:root {
  --bg: #f2f6fa;
  --surface: #f9fbfd;
  --surface-strong: #ffffff;
  --ink: #13202f;
  --ink-medium: #425368;
  --ink-light: #6f8094;
  --primary: #2f6ea8;
  --primary-light: #e6eff8;
  --primary-strong: #1e527f;
  --success: #2f8b73;
  --success-light: #e7f5f1;
  --border: #cfd9e4;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --left-accent: #e8f1fb;
  --layout-width: min(1720px, 98vw);
  --layout-pad-left: 1.05rem;
  --layout-pad-right: 1.4rem;
  --layout-gap: clamp(0.8rem, 1.8vw, 1.35rem);
  --header-h: 96px;
  --header-right-ratio: 30%;
  --right-guide-gap: clamp(3.2rem, 5.4vw, 6.2rem);
  --right-guide-line-w: 0.2rem;
  --left-rail-width: clamp(260px, 32vw, 500px);
  --left-strip-end: calc(max(0px, (100vw - var(--layout-width)) / 2) + var(--layout-pad-left) + var(--left-rail-width));
}

body[data-theme="dark"] {
  --bg: #151515;
  --surface: #1f1f1f;
  --surface-strong: #262626;
  --ink: #ece8e1;
  --ink-medium: #c8c1b7;
  --ink-light: #9c9489;
  --primary: #c9a66b;
  --primary-light: #3a3022;
  --primary-strong: #e0c08c;
  --success: #6ba37d;
  --success-light: #243126;
  --border: #3a3530;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
  --left-accent: rgb(246, 235, 217);
}

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

body {
  font-family: "Inter", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  background-image:
    linear-gradient(135deg, color-mix(in srgb, var(--primary) 8%, transparent) 0%, transparent 25%),
    linear-gradient(45deg, color-mix(in srgb, var(--success) 6%, transparent) 0%, transparent 30%);
  position: relative;
  min-height: 100vh;
  overflow: auto;
}

.intro-copy,
.main {
  position: relative;
  z-index: 2;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    linear-gradient(
      90deg,
      var(--left-accent) 0 var(--left-strip-end),
      transparent var(--left-strip-end) 100%
    ),
    radial-gradient(circle at 10% 12%, color-mix(in srgb, var(--primary) 10%, transparent) 0%, transparent 36%),
    radial-gradient(circle at 92% 6%, color-mix(in srgb, var(--success) 10%, transparent) 0%, transparent 32%),
    linear-gradient(
      90deg,
      transparent 0 4%,
      color-mix(in srgb, var(--ink) 4%, transparent) 4% 4.2%,
      transparent 4.2% 100%
    );
}

body::after {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  right: var(--right-guide-gap);
  width: var(--right-guide-line-w);
  pointer-events: none;
  z-index: -1;
  background: color-mix(in srgb, var(--ink) 4%, transparent);
  transition: right 220ms ease;
}

.intro-copy {
  width: 100%;
  margin: 0;
  padding: 0;
}

.intro-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: #4f6480;
  margin-bottom: 0.2rem;
}

.intro-title {
  font-family: "Lora", serif;
  font-size: clamp(1.15rem, 2.15vw, 1.62rem);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 0.2rem;
  text-wrap: balance;
  max-width: 40ch;
  color: #1f2f42;
}

.intro-sub {
  color: #556b84;
  font-size: 0.72rem;
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.header-controls {
  position: static;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.35rem;
  padding: 0;
  border: 0;
  background: transparent;
}

.floating-controls {
  position: fixed;
  top: 0.7rem;
  top: max(0.7rem, env(safe-area-inset-top));
  right: max(0.9rem, env(safe-area-inset-right));
  left: auto;
  z-index: 45;
}

.ambient-bg-wrap {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: var(--left-strip-end);
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.ambient-bg-host {
  position: relative;
  width: 100%;
  height: 100%;
}

.ambient-bg-host::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("./assets/base_img.png");
  background-size: cover;
  background-position: center;
  opacity: 0.14;
  filter: saturate(0.84) brightness(0.82) blur(0.8px);
}

