:root{--primary: #2e3fb1;--primary-dark: #2530b4;--bg-app: #f1f5f9;--bg-sidebar: #ffffff;--border-color: #e2e8f0;--text-main: #1e293b;--text-muted: #64748b;--sidebar-width: 400px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif}.main .app-container{height:auto;min-height:70vh;border-radius:8px;overflow:hidden;display:grid;grid-template-columns:var(--sidebar-width) 1fr}.main .editor-sidebar{height:auto;min-height:70vh}.editor-sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;overflow:hidden;box-shadow:2px 0 10px #0000000d}.sidebar-header{flex-shrink:0;padding:20px;border-bottom:1px solid var(--border-color)}.sidebar-header h2{font-size:1.25rem;font-weight:700;color:var(--text-main)}.scrollable-form{flex:1;overflow-y:auto;padding:20px}.editor-section{margin-bottom:12px}.editor-section label{display:block;font-size:.8rem;margin-bottom:4px;color:var(--text-muted)}.editor-section input,.editor-section textarea,.editor-section select{width:100%;padding:8px 12px;border:1px solid var(--border-color);border-radius:6px;font-size:.9rem;font-family:inherit}.editor-section input:focus,.editor-section textarea:focus,.editor-section select:focus{outline:none;border-color:var(--primary)}.editor-section textarea{resize:vertical;min-height:100px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.full-width{grid-column:span 2}.btn{padding:8px 16px;border-radius:6px;border:none;font-weight:500;cursor:pointer;font-size:.9rem}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-success{background:#10b981;color:#fff}.preview-stage{background:#525659;display:flex;flex-direction:column;align-items:center;padding:30px;overflow-y:auto}.preview-toolbar{position:sticky;top:0;z-index:5;background:#525659e6;padding:10px 20px;border-radius:20px;margin-bottom:20px;display:flex;gap:20px;align-items:center;backdrop-filter:blur(5px)}.preview-label{color:#fff;font-size:.9rem;opacity:.8}.letter-paper{background:#fff;width:210mm;min-height:297mm;padding:20mm;box-shadow:0 4px 20px #0000004d;color:var(--text-main)}.letter-header{margin-bottom:24px}.letter-date{margin-bottom:20px;font-size:.9rem;color:var(--text-muted)}.letter-header-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}.letter-sender-block,.letter-recipient-block{font-size:.9rem;line-height:1.5}.letter-block-label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:6px}.letter-sender,.letter-recipient{white-space:pre-line;color:#334155}.letter-subject{font-weight:600;margin-bottom:16px;font-size:.95rem}.letter-body{font-size:.95rem;line-height:1.6;white-space:pre-line;margin-bottom:16px}.letter-footer{margin-top:32px;font-size:.9rem;white-space:pre-line}.letter-rodo{font-size:.65rem;color:#94a3b8;margin-top:24px;border-top:1px solid #e2e8f0;padding-top:10px}.loader-overlay{position:fixed;inset:0;background:#000c;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;z-index:9999}.loader-overlay.hidden{display:none!important}.spinner{width:40px;height:40px;border:4px solid #fff;border-top-color:var(--primary);border-radius:50%;animation:spin 1s infinite linear;margin-bottom:10px}@keyframes spin{to{transform:rotate(360deg)}}.pdf-mode{margin:0!important;width:210mm!important;min-height:297mm!important;box-shadow:none!important}@media (max-width: 1000px){.main .app-container{grid-template-columns:1fr}.editor-sidebar{border-right:none;border-bottom:1px solid var(--border-color)}.letter-paper{width:100%;padding:16px}}