/*
 * 游戏小站 - Apple Design System
 * 遵循 DESIGN-apple.md 设计规范
 */
:root {
  --accent: #0066cc;
  --accent-hover: #0071e3;
  --accent-on-dark: #2997ff;
  --ink: #1d1d1f;
  --ink-muted-80: #333333;
  --ink-muted-48: #7a7a7a;
  --body-on-dark: #ffffff;
  --body-muted: #cccccc;
  --canvas: #ffffff;
  --parchment: #f5f5f7;
  --pearl: #fafafc;
  --tile-1: #272729;
  --tile-2: #2a2a2c;
  --tile-3: #252527;
  --surface-black: #000000;
  --hairline: #e0e0e0;
  --divider-soft: #f0f0f0;
  --on-primary: #ffffff;
  --font-display: "SF Pro Display", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-text: "SF Pro Text", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius-sm: 8px;
  --radius-md: 11px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  --nav-height: 44px;
  --section-padding: 80px;
  --content-max: 980px;
  --grid-max: 1440px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-family:var(--font-text);font-size:17px;font-weight:400;line-height:1.47;letter-spacing:-0.374px;color:var(--ink);-webkit-font-smoothing:antialiased}
body{background:var(--canvas);padding-top:var(--nav-height);min-height:100vh}
h1,h2,h3,h4{font-family:var(--font-display)}
h1{font-size:56px;font-weight:600;line-height:1.07;letter-spacing:-0.28px}
h2{font-size:40px;font-weight:600;line-height:1.1;letter-spacing:0}
h3{font-size:28px;font-weight:600;line-height:1.14;letter-spacing:.196px}
h4{font-size:21px;font-weight:600;line-height:1.19;letter-spacing:.231px}
p{margin-bottom:.8em;max-width:600px}
a{color:var(--accent);text-decoration:none;transition:opacity .2s}
a:hover{opacity:.8}
.container{width:100%;max-width:var(--grid-max);margin:0 auto;padding:0 20px}

/* Nav */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-height);background:var(--surface-black)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--grid-max);margin:0 auto;padding:0 20px}
.nav-logo{display:flex;align-items:center;gap:8px;color:var(--body-on-dark);text-decoration:none;font-size:12px;letter-spacing:-.12px;opacity:.8}
.nav-logo:hover{opacity:1;color:var(--body-on-dark)}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-link{color:var(--body-on-dark);text-decoration:none;font-size:12px;letter-spacing:-.12px;opacity:.6}
.nav-link:hover,.nav-link.active{opacity:1;color:var(--body-on-dark)}
.nav-right{display:flex;align-items:center;gap:12px}
.search-form{position:relative}
.search-input{background:rgba(255,255,255,.12);border:none;border-radius:var(--radius-pill);color:var(--body-on-dark);font-size:12px;padding:6px 16px 6px 28px;width:160px;outline:none}
.search-input:focus{background:rgba(255,255,255,.18)}
.search-btn{position:absolute;left:8px;top:50%;transform:translateY(-50%);background:none;border:none;color:rgba(255,255,255,.4);padding:0}
.user-dropdown{position:relative}
.user-btn{display:flex;align-items:center;gap:6px;background:var(--ink);border:none;border-radius:var(--radius-sm);color:var(--body-on-dark);padding:5px 10px;cursor:pointer;font-size:12px}
.user-btn:hover{opacity:.8}
.user-avatar{width:20px;height:20px;border-radius:50%;object-fit:cover}
.user-name{max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dropdown-menu{display:none;position:absolute;right:0;top:calc(100% + 8px);background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-md);min-width:160px;box-shadow:0 4px 20px rgba(0,0,0,.08);z-index:100}

