/* ===== Reset & Variables ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#e53e3e;--primary-light:#fc8181;--primary-dark:#c53030;
  --bg:#fefefe;--bg-alt:#f7fafc;--bg-card:#fff;
  --text:#1a202c;--text-light:#4a5568;--text-muted:#a0aec0;
  --border:#e2e8f0;--border-dark:#cbd5e0;
  --shadow-sm:0 1px 3px rgba(0,0,0,.06);--shadow:0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:0 8px 30px rgba(0,0,0,.1);
  --radius:12px;--radius-sm:8px;
  --font-main:'Noto Sans SC','Inter',sans-serif;
  --transition:all .2s ease;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1100px;margin:0 auto;padding:0 15px}

/* ===== Header ===== */
header{background:#fff;border-bottom:1px solid var(--border);position:relative;z-index:100}
@media(min-width:768px){header{position:sticky;top:0}}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:var(--primary)}
.logo span{color:var(--text)}
.desktop-nav{display:none;align-items:center;gap:4px}
.desktop-nav a{padding:8px 16px;font-size:14px;font-weight:500;color:var(--text-light);border-radius:var(--radius-sm);transition:var(--transition)}
.desktop-nav a:hover,.desktop-nav a.active{background:#fff5f5;color:var(--primary)}
.mobile-menu-btn{display:block;background:0;border:1px solid var(--border);padding:8px 14px;border-radius:var(--radius-sm);font-size:18px;cursor:pointer;color:var(--text);min-width:44px;min-height:44px}
.mobile-menu{display:none;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);padding:8px 20px 16px;flex-direction:column;gap:4px}
.mobile-menu.open{display:flex}
.mobile-menu a{display:block;padding:12px 16px;font-size:15px;font-weight:500;color:var(--text-light);border-radius:var(--radius-sm)}
.mobile-menu a:hover{background:#fff5f5;color:var(--primary)}
@media(min-width:768px){.desktop-nav{display:flex}.mobile-menu-btn{display:none}}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#fff5f5 0%,#fefefe 50%,#fffff0 100%);padding:28px 0 20px;text-align:center}
.hero-title{font-size:32px;font-weight:900;color:var(--text);margin-bottom:8px;line-height:1.3}
.hero-title .hl{color:var(--primary)}
.hero-sub{font-size:15px;color:var(--text-light);max-width:480px;margin:0 auto;line-height:1.6}
@media(min-width:768px){.hero{padding:48px 0 32px}.hero-title{font-size:40px}.hero-sub{font-size:17px}}

/* ===== Search Area ===== */
.search-area{margin-top:-12px;margin-bottom:20px}
.search-box{display:flex;gap:10px;background:#fff;border-radius:14px;padding:5px;box-shadow:var(--shadow);border:1px solid var(--border)}
.char-input{flex:1;min-width:0;border:0;outline:0;padding:14px 18px;font-size:18px;font-family:var(--font-main);background:0;color:var(--text)}
.char-input::placeholder{color:var(--text-muted)}
.search-btn{background:var(--primary);color:#fff;border:0;border-radius:12px;padding:14px 28px;font-size:16px;font-weight:700;cursor:pointer;white-space:nowrap;font-family:var(--font-main);transition:var(--transition);min-width:120px}
.search-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}
.search-btn:active{transform:translateY(0)}
.quick-chars{margin-top:14px;display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.quick-label{font-size:13px;color:var(--text-muted);margin-right:2px}
.quick-char{background:#fff;border:1px solid var(--border);padding:6px 14px;border-radius:99px;font-size:14px;font-family:var(--font-main);cursor:pointer;color:var(--text);transition:var(--transition)}
.quick-char:hover{border-color:var(--primary);color:var(--primary);background:#fff5f5;transform:translateY(-1px)}

/* ===== Empty State ===== */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 20px;text-align:center}
.empty-icon{font-size:64px;margin-bottom:16px}
.empty-state h2{font-size:22px;font-weight:700;color:var(--text);margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--text-light);max-width:420px;line-height:1.7}

