/* PromptCraft - AI Image Prompt Generator */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f5f6fa;--surface:#fff;--text:#1a1a2e;--text-sub:#555;
  --border:#e0e0e0;--accent:#6c5ce7;--accent2:#a29bfe;
  --chip-bg:#eee;--chip-active:#6c5ce7;--chip-text:#333;--chip-active-text:#fff;
  --neg-bg:#fff3e0;--neg-border:#ff9800;
  --score-bg:#e8f5e9;--score-fill:#4caf50;
  --card-shadow:0 2px 8px rgba(0,0,0,.06);
  --radius:10px;
}
[data-theme="dark"]{
  --bg:#0f0f23;--surface:#1a1a2e;--text:#e0e0e0;--text-sub:#aaa;
  --border:#2a2a3e;--accent:#a29bfe;--accent2:#6c5ce7;
  --chip-bg:#2a2a3e;--chip-active:#a29bfe;--chip-text:#ccc;--chip-active-text:#0f0f23;
  --neg-bg:#2a1f00;--neg-border:#ff9800;
  --score-bg:#1a2e1a;--score-fill:#66bb6a;
  --card-shadow:0 2px 8px rgba(0,0,0,.3);
}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans JP',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
a{color:var(--accent)}

/* Header */
.header{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 0;position:sticky;top:0;z-index:100}
.header-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.logo{font-size:1.3rem;font-weight:700;color:var(--accent)}
.logo-icon{margin-right:4px}
.tagline{font-size:0.82rem;color:var(--text-sub);margin-top:2px}
.header-right{display:flex;align-items:center;gap:12px}
.usage-badge{font-size:0.8rem;background:var(--chip-bg);padding:4px 10px;border-radius:20px;color:var(--text-sub)}
.usage-badge strong{color:var(--accent)}
.theme-toggle{background:none;border:1px solid var(--border);width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1.1rem;color:var(--text);display:flex;align-items:center;justify-content:center}

/* Model Bar */
.model-bar{max-width:1200px;margin:16px auto 0;padding:0 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.model-label{font-size:0.85rem;font-weight:600;color:var(--text-sub)}
.model-tabs{display:flex;gap:6px;flex-wrap:wrap}
.model-tab{padding:6px 16px;border:2px solid var(--border);border-radius:20px;background:var(--surface);color:var(--text-sub);cursor:pointer;font-size:0.82rem;font-weight:600;transition:all .2s}
.model-tab:hover{border-color:var(--accent);color:var(--accent)}
.model-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Main Layout */
.main-tool{max-width:1200px;margin:16px auto;padding:0 20px}
.tool-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:16px}

/* Category Panel */
.categories-panel{display:flex;flex-direction:column;gap:16px}
.cat-section{background:var(--surface);border-radius:var(--radius);padding:14px;border:1px solid var(--border)}
.cat-title{font-size:0.9rem;font-weight:700;margin-bottom:8px;color:var(--text);display:flex;align-items:center;gap:6px}
.chip-grid{display:flex;flex-wrap:wrap;gap:6px}
.chip{padding:5px 12px;border-radius:16px;background:var(--chip-bg);color:var(--chip-text);font-size:0.78rem;cursor:pointer;border:1px solid transparent;transition:all .15s;user-select:none}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.active{background:var(--chip-active);color:var(--chip-active-text);border-color:var(--chip-active)}

/* Custom Input */
.custom-input-wrap{background:var(--surface);border-radius:var(--radius);padding:14px;border:1px solid var(--border)}
.custom-input{width:100%;padding:10px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:0.85rem;resize:vertical;font-family:inherit}
.custom-input:focus{outline:none;border-color:var(--accent)}

/* Model Params */
.mj-params,.sd-params{background:var(--surface);border-radius:var(--radius);padding:14px;border:1px solid var(--border)}
.param-row{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:0.82rem}
.param-row label{min-width:100px;color:var(--text-sub);font-weight:500}
.param-row select,.param-row input[type="range"]{flex:1}
.param-row select{padding:4px 8px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text);font-size:0.82rem}
.param-row input[type="range"]{accent-color:var(--accent)}
.hidden{display:none!important}