.dropdown-item{display:block;padding:10px 16px;color:var(--ink);text-decoration:none;font-size:14px}
.dropdown-item:hover{background:var(--parchment);color:var(--accent)}
.dropdown-divider{height:1px;background:var(--hairline);margin:4px 0}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-family:var(--font-text);font-size:14px;border-radius:var(--radius-pill);padding:11px 22px;border:none;cursor:pointer;text-decoration:none;transition:all .2s;white-space:nowrap}
.btn-primary{background:var(--accent);color:var(--on-primary)}
.btn-primary:hover{background:var(--accent-hover);color:var(--on-primary)}
.btn-primary:active{transform:scale(.95)}
.btn-secondary{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn-secondary:active{transform:scale(.95)}
.btn-dark{background:var(--ink);color:var(--body-on-dark);border-radius:var(--radius-sm);padding:8px 15px;font-size:14px}
.btn-lg{font-size:18px;font-weight:300;padding:14px 28px}
.btn-sm{font-size:12px;padding:6px 14px}
.btn-block{display:flex;width:100%}
.btn-favorite{background:var(--pearl);color:var(--ink-muted-80);border-radius:var(--radius-pill);padding:8px 18px;border:none;cursor:pointer;font-size:14px}
.btn-favorite.active{background:rgba(0,102,204,.08);color:var(--accent)}
.btn-danger{background:#dc3545;color:white;border-radius:var(--radius-sm);padding:6px 14px;border:none;cursor:pointer;font-size:12px}

/* Sections */
.main-content{min-height:calc(100vh - var(--nav-height))}
.section{padding:var(--section-padding) 0;width:100%}
.section-header{text-align:center;margin-bottom:48px}
.section-header h3{font-size:40px;font-weight:600;line-height:1.1;letter-spacing:0;margin-bottom:8px}
.section-header p{margin:0 auto;color:var(--ink-muted-48);font-size:21px;font-weight:300}
.see-all{display:inline-block;margin-top:8px;font-size:17px;color:var(--accent)}
.tile-light{background:var(--canvas)}
.tile-parchment{background:var(--parchment)}
.tile-dark{background:var(--tile-1);color:var(--body-on-dark)}
.tile-dark h3{color:var(--body-on-dark)}

/* Game Grid & Card */
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;max-width:980px;margin:0 auto}
.game-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);overflow:hidden;transition:all .2s}
.game-card:hover{border-color:var(--accent);box-shadow:0 2px 12px rgba(0,0,0,.04)}
.game-card a{color:var(--ink);text-decoration:none;display:block}
.game-card-thumb{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:var(--parchment)}
.game-card-thumb img{width:100%;height:100%;object-fit:cover}
.game-card-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:48px}
.game-card-plays{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.6);color:white;border-radius:var(--radius-pill);padding:2px 10px;font-size:11px;backdrop-filter:blur(4px)}
.game-card-info{padding:14px 16px}
.game-card-title{font-family:var(--font-text);font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Category */
.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;max-width:680px;margin:0 auto}
.category-card{display:flex;flex-direction:column;align-items:center;gap:8px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);padding:24px 16px;text-decoration:none;color:var(--ink)}
.category-card:hover{border-color:var(--accent);color:var(--ink)}
.category-icon{font-size:36px}
.category-name{font-size:15px;font-weight:600}
.category-count{font-size:12px;color:var(--ink-muted-48)}

/* Game Detail */
.game-detail{max-width:700px;margin:0 auto;padding:60px 20px}
.game-detail-header h1{font-size:40px}
.game-detail-actions{display:flex;gap:12px;align-items:center;margin-bottom:32px}
.game-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.game-meta-item{font-size:14px;color:var(--ink-muted-48)}
.category-tag{display:inline-block;background:var(--parchment);color:var(--ink-muted-48);border-radius:var(--radius-pill);padding:4px 12px;font-size:12px;text-decoration:none}

/* Game Play */
.game-play-page{background:var(--tile-3);min-height:calc(100vh - var(--nav-height));display:flex;flex-direction:column}
.game-play-container{flex:1;display:flex;align-items:center;justify-content:center;padding:20px}
.game-iframe{max-width:100%;border-radius:var(--radius-lg);box-shadow:0 4px 30px rgba(0,0,0,.3)}
.game-placeholder{text-align:center;color:var(--body-on-dark)}
.game-placeholder span{font-size:80px}
.game-play-toolbar{background:rgba(37,37,39,.95);backdrop-filter:blur(20px);border-top:1px solid rgba(255,255,255,.08);height:52px;display:flex;align-items:center}
.toolbar-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.toolbar-title{color:var(--body-on-dark);font-size:14px}
.toolbar-inner .btn-outline{background:rgba(255,255,255,.08);color:var(--body-on-dark);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);padding:6px 14px;font-size:12px;cursor:pointer}