.ambient-bg-host.is-live::before {
  opacity: 0;
}

.ambient-bg-canvas {
  position: relative;
  z-index: 1;
  width: 100% !important;
  height: 100% !important;
  display: block;
  opacity: 0.14;
  filter: saturate(0.84) brightness(0.82) blur(0.8px);
}

.menu-toggle {
  width: 34px;
  height: 34px;
  border: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  border-radius: 4px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.menu-toggle:hover {
  background: color-mix(in srgb, var(--primary-light) 45%, var(--surface));
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  transform: translateY(-1px);
}

.menu-bar {
  display: block;
  width: 14px;
  height: 2px;
  border-radius: 1px;
  background: var(--ink);
}

.theme-toggle {
  border: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.38rem 0.82rem;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: "IBM Plex Mono", monospace;
  cursor: pointer;
  height: fit-content;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.theme-toggle:hover {
  background: color-mix(in srgb, var(--primary-light) 45%, var(--surface));
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  transform: translateY(-1px);
}

.main {
  width: var(--layout-width);
  margin: 0 auto;
  padding: 1.05rem 0;
  display: grid;
  grid-template-columns: var(--left-rail-width) minmax(0, 1fr);
  gap: var(--layout-gap);
  justify-content: start;
  align-items: start;
  min-height: 0;
  overflow: visible;
}

.left-pane {
  min-width: 0;
  padding-left: var(--layout-pad-left);
}

.right-pane {
  min-width: 0;
  padding-left: clamp(1.1rem, 2.4vw, 2.2rem);
  padding-right: calc(var(--right-guide-gap) + 0.9rem);
  display: grid;
  align-content: start;
  gap: 0.65rem;
}

.left-rail {
  position: relative;
  top: auto;
  height: auto;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-self: start;
  min-height: 0;
  overflow: visible;
}

.left-name {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 700;
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  letter-spacing: 0.06em;
  color: #1f2f42;
  text-align: right;
  line-height: 1;
  margin: 0.08rem 0 0.2rem;
  padding-right: 1.25rem;
  position: relative;
}

.left-name::after {
  content: "";
  position: absolute;
  right: 1.25rem;
  bottom: -0.22rem;
  width: calc(85%);
  height: 2px;
  background: #4a2e1f;
}

.left-rail-stack {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0.65rem;
  height: 100%;
  min-height: 0;
}

.side-tab-nav {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.62rem;
}

@media (min-width: 901px) {
  .left-pane {
    position: sticky;
    top: 0.9rem;
    align-self: start;
    max-height: calc(100svh - 1.8rem);
    overflow: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .left-pane::-webkit-scrollbar {
    display: none;
  }

  .side-tab-nav {
    position: static;
    align-self: start;
    justify-content: flex-start;
    margin-top: 0.8rem;
  }
}

.side-tab {
  border: 0;
  background: transparent;
  color: color-mix(in srgb, var(--ink-medium) 88%, var(--primary) 12%);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  padding: 0.2rem 0.15rem;
  cursor: pointer;
  position: relative;
}

.side-tab::after {
  content: "";
  position: absolute;
  left: -6px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  border-radius: 2px;
  background: transparent;
}

.side-tab:hover {
  color: var(--ink);
}

.side-tab.is-active {
  color: var(--ink);
  font-weight: 600;
}

.side-tab.is-active::after {
  background: var(--primary);
}

body[data-theme="dark"] .intro-label,
body[data-theme="dark"] .intro-title,
body[data-theme="dark"] .intro-sub,
body[data-theme="dark"] .left-name,
body[data-theme="dark"] .side-tab,
body[data-theme="dark"] .side-tab:hover,
body[data-theme="dark"] .side-tab.is-active {
  color: #4a2e1f;
}

.left-media {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 0.3rem;
  min-height: 0;
}

.sheltie-frame {
  margin: 0;
  border-radius: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  position: relative;
}

.sheltie-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 34px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--left-accent) 85%, transparent) 100%);
}

