:root{--primary:#1a73e8;--primary-dark:#1557b0;--bg:#fff;--bg-alt:#f8f9fa;--text:#202124;--text-sec:#5f6368;--border:#dadce0;--radius:8px;--shadow:0 1px 3px rgba(0,0,0,.12),0 1px 2px rgba(0,0,0,.08);--shadow-lg:0 4px 12px rgba(0,0,0,.15)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}
header{background:var(--bg);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
nav{max-width:1200px;margin:0 auto;padding:12px 20px;display:flex;justify-content:space-between;align-items:center}
.logo a{font-size:1.25rem;font-weight:700;color:var(--primary);text-decoration:none}
.nav-links a{margin-left:24px;color:var(--text-sec);text-decoration:none;font-size:.95rem}
.nav-links a:hover{color:var(--primary)}
.hero{text-align:center;padding:48px 20px 32px;background:linear-gradient(135deg,#e8f0fe 0%,#f8f9fa 100%)}
.hero h1{font-size:2.25rem;font-weight:700;margin-bottom:12px}
.hero p{font-size:1.125rem;color:var(--text-sec);max-width:600px;margin:0 auto}
.converter-section{max-width:1000px;margin:0 auto;padding:32px 20px}
.converter-container{display:flex;flex-direction:column;gap:16px}
.input-panel,.output-panel{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.panel-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--bg-alt);border-bottom:1px solid var(--border)}
.panel-header h2{font-size:.95rem;font-weight:600;color:var(--text-sec)}
.toolbar{display:flex;gap:8px;align-items:center}
.toolbar button,.convert-btn{padding:6px 12px;border:1px solid var(--border);border-radius:4px;background:var(--bg);color:var(--text-sec);cursor:pointer;font-size:.85rem;transition:all .15s}
.toolbar button:hover{background:var(--bg-alt);border-color:var(--primary);color:var(--primary)}
.v2-toggle{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--text-sec);cursor:pointer}
.v2-toggle input{cursor:pointer}
.transliteration-bar{display:flex;align-items:center;gap:12px;padding:8px 16px;border-bottom:1px solid var(--border);background:#fefefe}
.transliteration-bar .label{font-size:.85rem;color:var(--text-sec)}
.lang-buttons{display:flex;gap:4px}
.lang-btn{padding:4px 10px;border:1px solid var(--border);border-radius:4px;background:var(--bg);color:var(--text-sec);cursor:pointer;font-size:.8rem}
.lang-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.lang-btn:hover:not(.active){border-color:var(--primary)}
textarea{width:100%;padding:16px;border:none;font-size:1rem;line-height:1.6;resize:vertical;font-family:'Noto Sans Devanagari','Mangal',sans-serif;min-height:160px;outline:none}
#amsOutput{font-family:'AMS_Font','Courier New',monospace;background:#fefefe}
.convert-action{display:flex;justify-content:center}
.convert-btn{padding:12px 32px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;box-shadow:var(--shadow);transition:all .2s}
.convert-btn:hover{background:var(--primary-dark);box-shadow:var(--shadow-lg);transform:translateY(-1px)}
.suggestions{display:flex;flex-wrap:wrap;gap:6px;padding:8px 16px;min-height:0}
.suggestion-chip{padding:4px 12px;background:var(--bg-alt);border:1px solid var(--border);border-radius:16px;font-size:.9rem;cursor:pointer;transition:all .15s}
.suggestion-chip:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.notification{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(100px);background:#323232;color:#fff;padding:10px 24px;border-radius:4px;font-size:.9rem;transition:transform .3s;z-index:1000}
.notification.show{transform:translateX(-50%) translateY(0)}
.info-section{max-width:1000px;margin:0 auto;padding:48px 20px}
.info-section h2{font-size:1.75rem;margin-bottom:24px}
.info-section h3{font-size:1.125rem;margin:24px 0 12px}
.info-section p{color:var(--text-sec);margin-bottom:16px}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.step-card{background:var(--bg-alt);border-radius:var(--radius);padding:24px;border:1px solid var(--border)}
.step-number{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:12px}
.step-card h3{margin:0 0 8px;font-size:1.1rem}
.step-card p{margin:0;font-size:.95rem}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.feature-card{padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg)}
.feature-card h3{font-size:1rem;margin:0 0 8px;color:var(--primary)}
.feature-card p{margin:0;font-size:.9rem}
.comparison-table{width:100%;border-collapse:collapse;margin:16px 0}
.comparison-table th,.comparison-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}
.comparison-table th{background:var(--bg-alt);font-weight:600;font-size:.9rem}
.comparison-table td{font-size:.95rem}
footer{text-align:center;padding:32px 20px;border-top:1px solid var(--border);color:var(--text-sec);font-size:.85rem}
footer .disclaimer{margin-top:8px;font-size:.8rem;color:#999}
@media(max-width:768px){.hero h1{font-size:1.5rem}.hero p{font-size:1rem}textarea{min-height:120px}.steps-grid{grid-template-columns:1fr}.features-grid{grid-template-columns:1fr 1fr}.transliteration-bar{flex-direction:column;align-items:flex-start}}