/* YUYA-Inspired Ultra-Minimal Design System */

/* Custom Font */
@font-face {
  font-family: 'Jersey 10';
  src: url('../fonts/Jersey10-Regular.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

/* CSS Variables */
:root {
  --color-text: #1a1a1a;
  --color-bg: #ffffff;
  --color-bg-light: #fafafa;
  --spacing-xs: 1rem;
  --spacing-sm: 2rem;
  --spacing-md: 4rem;
  --spacing-lg: 6rem;
  --spacing-xl: 8rem;
  --spacing-xxl: 12rem;
  --font-size-hero: clamp(3rem, 8vw, 7rem);
  --font-size-h1: clamp(2.5rem, 6vw, 4rem);
  --font-size-h2: clamp(1.5rem, 4vw, 2.5rem);
  --font-size-body: 1.125rem;
  --font-size-small: 0.875rem;
  --transition: 0.2s ease;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: var(--font-size-hero);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-h1);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-h2);
}

p {
  font-size: var(--font-size-body);
  line-height: 1.7;
  margin-bottom: 1rem;
}

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

a:hover {
  opacity: 0.7;
}

/* Layout Utilities */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: 2rem 0;
}

.section-large {
  padding: 2rem 0;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-bg);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.nav.scrolled {
  border-bottom-color: rgba(0, 0, 0, 0.05);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-link {
  font-size: var(--font-size-small);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text);
  transition: width var(--transition);
}

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
  width: 30px;
  height: 30px;
  justify-content: center;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition);
  display: block;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl) var(--spacing-sm);
  text-align: center;
  overscroll-behavior: none;
  touch-action: pan-y;
}

#arkanoidHero {
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

#victoryMessage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 20;
  text-align: center;
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.6;
  max-width: 90%;
  color: var(--color-text);
}

.victory-word {
  display: inline-block;
  opacity: 0;
  transform: scale(0.5);
  margin: 0 0.15em;
  animation: popIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  will-change: transform, opacity;
}

@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.5) translateY(20px);
  }
  60% {
    transform: scale(1.05) translateY(-5px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.victory-word:nth-child(1) { animation-delay: 0.1s; }
.victory-word:nth-child(2) { animation-delay: 0.3s; }
.victory-word:nth-child(3) { animation-delay: 0.5s; }
.victory-word:nth-child(4) { animation-delay: 0.7s; }
.victory-word:nth-child(5) { animation-delay: 0.9s; }
.victory-word:nth-child(6) { animation-delay: 1.1s; }

#tryAgainButton,
#playAgainButton {
  position: absolute;
  padding: 0.8rem 2rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  font-style: normal;
  font-size: var(--font-size-small);
  background: none;
  border: 1px solid var(--color-text);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  z-index: 15;
  display: none;
}

#tryAgainButton:hover,
#playAgainButton:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.hero-content {
  max-width: 900px;
}

.hero-name {
  font-size: var(--font-size-hero);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: var(--font-size-body);
  font-weight: 400;
  opacity: 0.7;
  margin-top: var(--spacing-sm);
}

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

.work-section .container {
  padding-top: 0;
}

.section-header {
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: clamp(3.5rem, 8vw, 6rem);
  margin-bottom: var(--spacing-sm);
  font-family: "Jersey 10", sans-serif !important;
  font-weight: 400 !important;
}

.section-subtitle {
  font-size: var(--font-size-body);
  opacity: 0.7;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.work-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.work-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.work-item:hover img {
  transform: scale(1.02);
}

.work-info {
  margin-top: var(--spacing-xs);
}

.work-title {
  font-size: var(--font-size-h2);
  margin-bottom: 0.25rem;
}

.work-category {
  font-size: var(--font-size-small);
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Expandable Sections */
.expandable-section {
  margin-bottom: var(--spacing-xl);
}

.expandable-section:first-child {
  margin-top: 0;
}

.expandable-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.expandable-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 400 !important;
  font-family: "Jersey 10", sans-serif !important;
}

.expandable-toggle {
  font-size: 1.5rem;
  transition: transform 0.5s cubic-bezier(0.4, 0.0, 0.2, 1);
  user-select: none;
}