.sheltie-image {
  display: block;
  width: 100%;
  height: 100%;
  max-height: none;
  object-fit: contain;
  object-position: top center;
}

.rail-icons {
  display: flex;
  align-items: center;
  gap: 0.72rem;
  justify-content: center;
  padding-top: 0.28rem;
  margin-top: 0.2rem;
  flex: 0 0 auto;
}

.rail-icon-link {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-medium);
  transition: transform 0.18s ease, border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.rail-icon-link:hover {
  transform: translateY(-1px);
  border-color: var(--primary);
  color: var(--primary);
  background: color-mix(in srgb, var(--primary-light) 45%, var(--surface));
}

.rail-icon-link svg {
  width: 25px;
  height: 25px;
  fill: currentColor;
}

.content-stage {
  display: grid;
  gap: 0.85rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  position: relative;
  overflow: visible;
  padding: 0;
  isolation: isolate;
  max-width: none;
  width: 100%;
  justify-self: stretch;
  height: auto;
  min-height: 0;
  max-height: none;
  overflow: visible;
}

.content-stage::before {
  content: none;
}

.tab-nav {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.settings-drawer {
  position: fixed;
  right: 0;
  top: 0;
  height: 100dvh;
  width: min(360px, 88vw);
  padding: 84px 0.8rem 1rem;
  border-left: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  background: color-mix(in srgb, var(--surface) 97%, transparent);
  box-shadow: var(--shadow-lg);
  z-index: 40;
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.24s ease, opacity 0.2s ease;
}

.settings-drawer.is-open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.36);
  backdrop-filter: blur(1px);
  z-index: 35;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.drawer-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.drawer-title {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 0.55rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

.tab-button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  border-radius: 4px;
  padding: 0.62rem 0.58rem;
  text-align: left;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.34rem;
}

.tab-button-name {
  display: block;
  font-weight: 700;
  line-height: 1.2;
}

.tab-button-preview {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.2rem;
}

.tab-button-preview li {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-size: 0.7rem;
  text-transform: none;
  letter-spacing: 0.01em;
  color: var(--ink-medium);
  line-height: 1.35;
  padding-left: 0.7rem;
  position: relative;
}

.tab-button-preview li::before {
  content: "-";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
}

.tab-button:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary-light) 20%, var(--surface));
}

.tab-button.is-active {
  border-color: var(--primary);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 12%, var(--surface)) 0%, color-mix(in srgb, var(--surface) 92%, var(--primary-light)) 100%);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary) 30%, transparent);
  font-weight: 600;
}

.tab-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  scroll-margin-top: 0.9rem;
}

.tab-panel.is-active {
  animation: panelIn 0.3s ease;
}

.tab-panel + .tab-panel {
  margin-top: 0.65rem;
  padding-top: 0.7rem;
  border-top: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
}

.tab-body-title {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: clamp(2.6rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 0.2rem;
  padding: 0 0 0.7rem;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.48em;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.tab-body-title > span:last-child {
  min-width: 0;
}

.tab-title-icon {
  width: 0.9em;
  height: 0.9em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: color-mix(in srgb, var(--primary) 80%, var(--ink));
  flex: 0 0 auto;
}

.tab-title-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#worksPanel .tab-title-icon .works-front {
  fill: currentColor;
  stroke: currentColor;
}

#worksPanel .tab-title-icon .works-front-detail {
  stroke: var(--bg);
}

#worksPanel .tab-title-icon .works-back {
  fill: none;
}

.tab-body-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  transform: none;
  width: 100%;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
}

@media (max-width: 1200px) {
  :root,
  body[data-theme="dark"] {
    --right-guide-gap: 7.1rem;
  }

  .right-pane {
    padding-right: calc(var(--right-guide-gap) + 0.7rem);
  }

  .tab-body-title {
    font-size: clamp(1.85rem, 4.6vw, 2.8rem);
  }
}

.section-card {
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  border-radius: 10px;
  padding: 0.9rem 0.95rem;
  box-shadow: none;
  position: relative;
  overflow: visible;
  backdrop-filter: none;
  background-clip: border-box;
}

