/* ==========================================================================
   amopixel.com — Global Styles
   设计基调：白底、绿色 #9ADCA5 强调、现代简约、克制的微交互。
   ========================================================================== */

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f7f8f7;
  --surface-sunken: #f1f3f1;

  --ink: #1a1d1b;
  --ink-2: #4a514c;
  --ink-3: #8a918c;
  --hairline: rgba(26, 29, 27, 0.08);
  --hairline-strong: rgba(26, 29, 27, 0.16);

  --accent: #9adca5;
  --accent-deep: #6ec27c;
  --accent-soft: #e6f6ea;
  --accent-ink: #1f5b2c;

  --shadow-sm: 0 1px 2px rgba(20, 30, 22, 0.04), 0 1px 1px rgba(20, 30, 22, 0.03);
  --shadow-md: 0 6px 18px rgba(20, 30, 22, 0.07), 0 2px 4px rgba(20, 30, 22, 0.04);
  --shadow-lg: 0 24px 60px -20px rgba(20, 30, 22, 0.18), 0 8px 24px -10px rgba(20, 30, 22, 0.10);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  --font-display: "Inter", "PingFang SC", "Microsoft YaHei", system-ui,
    sans-serif;

  --topbar-h: 72px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 160ms;
  --dur: 240ms;
  --dur-slow: 420ms;
}

/* ---------- Reset & Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  min-height: 100dvh;
}

body {
  overscroll-behavior-y: none;
}

img,
video {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 3px;
  border-radius: 6px;
}

@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;
  }
}

/* ---------- Topbar ---------- */

.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 48px);
  z-index: 50;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out);
}

.topbar[data-scrolled="true"] {
  border-bottom-color: var(--hairline);
}

/* 在首页时让顶栏完全透明、不分割视觉 */
.topbar[data-page="home"] {
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.5),
    rgba(255, 255, 255, 0)
  );
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
}

.logo {
  display: inline-flex;
  align-items: center;
  height: calc(var(--topbar-h) - 24px);
  max-width: min(40vw, 240px);
  border-radius: var(--radius-sm);
  transition: transform var(--dur) var(--ease-out),
    opacity var(--dur) var(--ease-out);
}

.logo img {
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.logo:hover {
  transform: translateY(-1px);
  opacity: 0.9;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.6vw, 12px);
}

.nav a {
  position: relative;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: var(--radius-pill);
  transition: color var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-deep);
  transform: translateX(-50%);
  transition: width var(--dur) var(--ease-out);
}

.nav a:hover {
  color: var(--ink);
  background: var(--surface-soft);
}

.nav a[aria-current="page"] {
  color: var(--ink);
}

.nav a[aria-current="page"]::after {
  width: 18px;
}

@media (max-width: 480px) {
  .nav a {
    padding: 8px 10px;
    font-size: 14px;
  }
}

/* ---------- View / Page Transitions ---------- */

.view {
  min-height: 100vh;
  min-height: 100dvh;
  padding-top: var(--topbar-h);
}

.page {
  animation: page-in var(--dur-slow) var(--ease-out) both;
}

.page.is-leaving {
  animation: page-out var(--dur) var(--ease-in-out) both;
}

@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes page-out {
  from {
    opacity: 1;
    transform: none;
  }
  to {
    opacity: 0;
    transform: translateY(-6px);
  }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  border: 1.5px solid transparent;
  background: var(--surface);
  color: var(--ink);
  transition: transform var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 6px 16px rgba(154, 220, 165, 0.45);
}

.btn-primary:hover {
  background: var(--accent-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(110, 194, 124, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(110, 194, 124, 0.35);
}

.btn-ghost {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--hairline-strong);
}

.btn-ghost:hover {
  border-color: var(--accent-deep);
  color: var(--accent-ink);
  background: var(--accent-soft);
}