/* History */
.history-list{max-width:600px;margin:0 auto}
.history-item{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--hairline)}
.history-game{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.history-thumb{width:60px;height:60px;border-radius:var(--radius-sm);overflow:hidden;background:var(--parchment)}
.history-thumb img{width:100%;height:100%;object-fit:cover}

/* Auth/Login */
.auth-page{min-height:60vh;display:flex;align-items:center;justify-content:center;padding:40px 20px}
.auth-card{text-align:center;max-width:420px}
.auth-icon{font-size:64px;margin-bottom:16px}
.auth-card h1{font-size:34px;margin-bottom:8px}
.auth-desc{color:var(--ink-muted-48);margin-bottom:32px}

/* Empty / 404 */
.empty-state{text-align:center;padding:60px 20px}
.empty-icon{font-size:48px;margin-bottom:12px}
.error-page{text-align:center;padding:80px 20px}
.error-code{font-family:var(--font-display);font-size:120px;font-weight:600;color:var(--hairline)}
.error-icon{font-size:64px}
.error-page h1{font-size:28px}

/* Pagination */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:48px}
.page-link{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-pill);font-size:13px;color:var(--ink);text-decoration:none}
.page-link.active{background:var(--accent);border-color:var(--accent);color:var(--on-primary)}

/* Profile */
.profile-card{max-width:500px;margin:0 auto;background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);padding:40px;text-align:center}
.profile-avatar img{width:80px;height:80px;border-radius:50%;object-fit:cover}
.profile-stats{display:flex;justify-content:center;gap:40px;margin-top:24px;padding-top:24px;border-top:1px solid var(--hairline)}
.stat-value{display:block;font-family:var(--font-display);font-size:24px;font-weight:600}
.stat-label{font-size:12px;color:var(--ink-muted-48)}

/* Hero Carousel */
.hero-carousel{background:var(--surface-black);overflow:hidden}
.carousel-slide{display:none;padding:80px 0}
.carousel-slide.active{display:block;animation:fadeIn .6s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.carousel-content{display:flex;align-items:center;gap:40px;max-width:980px;margin:0 auto;color:var(--body-on-dark)}
.carousel-text h2{font-size:40px}
.carousel-text p{font-size:21px;color:var(--body-muted);max-width:400px}
.carousel-games{display:grid;grid-template-columns:1fr 1fr;gap:12px;flex-shrink:0}
.carousel-game-card{display:flex;flex-direction:column;gap:8px;background:rgba(255,255,255,.06);border-radius:var(--radius-lg);padding:16px;text-decoration:none;color:var(--body-on-dark);min-width:160px}
.carousel-game-card:hover{background:rgba(255,255,255,.1);color:var(--body-on-dark)}
.carousel-game-thumb{height:80px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:32px}
.carousel-dots{display:flex;justify-content:center;gap:8px;padding-bottom:20px}
.dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.3);cursor:pointer}
.dot.active{background:var(--body-on-dark)}

/* Footer */
.footer{background:var(--parchment);color:var(--ink-muted-48);padding:40px 0}
.footer-content{display:flex;justify-content:space-between;max-width:980px;margin:0 auto;flex-wrap:wrap;gap:24px;padding:0 20px}
.footer-logo{font-size:17px;font-weight:600;color:var(--ink)}
.footer-links{display:flex;flex-direction:column;gap:6px}
.footer-links a{font-size:12px;color:var(--ink-muted-48);text-decoration:none}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{text-align:center;margin-top:24px;padding-top:24px;border-top:1px solid var(--hairline)}

