.main-card{max-width:800px;width:calc(100% - 40px);margin:40px auto;background:#fff;border-radius:24px;border:none;box-shadow:0 10px 40px #00000014,0 2px 8px #0000000a;padding:40px 48px;position:relative;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}.main-card:hover{transform:translateY(-2px);box-shadow:0 12px 48px #0000001f,0 4px 12px #0000000f}.card-title{font-size:32px;font-weight:700;color:var(--text-primary);margin-bottom:16px;display:flex;align-items:center;gap:14px;letter-spacing:-.5px}.card-title-icon{width:36px;height:36px;color:var(--primary-color);flex-shrink:0}.card-date{font-size:15px;color:#94a3b8;margin-bottom:36px;font-weight:400;letter-spacing:.3px}.text-input{width:100%;min-height:320px;flex:1;padding:24px;border:2px solid #E2E8F0;border-radius:16px;font-size:16px;font-family:inherit;color:#1e293b;background:#fafbfc;resize:vertical;outline:none;transition:all .3s ease;line-height:1.7;letter-spacing:.2px}.text-input:focus{border-color:var(--primary-color);background:#fff;box-shadow:0 0 0 4px var(--focus-shadow)}.text-input::placeholder{color:#94a3b8;font-weight:400}.save-button{margin-top:32px;width:100%;padding:18px 24px;background:linear-gradient(135deg,var(--button-bg) 0%,var(--primary-dark) 100%);color:var(--button-text);border:none;border-radius:14px;font-size:17px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .3s ease;box-shadow:0 4px 16px var(--shadow);letter-spacing:.3px}.save-button:hover{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--button-bg) 100%);transform:translateY(-2px);box-shadow:0 6px 20px var(--shadow)}.save-button:active{transform:translateY(0);box-shadow:0 2px 8px var(--shadow)}.save-button:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}.icon-button{width:52px;height:52px;border-radius:50%;background:#fffffff2;border:1px solid rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 4px 16px #0000001a}.icon-button:hover{background:#fff;transform:scale(1.08) translateY(-2px);box-shadow:0 6px 20px #00000026}.icon-button:active{transform:scale(1)}.icon-button svg{width:24px;height:24px;color:var(--primary-color);transition:transform .3s ease}.icon-button:hover svg{transform:scale(1.1)}.theme-toggle-button{font-size:24px;font-weight:600;color:var(--primary-color);display:flex;align-items:center;justify-content:center}.theme-symbol{display:inline-block;transition:transform .3s ease;line-height:1}.theme-toggle-button:hover .theme-symbol{transform:scale(1.15)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .3s}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--card-bg);border-radius:20px;border:1px solid var(--card-border);box-shadow:0 8px 32px var(--shadow);max-width:600px;width:90%;max-height:80vh;overflow-y:auto;padding:30px;position:relative;animation:slideUp .3s}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.modal-title{font-size:24px;font-weight:600;color:var(--text-primary)}.close-button{width:32px;height:32px;border:none;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background .3s;color:var(--text-primary)}.close-button:hover{background:#0000000d}.form-group{margin-bottom:20px}.form-label{display:block;font-size:14px;color:var(--text-primary);margin-bottom:8px;font-weight:500}.form-input{width:100%;padding:12px;border:1px solid var(--input-border);border-radius:8px;font-size:14px;font-family:inherit;color:var(--text-primary);background:#fff;outline:none;transition:border-color .3s}.form-input:focus{border-color:var(--primary-color)}.form-button{padding:10px 20px;background:var(--button-bg);color:var(--button-text);border:1px solid var(--primary-dark);border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .3s}.form-button:hover{background:var(--primary-dark)}.form-button-secondary{background:transparent;color:var(--text-primary);border:1px solid var(--input-border)}.form-button-secondary:hover{background:#0000000d}.email-list{margin-top:20px}.email-item{display:flex;justify-content:space-between;align-items:center;padding:12px;background:#fff;border:1px solid