/* ===== MOBILE-FIRST RESPONSIVE DESIGN ===== */

/* Base Mobile Styles (max-width: 768px) */
.container {
  max-width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ===== KEYCHAIN SECTION MOBILE RESPONSIVENESS ===== */

/* Mobile: 320px - 480px */
@media (max-width: 480px) {
  .skills-section-keychain {
    min-height: clamp(80px, 65vh, 500px) !important;
    padding: var(--spacing-xl) 0 var(--spacing-3xl) !important;
  }
  
  .skills-section-keychain .scene {
    padding: 0 8px !important;
  }
  
  .skills-section-keychain .keychain-card {
    width: 94vw !important;
    min-height: 380px !important;
    padding: 0 0 clamp(12px, 2vw, 16px) 0 !important;
    border-radius: clamp(16px, 2.5vw, 20px) !important;
  }
  
  .skills-section-keychain .skills-body {
    grid-template-columns: 1fr !important;
    gap: clamp(12px, 2vw, 16px) !important;
    padding: 0 clamp(12px, 3vw, 16px) clamp(14px, 3vw, 20px) !important;
  }
  
  .skills-section-keychain .skill-category {
    padding: clamp(10px, 2vw, 14px) !important;
    border-radius: 16px !important;
    margin-bottom: 0 !important;
  }
  
  .skills-section-keychain .skills-list {
    grid-template-columns: repeat(auto-fit, minmax(50px, 1fr)) !important;
    gap: 8px !important;
  }
  
  .skills-section-keychain .skill-item {
    gap: 6px !important;
  }
  
  .skills-section-keychain .skill-icon-box {
    width: 38px !important;
    height: 38px !important;
    font-size: 16px !important;
    border-radius: 12px !important;
  }
  
  .skills-section-keychain .skill-name {
    font-size: 10px !important;
  }
  
  .skills-section-keychain .category-label {
    font-size: 10px !important;
    margin-bottom: 10px !important;
  }
  
  .skills-section-keychain .skills-title {
    font-size: 16px !important;
    margin: var(--spacing-sm) 0 var(--spacing-xl) !important;
    letter-spacing: 0.1em !important;
  }
  
  .skills-section-keychain .card-top {
    padding-top: clamp(12px, 2vw, 16px) !important;
  }
  
  .skills-section-keychain .card-hole {
    width: 18px !important;
    height: 18px !important;
    border-width: 2px !important;
  }
  
  .skills-section-keychain .carabiner {
    width: clamp(200px, 35vw, 280px) !important;
    height: clamp(32px, 5vw, 42px) !important;
  }
  
  .skills-section-keychain .wire {
    height: clamp(18px, 3vw, 24px) !important;
  }
  
  .skills-section-keychain .ceiling-mount {
    width: 48px !important;
    height: 18px !important;
  }
  
  /* Hide some particles on mobile to improve performance */
  .skills-section-keychain .particle:nth-child(n+7) {
    display: none !important;
  }
}

/* Tablet: 481px - 768px */
@media (min-width: 481px) and (max-width: 768px) {
  .skills-section-keychain {
    min-height: clamp(100px, 72vh, 600px) !important;
    padding: var(--spacing-2xl) 0 var(--spacing-4xl) !important;
  }
  
  .skills-section-keychain .keychain-card {
    width: 92vw !important;
    min-height: 450px !important;
    border-radius: clamp(18px, 2.5vw, 24px) !important;
  }
  
  .skills-section-keychain .skills-body {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)) !important;
    gap: clamp(14px, 2vw, 20px) !important;
    padding: 0 clamp(16px, 3vw, 24px) clamp(16px, 3vw, 28px) !important;
  }
  
  .skills-section-keychain .skill-category {
    padding: clamp(12px, 2vw, 16px) !important;
    border-radius: 18px !important;
  }
  
  .skills-section-keychain .skills-list {
    grid-template-columns: repeat(auto-fit, minmax(55px, 1fr)) !important;
    gap: 10px !important;
  }
  
  .skills-section-keychain .skill-icon-box {
    width: 44px !important;
    height: 44px !important;
    font-size: 18px !important;
  }
  
