/* =========================================================================
   QIQI QUEST — 像素风个人学习网站 共享设计系统
   方向参考: Codédex (深夜靛蓝 + 像素探险地图 + 霓虹点缀)
   把"学习"做成一张可探索的 RPG 任务世界
   ========================================================================= */

/* ---- 像素中文字体 Zpix (最像素) ---- */
@font-face {
  font-family: 'Zpix';
  src: url('https://cdn.jsdelivr.net/gh/SolidZORO/zpix-pixel-font/dist/Zpix.ttf') format('truetype');
  font-display: swap;
}

:root {
  /* —— 夜空靛蓝调色板 (取自图1 Codédex) —— */
  --bg:        #0a0c18;
  --bg-2:      #0e1124;
  --shell:     #06070f;
  --surface:   #151935;
  --surface-2: #1d2348;
  --border:    #2b3270;
  --border-hi: #3d47a3;

  --fg:        #f4f6ff;
  --muted:     #8c93c4;
  --faint:     #5a608f;

  /* —— 霓虹点缀 —— */
  --gold:      #f5c542;
  --gold-deep: #c8961a;
  --cyan:      #4fd6e0;
  --green:     #5bd06a;
  --magenta:   #e26ad6;
  --orange:    #f59145;
  --red:       #f0556a;
  --violet:    #9b7bf0;

  --accent:    var(--gold);

  /* 暖橘地平线 hero 渐变 */
  --sky: linear-gradient(180deg, #f0a868 0%, #c97fb0 22%, #6b5bb5 48%, #2a2d6b 74%, #0a0c18 100%);

  --font-pixel: 'Press Start 2P', 'Zpix', monospace;     /* 拉丁标题/数字 */
  --font-cn:    'Zpix', 'Press Start 2P', monospace;      /* 中文像素 */
  --font-read:  'VT323', 'Zpix', monospace;               /* 大号正文 */
  --font-body:  'Zpix', 'VT323', system-ui, sans-serif;   /* 一般正文(中文友好) */

  --maxw: 1200px;
  --r: 0px;            /* 像素风: 无圆角 */
  --shadow: 6px 6px 0 #04050c;
  --shadow-hi: 8px 8px 0 #04050c;
}

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

html { scroll-behavior: smooth; }

body {
  background:
    linear-gradient(180deg, rgba(10,12,24,.08) 0, rgba(10,12,24,.28) 420px, rgba(10,12,24,.68) 980px, rgba(10,12,24,.84) 100%),
    url('../assets/undersea/page-image2-dark-soft.png') center var(--ocean-scroll, 0px) / 1680px auto repeat-y,
    var(--bg);
  background-attachment: scroll, scroll, scroll;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: .3px;
  min-height: 100vh;
  overflow-x: hidden;
  image-rendering: pixelated;
  position: relative;
}

/* 全站细微扫描线 + 水流颗粒 */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  background:
    linear-gradient(90deg, rgba(10,12,24,.22), rgba(10,12,24,.1) 28%, rgba(10,12,24,.18) 58%, rgba(10,12,24,.28)),
    linear-gradient(180deg, rgba(0,0,0,.04) 0, rgba(0,0,0,.28) 620px, rgba(0,0,0,.42) 100%),
    repeating-linear-gradient(
      180deg, transparent 0, transparent 2px,
      rgba(0,0,0,.13) 3px, rgba(0,0,0,.13) 3px);
  mix-blend-mode: multiply;
}

/* 动态泡泡画布 */
#starfield {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}

.wrap { position: relative; z-index: 2; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

img { image-rendering: pixelated; }

::selection { background: var(--gold); color: #1a1300; }

/* ---- 像素滚动条 ---- */
::-webkit-scrollbar { width: 14px; height: 14px; }
::-webkit-scrollbar-track { background: var(--shell); }
::-webkit-scrollbar-thumb { background: var(--border); border: 3px solid var(--shell); }
::-webkit-scrollbar-thumb:hover { background: var(--border-hi); }

