:root{--background-color: #ffffff;--surface-color: #f8f9fa;--primary-color: #ee4d2d;--primary-hover-color: #d63a1f;--secondary-color: #ee4d2d;--secondary-hover-color: #d63a1f;--text-color: #333333;--subtle-text-color: #666666;--error-color: #dc3545;--border-color: #e0e0e0;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}body{margin:0;font-family:var(--font-family);background-color:var(--background-color);color:var(--text-color);min-height:100vh;box-sizing:border-box}.top-nav{background-color:var(--primary-color);color:#fff;padding:1rem 0;box-shadow:0 2px 8px #0000001a;position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;padding:0 1rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.nav-title{margin:0;font-size:1.5rem;font-weight:700}.nav-tabs{display:flex;gap:.5rem}.nav-tab{padding:.5rem 1rem;background:none;border:2px solid rgba(255,255,255,.3);color:#fff;border-radius:6px;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .2s ease-in-out}.nav-tab:hover{background-color:#ffffff1a;border-color:#ffffff80}.nav-tab.active{background-color:#fff;color:var(--primary-color);border-color:#fff}#root{width:100%;min-height:100vh}.app-container{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;display:flex;justify-content:center;align-items:center;padding:1rem}main{background-color:var(--surface-color);padding:2.5rem;border-radius:12px;box-shadow:0 4px 12px #ee4d2d26;text-align:center;border:1px solid var(--border-color);max-width:600px;width:100%}h1{font-size:2.5em;margin-top:0;margin-bottom:.5rem;font-weight:700}.subtitle{color:var(--subtle-text-color);margin-top:0;margin-bottom:2rem}form{display:flex;flex-direction:column;gap:1rem}input[type=url]{padding:.8rem 1rem;font-size:1rem;border-radius:8px;border:2px solid var(--border-color);background-color:var(--background-color);color:var(--text-color);width:100%;box-sizing:border-box;transition:border-color .2s,box-shadow .2s}input[type=url]:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #ee4d2d40}button{padding:.8rem 1.5rem;font-size:1.1rem;font-weight:700;cursor:pointer;border-radius:8px;border:none;background-color:var(--primary-color);color:#fff;transition:background-color .2s ease-in-out}button:hover:not(:disabled){background-color:var(--primary-hover-color)}button:disabled{background-color:#ccc;cursor:not-allowed;opacity:.7}.error{color:var(--error-color);background-color:#dc35451a;padding:.75rem;border-radius:8px;margin-top:1rem;border:1px solid var(--error-color)}.result{margin-top:2rem;padding:1.5rem;background-color:var(--background-color);border-radius:8px;border:1px solid var(--border-color);text-align:left}.result p{margin:0 0 .75rem;font-weight:700;color:var(--subtle-text-color)}.short-url-container{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;background-color:var(--surface-color);padding:.75rem 1rem;border-radius:8px;margin-bottom:1rem}.share-section{text-align:center}.share-title{margin:0 0 .75rem;font-weight:700;color:var(--subtle-text-color);font-size:.9rem}.social-share-buttons{display:flex;justify-content:center;gap:.5rem;flex-wrap:wrap}.social-btn{padding:.5rem;font-size:1.2rem;font-weight:700;cursor:pointer;border-radius:6px;border:none;background:none;color:inherit;transition:all .2s ease-in-out;min-width:50px;height:50px;display:flex;align-items:center;justify-content:center}.social-btn .icon{width:32px;height:32px}.social-btn:hover{transform:scale(1.1)}.general-share-btn{background:none;color:inherit}.general-share-btn:hover{transform:scale(1.1)}.short-url-container a{color:var(--secondary-color);text-decoration:none;font-weight:700;font-size:1.1rem;overflow-wrap:break-word;word-break:break-all}.short-url-container a:hover{text-decoration:underline}.short-url-container button{padding:.6rem 1rem;font-size:.9rem;background-color:var(--secondary-color)}.short-url-container button:hover:not(:disabled){background-color:var(--secondary-hover-color)}.preview-placeholder,.analytics-placeholder{padding:2rem;background-color:var(--background-color);border-radius:8px;border:2px dashed var(--border-color);color:var(--subtle-text-color)}.preview-placeholder p,.analytics-placeholder p{margin:0;font-size:1.1rem}@media (max-width: 600px){.nav-container{flex-direction:column;text-align:center}.nav-tabs{justify-content:center}main{padding:1.5rem}h1{font-size:2em}}