/* Landing Page Animations */

/* Solution Section */
.solution-section {
  padding: var(--section-padding-primary);
  background: linear-gradient(135deg, var(--orange-50), var(--white), var(--orange-50));
  position: relative;
  overflow: hidden;
}

.solution-pattern {
  background-image: radial-gradient(circle at 25% 25%, rgba(249, 115, 22, 0.1) 0%, transparent 50%),
                    radial-gradient(circle at 75% 75%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
}

.solution-element-1 {
  left: 15%;
  top: 10%;
  width: 160px;
  height: 160px;
  animation: solutionFloat1 10s ease-in-out infinite;
}

.solution-element-2 {
  left: 35%;
  top: 30%;
  width: 160px;
  height: 160px;
  animation: solutionFloat2 12s ease-in-out infinite 2s;
}

.solution-element-3 {
  left: 55%;
  top: 50%;
  width: 160px;
  height: 160px;
  animation: solutionFloat3 14s ease-in-out infinite 4s;
}

.solution-element-4 {
  left: 75%;
  top: 70%;
  width: 160px;
  height: 160px;
  animation: solutionFloat4 12s ease-in-out infinite 6s;
}

.solution-element-5 {
  left: 95%;
  top: 90%;
  width: 160px;
  height: 160px;
  animation: solutionFloat5 10s ease-in-out infinite 8s;
}

@keyframes solutionFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(-40px, 40px) scale(1.4); opacity: 0.25; }
}

@keyframes solutionFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(30px, -30px) scale(1.4); opacity: 0.25; }
}

@keyframes solutionFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(-30px, 40px) scale(1.4); opacity: 0.25; }
}

@keyframes solutionFloat4 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(40px, -40px) scale(1.4); opacity: 0.25; }
}

@keyframes solutionFloat5 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(-50px, 30px) scale(1.4); opacity: 0.25; }
}

.solutions-flow {
  max-width: 96rem;
  margin: 0 auto 5rem;
  position: relative;
}

.flow-arrow {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 8px;
  z-index: 0;
}

.arrow-line {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, var(--orange-200), var(--orange-300), var(--orange-500));
  opacity: 0.4;
}

.arrow-head {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  color: var(--orange-500);
}

.solution-card {
  background-color: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: 1.5rem;
  padding: 2rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 10;
  margin-bottom: 3rem;
  overflow: hidden;
  opacity: 0;
  transform: translateY(2rem);
}

.solution-card:last-child {
  margin-bottom: 0;
}

.solution-card.visible {
  opacity: 1;
  transform: translateY(0);
}


.solution-header {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
}

@media (max-width: 767px) {
  .solution-header {
    flex-direction: column;
    gap: 1rem;
  }
}

.solution-number {
  flex-shrink: 0;
}

.number-badge {
  width: 5rem;
  height: 5rem;
  background: var(--orange-500);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  font-weight: var(--font-bold);
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
  transition: transform var(--duration-normal) var(--ease-in-out);
}


@media (min-width: 768px) {
  .number-badge {
    width: 5rem;
    height: 5rem;
    font-size: 1.5rem;
  }
}

.solution-main {
  flex-grow: 1;
  min-width: 0;
}

.problem-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--gray-100);
  border-radius: 9999px;
  padding: 0.75rem 1.5rem;
  margin-bottom: 1rem;
  gap: 0.75rem;
}

.problem-emoji {
  font-size: 1.125rem;
}

.problem-text {
  font-size: 1.125rem;
  font-weight: var(--font-medium);
  color: var(--gray-700);
}

.solution-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.solution-arrow {
  flex-shrink: 0;
  margin-top: 10px;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange-500);
}

.solution-text {
  flex-grow: 1;
  margin-top: 12px;
}

.solution-title {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-top: 0;
  margin-bottom: 0;
  line-height: 1.1;
  
  /* 크로스 브라우저 폰트 렌더링 일관성 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.solution-description {
  color: var(--gray-600);
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.3;
  margin: 5px 0 0 0;
}

.solution-progress {
  flex-shrink: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .solution-progress {
    display: flex;
  }
}

.progress-circle {
  width: 6rem;
  height: 6rem;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-bg {
  position: absolute;
  inset: 0;
  border: 6px solid var(--gray-200);
  border-radius: 50%;
}