/* Admin Layout */
.admin-layout{display:flex;min-height:calc(100vh - var(--nav-height))}
.admin-sidebar{width:220px;background:var(--ink);color:var(--body-on-dark);padding:24px;flex-shrink:0}
.admin-sidebar h3{font-size:17px;margin-bottom:20px;color:var(--body-on-dark)}
.admin-nav{display:flex;flex-direction:column;gap:4px}
.admin-nav-link{color:var(--body-muted);text-decoration:none;padding:8px 12px;border-radius:var(--radius-sm);font-size:14px}
.admin-nav-link:hover,.admin-nav-link.active{background:rgba(255,255,255,.08);color:var(--body-on-dark)}
.admin-content{flex:1;padding:32px 40px;background:var(--parchment)}
.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.admin-header h2{font-size:28px}
.stat-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:32px}
.stat-card{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--radius-lg);padding:24px;display:flex;align-items:center;gap:16px}
.stat-icon{font-size:28px}
.stat-number{font-family:var(--font-display);font-size:28px;font-weight:600;display:block}

/* Admin Table */
.admin-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--canvas);border-radius:var(--radius-lg);overflow:hidden}
.admin-table th{background:var(--parchment);padding:12px 16px;text-align:left;font-size:12px;font-weight:600;color:var(--ink-muted-48);border-bottom:1px solid var(--hairline)}
.admin-table td{padding:12px 16px;border-bottom:1px solid var(--divider-soft);font-size:14px}
.admin-table tr:last-child td{border-bottom:none}
.action-cell{display:flex;gap:8px}
.inline-form{display:inline}

/* Tags */
.tag{display:inline-block;border-radius:var(--radius-pill);padding:2px 10px;font-size:11px;font-weight:600}
.tag-active{background:rgba(0,102,204,.08);color:var(--accent)}
.tag-inactive{background:rgba(0,0,0,.04);color:var(--ink-muted-48)}

/* Forms */
.admin-form{max-width:600px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--ink-muted-80)}
.form-control{width:100%;padding:12px 16px;border:1px solid var(--hairline);border-radius:var(--radius-sm);font-size:15px;color:var(--ink);background:var(--canvas);outline:none}
.form-control:focus{border-color:var(--accent)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-actions{display:flex;gap:12px;margin-top:24px}
.checkbox-group{display:flex;flex-wrap:wrap;gap:8px}
.checkbox-label{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--hairline);border-radius:var(--radius-pill);font-size:13px;cursor:pointer}
.checkbox-label:hover{border-color:var(--accent)}

/* Toast */
.toast-container{position:fixed;top:60px;right:20px;z-index:9999}
.toast{background:var(--ink);color:var(--body-on-dark);padding:14px 20px;border-radius:var(--radius-pill);font-size:14px;margin-bottom:8px;box-shadow:0 4px 20px rgba(0,0,0,.15)}
.toast-success{background:#248a3d}
.toast-error{background:#dc3545}

/* ========== Responsive ========== */
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:18px;height:1px;background:rgba(255,255,255,.6);margin:4px 0;transition:all .25s}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}

@media(max-width:1068px){
  :root{--section-padding:60px}
  h1{font-size:40px}
  .game-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
}

@media(max-width:834px){
  .nav-links{display:none}
  .nav-links.show{display:flex;flex-direction:column;position:fixed;top:var(--nav-height);left:0;right:0;background:var(--surface-black);padding:16px 20px;gap:12px;border-top:1px solid rgba(255,255,255,.08)}
  .nav-link{font-size:15px;padding:8px 0;opacity:.8}
  .nav-toggle{display:inline-flex!important;flex-direction:column;align-items:center;justify-content:center}
  .carousel-content{flex-direction:column;text-align:center}
  .carousel-games{grid-template-columns:repeat(2,1fr)}
  .section-header h3{font-size:32px}
  .search-form .search-input{width:120px}

  /* Admin */
  .admin-layout{flex-direction:column}
  .admin-sidebar{width:100%;padding:16px;display:flex;flex-wrap:wrap;gap:8px}
  .admin-sidebar h3{width:100%;margin-bottom:8px}
  .admin-nav{flex-direction:row;overflow-x:auto;gap:4px;width:100%}
  .admin-nav-link{white-space:nowrap;font-size:13px;padding:6px 12px}
  .admin-content{padding:20px 16px}
  h1{font-size:34px}
  :root{--section-padding:48px}

  /* Game detail */
  .game-detail{padding:40px 16px}
  .game-detail-header h1{font-size:28px}

  /* Profile */
  .profile-stats{gap:24px}

  /* History */
  .history-thumb{width:48px;height:48px}

  /* Tables */
  .admin-table{font-size:13px;display:block;overflow-x:auto}
  .admin-table th,.admin-table td{padding:10px 12px;white-space:nowrap}