.section-card::before {
  content: none;
}

.section-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0.45rem;
}

.profile-hero {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 8%, transparent) 0%, color-mix(in srgb, var(--success) 5%, transparent) 100%);
  border: 1px solid color-mix(in srgb, var(--primary-light) 60%, var(--border));
}

.identity-name {
  font-family: "Lora", serif;
  font-size: clamp(1.35rem, 3.6vw, 2.2rem);
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin-bottom: 0.35rem;
}

.identity-tagline {
  color: var(--ink-medium);
  font-size: 0.9rem;
  max-width: 100ch;
  white-space: pre-line;
}

.chip-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip-list li {
  border: 1px solid color-mix(in srgb, var(--primary) 40%, var(--border));
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 10%, transparent) 0%, color-mix(in srgb, var(--success) 5%, transparent) 100%);
  color: var(--ink);
  padding: 0.3rem 0.55rem;
  border-radius: 3px;
  font-size: 0.78rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.chip-list li:hover {
  border-color: var(--primary);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 14%, transparent) 0%, color-mix(in srgb, var(--success) 8%, transparent) 100%);
}

.project-grid {
  display: grid;
  gap: 0.7rem;
}

.project-card {
  border: 1px solid color-mix(in srgb, var(--primary) 25%, var(--border));
  border-radius: 8px;
  padding: 0.9rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 6%, transparent) 0%, color-mix(in srgb, var(--success) 4%, transparent) 100%);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--primary), color-mix(in srgb, var(--success) 45%, var(--primary)), transparent);
  opacity: 0.5;
}

.project-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  box-shadow: 0 12px 32px color-mix(in srgb, var(--primary) 18%, transparent);
}

.project-title {
  font-family: "Lora", serif;
  font-size: 1.05rem;
  line-height: 1.3;
  margin-bottom: 0.4rem;
}

.meta-title {
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.24rem;
  color: var(--ink-light);
}

.project-summary {
  color: var(--ink-medium);
  margin-bottom: 0.6rem;
  border-left: 3px solid color-mix(in srgb, var(--primary) 72%, transparent);
  padding-left: 0.64rem;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.32rem;
  margin-bottom: 0.55rem;
}

.tech-tag {
  display: inline-block;
  background: linear-gradient(135deg, color-mix(in srgb, var(--success) 12%, transparent) 0%, color-mix(in srgb, var(--primary) 7%, transparent) 100%);
  color: var(--success);
  border: 1px solid color-mix(in srgb, var(--success) 45%, var(--border));
  border-radius: 3px;
  font-size: 0.66rem;
  padding: 0.22rem 0.48rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.tech-tag:hover {
  border-color: var(--success);
  background: linear-gradient(135deg, color-mix(in srgb, var(--success) 16%, transparent) 0%, color-mix(in srgb, var(--primary) 9%, transparent) 100%);
}

.project-list {
  list-style: none;
  margin-bottom: 0.55rem;
}

.project-list li {
  color: var(--ink-medium);
  margin-bottom: 0.2rem;
  padding-left: 0.95rem;
  font-size: 0.84rem;
  position: relative;
}

.project-list li::before {
  content: "•";
  color: var(--primary);
  position: absolute;
  left: 0;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

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

a:hover {
  text-decoration: underline;
}

.action-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  border-radius: 4px;
  padding: 0.34rem 0.58rem;
  border: 1px solid var(--primary);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 12%, transparent) 0%, color-mix(in srgb, var(--primary-light) 25%, transparent) 100%);
  color: var(--primary-strong);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: all 0.2s ease;
}

.action-link:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--primary-strong);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 18%, transparent) 0%, color-mix(in srgb, var(--primary-light) 30%, transparent) 100%);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 25%, transparent);
}

.link-list {
  list-style: none;
  display: grid;
  gap: 0.24rem;
}

.link-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  color: var(--primary);
  padding: 0.34rem 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.link-list a:hover {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 10%, transparent) 0%, color-mix(in srgb, var(--primary-light) 20%, transparent) 100%);
}

