/* TextLint Pro - Style */
:root {
  --bg: #f8f9fb;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #5a5a7a;
  --text-muted: #8888a8;
  --border: #e2e4ea;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --radius: 10px;
  --radius-sm: 6px;
  --font: 'Segoe UI','Hiragino Kaku Gothic ProN','Noto Sans JP',sans-serif;
  --mono: 'Cascadia Code','Fira Code',monospace;
}
[data-theme="dark"] {
  --bg: #0f1117;
  --bg-card: #1a1b2e;
  --bg-input: #1e2035;
  --text: #e8e8f0;
  --text-secondary: #a0a0c0;
  --text-muted: #6a6a8a;
  --border: #2a2b40;
  --primary: #818cf8;
  --primary-hover: #6366f1;
  --primary-light: #1e1b4b;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,.4);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;transition:background .3s,color .3s;}

/* Header */
.header{background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow);}
.header-inner{max-width:1200px;margin:0 auto;padding:.7rem 1.5rem;display:flex;justify-content:space-between;align-items:center;}
.logo{display:flex;align-items:center;gap:.6rem;}
.logo-icon{width:36px;height:36px;background:var(--primary);color:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem;}
.logo-text{font-size:1.2rem;font-weight:700;color:var(--text);}
.logo-accent{color:var(--primary);}
.header-actions{display:flex;align-items:center;gap:1rem;}
.usage-badge{font-size:.8rem;color:var(--text-secondary);background:var(--primary-light);padding:.3rem .8rem;border-radius:20px;}
.theme-toggle{background:none;border:1px solid var(--border);border-radius:50%;width:36px;height:36px;cursor:pointer;font-size:1.1rem;color:var(--text);display:flex;align-items:center;justify-content:center;transition:all .2s;}
.theme-toggle:hover{border-color:var(--primary);color:var(--primary);}

/* Buttons */
.btn{padding:.5rem 1rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text);cursor:pointer;font-size:.85rem;transition:all .2s;font-family:var(--font);}
.btn:hover{border-color:var(--primary);color:var(--primary);}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff;}
.btn-sm{padding:.35rem .75rem;font-size:.8rem;}

/* Main Tool */
.main-tool{max-width:1200px;margin:0 auto;padding:1.5rem;}
.tool-container{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;min-height:500px;}
.tool-title{font-size:1.1rem;font-weight:700;color:var(--text);}

/* Input Section */
.input-section{display:flex;flex-direction:column;gap:.8rem;}
.input-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem;}
.input-actions{display:flex;gap:.4rem;}
.textarea-wrapper{position:relative;flex:1;display:flex;flex-direction:column;}
.textarea-wrapper textarea{width:100%;min-height:400px;flex:1;padding:1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-input);color:var(--text);font-size:.95rem;line-height:1.8;resize:vertical;font-family:var(--font);transition:border-color .2s;}
.textarea-wrapper textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1);}
.char-counter{position:absolute;bottom:10px;right:14px;font-size:.75rem;color:var(--text-muted);pointer-events:none;}
.seo-input{display:flex;align-items:center;gap:.8rem;}
.seo-input label{font-size:.85rem;color:var(--text-secondary);white-space:nowrap;}
.seo-input input{flex:1;padding:.45rem .8rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text);font-size:.85rem;font-family:var(--font);}
.seo-input input:focus{outline:none;border-color:var(--primary);}

/* Results Section */
.results-section{display:flex;flex-direction:column;gap:.8rem;}

/* Stats Dashboard */
.stats-dashboard{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.7rem;text-align:center;box-shadow:var(--shadow);}
.stat-value{font-size:1.3rem;font-weight:800;color:var(--primary);}
.stat-label{font-size:.7rem;color:var(--text-muted);margin-top:.1rem;}

