:root{--bg-primary: #1a1a2e;--bg-secondary: #16213e;--primary-color: #4ecca3;--primary-color: #00a8cc;--text-primary: #ffffff;--text-secondary: #b0b0b0;--border-color: #2a2a40;--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif}body{margin:0;padding:0;background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}*{box-sizing:border-box}a{color:var(--primary-color);text-decoration:none}button{font-family:inherit}.header{background-color:var(--bg-secondary);color:var(--text-primary);padding:1rem 2rem;display:flex;align-items:center;gap:3rem;box-shadow:0 2px 4px #0003;position:sticky;top:0;z-index:1000;border-bottom:1px solid var(--border-color)}.header-logo{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none;letter-spacing:.5px;flex-shrink:0}.header-nav{display:flex;align-items:center;gap:2rem}.nav-link{color:var(--text-primary);text-decoration:none;font-weight:500;transition:all .3s ease;opacity:.85}.nav-link:hover,.nav-link.active{color:var(--primary-color);opacity:1}.mobile-only{display:none}.header-actions{display:flex;align-items:center;margin-left:auto}.btn-signin{background-color:transparent;border:1px solid var(--primary-color);color:var(--primary-color);padding:.5rem 1.2rem;border-radius:4px;cursor:pointer;font-weight:600;transition:all .3s ease;text-decoration:none;display:inline-block}.btn-signin:hover{background-color:var(--primary-color);color:#fff}.account-dropdown{position:relative}.account-toggle{background-color:transparent;border:1px solid var(--primary-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-weight:500;transition:all .3s ease;display:flex;align-items:center;gap:.5rem}.account-toggle:hover{background-color:var(--bg-primary);border-color:var(--primary-color)}.account-email{font-size:.9rem}.dropdown-arrow{font-size:.7rem;opacity:.7}.dropdown-menu{position:absolute;top:calc(100% + .5rem);right:0;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:4px;box-shadow:0 4px 12px #0000004d;min-width:220px;z-index:1001;animation:dropdownFadeIn .2s ease}@keyframes dropdownFadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dropdown-email{padding:.75rem 1rem;border-bottom:1px solid var(--border-color);font-size:.9rem;color:var(--text-secondary)}.dropdown-signout{width:100%;background:none;border:none;padding:.75rem 1rem;text-align:left;color:var(--text-primary);cursor:pointer;transition:all .2s ease;font-weight:500}.dropdown-signout:hover{background-color:var(--bg-primary);color:var(--primary-color)}.mobile-account{display:none;flex-direction:column;gap:.5rem;padding:.5rem 0;border-top:1px solid var(--border-color);margin-top:.5rem}.mobile-account-email{color:var(--text-secondary);font-size:.9rem;padding:.25rem 0}.mobile-signout-btn{background-color:transparent;border:1px solid var(--primary-color);color:var(--primary-color);padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-weight:600;transition:all .3s ease}.mobile-signout-btn:hover{background-color:var(--primary-color);color:#fff}.mobile-menu-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;margin-left:auto}@media(max-width:768px){.header{padding:1rem}.mobile-menu-toggle,.mobile-only{display:block}.mobile-account{display:flex}.header-nav{position:absolute;top:100%;left:0;right:0;background-color:var(--bg-secondary);flex-direction:column;padding:1rem;gap:1rem;border-bottom:1px solid var(--border-color);transform:translateY(-20px);opacity:0;visibility:hidden;transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .3s cubic-bezier(.4,0,.2,1),visibility 0s linear .3s;z-index:999}.header-nav.open{transform:translateY(0);opacity:1;visibility:visible;transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .3s cubic-bezier(.4,0,.2,1),visibility 0s linear 0s;box-shadow:0 4px 6px #0000001a}.header-actions{display:none}.header-nav .header-actions-mobile{display:flex;flex-direction:column;width:100%;gap:1rem}}.home-container{max-width:1200px;margin:0 auto;padding:2rem;text-align:center}.hero-section{padding:4rem 1rem;background:linear-gradient(135deg,#0f34604d,#1a1a2e4d);border-radius:12px;margin-bottom:2rem;border:1px solid var(--border-color)}.hero-title{font-size:3rem;margin-bottom:1rem;color:var(--text-primary)}.hero-subtitle{font-size:1.2rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.login-signup-container{display:flex;justify-content:center;align-items:center;min-height:calc(100vh - 80px);background-color:var(--bg-primary);padding:20px}.login-signup-card{background:var(--bg-secondary);padding:2.5rem;border-radius:12px;box-shadow:0 4px 20px #0000004d;width:100%;max-width:400px;text-align:center;border:1px solid var(--border-color)}.login-signup-card h2{margin-bottom:1.5rem;color:var(--text-primary);font-size:1.8rem}.form-group{margin-bottom:1.25rem;text-align:left}.form-group label{display:block;margin-bottom:.5rem;color:var(--text-secondary);font-weight:500}.form-group input{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:6px;font-size:1rem;transition:border-color .2s;background-color:var(--bg-primary);color:var(--text-primary)}.form-group input:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #00a8cc1a}.btn-primary{width:100%;padding:.75rem;background-color:var(--primary-color);color:var(--bg-primary);border:none;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s}.btn-primary:hover{opacity:.9}.btn-primary:disabled{background-color:var(--text-secondary);cursor:not-allowed}.email-display{display:flex;justify-content:space-between;align-items:center;background-color:var(--bg-primary);padding:.75rem;border-radius:6px;margin-bottom:1.25rem;font-size:.9rem;color:var(--text-secondary);border:1px solid var(--border-color)}.btn-link{background:none;border:none;color:var(--primary-color);cursor:pointer;font-size:.9rem;padding:0;text-decoration:underline}.btn-link:hover{opacity:.8}.error-message{background-color:#c628281a;color:#ef5350;padding:.75rem;border-radius:6px;margin-bottom:1rem;font-size:.9rem;border:1px solid #ef5350}.app-container{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;width:100%}