  /* Forms */
  .form-row{grid-template-columns:1fr}

  /* Hero */
  .carousel-slide{padding:48px 0}
  .carousel-text h2{font-size:28px}
  .carousel-text p{font-size:17px}
}

@media(max-width:640px){
  .game-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  h1{font-size:28px}
  .container{padding:0 12px}

  /* Nav mobile */
  .nav-container{padding:0 12px}
  .nav-right{gap:8px}
  .search-form .search-input{width:100px;padding:5px 10px 5px 24px;font-size:11px}
  .user-name{max-width:60px;font-size:11px}
  .user-btn{padding:4px 8px}
  .user-avatar{width:18px;height:18px}
  .user-avatar-link{width:24px;height:24px}

  /* Cards */
  .game-card-info{padding:10px 12px}
  .game-card-title{font-size:13px}
  .game-card-thumb{aspect-ratio:16/10}

  /* Game detail */
  .game-detail-actions{flex-direction:column;align-items:stretch}
  .game-detail-actions .btn{justify-content:center}

  /* Play */
  .game-play-container{padding:12px}
  .game-play-toolbar .toolbar-inner{gap:8px}
  .toolbar-title{font-size:12px;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* Category */
  .category-grid{grid-template-columns:repeat(2,1fr);gap:10px;max-width:100%}
  .category-card{padding:16px 12px}
  .category-icon{font-size:28px}

  /* Auth */
  .auth-card h1{font-size:26px}

  /* History */
  .history-item{padding:12px;flex-wrap:wrap;gap:8px}

  /* Profile */
  .profile-card{padding:24px 16px}
  .profile-avatar img{width:64px;height:64px}
  .stat-value{font-size:20px}

  /* Footer */
  .footer-content{flex-direction:column;text-align:center;gap:16px}

  /* Admin */
  .admin-header{flex-direction:column;gap:12px;align-items:stretch}
  .admin-header .btn{width:100%;justify-content:center}
  .stat-cards{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat-card{padding:16px}
  .stat-number{font-size:22px}

  /* Pagination */
  .pagination{gap:4px;flex-wrap:wrap}
  .page-link{min-width:32px;height:32px;font-size:12px;padding:0 8px}

  /* Game play iframe area */
  .game-play-page{min-height:calc(100vh - var(--nav-height) - 52px)}
}

/* 手机超小屏 */
@media(max-width:400px){
  .game-grid{grid-template-columns:1fr 1fr;gap:8px}
  .section-header h3{font-size:26px}
  .section-header p{font-size:16px}

  .nav-links.show .nav-link{font-size:14px}
  .search-form .search-input{width:80px}
}

/* 头像链接（点击进个人设置） */
.user-avatar-link {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%; overflow: hidden;
  cursor: pointer; transition: opacity .2s; flex-shrink: 0;
}
.user-avatar-link:hover { opacity: .8; }
.user-avatar-link .user-avatar { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 下拉菜单改为点击触发 */
.user-dropdown { position: relative; }
.user-btn {
  display: flex; align-items: center; gap: 6px;
  background: var(--ink); border: none; border-radius: var(--radius-sm);
  color: var(--body-on-dark); padding: 5px 10px; cursor: pointer;
  font-size: 12px; font-family: var(--font-text); white-space: nowrap;
}
.user-btn:hover { opacity: .8; }
.dropdown-arrow { font-size: 8px; opacity: .5; margin-left: 2px; }
.dropdown-menu {
  display: none; position: absolute; right: 0; top: calc(100% + 6px);
  background: var(--canvas); border: 1px solid var(--hairline);
  border-radius: var(--radius-md); min-width: 150px;
  box-shadow: 0 4px 20px rgba(0,0,0,.1); z-index: 100;
}
.dropdown-menu.show { display: block; }
.dropdown-item {
  display: block; padding: 10px 16px; color: var(--ink); text-decoration: none;
  font-size: 13px; transition: background .15s;
}
.dropdown-item:hover { background: var(--parchment); color: var(--accent); }
.dropdown-divider { height: 1px; background: var(--hairline); margin: 4px 0; }