@charset "UTF-8";

/* ==========================================================================
   Variables & Design Tokens
   ========================================================================== */
:root {
  /* Colors - Monochrome Base */
  --color-bg-main: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-accent: #e8e8e8;

  --color-text-primary: #1a1a1a;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;

  --color-primary: #2d2d2d;
  --color-primary-rgb: 45, 45, 45;
  --color-secondary: #4a4a4a;

  --color-accent: #1a1a1a;
  --color-white: #ffffff;
  --color-border: #e0e0e0;

  /* Typography */
  --font-main: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
  --font-heading: 'Pretendard', serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  /* Layout */
  --container-width: 1200px;
  --header-height: 80px;

  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --transition-default: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}


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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-main);
  color: var(--color-text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-default);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.kf-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  width: 100%;
}

.kf-section {
  padding: 10rem 0;
}

.kf-title-lg {
  font-size: 3rem;
  color: var(--color-text-primary);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.kf-title-md {
  font-size: 2rem;
  color: var(--color-text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.kf-text-highlight {
  color: var(--color-primary);
}

/* ==========================================================================
   Header
   ========================================================================== */
.kf-header {
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.kf-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.kf-logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.kf-logo-mark {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 1px;
}

.kf-logo-text {
  font-size: 0.9rem;
  color: var(--color-text-primary);
  line-height: 1.2;
  font-weight: 500;
}

.kf-logo-sub {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  display: block;
  opacity: 0.8;
}

.kf-nav-list {
  display: flex;
  gap: var(--spacing-md);
}

.kf-nav-link {
  font-size: 0.95rem;
  color: var(--color-text-primary);
  font-weight: 500;
  position: relative;
  padding: 5px 0;
}

.kf-nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0px;
  left: 0;
  background-color: var(--color-primary);
  transition: var(--transition-default);
}

.kf-nav-link:hover,
.kf-nav-link.active {
  color: var(--color-primary);
}

.kf-nav-link:hover::after,
.kf-nav-link.active::after {
  width: 100%;
}

.kf-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
}

.kf-nav-toggle-bar {
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 3px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.kf-hero {
  position: relative;
  padding-top: var(--header-height);
  min-height: 100vh;
  /* Scaled down for impact */
  display: flex;
  align-items: center;
  overflow: hidden;
}

.kf-hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.kf-hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  z-index: 1;
}

.kf-hero-slide.kf-hero-slide--active {
  opacity: 1;
  z-index: 2;
}

.kf-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  filter: none;
  transform: scale(1.1);
  animation: zoomEffect 20s infinite alternate;
}

@keyframes zoomEffect {
  from {
    transform: scale(1);
  }

  to {
    transform: scale(1.15);
  }
}

/* ==========================================================================
   Activities Grid (Simple Overlay Style)
   ========================================================================== */
.kf-activities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.kf-activity-item {
  position: relative;
  height: 60vh;
  min-height: 400px;
  overflow: hidden;
  display: block;
  text-decoration: none;
}

.kf-activity-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}

.kf-activity-item:hover img {
  transform: scale(1.08);
}

.kf-activity-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xl);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
  pointer-events: none;
}

.kf-activity-title {
  color: #ffffff;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin: 0;
  line-height: 1.2;
}

@media (max-width: 1024px) {
  .kf-activities-grid {
    grid-template-columns: 1fr;
  }

  .kf-activity-item {
    min-height: 50vh;
  }
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */
.fade-in-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.19, 1, 0.22, 1),
    transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.kf-stat {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.19, 1, 0.22, 1),
    transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.kf-stat.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.kf-hero-content {
  position: relative;
  z-index: 3;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-bottom: 10vh;
  /* Adjust visual center */
}

.kf-hero-kicker {
  color: #ffffff;
  font-family: var(--font-main);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 400;
  letter-spacing: 0.1em;
}

.kf-hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

/* Page Hero Title (for About, Local, Overseas, Consulting) */
.kf-hero-title.kf-hero-title--page {
  font-size: 3.5rem;
}

.kf-hero-subtitle {
  font-size: 1.2rem;
  color: #ffffff;
  max-width: 600px;
  opacity: 0.85;
  font-weight: 400;
  line-height: 1.6;
}

/* Hero Content Animation */
.kf-hero-content {
  animation: heroFadeInUp 0.8s ease-out forwards;
}

@keyframes heroFadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

/* ==========================================================================
   Split Section (Left Title + Right Cards)
   ========================================================================== */
.kf-split-section {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.kf-split-header {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.kf-section-big-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.1;
  margin: 0;
}

.kf-split-content {
  width: 100%;
}

.kf-mini-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-md);
}

.kf-mini-card {
  display: block;
  text-decoration: none;
  background: var(--color-bg-main);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition-default);
}

.kf-mini-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.kf-mini-card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.kf-mini-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-default);
}

.kf-mini-card:hover .kf-mini-card-image img {
  transform: scale(1.05);
}

.kf-mini-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  padding: var(--spacing-sm) var(--spacing-sm) 0;
}

.kf-mini-card-tag {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
  padding: var(--spacing-xs) var(--spacing-sm) var(--spacing-sm);
}

@media (max-width: 1024px) {
  .kf-split-section {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .kf-split-header {
    position: static;
  }

