:root{--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-card:#f8fafc;--text-primary:#374151;--text-secondary:#64748b;--border-color:#e2e8f0;--border-hover:#cbd5e0;--shadow:0 1px 3px rgba(0,0,0,.1);--input-bg:#fff;--button-bg:#f1f5f9;--button-text:#64748b;--success-bg:#f0fdf4;--success-border:#10b981;--success-text:#065f46;--error-bg:#fef2f2;--error-border:#ef4444;--error-text:#991b1b;--blue-primary:#3b82f6;--blue-hover:#2563eb;--green-primary:#10b981}[data-theme=dark]{--bg-primary:#1a1a1a;--bg-secondary:#2d2d2d;--bg-card:#2d2d2d;--text-primary:#e5e7eb;--text-secondary:#9ca3af;--border-color:#404040;--border-hover:#525252;--shadow:0 1px 3px rgba(0,0,0,.3);--input-bg:#1a1a1a;--button-bg:#404040;--button-text:#d1d5db;--success-bg:#064e3b;--success-border:#10b981;--success-text:#6ee7b7;--error-bg:#7f1d1d;--error-border:#ef4444;--error-text:#fca5a5;--blue-primary:#3b82f6;--blue-hover:#60a5fa;--green-primary:#10b981}*{box-sizing:border-box}*,body,html{margin:0;padding:0}body,html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background:var(--bg-primary);min-height:100vh;transition:background-color .3s ease}a{color:inherit;text-decoration:none}.top-bar{width:100%;height:4px;background:#2d3748}.header-section{width:100%;background:var(--bg-primary);border-bottom:1px solid var(--border-color);padding:20px 0;transition:background-color .3s ease,border-color .3s ease}.header-content{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center}.header-title{font-size:18px;font-weight:600;color:var(--text-primary);transition:color .3s ease}.header-controls{display:flex;align-items:center;gap:12px}.header-language-selector{position:relative}.header-language-dropdown{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;padding:8px 12px;font-size:14px;font-weight:500;color:var(--text-primary);cursor:pointer;transition:all .3s ease;outline:none}.header-language-dropdown:hover{border-color:var(--border-hover)}.theme-toggle{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;padding:8px;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;width:36px;height:36px}.theme-toggle:hover{border-color:var(--border-hover);background:var(--button-bg)}.theme-toggle svg{width:18px;height:18px;fill:var(--text-primary);transition:fill .3s ease}.header-separator{width:100%;height:1px;background:var(--border-color);transition:background-color .3s ease}.main-content-area{min-height:calc(100vh - 120px);padding:40px 20px;background:var(--bg-primary);display:flex;justify-content:center;align-items:flex-start;transition:background-color .3s ease}.content-card{background:var(--bg-card);border-radius:8px;padding:40px;max-width:800px;width:100%;box-shadow:var(--shadow);position:relative;transition:background-color .3s ease,box-shadow .3s ease}.content-title{text-align:center;font-size:32px;font-weight:700;color:var(--text-primary);margin-bottom:30px;letter-spacing:-.5px;transition:color .3s ease}.action-buttons{gap:0;margin-bottom:30px}.action-button,.action-buttons{display:flex;justify-content:center}.action-button{padding:12px 24px;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:all .3s ease;align-items:center;gap:8px;margin-right:10px}.encrypt-button{background:var(--button-bg);color:var(--button-text);border:1px solid var(--border-color);transition:all .3s ease}.encrypt-button.active{background:var(--blue-primary);color:#fff;border:1px solid var(--blue-primary)}.decrypt-button{background:var(--button-bg);color:var(--button-text);border:1px solid var(--border-color);transition:all .3s ease}.decrypt-button.active{background:var(--green-primary);color:#fff;border:1px solid var(--green-primary)}.action-button:hover{transform:none;box-shadow:none}.input-section{margin:25px 0}.text-input{width:100%;min-height:120px;padding:16px;border:1px solid var(--border-color);border-radius:8px;font-size:16px;line-height:1.5;resize:vertical;margin-bottom:16px;transition:all .3s ease;background:var(--input-bg);color:var(--text-primary)}.text-input:focus{outline:none;border-color:var(--blue-primary);box-shadow:0 0 0 2px rgba(59,130,246,.1)}.password-input{width:100%;padding:14px 16px;border:1px solid var(--border-color);border-radius:8px;font-size:16px;transition:all .3s ease;background:var(--input-bg);color:var(--text-primary)}.password-input:focus{outline:none;border-color:var(--blue-primary);box-shadow:0 0 0 2px