/* ===== Tool Panel ===== */
.tool-panel{background:var(--bg-card);border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:18px;margin-bottom:32px}

/* Character Info Bar */
.char-info-bar{display:flex;align-items:center;gap:16px;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.char-display-wrap{flex-shrink:0}
.char-display{width:72px;height:72px;background:var(--bg-alt);border:2px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:900;color:#2d3748;text-shadow:0 2px 4px rgba(0,0,0,.1)}
.quiz-hint-bubble{display:none;position:absolute;top:-56px;left:50%;transform:translateX(-50%);background:#2d3748;color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;line-height:1.6;white-space:nowrap;z-index:99;box-shadow:0 4px 20px rgba(0,0,0,.2);animation:hintPulse .5s ease;pointer-events:none}
.quiz-hint-bubble::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid #2d3748}
@keyframes hintPulse{0%{opacity:0;transform:translateX(-50%) translateY(-6px)}100%{opacity:1;transform:translateX(-50%) translateY(0)}}
.char-stats{display:flex;gap:24px;flex-wrap:wrap;flex:1}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.stat-value{font-size:18px;font-weight:700;color:var(--text);font-family:var(--font-main)}

/* Canvas */
.canvas-wrapper{display:flex;justify-content:center;margin-bottom:16px}
.canvas-container{position:relative;width:300px;height:300px;border-radius:var(--radius-sm);overflow:hidden;background:#fff}
@media(max-width:380px){.canvas-container{width:280px;height:280px}}
.grid-bg{position:absolute;inset:0;z-index:0;transition:opacity var(--transition);pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cline x1='0' y1='0' x2='0' y2='300' stroke='%2394a3b8' stroke-width='1.5' stroke-dasharray='7,5'/%3E%3Cline x1='150' y1='0' x2='150' y2='300' stroke='%2394a3b8' stroke-width='1.5' stroke-dasharray='7,5'/%3E%3Cline x1='300' y1='0' x2='300' y2='300' stroke='%2394a3b8' stroke-width='1.5' stroke-dasharray='7,5'/%3E%3Cline x1='0' y1='0' x2='300' y2='0' stroke='%2394a3b8' stroke-width='1.5' stroke-dasharray='7,5'/%3E%3Cline x1='0' y1='150' x2='300' y2='150' stroke='%2394a3b8' stroke-width='1.5' stroke-dasharray='7,5'/%3E%3Cline x1='0' y1='300' x2='300' y2='300' stroke='%2394a3b8' stroke-width='1.5' stroke-dasharray='7,5'/%3E%3Cline x1='75' y1='0' x2='75' y2='300' stroke='%23cbd5e0' stroke-width='0.8' stroke-dasharray='4,5'/%3E%3Cline x1='225' y1='0' x2='225' y2='300' stroke='%23cbd5e0' stroke-width='0.8' stroke-dasharray='4,5'/%3E%3Cline x1='0' y1='75' x2='300' y2='75' stroke='%23cbd5e0' stroke-width='0.8' stroke-dasharray='4,5'/%3E%3Cline x1='0' y1='225' x2='300' y2='225' stroke='%23cbd5e0' stroke-width='0.8' stroke-dasharray='4,5'/%3E%3C/svg%3E");background-size:100% 100%}
.canvas-container.no-grid .grid-bg{opacity:0}
.canvas-container.no-grid .grid-bg{opacity:0}
.writer-layer,.quiz-layer{position:absolute;inset:0;z-index:1;display:flex;align-items:center;justify-content:center}
.writer-layer svg,.quiz-layer svg{max-width:100%;max-height:100%;width:100%;height:100%}
.writer-layer svg{filter:drop-shadow(2px 3px 4px rgba(0,0,0,.12))}
.quiz-layer{display:none;z-index:2;background:rgba(255,255,255,.25)}
.quiz-layer.active{display:flex}
.quiz-complete-overlay{display:flex;position:absolute;inset:0;z-index:10;background:rgba(255,255,255,.85);align-items:center;justify-content:center;flex-direction:column;gap:8px;opacity:0;pointer-events:none;transition:opacity .2s}
.quiz-complete-overlay.show{opacity:1;pointer-events:auto}
.quiz-complete-text{font-size:22px;font-weight:800;text-align:center;color:var(--primary);line-height:1.6;animation:hintPulse .5s ease}