/* =========================================================================
   像素字排版
   ========================================================================= */
h1,h2,h3 { font-family: var(--font-pixel); font-weight: 400; line-height: 1.35; letter-spacing: 0; }
.cn { font-family: var(--font-cn); }
.zh-title { font-family: var(--font-cn); line-height: 1.5; }

.kicker {
  font-family: var(--font-pixel);
  font-size: 11px; letter-spacing: 2px;
  color: var(--gold); text-transform: uppercase;
  display: inline-block;
}

/* 霓虹辉光文字 */
.glow-gold { color: var(--gold); text-shadow: 0 0 8px rgba(245,197,66,.55), 3px 3px 0 #1a1300; }
.glow-cyan { color: var(--cyan); text-shadow: 0 0 8px rgba(79,214,224,.5), 3px 3px 0 #00181a; }
.glow-green{ color: var(--green); text-shadow: 0 0 8px rgba(91,208,106,.5), 3px 3px 0 #06200a; }
.glow-mag  { color: var(--magenta); text-shadow: 0 0 8px rgba(226,106,214,.5), 3px 3px 0 #2a0726; }

/* =========================================================================
   顶部导航
   ========================================================================= */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--shell);
  border-bottom: 3px solid var(--border);
  box-shadow: 0 4px 0 rgba(0,0,0,.4);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; gap: 28px;
  padding: 14px 24px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-pixel); font-size: 17px; color: var(--fg);
  text-decoration: none; white-space: nowrap;
}
.brand .coin { width: 26px; height: 26px; flex: none; }
.nav-links { display: flex; gap: 22px; margin-left: 8px; flex: 1; flex-wrap: wrap; }
.nav-links a {
  font-family: var(--font-cn); font-size: 15px;
  color: var(--muted); text-decoration: none;
  padding: 6px 2px; position: relative; transition: color .15s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--fg); }
.nav-links a.active { color: var(--gold); }
.nav-links a.active::after {
  content: ''; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 3px; background: var(--gold);
  box-shadow: 0 0 8px var(--gold);
}
.nav-right { display: flex; align-items: center; gap: 14px; }
.xp-chip {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-pixel); font-size: 10px; color: var(--gold);
  background: var(--surface); border: 2px solid var(--border);
  padding: 7px 11px;
}
.avatar {
  width: 38px; height: 38px; flex: none;
  background: var(--violet); border: 2px solid var(--border-hi);
  display: grid; place-items: center;
  font-family: var(--font-pixel); font-size: 13px; color: #fff;
}
.nav-toggle { display: none; }

/* =========================================================================
   按钮 (像素硬阴影)
   ========================================================================= */
.btn {
  font-family: var(--font-pixel); font-size: 12px;
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 20px; cursor: pointer; text-decoration: none;
  border: 3px solid #04050c; background: var(--surface-2); color: var(--fg);
  box-shadow: 4px 4px 0 #04050c; transition: transform .08s, box-shadow .08s;
  user-select: none;
}
.btn:hover { transform: translate(-2px,-2px); box-shadow: 6px 6px 0 #04050c; }
.btn:active { transform: translate(2px,2px); box-shadow: 1px 1px 0 #04050c; }
.btn-gold { background: var(--gold); color: #1a1300; border-color: #6e4f00; box-shadow: 4px 4px 0 #6e4f00; }
.btn-gold:hover { box-shadow: 6px 6px 0 #6e4f00; }
.btn-cyan { background: var(--cyan); color: #00181a; border-color: #0a4a50; box-shadow: 4px 4px 0 #0a4a50; }
.btn-green{ background: var(--green); color: #06200a; border-color: #1c5a25; box-shadow: 4px 4px 0 #1c5a25; }
.btn-ghost{ background: transparent; }
.btn-sm { font-size: 10px; padding: 9px 13px; box-shadow: 3px 3px 0 #04050c; }