.link-list a::before {
  content: "↗";
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  color: var(--ink-light);
  transition: color 0.2s ease;
}

.link-list a:hover::before {
  color: var(--primary);
}

.contact-text {
  color: var(--ink-medium);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.login-card {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 6%, transparent) 0%, color-mix(in srgb, var(--surface) 96%, transparent) 100%);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, var(--border));
  text-align: left;
}

.login-form-fields {
  display: grid;
  gap: 0.52rem;
}

.login-field-label {
  color: var(--ink-medium);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.login-field-input {
  width: 100%;
  border: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  border-radius: 6px;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  color: var(--ink);
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-size: 0.9rem;
  line-height: 1.4;
  padding: 0.52rem 0.62rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.login-field-input::placeholder {
  color: color-mix(in srgb, var(--ink-light) 84%, transparent);
}

.login-field-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
  background: color-mix(in srgb, var(--surface) 98%, var(--primary-light));
}

.reader-card {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 8%, transparent) 0%, color-mix(in srgb, var(--success) 5%, transparent) 100%);
  border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--border));
  min-height: clamp(300px, 38vh, 460px);
  padding-bottom: 1.25rem;
}

.reader-description {
  margin-bottom: 0.5rem;
  color: var(--ink-medium);
  font-size: 0.9rem;
}

.reader-topic {
  margin: 0 0 0.55rem;
  color: var(--ink);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.reader-links {
  display: grid;
  gap: 0.52rem;
}

.reader-sample-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.28rem;
}

.reader-sample-link {
  color: var(--ink-medium);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.77rem;
  letter-spacing: 0.02em;
}

.reader-sample-link:hover {
  color: var(--primary);
}

.reader-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid color-mix(in srgb, var(--primary) 50%, var(--border));
  color: var(--primary);
  border-radius: 4px;
  padding: 0.38rem 0.72rem;
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.67rem;
  transition: all 0.2s ease;
  background: transparent;
  margin-top: 0.25rem;
  width: fit-content;
}

.reader-link::after {
  content: "↗";
}

.reader-link:hover {
  text-decoration: none;
  border-color: var(--primary);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 12%, transparent) 0%, color-mix(in srgb, var(--primary-light) 24%, transparent) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 22%, transparent);
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tab-panel.is-active,
  .tab-button,
  .project-card,
  .theme-toggle,
  .action-link {
    animation: none;
    transition: none;
  }
}

@media (max-width: 760px) {
  :root,
  body[data-theme="dark"] {
    --left-strip-end: 0px;
    --header-msg-offset: 0px;
    --layout-width: 100%;
    --layout-pad-left: 0.8rem;
    --layout-pad-right: 0.8rem;
    --layout-gap: 0.75rem;
    --header-h: auto;
    --right-guide-gap: 5.1rem;
  }

  body {
    overflow: auto;
  }

  body::before {
    background:
      radial-gradient(circle at 10% 12%, color-mix(in srgb, var(--primary) 10%, transparent) 0%, transparent 36%),
      radial-gradient(circle at 92% 6%, color-mix(in srgb, var(--success) 10%, transparent) 0%, transparent 32%);
  }

  body::after {
    display: none;
  }

  .main {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 0.9rem 0.8rem 1.2rem;
    overflow: visible;
  }

  .left-pane,
  .right-pane {
    padding: 0;
  }

  .right-pane {
    gap: 0.5rem;
    padding-right: 0;
  }

  .ambient-bg-wrap {
    left: 0;
  }

  .ambient-bg-canvas {
    opacity: 0.08;
    filter: saturate(0.82) brightness(0.84) blur(0.6px);
  }

  .ambient-bg-host::before {
    opacity: 0.08;
    filter: saturate(0.82) brightness(0.84) blur(0.6px);
  }

  .intro-copy {
    margin: 0.1rem 0 0.35rem;
    padding: 0;
    text-align: left;
  }