/* Controls */
.controls-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px;padding:12px;background:var(--bg-alt);border-radius:var(--radius-sm);border:1px solid var(--border)}
.control-group{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ctrl-btn{padding:9px 16px;border:1px solid var(--border);border-radius:8px;font-size:13px;font-weight:600;font-family:var(--font-main);background:#fff;color:var(--text);cursor:pointer;transition:var(--transition);white-space:nowrap}
.ctrl-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary);background:#fff5f5;transform:translateY(-1px)}
.ctrl-btn:disabled{opacity:.4;cursor:not-allowed}
.ctrl-btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.ctrl-btn.primary:hover:not(:disabled){background:var(--primary-dark)}
.ctrl-btn.active{border-color:var(--primary);color:var(--primary);background:#fff5f5}
.speed-label{font-size:13px;color:var(--text-light);font-weight:500}
.speed-slider{width:100px;accent-color:var(--primary)}
#speedVal{font-size:13px;font-weight:600;color:var(--text);min-width:32px;text-align:center}

/* Quiz Section */
.quiz-section{padding:16px;background:linear-gradient(135deg,#fffbeb,#fff5f5);border-radius:var(--radius-sm);border:1px solid #fbd38d;margin-bottom:16px}
.quiz-title{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px}
.quiz-desc{font-size:14px;color:var(--text-light);line-height:1.6;margin-bottom:14px}
.quiz-buttons{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.quiz-score{font-size:14px;color:var(--text-light)}
.quiz-score strong{color:var(--primary);font-size:16px}
.quiz-message{margin-top:12px;padding:10px 16px;border-radius:8px;font-size:14px;font-weight:500;display:none}
.quiz-message.active{display:block;background:#ebf8ff;color:#2b6cb0;border:1px solid #bee3f8}
.quiz-message.success{display:block;background:#f0fff4;color:#276749;border:1px solid #c6f6d5}
.quiz-message.error{display:block;background:#fff5f5;color:#c53030;border:1px solid #fed7d7}
.quiz-message.complete{display:block;background:#faf5ff;color:#6b46c1;border:1px solid #e9d8fd}
.quiz-message.hint{display:block;background:#fffff0;color:#975a16;border:1px solid #fefcbf}

/* Stroke List */
.stroke-list-section{margin-top:0;margin-bottom: 16px;}
.stroke-list-title{font-size:15px;font-weight:700;margin-bottom:10px;color:var(--text)}
.stroke-list{display:flex;flex-wrap:wrap;gap:8px}
.stroke-item{display:flex;align-items:center;gap:8px;padding:8px 14px;background:#fff;border:1.5px solid #cbd5e0;border-radius:8px;font-size:13px;transition:var(--transition);box-shadow:0 1px 2px rgba(0,0,0,.04);cursor:pointer}
.stroke-item:hover{border-color:var(--primary);background:#fff5f5;box-shadow:0 2px 8px rgba(229,62,62,.1)}
.stroke-item.selected{border-color:var(--primary);background:#fff5f5;box-shadow:0 0 0 3px rgba(229,62,62,.15)}
.stroke-num{width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.stroke-name{color:var(--text);font-weight:600;font-size:13px}
.stroke-action{width:26px;height:26px;border-radius:50%;background:#fff5f5;border:1.5px solid var(--primary);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:10px;color:var(--primary);transition:var(--transition);flex-shrink:0}
.stroke-action:hover{background:var(--primary);color:#fff}
.stroke-list.disabled .stroke-item{opacity:.4;pointer-events:none;filter:grayscale(1)}
.stroke-list.disabled .stroke-action{cursor:not-allowed}