var(--input-border);border-radius:8px;margin-bottom:10px}.email-item-info{flex:1}.email-item-email{font-size:14px;color:var(--text-primary);font-weight:500}.delete-button{padding:6px 12px;background:#ff5252;color:#fff;border:none;border-radius:6px;font-size:12px;cursor:pointer;transition:background .3s}.delete-button:hover{background:#d32f2f}.history-list{margin-bottom:20px}.history-item{padding:20px;background:#fff;border:1px solid var(--input-border);border-radius:12px;margin-bottom:16px;transition:all .3s ease}.history-item:hover{box-shadow:0 2px 8px #0000000d}.history-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.history-date{font-size:14px;color:var(--text-secondary);font-weight:500}.history-delete-button{padding:6px 10px;background:transparent;border:1px solid #E2E8F0;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#94a3b8;transition:all .3s ease}.history-delete-button:hover{background:#fee2e2;border-color:#fca5a5;color:#dc2626;transform:scale(1.05)}.history-delete-button:active{transform:scale(.95)}.history-content{font-size:15px;color:var(--text-primary);line-height:1.6;white-space:pre-wrap;word-break:break-word}.toast{position:fixed;top:20px;left:50%;transform:translate(-50%);background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:16px 24px;box-shadow:0 4px 16px var(--shadow);z-index:2000;animation:slideDown .3s;max-width:90%;text-align:center}@keyframes slideDown{0%{transform:translate(-50%) translateY(-20px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.toast-message{font-size:15px;color:var(--text-primary)}.theme-toggle{position:fixed;top:20px;left:20px;z-index:100}.top-right-button{position:fixed;top:20px;right:20px;z-index:100}.bottom-right-button{position:fixed;bottom:20px;right:20px;z-index:100}@media (max-width: 768px){.app-container{padding:20px 16px 16px}.main-card{padding:32px 24px;margin:20px 0;border-radius:20px;max-width:100%}.card-title{font-size:26px;gap:10px;margin-bottom:12px}.card-title-icon{width:28px;height:28px}.card-date{font-size:14px;margin-bottom:28px}.text-input{min-height:280px;padding:20px;font-size:15px;border-radius:14px}.save-button{padding:16px 20px;font-size:16px;margin-top:28px;border-radius:12px}.modal-content{padding:24px 20px;max-width:95%;margin:20px}.theme-toggle,.top-right-button,.bottom-right-button{position:fixed}.theme-toggle{top:12px;left:12px}.top-right-button{top:12px;right:12px}.bottom-right-button{bottom:12px;right:12px}.icon-button{width:48px;height:48px}.icon-button svg{width:22px;height:22px}}@media (max-width: 480px){.main-card{padding:24px 20px;border-radius:18px}.card-title{font-size:24px}.text-input{min-height:240px;padding:16px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;overflow-x:hidden}#root{min-height:100vh;width:100%}:root{--bg-gradient-start: #E3F2FD;--bg-gradient-end: #BBDEFB;--card-bg: #F5F9FF;--card-border: #BBDEFB;--primary-color: #2196F3;--primary-dark: #1976D2;--text-primary: #1565C0;--text-secondary: #90CAF9;--button-bg: #2196F3;--button-text: #FFFFFF;--input-border: #BBDEFB;--shadow: rgba(33, 150, 243, .1)}.theme-blue{--bg-gradient-start: #E3F2FD;--bg-gradient-end: #BBDEFB;--card-bg: #F5F9FF;--card-border: #BBDEFB;--primary-color: #2196F3;--primary-dark: #1976D2;--text-primary: #1565C0;--text-secondary: #90CAF9;--button-bg: #2196F3;--button-text: #FFFFFF;--input-border: #BBDEFB;--shadow: rgba(33, 150, 243, .15);--focus-shadow: rgba(33, 150, 243, .08)}.theme-pink{--bg-gradient-start: #FCE4EC;--bg-gradient-end: #F8BBD0;--card-bg: #FFF5F8;--card-border: #F8BBD0;--primary-color: #F48FB1;--primary-dark: #E91E63;--text-primary: #C2185B;--text-secondary: #F8BBD0;--button-bg: #F48FB1;--button-text: #FFFFFF;--input-border: #F8BBD0;--shadow: rgba(244, 143, 177, .15);--focus-shadow: rgba(244, 143, 177, .08)}.app-container{min-height:100vh;background:linear-gradient(135deg,var(--bg-gradient-start) 0%,var(--bg-gradient-end) 100%);background-attachment:fixed;padding:40px 20px 20px;position:relative;display:flex;align-items:flex-start;justify-content:center}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--primary-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}