:root{--bg-color: #ffffff;--sidebar-bg: #f9f9f9;--text-color: #1a1a1a;--border-color: #e5e5e5;--primary-color: #4f46e5;--primary-hover: #4338ca;--message-user-bg: #f3f4f6;--message-ai-bg: transparent;--input-bg: #ffffff;--modal-overlay: rgba(0, 0, 0, .5);--modal-bg: #ffffff;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-heading: "Outfit", sans-serif;--nav-bg: #f3f4f6;--nav-width: 80px}.dark-mode{--bg-color: #0d0d0d;--sidebar-bg: #171717;--text-color: #ececec;--border-color: #2d2d2d;--primary-color: #6366f1;--primary-hover: #4f46e5;--message-user-bg: #212121;--message-ai-bg: transparent;--input-bg: #1e1e1e;--modal-overlay: rgba(0, 0, 0, .7);--modal-bg: #1e1e1e;--nav-bg: #111111}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-color);height:100vh;overflow:hidden;transition:background-color .3s ease}#app{display:flex;height:100%;width:100%}.global-nav{width:var(--nav-width);background-color:var(--nav-bg);display:flex;flex-direction:column;align-items:center;padding:1.5rem 0;border-right:1px solid var(--border-color);z-index:1000}.nav-brand{margin-bottom:2rem}.brand-logo{width:40px;height:40px;background:var(--accent-gradient);border-radius:12px;display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:700;color:#fff}.nav-items{flex:1;display:flex;flex-direction:column;gap:1rem;width:100%}.nav-item{background:transparent;border:none;color:var(--text-color);display:flex;flex-direction:column;align-items:center;gap:.3rem;cursor:pointer;padding:.8rem 0;opacity:.6;transition:all .2s ease;width:100%}.nav-item:hover{opacity:1;background-color:#8080801a}.nav-item.active{opacity:1;color:var(--primary-color);border-right:3px solid var(--primary-color)}.nav-item .icon{font-size:1.5rem}.nav-item .label{font-size:.7rem;font-family:var(--font-heading)}.nav-footer{width:100%}.view-container{flex:1;position:relative;overflow:hidden}.view-section{display:none;width:100%;height:100%}.view-section.active{display:flex}#view-templates.active{flex-direction:column;overflow-y:auto;padding:3rem}#view-chat.active{flex-direction:row}.view-header{margin-bottom:3rem}.view-header h1{font-family:var(--font-heading);font-size:2.5rem;margin-bottom:.5rem}.view-header p{color:var(--text-color);opacity:.7;font-size:1.1rem}.templates-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem}.template-card{background-color:var(--sidebar-bg);border-radius:16px;overflow:hidden;border:1px solid var(--border-color);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;cursor:pointer;display:flex;flex-direction:column}.template-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px #00000026;border-color:var(--primary-color)}.template-image{width:100%;height:220px;object-fit:cover;background-color:var(--border-color)}.template-info{padding:1.5rem;flex:1;display:flex;flex-direction:column}.template-title{font-family:var(--font-heading);font-size:1.2rem;font-weight:600;margin-bottom:.8rem}.template-desc{font-size:.9rem;color:var(--text-color);opacity:.7;margin-bottom:1rem;line-height:1.5;flex:1}.template-tags{display:flex;gap:.5rem;flex-wrap:wrap}.template-tag{font-size:.75rem;padding:.3rem .8rem;border-radius:100px;background-color:var(--bg-color);border:1px solid var(--border-color);color:var(--text-color)}.sidebar{width:260px;background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);display:flex;flex-direction:column;transition:transform .3s ease}.sidebar-header{padding:1rem}.chat-list{flex:1;overflow-y:auto;padding:.5rem}.sidebar-footer{padding:1rem;border-top:1px solid var(--border-color)}.main-content{flex:1;display:flex;flex-direction:column;height:100%;position:relative}.main-header{height:60px;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color)}.header-left{display:flex;align-items:center;gap:1rem}.header-left h1{font-family:var(--font-heading);font-size:1.1rem;font-weight:600}.messages-container{flex:1;overflow-y:auto;padding:2rem 1rem;display:flex;flex-direction:column;gap:2rem;max-width:900px;margin:0 auto;width:100%}.welcome-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;opacity:.8}.welcome-screen .logo{width:64px;height:64px;background:var(--accent-gradient);border-radius:16px;display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:700;font-size:2rem;color:#fff;margin-bottom:1.5rem;box-shadow:0 10px 25px #6366f14d}.welcome-screen h2{font-family:var(--font-heading);font-size:1.8rem;margin-bottom:.5rem}.message{display:flex;flex-direction:column;max-width:85%;animation:fadeIn .3s ease}.message.user{align-self:flex-end;background-color:var(--message-user-bg);padding:.8rem 1.2rem;border-radius:18px 18px 4px}.message.ai{align-self:flex-start;padding:0;width:100%}.message-content{line-height:1.6;font-size:1rem;word-break:break-word}.main-footer{padding:1.5rem;max-width:900px;margin:0 auto;width:100%}.input-container{position:relative;background-color:var(--input-bg);border:1px solid var(--border-color);border-radius:16px;padding:.8rem;display:flex;align-items:flex-end;gap:.5rem;box-shadow:0 4px 12px #0000001a}textarea{flex:1;background:transparent;border:none;color:inherit;font-family:inherit;font-size:1rem;resize:none;max-height:200px;padding:.2rem}textarea:focus{outline:none}.footer-note{text-align:center;font-size:.75rem;opacity:.5;margin-top:.8rem}.btn{cursor:pointer;border:none;border-radius:8px;font-family:inherit;font-weight:500;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.btn-primary{background:var(--accent-gradient);color:#fff;padding:.6rem 1rem;width:100%}.btn-icon{background:transparent;color:var(--text-color);width:36px;height:36px;font-size:1.2rem}.btn-icon:hover{background-color:var(--border-color)}.btn-send{background:var(--primary-color);color:#fff;width:40px;height:40px;border-radius:10px}.btn-send:disabled{opacity:.3;cursor:not-allowed}.badge{padding:.2rem .6rem;background-color:var(--border-color);border-radius:100px;font-size:.75rem;font-weight:600}.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:var(--modal-overlay);z-index:1000;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal.active{display:flex}.modal-content{background-color:var(--modal-bg);width:90%;max-width:450px;border-radius:20px;padding:1.5rem;box-shadow:0 20px 40px #0006;border:1px solid var(--border-color)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.form-group{margin-bottom:1.2rem}.form-group label{display:block;font-size:.85rem;margin-bottom:.5rem;opacity:.8}.form-group input{width:100%;padding:.8rem;background-color:var(--sidebar-bg);border:1px solid var(--border-color);border-radius:10px;color:inherit;font-family:inherit}.form-group input:focus{outline:2px solid var(--primary-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.sidebar{position:fixed;left:-260px;z-index:900;height:100%}.sidebar.active{transform:translate(260px)}}