.btn-ghost:active {
  transform: translateY(1px);
}

/* ---------- Home ---------- */

.page-home {
  margin-top: calc(var(--topbar-h) * -1);
  padding-top: 0;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  position: relative;
}

.hero {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  background: var(--surface-sunken);
}

.hero img,
.hero video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  animation: hero-in 900ms var(--ease-out) both;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: scale(1.04);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.hero-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--ink-3);
  font-size: 14px;
  background: linear-gradient(135deg, #f4faf5 0%, #ffffff 100%);
}

/* ---------- Games Page ---------- */

.page-games {
  padding: clamp(20px, 4vw, 40px) clamp(16px, 4vw, 48px) 80px;
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 4vw, 48px);
  max-width: 1280px;
  margin: 0 auto;
}

.games-selector {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
}

.selector-arrow {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--hairline-strong);
  color: var(--ink-2);
  transition: all var(--dur) var(--ease-out);
  z-index: 2;
}

.selector-arrow svg {
  width: 18px;
  height: 18px;
}

.selector-arrow:hover {
  color: var(--accent-ink);
  border-color: var(--accent-deep);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.selector-arrow:active {
  transform: translateY(0);
}

.selector-arrow[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
  background: var(--surface);
  border-color: var(--hairline);
  color: var(--ink-3);
}

.selector-track {
  flex: 1 1 auto;
  display: flex;
  gap: clamp(12px, 2vw, 22px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 8px 4px 16px;
  scrollbar-width: none;
}

.selector-track::-webkit-scrollbar {
  display: none;
}

.game-icon {
  flex: 0 0 auto;
  scroll-snap-align: center;
  width: clamp(72px, 11vw, 108px);
  height: clamp(72px, 11vw, 108px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-soft);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  transition: transform var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}

.game-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}

.game-icon:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.game-icon:hover img {
  transform: scale(1.04);
}

.game-icon.is-selected {
  border-color: var(--accent-deep);
  box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow-md);
  transform: translateY(-2px);
}

.game-icon-label {
  position: absolute;
  inset: auto 0 0 0;
  padding: 18px 8px 6px;
  font-size: 11px;
  text-align: center;
  color: #fff;
  font-weight: 500;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.45), transparent);
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out);
  pointer-events: none;
}

.game-icon:hover .game-icon-label,
.game-icon.is-selected .game-icon-label {
  opacity: 1;
}

/* Detail */

.game-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: stretch;
}

.game-detail.is-swapping {
  animation: detail-swap var(--dur) var(--ease-out) both;
}

@keyframes detail-swap {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 860px) {
  .game-detail {
    grid-template-columns: 1fr;
  }
}

.game-banner {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--surface-sunken);
  aspect-ratio: 16 / 9;
  box-shadow: var(--shadow-md);
}

.banner-stage {
  position: absolute;
  inset: 0;
  display: flex;
  transition: transform var(--dur-slow) var(--ease-in-out);
  touch-action: pan-y;
}

.banner-slide {
  flex: 0 0 100%;
  height: 100%;
  position: relative;
  cursor: zoom-in;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-dots {
  position: absolute;
  inset: auto 0 16px 0;
  display: flex;
  justify-content: center;
  gap: 8px;
  z-index: 2;
}

.banner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: all var(--dur) var(--ease-out);
}

.banner-dot:hover {
  background: #fff;
}

.banner-dot.is-active {
  width: 24px;
  border-radius: 999px;
  background: var(--accent);
  border-color: var(--accent-deep);
}

.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out);
  color: var(--ink);
}

.banner-arrow svg {
  width: 18px;
  height: 18px;
}

.banner-arrow--left {
  left: 12px;
}

.banner-arrow--right {
  right: 12px;
}

.game-banner:hover .banner-arrow {
  opacity: 1;
}

.banner-arrow:hover {
  background: #fff;
  color: var(--accent-ink);
}

@media (max-width: 720px) {
  .banner-arrow {
    display: none;
  }
}

.game-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  padding: clamp(8px, 2vw, 24px) clamp(8px, 2vw, 16px);
  min-width: 0;
}

