:root{--tool-accent: #0f0f0f;--tool-accent-hover: #333;--tool-bg: #ffffff;--tool-bg-off: #f8f9fa;--tool-bg-secondary: #f3f4f6;--tool-bg-tertiary: #e5e7eb;--tool-text: #1f2937;--tool-text-muted: #6b7280;--tool-text-faint: #9ca3af;--tool-border: #e5e7eb;--tool-border-dark: #d1d5db;--tool-danger: #ef4444;--tool-success: #22c55e;--tool-info: #3b82f6}html.theme-dark{--tool-bg: #0a0a0a;--tool-bg-off: #111111;--tool-bg-secondary: #1a1a1a;--tool-bg-tertiary: #222222;--tool-text: #e0e0e0;--tool-text-muted: #9ca3af;--tool-text-faint: #6b7280;--tool-border: #272727;--tool-border-dark: #333333}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Anek Devanagari,sans-serif;background:var(--tool-bg);color:var(--tool-text);min-height:100vh;font-size:14px}.csv-main{width:100%;max-width:1600px;margin:0 auto;padding:20px 16px 60px}.drop-zone{border:2px dashed var(--tool-border-dark);border-radius:10px;padding:48px 24px;text-align:center;cursor:pointer;transition:all .15s 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8px;border-radius:10px;font-size:10px;font-weight:600;text-transform:uppercase}.type-string{background:#e0f2fe;color:#0369a1}.type-number{background:#dcfce7;color:#15803d}.type-date{background:#fef3c7;color:#92400e}html.theme-dark .type-string{background:#0c2a3d;color:#7dd3fc}html.theme-dark .type-number{background:#052e16;color:#86efac}html.theme-dark .type-date{background:#2d1f00;color:#fcd34d}.history-controls{display:flex;gap:4px}#toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--tool-text);color:var(--tool-bg);padding:10px 20px;border-radius:20px;font-size:13px;font-weight:500;z-index:3000;animation:fadeIn .2s ease;white-space:nowrap}@keyframes fadeIn{0%{opacity:0;transform:translate(-50%) translateY(8px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.page-intro{margin-bottom:28px}.page-intro h1{font-size:24px;font-weight:700;color:var(--tool-text);margin-bottom:6px}.page-intro 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var(--tool-border)}.faq-a.open{display:block}.hidden{display:none!important}.empty-state{text-align:center;padding:40px;color:var(--tool-text-muted);font-size:13px}@media(max-width:640px){.toolbar-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.action-bar{flex-direction:column;align-items:flex-start}}