/* 文字数カウンター - ミニマル・クリーン */
:root{--color-primary:#4A90D9;--color-primary-dark:#3A7BC8;--color-primary-bg:#EBF2FB;--color-bg:#FAFBFD;--color-surface:#FFFFFF;--color-text:#1A1A2E;--color-text-secondary:#6B7280;--color-text-muted:#9CA3AF;--color-border:#E5E7EB;--color-divider:#F3F4F6;--color-success:#10B981;--color-warning:#F59E0B;--color-danger:#EF4444;--shadow-sm:0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 12px rgba(0,0,0,0.06);--shadow-focus:0 0 0 3px rgba(74,144,217,0.15);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--font-sans:'Inter','Noto Sans JP',-apple-system,BlinkMacSystemFont,sans-serif;--transition:0.2s ease}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.7;min-height:100vh;-webkit-font-smoothing:antialiased}
.container{max-width:700px;margin:0 auto;padding:0 20px}
.header{text-align:center;padding:48px 0 32px}
.header-icon{font-size:3rem;margin-bottom:12px;animation:float 3s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.header h1{font-size:1.75rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:8px}
.header-subtitle{font-size:0.95rem;color:var(--color-text-secondary)}
.section-title{font-size:1.1rem;font-weight:600;margin-bottom:16px}

.counter-section{background:var(--color-surface);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-md);border:1px solid var(--color-border);margin-bottom:20px}

.stats-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px}
.stat-item{background:var(--color-divider);border-radius:var(--radius-sm);padding:12px 10px;text-align:center;transition:all var(--transition)}
.stat-item.main{background:var(--color-primary-bg)}
.stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--color-primary-dark);line-height:1.2}
.stat-item.main .stat-value{font-size:2rem}
.stat-label{display:block;font-size:0.68rem;color:var(--color-text-muted);margin-top:2px}

textarea{width:100%;padding:16px;border:1.5px solid var(--color-border);border-radius:var(--radius-md);font-family:var(--font-sans);font-size:0.95rem;color:var(--color-text);line-height:1.8;resize:vertical;min-height:200px;transition:border-color var(--transition)}
textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:var(--shadow-focus)}
textarea::placeholder{color:var(--color-text-muted)}

.action-bar{display:flex;gap:8px;margin-top:12px}
.action-btn{flex:1;padding:10px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);font-family:var(--font-sans);font-size:0.85rem;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition)}
.action-btn:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-primary-bg)}

.limits-section{margin-bottom:20px}
.limits-grid{display:grid;gap:10px;margin-top:12px}
.limit-card{background:var(--color-surface);border-radius:var(--radius-md);padding:16px 20px;border:1px solid var(--color-border);box-shadow:var(--shadow-sm)}
.limit-header{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.limit-icon{font-size:1.2rem}
.limit-name{font-size:0.88rem;font-weight:600}
.limit-bar-wrap{height:6px;background:var(--color-divider);border-radius:3px;overflow:hidden;margin-bottom:6px}
.limit-bar{height:100%;border-radius:3px;transition:width 0.3s ease,background 0.3s ease;background:var(--color-primary)}
.limit-bar.warn{background:var(--color-warning)}
.limit-bar.over{background:var(--color-danger)}
.limit-text{font-size:0.75rem;color:var(--color-text-muted)}

.ad-space{margin:20px 0;min-height:60px;display:flex;align-items:center;justify-content:center}
.ad-placeholder{font-size:0.75rem;color:var(--color-text-muted);padding:16px 24px;border:1px dashed var(--color-border);border-radius:var(--radius-sm)}
.footer{padding:32px 0;text-align:center}
.footer-content{margin-top:16px}
.footer-text{font-size:0.85rem;color:var(--color-text-secondary)}
.footer-nav{margin-top:12px;display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap}
.footer-nav a{font-size:0.85rem;color:var(--color-primary);text-decoration:none}
.footer-nav a.muted{color:var(--color-text-muted)}
.nav-sep{color:var(--color-text-muted);font-size:0.8rem}
@media(max-width:600px){
  .header{padding:32px 0 24px}.header h1{font-size:1.4rem}
  .counter-section{padding:20px 16px}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stat-value{font-size:1.2rem}
  .stat-item.main .stat-value{font-size:1.5rem}
  .footer-nav{flex-direction:column;gap:6px}.nav-sep{display:none}
}