/* ============================================================
   AJM · 个人主页样式
   深色宇宙风，参考 OpenAI / ChatGPT 官网的排版节奏：
   大留白、细边框、克制的强调色、柔和光晕。
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  color-scheme: dark;

  --bg: #05060a;
  --fg: #f2f4f8;
  --muted: #a7b0c0;
  --muted-2: #7e8798;

  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --card: rgba(255, 255, 255, 0.035);
  --card-hover: rgba(255, 255, 255, 0.075);

  --accent: #9db2ff;
  --accent-soft: rgba(140, 165, 255, 0.5);

  --radius-panel: 28px;
  --radius-card: 16px;
  --maxw: 780px;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans CJK SC", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", "Courier New", monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. 基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  /* 全站字号基准：改这一个数字，所有 rem 尺寸会等比缩放 */
  font-size: 17px;
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--fg);
  background-color: var(--bg);
  background-image:
    radial-gradient(1100px 620px at 50% -10%, rgba(84, 100, 200, 0.24), transparent 70%),
    radial-gradient(900px 520px at 105% 105%, rgba(150, 84, 220, 0.16), transparent 70%);
  background-attachment: fixed;
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

::selection {
  background: rgba(140, 165, 255, 0.32);
  color: #fff;
}

/* ---------- 3. 背景层 ---------- */
.starfield {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.nebula {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.6;
  will-change: transform;
}

.blob--1 {
  width: 46vmax; height: 46vmax; left: -16vmax; top: -20vmax;
  background: radial-gradient(circle, rgba(88, 108, 255, 0.5), transparent 65%);
  animation: drift-a 26s ease-in-out infinite alternate;
}
.blob--2 {
  width: 38vmax; height: 38vmax; right: -14vmax; top: 2vmax;
  background: radial-gradient(circle, rgba(168, 92, 255, 0.42), transparent 65%);
  animation: drift-b 32s ease-in-out infinite alternate;
}
.blob--3 {
  width: 34vmax; height: 34vmax; left: 20vmax; bottom: -18vmax;
  background: radial-gradient(circle, rgba(64, 196, 214, 0.26), transparent 65%);
  animation: drift-c 38s ease-in-out infinite alternate;
}

.spotlight {
  position: fixed;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s ease;
  background: radial-gradient(
    460px circle at var(--mx, 50%) var(--my, 18%),
    rgba(140, 165, 255, 0.075),
    transparent 62%
  );
}
.spotlight.is-on { opacity: 1; }

.grain {
  position: fixed;
  inset: -50%;
  z-index: 6;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 4. 骨架 ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 30;
  padding: 10px 16px;
  border-radius: 0 0 12px 0;
  background: #fff;
  color: #08090d;
  font-size: 0.9rem;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

.shell {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  max-width: var(--maxw);
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(26px, 5vw, 68px) clamp(14px, 4vw, 30px);
}
@supports (min-height: 100svh) {
  .shell { min-height: 100svh; }
}

.panel {
  position: relative;
  padding: clamp(30px, 4.6vw, 58px) clamp(22px, 4.2vw, 52px) clamp(24px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.048), rgba(255, 255, 255, 0.016));
  box-shadow:
    0 40px 90px -50px rgba(0, 0, 0, 0.95),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}
.panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 14%;
  right: 14%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.34), transparent);
}

/* ---------- 5. 首屏 ---------- */
.avatar {
  position: relative;
  width: 108px;
  height: 108px;
  margin-bottom: 26px;
}

/* 头像背后的一团冷色光晕，让照片边缘自然融进星空背景 */
.avatar__glow {
  position: absolute;
  inset: -30%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(140, 165, 255, 0.42),
    rgba(152, 92, 232, 0.19) 48%,
    transparent 70%
  );
  filter: blur(12px);
  pointer-events: none;
}

.avatar__img {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 12px 26px rgba(0, 0, 0, 0.5));
}

.avatar__ring {
  position: absolute;
  inset: -15px;
  border: 1px solid rgba(150, 170, 255, 0.22);
  border-radius: 50%;
  animation: spin 20s linear infinite;
  pointer-events: none;
}
.avatar__ring::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 50%;
  width: 6px;
  height: 6px;
  margin-left: -3px;
  border-radius: 50%;
  background: #b3c4ff;
  box-shadow: 0 0 12px 3px rgba(140, 165, 255, 0.85);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  padding: 5px 13px 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #58d68d;
  box-shadow: 0 0 0 0 rgba(88, 214, 141, 0.55);
  animation: pulse 2.6s ease-out infinite;
}

