

/* Gradient-Shift Title */
.gradient-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
  background: linear-gradient(
    90deg,
    #061E4A 0%,
    #3B82F6 33%,
    #1D4ED8 66%,
    #061E4A 100%
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-x 3s ease-in-out infinite;
}

.gradient-title .accent-word {
  background: linear-gradient(
    90deg,
    #3B82F6 0%,
    #1D4ED8 33%,
    #10B981 66%,
    #3B82F6 100%
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-x 3s ease-in-out infinite;
  animation-delay: -1s;
}

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

.hero-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--navy);
  color: white;
  padding: 14px 36px;
  border: none;
  border-radius: 2px;
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  z-index: 2;
}

.hero-cta:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.25);
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  position: relative;
  z-index: 2;
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-family: 'Outfit', sans-serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--navy);
}

.hero-stat .label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* ── Grid Lines (decorative) ── */
.grid-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.3;
}

.grid-lines .v-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border-mid), transparent);
}

/* ── Section Common ── */
.section {
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 48px;
}

/* ── Feature Cards ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: white;
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--border-mid);
  transition: background 0.3s ease;
}

.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 15px 30px -5px rgba(0,0,0,0.05);
  transform: translateY(-4px);
}

.feature-card:hover::after {
  background: var(--accent);
}

.feature-icon {
  width: 40px; height: 40px;
  background: rgba(6,30,74,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--navy);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Dark Navy Block ── */
.navy-block {
  background: var(--navy);
  color: white;
  padding: 80px 24px;
  position: relative;
  overflow: hidden;
}

.navy-block .deco-circle {
  position: absolute;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.06;
}

.navy-block .deco-circle:nth-child(1) {
  width: 400px; height: 400px;
  top: -100px; right: -100px;
  animation: float-orb 18s ease-in-out infinite;
}

.navy-block .deco-circle:nth-child(2) {
  width: 300px; height: 300px;
  bottom: -80px; left: -60px;
  animation: float-orb 14s ease-in-out infinite reverse;
}

.navy-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.navy-block .section-label { color: var(--accent); }
.navy-block .section-title { color: white; }
.navy-block .section-desc { color: rgba(255,255,255,0.6); }

.navy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.navy-card {
  padding: 28px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.navy-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-3px);
}

.navy-card .card-num {
  font-family: 'Outfit', sans-serif;
  font-size: 11px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.navy-card h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.navy-card p {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

/* ── Pipeline ── */
.pipeline-flow {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  padding: 20px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.pipeline-flow::-webkit-scrollbar {
  display: none;
}

.pipeline-step {
  flex: 0 0 160px;
  text-align: center;
  padding: 24px 16px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 2px;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
}

.pipeline-step:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

/* Dark-mode active state */
.pipeline-step.step-active {
  background: var(--navy);
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(6,30,74,0.3);
}

.pipeline-step.step-active .step-num { color: var(--accent); }
.pipeline-step.step-active h4 { color: white; }
.pipeline-step.step-active p { color: rgba(255,255,255,0.6); }

.pipeline-arrow svg {
  transition: color 0.3s ease;
}

.pipeline-arrow.arrow-active svg {
  color: var(--accent);
  animation: none;
}

.pipeline-step .step-num {
  font-family: 'Outfit', sans-serif;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}

.pipeline-step h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.pipeline-step p {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.5;
}

.pipeline-arrow {
  flex: 0 0 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border-mid);
}

.pipeline-arrow svg {
  animation: arrow-pulse 2s ease-in-out infinite;
}

@keyframes arrow-pulse {
  0%,100% { opacity:0.4; transform:translateX(0); }
  50% { opacity:1; transform:translateX(4px); }
}

/* ── KG Image-Text Rows ── */
.img-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.img-row-reverse {
  direction: rtl;
}

.img-row-reverse > * {
  direction: ltr;
}

.img-row-media {
  overflow: hidden;
  border-radius: 2px;
  border: 1px solid var(--border);
}

.img-row-media img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}

.img-row:hover .img-row-media img {
  transform: scale(1.03);
}

.img-row-text {
  padding: 16px 0;
}

.img-row-text .tag {
  display: inline-block;
  font-family: 'Outfit', sans-serif;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid rgba(59,130,246,0.2);
  margin-bottom: 16px;
}

.img-row-text h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
  line-height: 1.4;
}

.img-row-text p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.img-row-text ul {
  list-style: none;
  padding: 0;
}

.img-row-text ul li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.img-row-text ul li::before {
  content: '';
  width: 4px; height: 4px;
  background: var(--accent);
  flex-shrink: 0;
}

/* KG Metrics Grid */
.kg-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.kg-metric {
  padding: 16px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 2px;
  text-align: center;
  transition: all 0.3s ease;
}

.kg-metric:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.kg-metric-value {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}

.kg-metric-label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

@media (max-width: 768px) {
  .img-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .img-row-reverse {
    direction: ltr;
  }
  .kg-metrics {
    grid-template-columns: 1fr;
  }
  .hero-stats { flex-direction: column; gap: 24px; }
  .pipeline-flow { flex-wrap: wrap; justify-content: center; }
  .pipeline-arrow { transform: rotate(90deg); flex: 0 0 30px; }
}

/* ── Footer ── */
.site-footer {
  margin-top: 0;
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

.site-footer a,
.site-footer span {
  color: #BFBFBF;
  font-size: 11pt;
  font-family: 'Outfit', sans-serif;
  text-decoration: none;
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ── Counter Animation ── */
.count-up {
  display: inline-block;
}

/* ── Password Modal ── */
.pw-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6,30,74,0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.pw-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.pw-modal {
  background: white;
  padding: 48px 40px 40px;
  border-radius: 2px;
  width: 380px;
  max-width: 90vw;
  position: relative;
  text-align: center;
  transform: translateY(20px) scale(0.96);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 24px 48px rgba(0,0,0,0.15);
}

.pw-overlay.active .pw-modal {
  transform: translateY(0) scale(1);
}

.pw-close {
  position: absolute;
  top: 16px; right: 16px;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.2s;
}

.pw-close:hover { color: var(--navy); }

.pw-icon {
  width: 56px; height: 56px;
  background: rgba(6,30,74,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--navy);
}

.pw-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--navy);
  margin-bottom: 8px;
}

.pw-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.pw-field {
  position: relative;
  margin-bottom: 20px;
}

.pw-field input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-mid);
  border-radius: 2px;
  font-size: 15px;
  letter-spacing: 0.2em;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
  color: var(--navy);
  background: var(--bg-subtle);
}

.pw-field input:focus {
  border-color: var(--accent);
}

.pw-error {
  font-size: 11px;
  color: var(--red);
  margin-top: 8px;
  opacity: 0;
  transition: opacity 0.2s;
}

.pw-error.show { opacity: 1; }

.pw-submit {
  width: 100%;
  padding: 12px;
  background: var(--navy);
  color: white;
  border: none;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background 0.2s;
}

.pw-submit:hover { background: var(--accent); }

@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-8px); }
  40%     { transform: translateX(8px); }
  60%     { transform: translateX(-6px); }
  80%     { transform: translateX(6px); }
}

.shake { animation: shake 0.4s ease; }