:root {
  color-scheme: dark;
  --bg: #07070c;
  --panel: rgba(22, 20, 34, 0.78);
  --panel-strong: rgba(31, 29, 47, 0.92);
  --line: rgba(183, 255, 26, 0.16);
  --line-soft: rgba(255, 255, 255, 0.09);
  --text: #f5f4ff;
  --muted: #a6a2ba;
  --accent: #b7ff1a;
  --accent-2: #28f0ff;
  --danger: #ff507a;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.4);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(183, 255, 26, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(135deg, #090911 0%, #11101a 46%, #07070c 100%);
  background-size: 46px 46px, 46px 46px, cover;
  color: var(--text);
  overflow-x: hidden;
}

.home-effect-stage {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
  opacity: 0.86;
  contain: layout paint style;
  mix-blend-mode: screen;
}

.home-effect-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(183, 255, 26, 0.09), transparent 60%),
    linear-gradient(180deg, transparent, rgba(40, 240, 255, 0.045));
}

.home-effect-stage::after {
  content: "";
  position: absolute;
  left: -24%;
  right: -24%;
  bottom: 18%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(183, 255, 26, 0.35), rgba(40, 240, 255, 0.24), transparent);
  opacity: 0.28;
  transform: translate3d(-18%, 0, 0);
  animation: homeEffectScan 6.8s ease-in-out infinite;
}

.home-effect-dot-surge {
  position: absolute;
  inset: -10% -12% -18%;
  opacity: 0;
  transform-origin: 50% 100%;
  will-change: transform, opacity, background-position;
  transition: opacity 0.28s ease;
}

.home-effect-dot-surge {
  background:
    radial-gradient(circle, rgba(183, 255, 26, 0.34) 0 1.35px, transparent 1.75px),
    radial-gradient(circle, rgba(40, 240, 255, 0.2) 0 1.15px, transparent 1.55px);
  background-position: 0 0, 18px 18px;
  background-size: 32px 32px, 32px 32px;
  mask-image: radial-gradient(ellipse at 50% 54%, rgba(0, 0, 0, 0.94), rgba(0, 0, 0, 0.66) 48%, transparent 86%);
  transform: perspective(860px) rotateX(46deg) translate3d(0, 0, 0);
  animation: homeDotSurge 5.8s ease-in-out infinite;
}

.home-body.effect-dot-surge .home-effect-dot-surge {
  opacity: 1;
}

@keyframes homeDotSurge {
  0%, 100% {
    transform: perspective(860px) rotateX(46deg) translate3d(0, 0, 0) scale(1);
    background-position: 0 0, 18px 18px;
    opacity: 0.78;
  }
  50% {
    transform: perspective(860px) rotateX(46deg) translate3d(0, 28px, 0) scale(1.055);
    background-position: 18px 32px, 0 50px;
    opacity: 1;
  }
}

@keyframes homeEffectScan {
  0%, 100% { transform: translate3d(-18%, 0, 0); opacity: 0.12; }
  50% { transform: translate3d(18%, -72px, 0); opacity: 0.34; }
}

@media (prefers-reduced-motion: reduce) {
  .home-effect-dot-surge {
    animation: none;
  }
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.home-body::before,
.home-body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.home-body::before {
  background:
    repeating-linear-gradient(90deg, transparent 0 27px, rgba(183, 255, 26, 0.025) 27px 28px),
    repeating-linear-gradient(0deg, transparent 0 19px, rgba(40, 240, 255, 0.018) 19px 20px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.96), transparent 88%);
}

.home-body::after {
  background: linear-gradient(180deg, rgba(183, 255, 26, 0.06), transparent 12%, transparent 86%, rgba(40, 240, 255, 0.04));
  mix-blend-mode: screen;
}

.home-shell {
  position: relative;
  z-index: 2;
  width: min(1480px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 54px 0 72px;
}


.home-hero {
  display: grid;
  gap: 24px;
  align-items: start;
  padding: 16px 0 42px;
}

.home-kicker,
.section-kicker {
  margin: 0;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.home-hero h1 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(48px, 7vw, 118px);
  line-height: 0.88;
  font-weight: 950;
  letter-spacing: 0;
  text-shadow: 0 0 18px rgba(183, 255, 26, 0.28), 0 16px 46px rgba(183, 255, 26, 0.1);
}

.home-user-row {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.home-avatar {
  position: relative;
  width: 70px;
  height: 70px;
  flex: 0 0 auto;
  border: 1px solid rgba(183, 255, 26, 0.34);
  border-radius: 8px;
  background:
    linear-gradient(135deg, var(--avatar-a, #b7ff1a) 0 44%, transparent 44%),
    linear-gradient(315deg, var(--avatar-b, #28f0ff) 0 42%, #151326 42%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06), 0 20px 46px rgba(0, 0, 0, 0.32);
  overflow: hidden;
}