  .kf-mini-cards {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

/* ==========================================================================
   Cards (Grid System)
   ========================================================================== */
.kf-card-grid {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.kf-card-grid--5 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.kf-card-grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.kf-card {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: 8px;
  transition: var(--transition-default);
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
  display: flex;
  flex-direction: column;
}

.kf-card:hover {
  transform: translateY(-7px);
  background-color: var(--color-bg-accent);
}

.kf-card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.kf-card-title {
  color: var(--color-text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.kf-card-sub {
  font-family: monospace;
  color: var(--color-primary);
  font-size: 0.8rem;
  margin-bottom: var(--spacing-sm);
}

.kf-card-link {
  margin-top: auto;
  color: var(--color-text-primary);
  font-weight: 600;
  display: inline-block;
  opacity: 0.7;
}

.kf-card:hover .kf-card-link {
  color: var(--color-primary);
  opacity: 1;
}

/* Image Cards (Middle) */
.kf-card--image {
  padding: 0;
  border: none;
  background: transparent;
}

.kf-card--image .kf-card-image {
  border-radius: 8px;
  overflow: hidden;
  height: 250px;
  margin-bottom: var(--spacing-sm);
}

.kf-card--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-default);
}

.kf-card--image:hover img {
  transform: scale(1.05);
}

.kf-card--image .kf-card-body {
  padding: var(--spacing-sm);
  background-color: var(--color-bg-secondary);
  border-radius: 8px;
  margin-top: -40px;
  margin-left: var(--spacing-sm);
  margin-right: var(--spacing-sm);
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-sm);
}

/* Clean Card Variant (No Overlay) */
.kf-card--clean {
  padding: 0;
  background: transparent;
  box-shadow: none;
}

.kf-card--clean .kf-card-image {
  border-radius: 12px;
  overflow: hidden;
  height: 280px;
  margin-bottom: 0;
  box-shadow: var(--shadow-md);
}

.kf-card--clean img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-default);
}

.kf-card--clean:hover {
  transform: translateY(-7px);
}

.kf-card--clean:hover img {
  transform: scale(1.05);
}

.kf-card--clean .kf-card-body {
  padding: var(--spacing-md) 0;
  background: transparent;
  margin: 0;
  position: static;
  box-shadow: none;
  border-radius: 0;
}

.kf-card--clean .kf-card-title {
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.kf-card--clean .kf-card-sub {
  font-family: var(--font-main);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   About CTA Section
   ========================================================================== */
.kf-section--cta {
  background-color: var(--color-bg-accent);
  text-align: center;
}

.kf-cta-title {
  color: var(--color-text-primary);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.kf-btn {
  display: inline-block;
  padding: 12px 28px;
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  color: var(--color-primary);
  font-family: monospace;
  font-weight: 600;
  transition: var(--transition-default);
  margin-top: var(--spacing-sm);
}

.kf-btn:hover {
  background-color: rgba(100, 255, 218, 0.1);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.kf-footer-top {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.kf-footer-heading {
  color: var(--color-text-primary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.kf-footer-sub {
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.kf-footer-list li,
.kf-footer-menu li {
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.kf-footer-menu a:hover {
  color: var(--color-primary);
}

.kf-section--footer-bottom {
  background-color: #020c1b;
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  font-family: monospace;
}


/* ==========================================================================
   Program Cards (awwwards style)
   ========================================================================== */
.kf-program-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 60vh;
  text-decoration: none;
  color: inherit;
  transition: var(--transition-default);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.kf-program-card:hover .kf-program-image img {
  transform: scale(1.05);
}

.kf-program-image {
  overflow: hidden;
  position: relative;
}

.kf-program-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.kf-program-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-xl);
  background: var(--color-bg-main);
}

.kf-program-tag {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
}

.kf-program-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
}

.kf-program-desc {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.kf-program-card:nth-child(even) {
  grid-template-columns: 1fr 1fr;
}

.kf-program-card:nth-child(even) .kf-program-image {
  order: 2;
}

.kf-program-card:nth-child(even) .kf-program-content {
  order: 1;
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 768px) {
  .kf-nav-toggle {
    display: flex;
    z-index: 2000;
  }

  .kf-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 75%;
    height: 100vh;
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xl) var(--spacing-md);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    box-shadow: -10px 0 30px -15px rgba(2, 12, 27, 0.7);
  }

  .kf-nav.active {
    transform: translateX(0);
  }

  .kf-nav-list {
    flex-direction: column;
  }

  .kf-footer-top {
    grid-template-columns: 1fr;
  }

  .kf-program-card {
    grid-template-columns: 1fr !important;
    min-height: 80vh;
  }

  .kf-program-card:nth-child(even) .kf-program-image {
    order: 1;
  }

  .kf-program-card:nth-child(even) .kf-program-content {
    order: 2;
  }
}

/* ==========================================================================
   Core Values Cards with Images
   ========================================================================== */
.kf-values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.kf-value-card {
  background: var(--color-bg-main);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-default);
  display: flex;
  flex-direction: column;
}

.kf-value-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}

.kf-value-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: var(--color-bg-secondary);
  position: relative;
}

.kf-value-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}

.kf-value-card:hover .kf-value-image img {
  transform: scale(1.08);
}

.kf-value-content {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.kf-value-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.3;
}

.kf-value-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 1024px) {
  .kf-values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .kf-values-grid {
    grid-template-columns: 1fr;
  }
}