  .skills-section-keychain .skill-name {
    font-size: 11px !important;
  }
  
  .skills-section-keychain .category-label {
    font-size: 11px !important;
  }
  
  .skills-section-keychain .skills-title {
    font-size: 18px !important;
    margin: var(--spacing-md) 0 var(--spacing-2xl) !important;
  }
  
  .skills-section-keychain .carabiner {
    width: clamp(240px, 38vw, 320px) !important;
    height: clamp(36px, 5.5vw, 48px) !important;
  }
  
  .skills-section-keychain .wire {
    height: clamp(20px, 3.5vw, 28px) !important;
  }
}

/* Small Mobile: 320px - 375px */
@media (max-width: 375px) {
  .skills-section-keychain .skills-body {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
    padding: 0 8px clamp(12px, 2vw, 16px) !important;
  }
  
  .skills-section-keychain .skills-list {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
  }
  
  .skills-section-keychain .skill-icon-box {
    width: 36px !important;
    height: 36px !important;
    font-size: 15px !important;
  }
  
  .skills-section-keychain .skill-name {
    font-size: 9px !important;
    line-height: 1.2 !important;
  }
  
  .skills-section-keychain .category-label {
    font-size: 9px !important;
    margin-bottom: 8px !important;
  }
  
  .skills-section-keychain .skills-title {
    font-size: 15px !important;
    margin: var(--spacing-xs) 0 var(--spacing-lg) !important;
  }
  
  .skills-section-keychain .keychain-card {
    width: 96vw !important;
    min-height: 360px !important;
  }
}

/* Navigation - Mobile First */
.navbar-clean {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.75rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-100);
}

.nav-menu {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: var(--primary-900);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem;
  display: none;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-menu.active {
  display: flex;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-200);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-500);
}

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-200);
  transition: var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section - Mobile */
.hero-section {
  padding: 6rem 0 2rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-container {
  width: 100%;
}

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

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-300);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  color: var(--text-300);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-normal);
  min-height: 54px;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--accent-500);
  border: 2px solid var(--accent-500);
}

.hero-tech-showcase {
  margin-top: 2rem;
}

.tech-showcase-icons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.tech-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.tech-icon-item:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

/* Services Section - Mobile */
.services-section {
  padding: 4rem 0;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* About Section - Mobile */
.about-section {
  padding: 4rem 0;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.about-image-wrapper {
  margin-bottom: 2rem;
}

.about-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent-500);
}

.about-personal-info {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.personal-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
}

/* Projects Section - Mobile */
.projects-section {
  padding: 4rem 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Tablet Styles (769px - 1024px) */
@media (min-width: 769px) {
  .container {
    padding: 0 2rem;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-personal-info {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tech-showcase-icons {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Desktop Styles (min-width: 1025px) */
@media (min-width: 1025px) {
  .container {
    max-width: 1200px;
    padding: 0;
  }
  
  .nav-menu {
    position: static;
    display: flex;
    flex-direction: row;
    background: none;
    border: none;
    padding: 0;
    gap: 0.5rem;
  }
  
  .mobile-menu-toggle {
    display: none;
  }
  
  .hero-content {
    text-align: left;
    max-width: 600px;
  }
  
  .hero-actions {
    justify-content: flex-start;
  }
  
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .about-content {
    flex-direction: row;
    align-items: flex-start;
    gap: 4rem;
  }
  
  .about-hero {
    text-align: left;
    flex: 1;
  }
  
  .about-main {
    flex: 2;
  }
  
  .tech-showcase-icons {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* Large Desktop Styles (min-width: 1440px) */
@media (min-width: 1440px) {
  .container {
    max-width: 1400px;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
}

/* Micro-interactions and Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

/* Focus states for accessibility */
button:focus,
a:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--accent-500);
  outline-offset: 2px;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --text-100: #ffffff;
    --text-200: #ffffff;
    --text-300: #cccccc;
    --primary-900: #000000;
    --primary-800: #111111;
  }
  
  .btn-primary {
    background: #0000ff;
    color: #ffffff;
  }
  
  .btn-secondary {
    border: 3px solid #0000ff;
    color: #0000ff;
  }
}