:root {
  --main-color: #00bcd4;
  --main-hover: #80deea;
  --bg-color: #050505;
  --text-color: #ffffff;
  --text-sub: #cfcfcf;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: 1px solid rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --ux-fast: 0.12s;
  --ux-normal: 0.16s;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.work-card,
.equip-card,
.status-card {
  transition: transform var(--ux-normal) ease-out,
              box-shadow var(--ux-normal) ease-out;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto', 'Noto Sans JP', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

.cursor-dot,
.cursor-outline {
  position: fixed;
  top: 0;
  left: 0;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  z-index: 10001;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
}

.cursor-dot {
  width: 8px;
  height: 8px;
  background-color: var(--main-color);
}

.cursor-outline {
  width: 40px;
  height: 40px;
  border: 2px solid var(--main-color);
  opacity: 0.5;
}

.cursor-hidden {
  opacity: 0;
}

.cursor-active .cursor-outline {
  transform: translate(-50%, -50%) scale(1.5);
  opacity: 0.8;
}

.cursor-active .cursor-dot {
  transform: translate(-50%, -50%) scale(0.5);
}

@media (pointer: coarse) {
  .cursor-dot,
  .cursor-outline {
    display: none;
  }
}

.skip-link {
  position: absolute;
  top: -999px;
  left: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 9999;
  background-color: var(--main-color);
  color: var(--bg-color);
  padding: 10px 15px;
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  font-weight: bold;
}

.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  outline: 2px solid var(--main-color);
  outline-offset: 3px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--main-color);
  outline-offset: 3px;
  border-radius: 4px;
}

#scroll-line {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--main-color);
  z-index: 10000;
  width: 0%;
  transition: width 0.1s ease-out;
}

.ambient-light {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(0, 188, 212, 0.15), transparent 60%);
  filter: blur(60px);
  z-index: -1;
  animation: floatLight 15s infinite ease-in-out;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

@keyframes floatLight {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  33% { transform: translate(-30%, -60%) scale(1.2); }
  66% { transform: translate(-60%, -40%) scale(0.9); }
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
  position: relative;
  z-index: 2;
}

.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 1rem;
}

.hero-content {
  animation: heroEnter 1s 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

@keyframes heroEnter {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

canvas#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}

.hero h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 900;
  background: linear-gradient(135deg, #fff 30%, var(--main-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  position: relative;
  overflow: hidden;
}

.hero h1::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.2), transparent);
  transform: skewX(-25deg);
  animation: shine 5s infinite;
}

@keyframes shine {
  0% { left: -100%; }
  15% { left: 150%; }
  100% { left: 150%; }
}

.hero .skills {
  color: var(--text-sub);
  font-size: 0.9rem;
  font-family: 'Consolas', monospace;
  margin-top: 1rem;
  margin-bottom: 2.5rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-links a {
  background: var(--glass-bg);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: var(--glass-border);
  color: var(--main-color);
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-weight: bold;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-links a:hover {
  background: var(--main-color);
  color: #000;
  box-shadow: 0 0 20px var(--main-color);
  transform: translateY(-3px);
}

section {
  padding: 8rem 0;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  border-left: 5px solid var(--main-color);
  padding-left: 1.5rem;
}

.works-grid, .equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.work-card, .status-card, .equip-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: 2.5rem;
  border-radius: 24px;
  transition: 0.3s ease;
}

.work-card:hover, .status-card:hover, .equip-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
}


.work-card h3, .equip-card h3 {
  color: var(--main-color);
  margin-bottom: 1rem;
}

.card-links a {
  color: #fff;
  margin-right: 1.5rem;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
}

body.light-mode .card-links a {

  color: var(--text-color);

}

.card-links a:hover {
  color: var(--main-color);
  border-bottom-color: var(--main-color);
}

.status-item { margin-bottom: 2rem; }
.status-item label { 
  display: block; 
  margin-bottom: 0.8rem; 
  font-family: monospace; 
  color: var(--main-color);
}

.progress-bar {
  width: 100%;
  height: 10px;
  background: rgba(255,255,255,0.1);
  border-radius: 20px;
  overflow: hidden;
}

.progress {
  height: 100%;
  background: linear-gradient(90deg, var(--main-color), #fff);
  box-shadow: 0 0 15px var(--main-color);
}

.progress-bar.infinite .progress {
  width: 100%;
  background: linear-gradient(90deg, transparent, var(--main-color), transparent);
  animation: barInfinite 2s infinite linear;
}

@keyframes barInfinite {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.equip-card .category {
  font-size: 0.75rem;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

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

footer {
  text-align: center;
  padding: 4rem;
  color: #666;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  h2 { font-size: 2rem; }
  .work-card { padding: 1.5rem; }
}

body.light-mode {
  --bg-color: #f4f4f8;
  --text-color: #1a1a1a;
  --text-sub: #555;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: 1px solid rgba(0, 0, 0, 0.1);
  --glass-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.1);
}

body.light-mode .progress-bar {
  background: rgba(0,0,0,0.1);
}

body.light-mode .hero h1 {
  background: linear-gradient(135deg, #111 30%, var(--main-color) 100%);
  -webkit-background-clip: text;
}

body.light-mode .ambient-light {
  background: radial-gradient(circle, rgba(0, 188, 212, 0.1), transparent 60%);
}

.theme-toggle {
  position: fixed;
  bottom: 85px;
  right: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background-color: var(--glass-bg);
  border: var(--glass-border);
  color: var(--main-color);
  border-radius: 50%;
  cursor: pointer;
  font-size: 22px;
  transition: all 0.3s ease;
  z-index: 1000;
}

.theme-toggle:hover {
  background-color: var(--main-color);
  color: #000;
  transform: scale(1.1);
}

.back-to-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background-color: var(--main-color);
  color: #000;
  border-radius: 50%;
  text-decoration: none;
  font-size: 24px;
  font-weight: bold;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  z-index: 1000;
  transform: translateY(20px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--main-hover);
  transform: translateY(-5px);
}

@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;
  }

  .progress-bar.infinite .progress {
    animation: none !important;
  }
  .ambient-light {
    animation: none !important;
  }
  .hero h1::after {
    animation: none !important;
  }
  .hero-content {
    animation: none !important;
  }
}

::selection {
  background: rgba(0, 188, 212, 0.3);
  color: #fff;
}

::-moz-selection {
  background: rgba(0, 188, 212, 0.3);
  color: #fff;
}
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--main-color);
  border-radius: 10px;
  border: 2px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--main-hover);
}

body.light-mode::-webkit-scrollbar-track {
  background: var(--bg-color);
}

body.light-mode::-webkit-scrollbar-thumb {
  background: var(--main-color);
  border: 2px solid var(--bg-color);
}