/* =========================================================================
   卡片 / 面板
   ========================================================================= */
.card {
  background: var(--surface);
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
  padding: 22px;
  position: relative;
  transition: transform .12s, box-shadow .12s, border-color .12s;
}
.card.hoverable:hover {
  transform: translate(-3px,-3px);
  box-shadow: var(--shadow-hi);
  border-color: var(--border-hi);
}
.card-title {
  font-family: var(--font-pixel); font-size: 13px;
  display: flex; align-items: center; gap: 10px; margin-bottom: 16px;
}
.card-title .ic { font-size: 18px; line-height: 1; }
.panel {
  background: var(--bg-2); border: 3px solid var(--border);
  box-shadow: var(--shadow); padding: 26px;
}

/* 角标装饰像素点 */
.corner { position: absolute; width: 6px; height: 6px; background: var(--gold); }
.corner.tl { top: -3px; left: -3px; } .corner.tr { top: -3px; right: -3px; }
.corner.bl { bottom: -3px; left: -3px; } .corner.br { bottom: -3px; right: -3px; }

/* =========================================================================
   徽章 / 标签 / 等级
   ========================================================================= */
.badge {
  font-family: var(--font-pixel); font-size: 9px; letter-spacing: .5px;
  padding: 5px 9px; border: 2px solid currentColor; display: inline-flex;
  align-items: center; gap: 5px; text-transform: uppercase; line-height: 1;
}
.badge-gold { color: var(--gold); } .badge-cyan { color: var(--cyan); }
.badge-green{ color: var(--green); } .badge-mag { color: var(--magenta); }
.badge-red { color: var(--red); } .badge-violet { color: var(--violet); }
.badge-muted{ color: var(--muted); }
.badge.solid { color:#06070f; background: var(--gold); border-color: var(--gold); }

.tag {
  font-family: var(--font-cn); font-size: 13px;
  padding: 4px 10px; background: var(--surface-2);
  border: 2px solid var(--border); color: var(--muted);
}

.pill {
  font-family: var(--font-pixel); font-size: 9px;
  padding: 4px 8px; border-radius: 999px; line-height: 1;
}

/* =========================================================================
   进度条 (XP 风)
   ========================================================================= */
.bar {
  height: 22px; background: var(--shell);
  border: 3px solid var(--border); position: relative; overflow: hidden;
}
.bar > i {
  display: block; height: 100%; width: 0;
  background: repeating-linear-gradient(90deg, var(--green) 0 8px, #4bb958 8px 10px);
  box-shadow: inset 0 0 10px rgba(255,255,255,.25);
  transition: width 1.2s cubic-bezier(.2,.9,.2,1);
}
.bar.gold > i { background: repeating-linear-gradient(90deg, var(--gold) 0 8px, var(--gold-deep) 8px 10px); }
.bar.cyan > i { background: repeating-linear-gradient(90deg, var(--cyan) 0 8px, #3aa9b2 8px 10px); }
.bar.mag  > i { background: repeating-linear-gradient(90deg, var(--magenta) 0 8px, #b94faf 8px 10px); }
.bar-label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-pixel); font-size: 10px; margin-bottom: 8px;
}
.bar-label .pct { color: var(--gold); }

/* 圆环进度 (本周完成率) */
.ring { position: relative; width: 150px; height: 150px; }
.ring svg { transform: rotate(-90deg); }
.ring .ring-num {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  font-family: var(--font-pixel); font-size: 24px; line-height: 1; color: var(--gold);
}
.ring .ring-num small { display:block; font-size: 9px; line-height: 1.35; color: var(--muted); margin-top: 10px; }

/* =========================================================================
   网格布局
   ========================================================================= */
.grid { display: grid; gap: 22px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.dash-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 22px; align-items: start; }

/* =========================================================================
   通用元素
   ========================================================================= */
a { color: var(--cyan); }
hr.px { border: none; border-top: 3px dashed var(--border); margin: 28px 0; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.center { text-align: center; }
.stat-num { font-family: var(--font-pixel); font-size: 30px; color: var(--gold); }
.stat-lbl { font-family: var(--font-cn); font-size: 13px; color: var(--muted); margin-top: 8px; }

