/* ====================================
   Main Styles - Noise & Pitch
   ==================================== */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');
@import 'variables.css';
@import 'reset.css';

/* ====================================
   Global Styles
   ==================================== */

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-weight: var(--font-weight-regular);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Section */
section {
  padding: var(--spacing-xxl) 0;
}

/* Typography */
h1 {
  font-size: var(--font-8xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  letter-spacing: var(--letter-spacing);
}

h2 {
  font-size: var(--font-6xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  letter-spacing: var(--letter-spacing);
}

h3 {
  font-size: var(--font-4xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
  letter-spacing: var(--letter-spacing);
}

h4 {
  font-size: var(--font-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
  letter-spacing: var(--letter-spacing);
}

p {
  font-size: var(--font-lg);
  line-height: 1.7;
  color: var(--text-secondary);
  letter-spacing: var(--letter-spacing);
}

/* Utilities */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--primary-color); }

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }

/* ====================================
   Header & Navigation
   ==================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.header.hidden {
  transform: translateY(-100%);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem var(--container-padding);
  max-width:1200px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: opacity var(--transition-fast);
}

.header__logo:hover {
  opacity: 0.8;
}

.header__logo-img {
  height: 32px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav__list {
  display: flex;
  gap: var(--spacing-md);
}

.nav__link {
  font-size: var(--font-base);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary-color);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background-color: var(--primary-color);
  transition: transform var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 30px;
  height: 24px;
  cursor: pointer;
}

.menu-toggle__bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle.active .menu-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .menu-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ====================================
   Buttons - Modern & Trendy
   ==================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: var(--font-base);
  font-weight: var(--font-weight-semibold);
  border-radius: 0;
  transition: all var(--transition-normal);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--bg-primary);
  border: 2px solid var(--primary-color);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--primary-color);
  box-shadow: 0 0 30px rgba(209, 255, 0, 0.3);
  transform: translateY(-3px);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--bg-primary);
  box-shadow: 0 0 30px rgba(209, 255, 0, 0.4);
  transform: translateY(-3px);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--primary-color);
  color: var(--primary-color);
  box-shadow: 0 0 20px rgba(209, 255, 0, 0.2);
}

/* ====================================
   Cards
   ==================================== */

.card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(209, 255, 0, 0.2);
}

/* ====================================
   Footer
   ==================================== */

.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer__container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__logo {
  height: 32px;
  width: auto;
  max-width:100px;
  margin-bottom: var(--spacing-sm);
}

.footer__description {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  max-width: 400px;
}

.footer__section-title {
  font-size: var(--font-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__link {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--primary-color);
}

.footer__bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-sm);
  color: var(--text-tertiary);
}
.footer__bottom>p {
  font-size: var(--font-sm);

}

.footer__social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--primary-color);
  color: var(--bg-primary);
}

/* ====================================
   Animations
   ==================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fadeIn {
  animation: fadeIn 0.8s ease forwards;
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease forwards;
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s ease forwards;
}

.animate-slideInRight {
  animation: slideInRight 0.8s ease forwards;
}

/* Animation Delays */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

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

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

@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--spacing-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  
  .header__nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__list {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav__link {
    width: 100%;
    padding: 1rem;
    text-align: center;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .footer__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .header__logo-img {
    height: 24px;
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: var(--font-sm);
  }
}