.status__sep { color: var(--muted-2); }

.hero__title {
  margin: 0 0 6px;
  font-size: clamp(2.1rem, 7vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.hero__sub {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: clamp(1.02rem, 2.5vw, 1.18rem);
  letter-spacing: -0.005em;
}

.hero__intro {
  max-width: 46ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.85;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 22px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--fg);
  font-size: 0.93rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease),
    transform 0.22s var(--ease), color 0.22s var(--ease);
}
.btn:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }

.btn--primary {
  background: #ffffff;
  border-color: #ffffff;
  color: #08090d;
  font-weight: 600;
}
.btn--primary:hover {
  background: #e6e9f0;
  border-color: #e6e9f0;
  color: #08090d;
}

/* ---------- 7. 内容分区 ---------- */
.section {
  margin-top: clamp(28px, 4vw, 38px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.section__title {
  margin: 0 0 16px;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ---------- 8. 链接卡片 ---------- */
/* 两列排布；数量为奇数时，最后一张占满整行，不会留下半格空位 */
.links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.links > .link-card:last-child:nth-child(odd) { grid-column: 1 / -1; }

.link-card {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--card);
  text-decoration: none;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease),
    transform 0.22s var(--ease);
}
.link-card:hover {
  background: var(--card-hover);
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.link-card__badge {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.02));
  color: #b9c6ff;               /* 图标颜色，跟主题的冷色调统一 */
  transition: box-shadow 0.22s var(--ease), color 0.22s var(--ease),
    border-color 0.22s var(--ease);
}

.link-card__badge .icon {
  width: 20px;
  height: 20px;
  display: block;
}

.link-card:hover .link-card__badge {
  color: #ffffff;
  border-color: rgba(160, 180, 255, 0.42);
  box-shadow: 0 0 18px -3px var(--accent-soft);
}

.link-card__body {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.35;
}

.link-card__label {
  font-size: 1rem;
  font-weight: 500;
  color: var(--fg);
}

.link-card__handle {
  color: var(--muted-2);
  font-size: 0.84rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-card__arrow {
  flex: 0 0 auto;
  margin-left: auto;
  color: var(--muted-2);
  opacity: 0;
  transform: translate(-3px, 3px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), color 0.22s var(--ease);
}
.link-card:hover .link-card__arrow {
  opacity: 1;
  transform: translate(0, 0);
  color: var(--accent);
}

/* ---------- 9. 404 ---------- */
.notfound { padding: 12px 0 6px; }

.notfound__code {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  color: var(--accent);
}

.notfound__title {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 5vw, 2.15rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.notfound__text {
  max-width: 44ch;
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

/* ---------- 10. 页脚 ---------- */
.foot {
  margin-top: clamp(28px, 4vw, 38px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.foot p {
  margin: 0;
  color: var(--muted-2);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

/* ---------- 11. 入场动画 ---------- */
/* 初始的隐藏状态放在关键帧里（fill-mode: both），而不是写成 opacity:0。
   这样即使浏览器不支持动画，内容也是直接可见的，不会白屏。 */
.reveal {
  animation: rise 0.85s var(--ease) both;
  animation-delay: var(--d, 0s);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(88, 214, 141, 0.5); }
  70%  { box-shadow: 0 0 0 7px rgba(88, 214, 141, 0); }
  100% { box-shadow: 0 0 0 0 rgba(88, 214, 141, 0); }
}

@keyframes drift-a {
  to { transform: translate3d(6vmax, 4vmax, 0) scale(1.12); }
}
@keyframes drift-b {
  to { transform: translate3d(-5vmax, 6vmax, 0) scale(1.08); }
}
@keyframes drift-c {
  to { transform: translate3d(4vmax, -5vmax, 0) scale(1.15); }
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 600px) {
  .links { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .status { font-size: 0.72rem; gap: 7px; }
  .avatar { width: 94px; height: 94px; margin-bottom: 24px; }
  .avatar__ring { inset: -13px; }
  .actions .btn { flex: 1 1 auto; }
}

/* ---------- 13. 无障碍 / 偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .spotlight { display: none; }
}

@media (prefers-contrast: more) {
  :root {
    --muted: #d3d9e4;
    --muted-2: #a8b0bf;
    --line: rgba(255, 255, 255, 0.22);
  }
  .grain { display: none; }
}