.section { padding: 64px 0; position: relative; }
.section-head { margin-bottom: 32px; }
.section-head h2 { font-size: 22px; margin: 10px 0 8px; }
.section-head p { color: var(--muted); max-width: 60ch; }

/* 任务/列表行 */
.q-row {
  display: flex; align-items: center; gap: 16px;
  padding: 16px; border: 3px solid var(--border); background: var(--surface);
  margin-bottom: 14px; transition: transform .1s, border-color .1s, background .1s;
  cursor: pointer; text-decoration: none; color: var(--fg);
}
.q-row:hover { transform: translateX(6px); border-color: var(--gold); background: var(--surface-2); }
.q-check {
  width: 30px; height: 30px; flex: none; border: 3px solid var(--border);
  background: var(--shell); display: grid; place-items: center;
  font-family: var(--font-pixel); font-size: 13px; color: var(--green);
}
.q-row.done .q-check { background: var(--green); color: #06200a; border-color:#1c5a25; }
.q-row.done .q-title { color: var(--muted); text-decoration: line-through; }
.q-body { flex: 1; min-width: 0; }
.q-title { font-family: var(--font-cn); font-size: 16px; }
.q-meta { font-family: var(--font-cn); font-size: 12px; color: var(--faint); margin-top: 4px; }

/* footer */
.foot {
  border-top: 3px solid var(--border); background: var(--shell);
  padding: 36px 0; margin-top: 64px;
  font-family: var(--font-cn); font-size: 13px; color: var(--faint);
}
.foot .container { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

/* 进入动画 */
.reveal { opacity: 0; transform: translateY(24px); }
.reveal.in { opacity: 1; transform: none; transition: opacity .6s ease, transform .6s cubic-bezier(.2,.9,.2,1); }

/* 闪烁光标 */
.cursor::after {
  content: '▋'; color: var(--gold); margin-left: 4px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* 漂浮硬币动画 */
@keyframes float-y { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes spin-coin {
  0% { transform: scaleX(1); } 25% { transform: scaleX(.2); }
  50% { transform: scaleX(1); } 75% { transform: scaleX(.2); } 100% { transform: scaleX(1); }
}
.float { animation: float-y 3.5s ease-in-out infinite; }
.coin-spin { animation: spin-coin 2.2s linear infinite; }

/* hover 像素抖动 */
@keyframes jiggle {
  0%,100%{transform:translate(0,0)} 25%{transform:translate(-1px,1px)}
  50%{transform:translate(1px,-1px)} 75%{transform:translate(1px,1px)}
}
.jiggle:hover { animation: jiggle .25s steps(2) infinite; }

/* 升级脉冲 */
@keyframes pulse-glow {
  0%,100% { box-shadow: 0 0 0 rgba(245,197,66,0); }
  50% { box-shadow: 0 0 18px rgba(245,197,66,.6); }
}
.pulse { animation: pulse-glow 2s ease-in-out infinite; }