/* Output Panel */
.output-panel{display:flex;flex-direction:column;gap:16px;position:sticky;top:70px;align-self:start;max-height:calc(100vh - 90px);overflow-y:auto}
.output-section{background:var(--surface);border-radius:var(--radius);padding:16px;border:1px solid var(--border)}
.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;flex-wrap:wrap;gap:8px}
.output-header h2{font-size:0.95rem;font-weight:700}
.output-actions{display:flex;gap:6px}
.prompt-output{min-height:80px;padding:12px;background:var(--bg);border-radius:8px;border:1px solid var(--border);font-size:0.85rem;line-height:1.7;word-break:break-word;white-space:pre-wrap}
.prompt-output.neg{background:var(--neg-bg);border-color:var(--neg-border);min-height:50px}
.placeholder-text{color:var(--text-sub);font-style:italic;font-size:0.82rem}
.output-footer{display:flex;gap:8px;margin-top:10px}

/* Buttons */
.btn{padding:7px 16px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:0.82rem;font-weight:600;transition:all .15s}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent2);border-color:var(--accent2)}
.btn-sm{padding:4px 10px;font-size:0.78rem}

/* Score */
.score-section{background:var(--score-bg);border-radius:var(--radius);padding:14px;border:1px solid var(--border)}
.score-section h3{font-size:0.9rem;margin-bottom:8px}
.score-bar{height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin-bottom:8px}
.score-fill{height:100%;background:var(--score-fill);border-radius:4px;transition:width .3s}
.score-text{font-size:0.85rem;font-weight:700;margin-bottom:6px}
.score-tips{padding-left:18px;font-size:0.78rem;color:var(--text-sub)}
.score-tips li{margin-bottom:4px}

/* Toggle */
.toggle-label{font-size:0.78rem;color:var(--text-sub);display:flex;align-items:center;gap:4px;cursor:pointer}

/* History */
.history-section{background:var(--surface);border-radius:var(--radius);padding:14px;border:1px solid var(--border)}
.history-list{max-height:200px;overflow-y:auto}
.history-item{padding:8px;border-bottom:1px solid var(--border);font-size:0.78rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:8px}
.history-item:hover{background:var(--chip-bg)}
.history-item .hist-text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.history-item .hist-model{font-size:0.7rem;color:var(--text-sub);background:var(--chip-bg);padding:2px 6px;border-radius:4px;white-space:nowrap}
.history-item .hist-del{color:#e74c3c;cursor:pointer;font-weight:700;font-size:0.9rem;padding:0 4px}

/* Toast */
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:10px 24px;border-radius:8px;font-size:0.85rem;z-index:9998;box-shadow:0 4px 12px rgba(0,0,0,.2);transition:opacity .3s}

/* Ad Space */
.ad-space{max-width:1200px;margin:8px auto;padding:0 20px;min-height:10px}

/* LP Sections */
.lp-section{padding:48px 20px;background:var(--surface)}
.lp-section.alt{background:var(--bg)}
.lp-inner{max-width:1000px;margin:0 auto}
.lp-title{font-size:1.4rem;text-align:center;margin-bottom:32px;font-weight:700}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{background:var(--bg);border-radius:var(--radius);padding:24px;text-align:center;border:1px solid var(--border)}
.feature-icon{font-size:2rem;margin-bottom:12px}
.feature-card h3{font-size:0.95rem;margin-bottom:8px}
.feature-card p{font-size:0.82rem;color:var(--text-sub);line-height:1.6}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{text-align:center;padding:20px}
.step-num{width:48px;height:48px;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;margin:0 auto 12px}
.step-card h3{font-size:0.95rem;margin-bottom:8px}
.step-card p{font-size:0.82rem;color:var(--text-sub)}

/* FAQ */
.faq-list{max-width:700px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:8px;overflow:hidden}
.faq-item summary{padding:14px 16px;cursor:pointer;font-weight:600;font-size:0.9rem;background:var(--surface);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+ ";color:var(--accent);font-weight:700}
.faq-item[open] summary::before{content:"- "}
.faq-item p{padding:0 16px 14px;font-size:0.85rem;color:var(--text-sub);line-height:1.7}

/* Footer */
.footer{text-align:center;padding:24px 20px;color:var(--text-sub);font-size:0.8rem;border-top:1px solid var(--border)}

/* Responsive */
@media(max-width:768px){
  .tool-layout{grid-template-columns:1fr}
  .output-panel{position:static;max-height:none}
  .feature-grid,.steps-grid{grid-template-columns:1fr}
  .header-inner{flex-direction:column;align-items:flex-start}
  .model-bar{flex-direction:column;align-items:flex-start}
  .param-row{flex-direction:column;align-items:flex-start;gap:4px}
  .param-row label{min-width:auto}
}

/* 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}