rgba(59,130,246,.1)}.mode-section{margin:25px 0}.mode-label{font-weight:500;color:var(--text-primary);margin-bottom:15px;font-size:16px;display:flex;align-items:center;gap:8px;transition:color .3s ease}.mode-label:before{content:"⚠️";font-size:16px}.mode-grid{display:grid;grid-template-columns:repeat(5,1fr);grid-gap:12px;gap:12px}.mode-option{padding:12px 8px;border:1px solid var(--border-color);border-radius:8px;text-align:center;cursor:pointer;transition:all .3s ease;background:var(--input-bg);color:var(--text-primary)}.mode-option.active,.mode-option:hover{border-color:var(--blue-primary)}.mode-option.active{background:var(--blue-primary);color:#fff}.mode-emoji{font-size:20px;margin-bottom:6px}.mode-text{font-size:12px;font-weight:500;color:inherit}.decrypt-info{margin:25px 0}.auto-decrypt-notice{background:var(--success-bg);border:1px solid var(--success-border);border-radius:8px;padding:16px;text-align:center;color:var(--success-text);font-weight:500;font-size:14px;transition:all .3s ease}.decrypt-description{margin:8px 0 0;font-size:13px;opacity:.8}.execute-button-container{text-align:center;margin:25px 0}.execute-button{background:var(--button-bg);color:var(--button-text);border:1px solid var(--border-color);padding:14px 32px;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:8px;min-width:160px;justify-content:center}.execute-button:hover{transform:none;box-shadow:none}.execute-button:disabled{opacity:.6;cursor:not-allowed}.encrypt-execute{background:var(--blue-primary);color:#fff;border:1px solid var(--blue-primary)}.decrypt-execute{background:var(--green-primary);color:#fff;border:1px solid var(--green-primary)}.message{padding:12px 16px;border-radius:8px;margin:15px 0;text-align:center;font-weight:500;font-size:14px}.message.success{background:var(--success-bg);color:var(--success-text);border:1px solid var(--success-border);transition:all .3s ease}.message.error{background:var(--error-bg);color:var(--error-text);border:1px solid var(--error-border);transition:all .3s ease}.output-section{margin:25px 0 0}.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.output-label{font-weight:500;color:var(--text-primary);font-size:16px;transition:color .3s ease}.copy-button{background:var(--blue-primary);color:#fff;border:none;padding:8px 16px;border-radius:6px;font-size:14px;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:6px}.copy-button:hover{background:var(--blue-hover)}.output-area{width:100%;min-height:120px;padding:16px;border:1px solid var(--border-color);border-radius:8px;background:var(--input-bg);font-family:monospace;font-size:14px;line-height:1.5;color:var(--text-secondary);word-break:break-all;overflow-wrap:break-word;transition:all .3s ease}.output-area.has-content{background:var(--input-bg);border-color:var(--green-primary);color:var(--text-primary)}@media (max-width:1024px) and (min-width:769px){.content-card{padding:30px;max-width:90%}.content-title{font-size:28px}.mode-grid{grid-template-columns:repeat(4,1fr);gap:10px}}@media (max-width:768px){.header-content{padding:0 15px}.main-content-area{padding:20px 15px}.content-card{padding:25px;margin:0;max-width:none}.content-title{font-size:28px;margin-bottom:25px}.header-title{font-size:16px}.header-language-dropdown{font-size:12px;padding:6px 10px}.theme-toggle{width:32px;height:32px}.theme-toggle svg{width:16px;height:16px}.mode-grid{grid-template-columns:repeat(3,1fr);gap:8px}.mode-option{padding:10px 6px}.mode-emoji{font-size:18px}.mode-text{font-size:11px}.action-buttons{flex-direction:column;gap:10px}.action-button{margin-right:0;width:100%}.text-input{min-height:100px}.password-input,.text-input{font-size:16px}.execute-button{width:100%;min-width:auto}}@media (max-width:480px){.header-content{padding:0 10px}.main-content-area{padding:15px 10px}.content-card{padding:20px}.content-title{font-size:24px;margin-bottom:20px}.header-title{font-size:14px}.header-language-dropdown{font-size:11px;padding:5px 8px}.theme-toggle{width:28px;height:28px}.theme-toggle svg{width:14px;height:14px}.mode-grid{grid-template-columns:repeat(2,1fr);gap:6px}.mode-option{padding:8px 4px}.mode-emoji{font-size:16px}.mode-text{font-size:10px}.text-input{min-height:80px}.password-input,.text-input{padding:12px}.execute-button{padding:12px 24px;font-size:14px}}.content-card{animation:none}.action-button:hover,.execute-button:hover{transform:none;box-shadow:none}