/* Tabs */
.result-tabs{display:flex;gap:0;border-bottom:2px solid var(--border);}
.tab{padding:.6rem 1rem;border:none;background:none;color:var(--text-muted);cursor:pointer;font-size:.85rem;font-family:var(--font);border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s;display:flex;align-items:center;gap:.4rem;}
.tab:hover{color:var(--text);}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600;}
.tab-count{background:var(--error);color:#fff;font-size:.7rem;padding:.1rem .45rem;border-radius:10px;min-width:20px;text-align:center;}
.tab-count[data-count="0"]{background:var(--success);}

/* Tab Content */
.tab-content{display:none;flex:1;overflow-y:auto;max-height:500px;}
.tab-content.active{display:block;}

/* Issues */
.issues-empty{text-align:center;padding:3rem 1rem;color:var(--text-muted);}
.empty-icon{font-size:2.5rem;margin-bottom:.8rem;}
.issues-list{display:flex;flex-direction:column;gap:.5rem;padding:.5rem 0;}
.issue-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.8rem 1rem;cursor:pointer;transition:all .2s;border-left:3px solid var(--warning);}
.issue-item:hover{box-shadow:var(--shadow-md);border-color:var(--primary);}
.issue-item[data-severity="error"]{border-left-color:var(--error);}
.issue-item[data-severity="warning"]{border-left-color:var(--warning);}
.issue-item[data-severity="info"]{border-left-color:var(--info);}
.issue-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.3rem;}
.issue-type{font-size:.7rem;padding:.15rem .5rem;border-radius:10px;font-weight:600;}
.issue-type.error{background:#fef2f2;color:var(--error);}
.issue-type.warning{background:#fffbeb;color:#b45309;}
.issue-type.info{background:#eff6ff;color:var(--info);}
[data-theme="dark"] .issue-type.error{background:#3b1111;}
[data-theme="dark"] .issue-type.warning{background:#3b2e11;}
[data-theme="dark"] .issue-type.info{background:#112040;}
.issue-pos{font-size:.7rem;color:var(--text-muted);}
.issue-text{font-size:.85rem;color:var(--text);margin-bottom:.3rem;}
.issue-text mark{background:rgba(239,68,68,.15);color:var(--error);padding:.1rem .2rem;border-radius:3px;font-weight:600;}
.issue-suggestion{font-size:.8rem;color:var(--success);display:flex;align-items:center;gap:.3rem;}
.issue-suggestion::before{content:"-> ";font-weight:700;}

/* Detail Tab */
.detail-grid{display:flex;flex-direction:column;gap:1rem;padding:.5rem 0;}
.detail-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem;}
.detail-card h3{font-size:.9rem;margin-bottom:.8rem;color:var(--text);}
.detail-bars{display:flex;flex-direction:column;gap:.5rem;}
.bar-row{display:flex;align-items:center;gap:.6rem;}
.bar-label{font-size:.78rem;color:var(--text-secondary);width:80px;text-align:right;flex-shrink:0;}
.bar-track{flex:1;height:18px;background:var(--bg);border-radius:9px;overflow:hidden;position:relative;}
.bar-fill{height:100%;border-radius:9px;transition:width .5s ease-out;display:flex;align-items:center;justify-content:flex-end;padding-right:6px;}
.bar-value{font-size:.65rem;color:#fff;font-weight:700;white-space:nowrap;}

/* SEO Tab */
.seo-results{padding:.5rem 0;}
.seo-hint{text-align:center;color:var(--text-muted);padding:2rem 1rem;}
.seo-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem;margin-bottom:.8rem;}
.seo-card h4{font-size:.85rem;margin-bottom:.5rem;color:var(--text);}
.seo-metric{display:flex;justify-content:space-between;align-items:center;padding:.4rem 0;border-bottom:1px solid var(--border);font-size:.83rem;}
.seo-metric:last-child{border:none;}
.seo-metric .label{color:var(--text-secondary);}
.seo-metric .value{font-weight:700;}
.seo-metric .value.good{color:var(--success);}
.seo-metric .value.warn{color:var(--warning);}
.seo-metric .value.bad{color:var(--error);}