/* =========================================================================
   可保存交互: 弹窗 / 表单 / 提示
   ========================================================================= */
.pq-modal-backdrop {
  position: fixed; inset: 0; z-index: 120;
  display: none; place-items: center; padding: 24px;
  background: rgba(6, 7, 15, .78);
}
.pq-modal-backdrop.open { display: grid; }
.pq-modal {
  width: min(560px, 100%);
  background: var(--surface);
  border: 3px solid var(--border-hi);
  box-shadow: var(--shadow-hi);
  padding: 22px;
}
.pq-modal h2 {
  font-size: 16px;
  color: var(--gold);
  margin-bottom: 16px;
}
.pq-modal { max-height: calc(100vh - 48px); overflow: auto; }
.pq-field { display: grid; gap: 7px; margin-bottom: 14px; }
.pq-field label {
  font-family: var(--font-cn);
  font-size: 13px;
  color: var(--muted);
}
.pq-field input,
.pq-field textarea,
.pq-field select {
  width: 100%;
  background: var(--shell);
  border: 3px solid var(--border);
  color: var(--fg);
  font-family: var(--font-cn);
  font-size: 15px;
  padding: 11px 12px;
  outline: none;
}
.pq-field textarea { min-height: 110px; resize: vertical; }
.pq-field input:focus,
.pq-field textarea:focus,
.pq-field select:focus { border-color: var(--gold); }
.pq-actions { display: flex; gap: 12px; justify-content: flex-end; flex-wrap: wrap; margin-top: 18px; }
.pq-toast {
  position: fixed; right: 22px; bottom: 22px; z-index: 140;
  max-width: min(360px, calc(100vw - 44px));
  background: var(--surface-2);
  border: 3px solid var(--green);
  color: var(--fg);
  box-shadow: var(--shadow);
  padding: 12px 14px;
  font-family: var(--font-cn);
  font-size: 13px;
  display: none;
}
.pq-toast.show { display: block; }
.pq-wizard { width: min(720px, 100%); }
.pq-wizard-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}
.pq-wizard-steps span {
  border: 3px solid var(--border);
  background: var(--shell);
  color: var(--muted);
  font-family: var(--font-pixel);
  font-size: 10px;
  text-align: center;
  padding: 8px 0;
}
.pq-wizard-steps span.on {
  border-color: var(--gold);
  color: var(--gold);
  box-shadow: 0 0 12px rgba(245,197,66,.22);
}
.pq-wizard-step h3 {
  font-family: var(--font-cn);
  font-size: 17px;
  color: var(--cyan);
  margin-bottom: 14px;
}
.pq-saved-list { margin-top: 14px; display: grid; gap: 10px; }
.pq-saved-item {
  border: 3px solid var(--border);
  background: var(--bg-2);
  padding: 12px;
  font-family: var(--font-cn);
  font-size: 13px;
}
.upload.has-file { color: var(--green); border-color: var(--green); }
.focus-controls { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.tl-item.is-hidden { display: none; }
.project-brief-grid,
.project-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.project-brief-item {
  border: 3px solid var(--border);
  background: var(--bg-2);
  padding: 14px;
}
.project-brief-item b {
  display: block;
  color: var(--gold);
  font-family: var(--font-cn);
  font-size: 13px;
  margin-bottom: 8px;
}
.project-flow-list,
.project-resource-list,
.project-risk-list,
.project-question-list,
.project-missing-list {
  display: grid;
  gap: 12px;
}
.project-flow-item,
.project-resource-item,
.project-risk-item,
.project-question-item,
.project-missing-item {
  border: 3px solid var(--border);
  background: var(--surface);
  padding: 14px;
}
.project-flow-item h4,
.project-resource-item h4,
.project-risk-item h4,
.project-question-item h4,
.project-missing-item h4 {
  font-family: var(--font-cn);
  color: var(--fg);
  font-size: 15px;
  margin-bottom: 8px;
}
@media (max-width: 760px) {
  .project-brief-grid,
  .project-guide-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   响应式
   ========================================================================= */
@media (max-width: 980px) {
  .dash-grid { grid-template-columns: 1fr; }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--shell);
    border-bottom: 3px solid var(--border); padding: 8px 24px 18px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 2px solid var(--border); }
  .nav-toggle {
    display: grid; place-items: center; margin-left: auto;
    width: 42px; height: 42px; background: var(--surface);
    border: 3px solid var(--border); color: var(--gold);
    font-family: var(--font-pixel); font-size: 14px; cursor: pointer;
  }
  .nav-right .xp-chip { display: none; }
  .nav-inner { flex-wrap: wrap; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .g-2, .g-3 { grid-template-columns: 1fr; }
  .section { padding: 44px 0; }
  .section-head h2 { font-size: 18px; }
  h1 { font-size: 26px !important; }
}
@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .g-4 { grid-template-columns: 1fr; }
  .stat-num { font-size: 24px; }
  .card { padding: 18px; }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}