.expandable-section.expanded .expandable-toggle {
  transform: rotate(180deg);
}

.expandable-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s cubic-bezier(0.4, 0.0, 0.2, 1), 
              padding 0.6s cubic-bezier(0.4, 0.0, 0.2, 1),
              opacity 0.5s ease;
  padding: 0;
  opacity: 0;
}

.expandable-section.expanded .expandable-content {
  max-height: 5000px;
  padding: 16px 0;
  opacity: 1;
}

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

.about-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.about-image-wrapper {
  width: 100%;
}

.about-image {
  width: 100%;
  height: auto;
  display: block;
}

.about-text-wrapper {
  padding: var(--spacing-md) 0;
}

.about-text {
  font-size: var(--font-size-body);
  line-height: 1.8;
}

.about-text p {
  margin-bottom: var(--spacing-sm);
}

/* Contact Section */
.contact-section {
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.contact-content {
  max-width: 800px;
  margin: 0 auto;
}

.contact-title {
  font-size: var(--font-size-h1);
  margin-bottom: 3rem;
  font-family: "Jersey 10", sans-serif !important;
  font-weight: 400 !important;
}

.contact-info {
  margin: 3rem 0;
}

.contact-item {
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-body);
}

.email-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin: var(--spacing-md) 0;
}

.email-link {
  font-size: var(--font-size-body);
  font-weight: 500;
}

.copy-btn {
  background: none;
  border: 1px solid var(--color-text);
  padding: 0.5rem 1rem;
  font-size: var(--font-size-small);
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: inherit;
  color: var(--color-text);
}

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

.copy-btn.copied {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.available-badge {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--color-text);
  font-size: var(--font-size-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: var(--spacing-md) 0;
  transition: all var(--transition);
}

.available-badge:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  list-style: none;
}

.social-link {
  opacity: 0.7;
  transition: opacity var(--transition);
}

.social-link:hover {
  opacity: 1;
}

.social-link img {
  width: 24px;
  height: 24px;
}

/* Footer */
.footer {
  padding: var(--spacing-lg) 0;
  text-align: center;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  font-size: var(--font-size-small);
  opacity: 0.6;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border: 1px solid var(--color-text);
  font-size: var(--font-size-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all var(--transition);
  cursor: pointer;
  background: none;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

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

  .hero {
    min-height: 80vh;
    padding: var(--spacing-xl) var(--spacing-sm);
  }

  .about-section .container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .work-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .section-large {
    padding: 2rem 0;
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* Project Detail Pages */
.project-hero {
  padding: var(--spacing-xl) 0;
  min-height: auto;
  text-align: left;
}

.project-hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.project-hero-content {
  max-width: none;
}

.project-hero-content .hero-name {
  text-align: left;
  margin-bottom: var(--spacing-sm);
}

.project-hero-content .hero-subtitle {
  text-align: left;
}

.project-hero-image {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  .project-hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .project-hero-content .hero-name,
  .project-hero-content .hero-subtitle {
    text-align: center;
  }
}

.project-content {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-sm) 0;
}

.project-content .section-title {
  margin-bottom: var(--spacing-sm);
}

.project-text {
  font-size: var(--font-size-body);
  line-height: 1.8;
}

.project-text p {
  margin-bottom: var(--spacing-sm);
}

.project-text p:last-child {
  margin-bottom: 0;
}

.project-list {
  list-style: none;
  padding-left: 0;
  margin: var(--spacing-sm) 0 var(--spacing-md) 0;
}

.project-list li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.project-list li:last-child {
  margin-bottom: 0;
}

.project-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text);
}

.project-image-wrapper {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-sm) 0;
}

.project-image {
  width: 100%;
  height: auto;
  display: block;
  margin: 0;
}

.downloadable-image {
  max-width: 100%;
}

@media (min-width: 769px) {
  .downloadable-image {
    width: 500px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
}

.project-image-grid {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.project-image-grid.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

@media (max-width: 768px) {
  .project-image-grid.grid-2 {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .project-content {
    padding: var(--spacing-sm) var(--spacing-xs);
  }
  
  .project-image-wrapper {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-sm) 0;
  }
  
  .project-image-grid {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
  }
}

.project-image-grid img {
  width: 100%;
  height: auto;
  display: block;
}

.project-image-grid > div {
  margin: 0;
}

.project-image-grid img {
  width: 100%;
  height: auto;
  display: block;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}