/* ===== Features Section ===== */
.features-section{padding:40px 0;background:var(--bg-alt);border-top:1px solid var(--border)}
.section-title{text-align:center;font-size:24px;font-weight:800;color:var(--text);margin-bottom:28px}
.features-grid{display:grid;grid-template-columns:1fr;gap:14px}
.feature-card{background:#fff;border-radius:var(--radius-sm);padding:20px 18px;border:1px solid var(--border);transition:var(--transition)}
.feature-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.feature-icon{font-size:36px;margin-bottom:14px}
.feature-card h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.6}
@media(min-width:640px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.features-grid{grid-template-columns:repeat(3,1fr)}}

/* ===== Content Pages (About/Contact/Privacy) ===== */
.content-page{max-width:1100px;margin:0 auto;padding:32px 20px 48px}
.content-page h1{font-size:30px;font-weight:800;color:var(--text);margin-bottom:10px}
.content-page .update-date{font-size:13px;color:var(--text-muted);margin-bottom:36px}
.content-page h2{font-size:20px;font-weight:700;color:var(--text);margin:32px 0 12px}
.content-page h3{font-size:16px;font-weight:600;color:var(--text);margin:20px 0 8px}
.content-page p{font-size:15px;line-height:1.8;color:var(--text-light);margin-bottom:14px}
.content-page ul{margin:10px 0 18px 24px}
.content-page ul li{font-size:15px;line-height:1.8;color:var(--text-light);margin-bottom:6px}
.content-page a{color:var(--primary);text-decoration:underline}
.content-page a:hover{color:var(--primary-dark)}

/* ===== Footer ===== */
footer{background:#1a202c;padding:36px 0 24px;color:#a0aec0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;text-align:center}
.footer-brand{font-size:18px;font-weight:800;color:#fff;margin-bottom:10px}
.footer-desc{font-size:13px;color:#a0aec0;max-width:320px;margin:0 auto}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.footer-links a{font-size:14px;color:#a0aec0;transition:var(--transition)}
.footer-links a:hover{color:#fff}
.footer-right{}
.footer-disclaimer{font-size:11px;color:#718096;text-transform:uppercase;letter-spacing:.04em;margin-bottom:14px}
.footer-copy{font-size:13px;color:#a0aec0}
@media(min-width:768px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;text-align:left;gap:40px}
  .footer-desc{margin:0}
  .footer-links{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-right{text-align:right}
}

/* ===== Mobile tweaks ===== */
@media(max-width:640px){
  .hero{padding:20px 0 14px}
  .hero-title{font-size:26px}
  .hero-sub{font-size:14px}
  .char-info-bar{flex-direction:column;align-items:flex-start;gap:12px}
  .char-stats{gap:12px}
  .controls-bar{flex-direction:column;align-items:stretch;gap:8px}
  .control-group{justify-content:center}
  .canvas-container{width:280px;height:280px}
  .search-box{flex-direction:column}
  .search-btn{border-radius:12px;text-align:center;padding:12px 20px}
  .content-page h1{font-size:24px}
  .tool-panel{padding:14px;margin-bottom:24px}
  .quiz-section{padding:14px}
  .features-section{padding:32px 0}
}


.ad-container {max-width: 1070px;margin: 15px auto;background:var(--bg);border:1px dashed #4cc9f0;border-radius:8px;padding:5px;text-align:center;display:flex;align-items:center;justify-content:center;flex-direction:column;box-shadow:0 3px 8px rgba(0,0,0,0.15);}
.ad-label { text-transform: uppercase;color:#4cc9f0;font-size:0.7rem;margin-bottom:5px;display:flex;align-items:center;justify-content:center;gap:6px;}
.ad-content {color:#888;padding:5px;font-style:italic;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.05);border-radius:6px;width:100%;font-size:0.9rem;}