  .intro-sub {
    text-align: left;
  }

  .tab-body-title {
    text-align: center;
    justify-content: center;
  }

  .section-card {
    width: min(100%, 720px);
    margin-inline: auto;
    text-align: center;
  }

  .section-label,
  .identity-name,
  .identity-tagline,
  .project-title,
  .meta-title,
  .project-summary,
  .project-list li,
  .contact-text,
  .reader-description {
    text-align: center;
  }

  .chip-list,
  .tech-list,
  .project-links,
  .rail-icons {
    justify-content: center;
  }

  .link-list a {
    width: 100%;
    justify-content: center;
  }

  .project-summary {
    border-left: 0;
    padding-left: 0;
  }

  .project-list li {
    padding-left: 0;
  }

  .project-list li::before {
    content: none;
  }

  .login-card,
  .login-field-label {
    text-align: left;
  }

  .settings-drawer .drawer-title,
  .settings-drawer .tab-button,
  .settings-drawer .tab-button-name,
  .settings-drawer .tab-button-preview,
  .settings-drawer .tab-button-preview li {
    text-align: left;
  }

  .settings-drawer .tab-button {
    align-items: flex-start;
  }

  .settings-drawer .tab-button-preview li {
    padding-left: 0.7rem;
  }

  .settings-drawer .tab-button-preview li::before {
    content: "-";
  }

  .header-controls {
    position: static;
  }

  .floating-controls {
    position: fixed;
    top: 0.7rem;
    right: 0.8rem;
    top: max(0.7rem, env(safe-area-inset-top));
    right: max(0.8rem, env(safe-area-inset-right));
    left: auto;
    z-index: 45;
  }

  .left-rail {
    position: static;
    height: auto;
    border-radius: 10px;
    padding: 0.45rem;
    gap: 0.5rem;
    grid-template-rows: auto auto;
    overflow: visible;
    padding-top: 0;
    max-height: none;
  }

  .left-rail-stack {
    grid-template-columns: 1fr;
  }

  .side-tab-nav {
    display: none;
  }

  .sheltie-frame::after {
    display: none;
  }

  .sheltie-image {
    height: auto;
    max-height: 240px;
  }

  .left-name,
  .left-name::after {
    display: none;
  }

  .rail-icons {
    justify-content: center;
  }

  .settings-drawer {
    width: min(330px, 88vw);
    padding-top: 76px;
  }

  .content-stage {
    border-radius: 0;
    padding: 0;
    max-width: none;
    height: auto;
    max-height: none;
    overflow: visible;
  }

  .tab-button {
    padding: 0.55rem 0.5rem;
  }

}

@media (max-width: 640px) {
  .intro-copy {
    margin: 0.7rem 0 0.3rem;
  }

  .intro-title {
    font-size: 1.06rem;
    margin-top: 0.3rem;
  }

  .intro-sub {
    font-size: 0.68rem;
    max-width: 30ch;
  }

  .header-controls {
    gap: 0.34rem;
    padding: 0.2rem;
  }

  .main {
    padding: 0.9rem 0.75rem 1.6rem;
  }

  .menu-toggle {
    width: 32px;
    height: 32px;
  }

  .settings-drawer {
    width: 86vw;
    padding: 70px 0.65rem 0.9rem;
  }

  .content-stage {
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    padding: 0.75rem 0;
  }

  .section-card {
    padding: 0.9rem;
  }

  #profilePanel {
    grid-template-columns: 1fr !important;
  }

  #profilePanel .profile-hero {
    grid-column: 1 !important;
  }

  .project-grid {
    grid-template-columns: 1fr !important;
  }

  .project-card:first-child {
    grid-column: 1 !important;
  }

  #networkPanel {
    grid-template-columns: 1fr !important;
  }
}

@media (min-width: 1024px) {
  #profilePanel {
    grid-template-columns: 1.1fr 1fr;
  }

  #profilePanel .profile-hero {
    grid-column: 1 / -1;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  #networkPanel {
    grid-template-columns: 1fr;
  }
}