:root{--primary: #0d9488;--primary-hover: #0f766e;--primary-light: #ccfbf1;--danger: #dc2626;--danger-hover: #b91c1c;--bg: #f3f4f6;--bg-white: #ffffff;--text: #111827;--text-secondary: #6b7280;--text-muted: #9ca3af;--border: #e5e7eb;--border-focus: #0d9488;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--radius: .5rem;--radius-lg: .5rem}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}.navbar{background:var(--bg-white);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:50;height:60px;display:flex;align-items:center}.navbar-inner{max-width:1320px;margin:0 auto;padding:0 1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%}.navbar-brand{display:flex;align-items:center;gap:.75rem}.navbar-brand h1{font-size:1.25rem;font-weight:700;color:var(--text)}.navbar-brand .subtitle{font-size:.8rem;color:var(--text-muted);display:none}@media(min-width:768px){.navbar-brand .subtitle{display:inline}}.nav-links{display:flex;align-items:center;gap:1rem}.nav-auth{display:flex;align-items:center;gap:.75rem}.nav-user{font-size:.875rem;color:var(--text-secondary)}.container{max-width:1320px;margin:0 auto;padding:2rem 1rem}.section{margin-bottom:2rem}.section-box{background:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.5rem}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.section-header h2{font-size:1.5rem;font-weight:700;color:var(--text)}.subtitle{color:var(--text-secondary);font-size:.85rem;margin-bottom:1rem}.hero{text-align:center;margin-bottom:2rem}.hero h2{font-size:1.875rem;font-weight:700;color:var(--text);margin-bottom:.5rem}.hero p{color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:500;border-radius:var(--radius);border:none;cursor:pointer;transition:background .15s,transform .1s,opacity .15s;text-decoration:none;line-height:1.5;white-space:nowrap}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-secondary{background:#e5e7eb;color:var(--text)}.btn-secondary:hover:not(:disabled){background:#d1d5db}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-secondary)}.btn-outline:hover:not(:disabled){background:var(--bg);color:var(--text)}.btn-sm,.btn-small{padding:.25rem .625rem;font-size:.8rem}.label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.input{width:100%;padding:.5rem .75rem;font-size:.875rem;border:1px solid var(--border);border-radius:var(--radius);outline:none;transition:border-color .15s,box-shadow .15s;font-family:inherit;resize:vertical}.note-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:.5rem}.note-item{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.625rem .875rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-white)}.note-content{flex:1;font-size:.875rem;color:var(--text-secondary)}.note-actions{display:flex;gap:.5rem}.loading,.empty{color:var(--text-muted);font-size:.9rem}.error{color:#f87171;background:#f871711a;padding:.5rem .75rem;border-radius:var(--radius);margin-bottom:.75rem;font-size:.85rem}.sign-in-prompt{text-align:center;padding:2rem}.sign-in-prompt p{color:var(--text-secondary);margin-bottom:1rem}.footer{text-align:center;padding:2rem 1rem;color:var(--text-muted);font-size:.8rem;border-top:1px solid var(--border);margin-top:2rem}.input{width:100%;padding:.5rem .75rem;font-size:.875rem;border:1px solid var(--border);border-radius:var(--radius);outline:none;transition:border-color .15s,box-shadow .15s;font-family:inherit;resize:vertical;background:#fff}.input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px #0d948826}.label{font-size:.875rem;font-weight:500;color:var(--text-secondary);display:block;margin-bottom:.25rem}.section-box{background:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.5rem;border:1px solid var(--border)}@media(max-width:640px){.navbar-inner{flex-wrap:wrap}.nav-links{order:3;width:100%;justify-content:center}.section-header{flex-direction:column;gap:.75rem;align-items:flex-start}}