:root{--color-bg: #fafbfc;--color-surface: #ffffff;--color-surface-alt: #f5f8fa;--color-surface-elev: #ffffff;--color-border: #d8e2ec;--color-border-strong: #b4c2d4;--color-text: #1a2332;--color-text-muted: #5a6e85;--color-text-subtle: #8b9bb0;--color-text-inverse: #ffffff;--color-primary: #1a56db;--color-primary-hover: #1e40af;--color-primary-text: #ffffff;--color-accent: #22c55e;--color-accent-hover: #16a34a;--color-accent-text: #ffffff;--color-accent-tint: rgba(26, 86, 219, .08);--color-success: #16a34a;--color-success-bg: #f0fdf4;--color-warning: #d97706;--color-warning-bg: #fffbeb;--color-danger: #dc2626;--color-danger-bg: #fef2f2;--color-nav-bg: #0f172a;--color-nav-fg: #f1f5f9;--color-nav-fg-muted: #94a3b8;--color-nav-active-bg: #1e293b;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: .25rem;--radius: .625rem;--radius-lg: .875rem;--radius-xl: 1.125rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .04), 0 1px 1px 0 rgba(15, 23, 42, .03);--shadow: 0 1px 3px 0 rgba(15, 23, 42, .07), 0 1px 2px -1px rgba(15, 23, 42, .05);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .08), 0 2px 4px -2px rgba(15, 23, 42, .06);--shadow-lg: 0 12px 24px -6px rgba(15, 23, 42, .12), 0 4px 8px -4px rgba(15, 23, 42, .06);--shadow-glow: 0 0 0 1px rgba(31, 41, 55, .04), 0 8px 24px -8px rgba(31, 41, 55, .14);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-display: var(--font-sans);--font-mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Menlo, Consolas, monospace;--font-feature-settings: "cv11", "ss01", "ss03", "tnum";--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--weight-normal: 400;--weight-medium: 500;--weight-semibold: 600;--weight-bold: 700;--line-tight: 1.2;--line-snug: 1.35;--line-normal: 1.55;--transition-fast: .12s ease-out;--transition: .2s ease-out}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:var(--font-sans);font-feature-settings:var(--font-feature-settings);font-size:var(--text-base);line-height:var(--line-normal);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 90% 50% at 50% -10%,rgba(26,86,219,.05),transparent 60%),linear-gradient(180deg,#fbfcfe,#f5f8fa);pointer-events:none;z-index:0}body>*{position:relative;z-index:1}h1,h2,h3,h4,h5,h6{font-weight:var(--weight-bold);line-height:var(--line-tight);letter-spacing:-.02em;margin:0 0 var(--space-4) 0;color:var(--color-text)}h1{font-size:var(--text-3xl);letter-spacing:-.03em;font-weight:800;line-height:1.05}h2{font-size:var(--text-xl);letter-spacing:-.015em}h3{font-size:var(--text-base);letter-spacing:-.01em;font-weight:var(--weight-semibold)}.eyebrow{font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;font-weight:var(--weight-bold);color:var(--color-accent)}.tabular{font-variant-numeric:tabular-nums}p{margin:0 0 var(--space-4) 0}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;font-size:inherit}input:where([type=text],[type=email],[type=password],[type=tel],[type=url],[type=number],[type=search],[type=date],[type=time],[type=datetime-local],[type=month],[type=week],:not([type])),textarea,select{font-family:inherit;font-size:var(--text-sm);width:100%;padding:.55rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);color:var(--color-text);box-sizing:border-box;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background var(--transition-fast);line-height:1.4}input:where([type=text],[type=email],[type=password],[type=tel],[type=url],[type=number],[type=search],[type=date],[type=time],[type=datetime-local],[type=month],[type=week],:not([type])):hover,textarea:hover,select:hover{border-color:var(--color-border-strong)}input:where([type=text],[type=email],[type=password],[type=tel],[type=url],[type=number],[type=search],[type=date],[type=time],[type=datetime-local],[type=month],[type=week],:not([type])):focus,textarea:focus,select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-tint);background:var(--color-surface)}input::placeholder,textarea::placeholder{color:var(--color-text-subtle)}select{-moz-appearance:none;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'><path d='M1 1.5L6 6.5L11 1.5' stroke='%2378716c' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>");background-repeat:no-repeat;background-position:right .7rem center;padding-right:2rem}input[type=color]{width:4rem;height:2.5rem;padding:0;border:1px solid var(--color-border-strong);border-radius:var(--radius);background:var(--color-surface);cursor:pointer}label{display:block;font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-text-muted);margin-bottom:var(--space-1)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-5);border-radius:var(--radius);font-weight:var(--weight-semibold);font-size:var(--text-base);border:1px solid transparent;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);text-decoration:none;min-height:44px;letter-spacing:-.005em}.