.avatar-face {
  position: absolute;
  left: 19px;
  top: 18px;
  width: 32px;
  height: 34px;
  border-radius: 8px 8px 14px 14px;
  background: #f6d2bd;
}

.avatar-face::before,
.avatar-face::after {
  content: "";
  position: absolute;
  top: 13px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #1b1323;
}

.avatar-face::before { left: 9px; }
.avatar-face::after { right: 9px; }

.avatar-glass {
  position: absolute;
  left: 14px;
  top: 14px;
  width: 42px;
  height: 16px;
  border-top: 8px solid rgba(9, 9, 17, 0.75);
  border-radius: 9px 9px 2px 2px;
}

.home-greeting {
  margin: 0 0 4px;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 850;
}

.home-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.create-canvas-button {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 52px;
  padding: 0 24px;
  border: 1px solid rgba(183, 255, 26, 0.7);
  border-radius: 8px;
  color: #071005;
  background: var(--accent);
  font-size: 17px;
  font-weight: 850;
  box-shadow: 0 12px 34px rgba(183, 255, 26, 0.2);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

.create-canvas-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 42px rgba(183, 255, 26, 0.28);
  filter: saturate(1.08);
}

.create-canvas-button:disabled,
.refresh-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.create-canvas-button svg,
.refresh-button svg,
.card-menu-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.canvas-library {
  padding-top: 12px;
}

.library-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.library-head h2 {
  margin: 4px 0 0;
  font-size: 28px;
  letter-spacing: 0;
}

.refresh-button {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.045);
}

.refresh-button:hover {
  color: var(--accent);
  border-color: rgba(183, 255, 26, 0.38);
}

.canvas-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.canvas-card {
  position: relative;
  min-width: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.13s ease, border-color 0.13s ease, background 0.13s ease;
}

.canvas-card:hover {
  transform: translateY(-2px);
  border-color: rgba(183, 255, 26, 0.54);
  background: var(--panel-strong);
}

.canvas-open-button {
  width: 100%;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  text-align: left;
}

.canvas-preview {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 2px;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(183, 255, 26, 0.12), transparent 38%),
    linear-gradient(315deg, rgba(40, 240, 255, 0.1), transparent 42%),
    #10101a;
  overflow: hidden;
}

.preview-tile {
  min-width: 0;
  min-height: 0;
  background:
    linear-gradient(135deg, rgba(183, 255, 26, 0.16), transparent 50%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    #151423;
  background-size: auto, 18px 18px, 18px 18px, auto;
}

.preview-tile img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.preview-empty {
  display: grid;
  place-items: center;
  color: rgba(245, 244, 255, 0.42);
  font-size: 11px;
  font-weight: 800;
}

.canvas-info {
  padding: 12px 14px 14px;
}

.canvas-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.canvas-card-title {
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
  font-size: 16px;
  font-weight: 850;
}

.canvas-meta {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.card-menu-button {
  position: absolute;
  right: 8px;
  bottom: 8px;
  z-index: 3;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: var(--text);
  background: rgba(7, 7, 12, 0.72);
  backdrop-filter: blur(12px);
}

.card-menu-button:hover,
.card-menu-button[aria-expanded="true"] {
  color: var(--accent);
  border-color: rgba(183, 255, 26, 0.42);
}

.canvas-menu {
  position: absolute;
  right: 8px;
  bottom: 48px;
  z-index: 4;
  width: 138px;
  padding: 6px;
  border: 1px solid rgba(183, 255, 26, 0.18);
  border-radius: 8px;
  background: rgba(18, 17, 28, 0.96);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(16px);
}

.canvas-menu.hidden {
  display: none;
}

.canvas-menu button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 9px;
  height: 34px;
  border: 0;
  border-radius: 6px;
  color: var(--text);
  background: transparent;
  padding: 0 10px;
  text-align: left;
}

.canvas-menu button:hover {
  background: rgba(183, 255, 26, 0.12);
}

.canvas-menu button.danger {
  color: #ffd9e1;
}

.canvas-menu button.danger:hover {
  background: rgba(255, 80, 122, 0.16);
  color: #fff;
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 220px;
  border: 1px dashed rgba(183, 255, 26, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
}

.empty-state.hidden,
.hidden {
  display: none;
}

.empty-mark {
  margin-bottom: 8px;
  color: rgba(183, 255, 26, 0.8);
  font-size: 42px;
  font-weight: 950;
}

@media (max-width: 1180px) {
  .canvas-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .home-shell {
    width: min(100% - 28px, 720px);
    padding-top: 34px;
  }

  .canvas-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .canvas-grid { grid-template-columns: 1fr; }

  .home-user-row {
    align-items: flex-start;
  }

  .home-avatar {
    width: 58px;
    height: 58px;
  }
}