.progress-fill {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(var(--orange-500) var(--progress, 0%), transparent var(--progress, 0%));
  mask: radial-gradient(closest-side, transparent 88%, black 89%);
  -webkit-mask: radial-gradient(closest-side, transparent 88%, black 89%);
  transform: rotate(-90deg);
}

.progress-text {
  font-size: 1.125rem;
  font-weight: var(--font-bold);
  color: var(--gray-700);
  position: relative;
  z-index: 10;
}

.completion-text {
  text-align: center;
  min-height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: var(--font-bold);
  color: #EA580C;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  opacity: 1;
  transform: scale(1);
  
  /* 크로스 브라우저 폰트 렌더링 일관성 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
  animation-delay: calc(0.3s + var(--card-index, 0) * 0.1s);
}

@keyframes completionTextShow {
  to {
    opacity: 1;
    transform: scale(1);
  }
}


/* Stagger Animation Utility */
.stagger-item {
  opacity: 0;
  transform: translateY(2rem);
  transition: all var(--duration-slow) var(--ease-out);
}

.stagger-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scroll-triggered animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(2rem);
  transition: all var(--duration-slow) var(--ease-out);
}

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

/* Perspective for 3D effects */
.perspective-1000 {
  perspective: 1000px;
}

.preserve-3d {
  transform-style: preserve-3d;
}

/* Mouse tracking effects */
.mouse-parallax {
  transition: transform 0.1s ease-out;
}

/* Typing animation */
.typing-text {
  border-right: 2px solid var(--orange-400);
  white-space: nowrap;
  overflow: hidden;
  animation: typing 3s steps(20, end), blink-caret 1s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--orange-400); }
}

/* Parallax scrolling effect */
.parallax-element {
  transition: transform 0.1s ease-out;
}

/* Intersection Observer classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s ease-out;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease-out;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.8s ease-out;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Loading states */
.loading-shimmer {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Error states */
.error-shake {
  animation: error-shake 0.5s ease-in-out;
}

@keyframes error-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

/* Success states */
.success-bounce {
  animation: success-bounce 0.6s ease-in-out;
}

@keyframes success-bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* Responsive breakpoints for animations */
@media (max-width: 767px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-cta-buttons {
    flex-direction: column;
    gap: 1rem;
  }
  
  .cta-button {
    min-width: 220px;
    padding: 1.25rem 2rem;
    font-size: 1.125rem;
  }
  
  .problems-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .problem-card {
    padding: 1.5rem;
  }
  
  .solution-card {
    padding: 1.5rem;
  }
  
  .solution-header {
    flex-direction: column;
    gap: 1rem;
  }
  
  .empathy-card {
    padding: 2rem;
  }
}

@media (max-width: 479px) {
  .hero-section {
    height: calc(100vh - 60px);
    min-height: 500px;
  }
  
  .hero-content {
    padding-bottom: 4rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .cta-button {
    min-width: 200px;
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
  
  .problem-card {
    padding: 1.25rem;
  }
  
  .card-icon {
    width: 3rem;
    height: 3rem;
  }
  
  .icon-emoji {
    font-size: 1.25rem;
  }
  
  .card-title {
    font-size: 1.125rem;
  }
  
  .solution-card {
    padding: 1.25rem;
  }
  
  .number-badge {
    width: 4rem;
    height: 4rem;
    font-size: 1.25rem;
  }
  
  .empathy-card {
    padding: 1.5rem;
  }
  
  .empathy-emoji {
    font-size: 3rem;
  }
  
  .empathy-title {
    font-size: 1.5rem;
  }
}

/* Print styles */
@media print {
  .hero-section,
  .floating-particles,
  .floating-blob,
  .floating-bg-elements,
  .scroll-indicator {
    display: none;
  }
  
  .problem-card,
  .solution-card,
  .empathy-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .hero-bg-image,
  .floating-particles,
  .floating-blob,
  .floating-bg-elements {
    animation: none;
    transform: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .hero-badge .badge-inner,
  .section-badge .badge-inner,
  .empathy-badge .badge-inner {
    background: var(--white);
    border: 2px solid var(--black);
  }
  
  .problem-card,
  .solution-card,
  .empathy-card {
    border: 2px solid var(--black);
  }
  
  .title-highlight {
    background: none;
    -webkit-text-fill-color: var(--black);
    color: var(--black);
    text-decoration: underline;
  }
}

/* Focus styles for accessibility */
.cta-button:focus,
.problem-card:focus,
.solution-card:focus {
  outline: 3px solid var(--orange-400);
  outline-offset: 2px;
}