.game-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.15;
  /* JS 会根据文字长度调整 --title-size */
  font-size: var(--title-size, clamp(28px, 4.4vw, 56px));
}

.game-desc {
  margin: 0;
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.7;
  white-space: pre-wrap;
}

.game-info .btn {
  align-self: flex-start;
  padding: 14px 30px;
  font-size: 16px;
}

/* Empty state */

.games-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--ink-3);
}

/* ---------- Download Page ---------- */

.page-download {
  position: relative;
  min-height: calc(100vh - var(--topbar-h));
  min-height: calc(100dvh - var(--topbar-h));
  padding: 24px clamp(16px, 4vw, 48px) 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.back-btn {
  position: absolute;
  top: 24px;
  left: clamp(16px, 4vw, 48px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px 10px 12px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--hairline-strong);
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--dur) var(--ease-out);
}

.back-btn svg {
  width: 16px;
  height: 16px;
}

.back-btn:hover {
  border-color: var(--accent-deep);
  color: var(--accent-ink);
  background: var(--accent-soft);
  transform: translateX(-2px);
}

.download-card {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
  padding: 0 8px;
  animation: card-in var(--dur-slow) var(--ease-out) both;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.download-icon {
  width: 124px;
  height: 124px;
  border-radius: 28px;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

.download-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.01em;
}

.download-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  width: 60%;
  min-width: 260px;
  margin-top: 16px;
}

@media (max-width: 600px) {
  .download-links {
    width: 100%;
  }
}

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 52px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--hairline-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--dur) var(--ease-out);
  white-space: nowrap;
}

.download-link::after {
  content: "";
  width: 14px;
  height: 14px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234a514c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M7 17L17 7'/><path d='M9 7h8v8'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.65;
  transition: transform var(--dur) var(--ease-out),
    opacity var(--dur) var(--ease-out);
}

.download-link:hover {
  border-color: var(--accent-deep);
  background: var(--accent-soft);
  color: var(--accent-ink);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(110, 194, 124, 0.18);
}

.download-link:hover::after {
  transform: translate(2px, -2px);
  opacity: 1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f5b2c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M7 17L17 7'/><path d='M9 7h8v8'/></svg>");
}

.download-link:active {
  transform: translateY(0);
}

/* ---------- About Page ---------- */

.page-about {
  padding: clamp(40px, 8vw, 96px) clamp(20px, 6vw, 64px) 80px;
}

.about-article {
  max-width: 720px;
  margin: 0 auto;
}

.about-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
  line-height: 1.15;
}

.about-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-2);
}

.about-body p {
  margin: 0 0 20px;
}

.about-body strong {
  color: var(--ink);
  font-weight: 600;
}

.about-body em {
  font-style: italic;
}

.about-body a {
  color: var(--accent-ink);
  border-bottom: 1px solid var(--accent);
  transition: all var(--dur) var(--ease-out);
}

.about-body a:hover {
  background: var(--accent-soft);
  border-bottom-color: var(--accent-deep);
}

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 11, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
  animation: lightbox-in var(--dur) var(--ease-out) both;
}

.lightbox[hidden] {
  display: none;
}

@keyframes lightbox-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.lightbox-img {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: lightbox-img-in var(--dur-slow) var(--ease-out) both;
}

@keyframes lightbox-img-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  transition: background var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: rotate(90deg);
}

/* ---------- Error / Loading ---------- */

.page-error {
  padding: 120px 20px;
  text-align: center;
  color: var(--ink-2);
}

.page-error h1 {
  font-size: 32px;
  margin: 0 0 12px;
  color: var(--ink);
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface-sunken) 0%,
    #f8faf8 50%,
    var(--surface-sunken) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  from {
    background-position: 200% 0;
  }
  to {
    background-position: -200% 0;
  }
}