/* LP Sections */
.lp-section{padding:4rem 1.5rem;}
.lp-section-alt{background:var(--bg-card);}
.lp-inner{max-width:1000px;margin:0 auto;}
.section-title{text-align:center;font-size:1.6rem;margin-bottom:2.5rem;color:var(--text);position:relative;}
.section-title::after{content:'';display:block;width:50px;height:3px;background:var(--primary);margin:10px auto 0;border-radius:2px;}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;text-align:center;transition:transform .2s,box-shadow .2s;}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.feature-icon{font-size:2rem;margin-bottom:.8rem;}
.feature-card h3{font-size:1rem;margin-bottom:.5rem;color:var(--text);}
.feature-card p{font-size:.85rem;color:var(--text-secondary);line-height:1.6;}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;}
.step{text-align:center;}
.step-number{width:48px;height:48px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:800;margin:0 auto .8rem;}
.step h3{font-size:1rem;margin-bottom:.4rem;}
.step p{font-size:.85rem;color:var(--text-secondary);}

/* Usecase Grid */
.usecase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.2rem;}
.usecase-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:transform .2s;}
.usecase-card:hover{transform:translateY(-2px);}
.usecase-card h3{font-size:1rem;color:var(--primary);margin-bottom:.4rem;}
.usecase-card p{font-size:.85rem;color:var(--text-secondary);}

/* Feedback */
.feedback-form{max-width:600px;margin:0 auto;display:flex;flex-direction:column;gap:1rem;}
.form-row{display:flex;flex-direction:column;gap:.8rem;}
.feedback-form select,.feedback-form textarea{padding:.6rem .8rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text);font-size:.9rem;font-family:var(--font);}
.feedback-form select:focus,.feedback-form textarea:focus{outline:none;border-color:var(--primary);}
.feedback-form .btn-primary{align-self:center;}

/* Ad Space */
.ad-space{max-width:1100px;margin:1rem auto;padding:0.8rem;background:var(--bg-card);text-align:center;border-radius:8px;color:var(--text-muted);font-size:0.78rem;min-height:60px;display:flex;align-items:center;justify-content:center;}

/* Footer */
.footer{background:var(--bg-card);border-top:1px solid var(--border);padding:2rem 1.5rem;text-align:center;}
.footer-inner{max-width:1000px;margin:0 auto;}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:1rem;}
.footer-links a{font-size:.83rem;color:var(--text-secondary);text-decoration:none;transition:color .2s;}
.footer-links a:hover{color:var(--primary);}
.footer-copy{font-size:.78rem;color:var(--text-muted);margin-bottom:.3rem;}
.footer-note{font-size:.72rem;color:var(--text-muted);}

/* Score Colors */
.score-excellent{color:var(--success) !important;}
.score-good{color:var(--info) !important;}
.score-average{color:var(--warning) !important;}
.score-poor{color:var(--error) !important;}

/* Responsive */
@media(max-width:900px){
  .tool-container{grid-template-columns:1fr;min-height:auto;}
  .textarea-wrapper textarea{min-height:250px;}
  .stats-dashboard{grid-template-columns:repeat(3,1fr);}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;gap:1.5rem;}
}
@media(max-width:600px){
  .header-inner{padding:.5rem 1rem;}
  .main-tool{padding:1rem;}
  .stats-dashboard{grid-template-columns:repeat(2,1fr);}
  .feature-grid{grid-template-columns:1fr;}
  .usecase-grid{grid-template-columns:1fr;}
  .input-header{flex-direction:column;align-items:flex-start;}
  .seo-input{flex-direction:column;align-items:flex-start;}
  .tab{padding:.5rem .6rem;font-size:.78rem;}
}

/* Animations */
@keyframes fadeIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.issue-item{animation:fadeIn .3s ease-out;}

/* Skip to Content */
.skip-to-content{position:absolute;top:-100%;left:0;background:var(--accent,#4a6cf7);color:#fff;padding:8px 16px;z-index:10000;font-size:.9rem;border-radius:0 0 4px 0;transition:top .2s}.skip-to-content:focus{top:0}