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}.btn:focus-visible{outline:none;box-shadow:0 0 0 3px #1f29372e}.btn-primary{background:linear-gradient(180deg,#2563eb,#1a56db);color:var(--color-primary-text);box-shadow:0 1px #ffffff2e inset,0 1px 2px #1a56db33,0 6px 16px -4px #1a56db59;border-color:#1e40af80}.btn-primary:hover{background:linear-gradient(180deg,#1a56db,#1e40af);box-shadow:0 1px #ffffff2e inset,0 2px 4px #1a56db40,0 10px 24px -6px #1a56db73;transform:translateY(-1px)}.btn-accent{background:linear-gradient(180deg,#34d399,#22c55e);color:var(--color-accent-text);box-shadow:0 1px #ffffff38 inset,0 1px 2px #16a34a40,0 6px 16px -4px #16a34a66;border-color:#16a34a80}.btn-accent:hover{background:linear-gradient(180deg,#22c55e,#16a34a);transform:translateY(-1px)}.btn-ghost{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border-strong);box-shadow:0 1px 1px #1c191708}.btn-ghost:hover{background:var(--color-surface-alt);border-color:var(--color-text-muted)}.btn-sm{padding:var(--space-2) var(--space-3);min-height:36px;font-size:var(--text-sm)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5);box-shadow:0 1px #fff9 inset,0 1px 2px #1c19170a,0 8px 24px -16px #1c19171f;transition:box-shadow var(--transition-fast),border-color var(--transition-fast),transform var(--transition-fast)}a.card,button.card,.card-interactive{cursor:pointer}a.card:hover,button.card:hover,.card-interactive:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}.card-soft{background:var(--color-surface-alt);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-4)}.muted{color:var(--color-text-muted)}.subtle{color:var(--color-text-subtle)}.stat-tile{background:linear-gradient(180deg,#fff9,#fff0 30%),var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-5);box-shadow:0 1px #fffc inset,0 1px 2px #1c19170a,0 8px 24px -16px #1c191724;position:relative;overflow:hidden;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.stat-tile:before{content:"";position:absolute;inset:0 0 auto 0;height:2px;background:linear-gradient(90deg,var(--color-primary),rgba(31,41,55,.2) 80%,transparent);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.stat-tile.stat-tile-accent:before{background:linear-gradient(90deg,var(--color-accent),rgba(180,83,9,.3) 80%,transparent)}.stat-tile.stat-tile-success:before{background:linear-gradient(90deg,var(--color-success),rgba(21,128,61,.3) 80%,transparent)}.stat-tile.stat-tile-warning:before{background:linear-gradient(90deg,var(--color-warning),rgba(180,83,9,.3) 80%,transparent)}.pill{display:inline-flex;align-items:center;gap:var(--space-1);padding:.2rem .6rem;border-radius:var(--radius-full);font-size:var(--text-xs);font-weight:var(--weight-semibold);letter-spacing:.02em;white-space:nowrap;line-height:1}.link-arrow{display:inline-block;transition:transform var(--transition-fast)}a:hover .link-arrow,button:hover .link-arrow{transform:translate(2px)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--space-8) var(--space-5);background:var(--color-surface);border:1px dashed var(--color-border-strong);border-radius:var(--radius-lg);color:var(--color-text-muted);gap:var(--space-2)}.empty-state .empty-icon{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-full);background:var(--color-surface-alt);color:var(--color-text-subtle);margin-bottom:var(--space-2)}.empty-state .empty-title{font-size:var(--text-base);font-weight:var(--weight-semibold);color:var(--color-text);margin:0}.empty-state .empty-desc{font-size:var(--text-sm);color:var(--color-text-muted);margin:0;max-width:32ch;line-height:var(--line-snug)}.section-head{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-3)}.section-head h2,.section-head h3{margin:0}.icon-btn{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius);background:transparent;color:var(--color-text-muted);border:1px solid transparent;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast)}.icon-btn:hover{background:var(--color-surface-alt);color:var(--color-text);border-color:var(--color-border)}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.85)}}.cal-add-btn{opacity:0}.cal-day-cell:hover .cal-add-btn,.cal-add-btn:focus-visible{opacity:1;background:var(--color-surface-alt)}@media (max-width: 600px){h1{font-size:var(--text-2xl)}h2{font-size:var(--text-xl)}}.conv-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3)}@media (max-width: 480px){.conv-stats{grid-template-columns:repeat(2,1fr)}.msg-bubble{max-width:88%!important}.conv-composer{flex-direction:column;align-items:stretch}.conv-composer .btn{align-self:flex-end}}