:root{--m-primary: #1e3a8a;--m-primary-light: #3b82f6;--m-primary-dark: #1e293b;--m-accent: #14b8a6;--m-accent-light: #5eead4;--m-accent-dark: #0f766e;--m-success: #10b981;--m-warn: #f59e0b;--m-error: #ef4444;--m-gray-50: #f9fafb;--m-gray-100: #f3f4f6;--m-gray-200: #e5e7eb;--m-gray-300: #d1d5db;--m-gray-400: #9ca3af;--m-gray-500: #6b7280;--m-gray-600: #4b5563;--m-gray-700: #374151;--m-gray-800: #1f2937;--m-gray-900: #111827;--m-bg: var(--m-gray-50);--m-surface: #ffffff;--m-surface-muted: var(--m-gray-100);--m-border: var(--m-gray-200);--m-border-strong: var(--m-gray-300);--m-text: var(--m-gray-900);--m-text-muted: var(--m-gray-500);--m-text-subtle: var(--m-gray-600);--m-text-on-primary: #ffffff;--m-gradient: linear-gradient(135deg, #1e3a8a 0%, #14b8a6 100%);--m-gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);--m-gradient-accent: linear-gradient(135deg, #14b8a6 0%, #5eead4 100%);--m-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--m-font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--m-text-xs: .75rem;--m-text-sm: .875rem;--m-text-base: 1rem;--m-text-lg: 1.125rem;--m-text-xl: 1.25rem;--m-text-2xl: 1.5rem;--m-text-3xl: 1.875rem;--m-weight-normal: 400;--m-weight-medium: 500;--m-weight-semibold: 600;--m-weight-bold: 700;--m-space-xs: .25rem;--m-space-sm: .5rem;--m-space-md: 1rem;--m-space-lg: 1.5rem;--m-space-xl: 2rem;--m-space-2xl: 3rem;--m-radius-sm: .25rem;--m-radius-md: .5rem;--m-radius-lg: .75rem;--m-radius-xl: 1rem;--m-radius-pill: 9999px;--m-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--m-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--m-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--m-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--m-shadow-primary: 0 4px 6px -1px rgba(30, 58, 138, .3);--m-shadow-accent: 0 4px 6px -1px rgba(20, 184, 166, .3);--m-trans: all .3s ease;--m-trans-fast: all .15s ease;--m-nav-h: 60px;--m-max-w: 720px}*,*:before,*:after{box-sizing:border-box}html,body,#app{margin:0;padding:0;height:100%}body{font-family:var(--m-font-sans);font-size:var(--m-text-base);line-height:1.5;color:var(--m-text);background:var(--m-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}button{font-family:inherit;cursor:pointer}input,textarea,select,button{font-family:inherit;font-size:inherit;color:inherit}input,textarea{background:var(--m-surface)}a{color:var(--m-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{margin:0;color:var(--m-primary-dark);font-weight:var(--m-weight-semibold)}h1{font-size:var(--m-text-3xl);font-weight:var(--m-weight-bold)}h2{font-size:var(--m-text-2xl)}h3{font-size:var(--m-text-xl)}p{margin:0}ul{margin:0;padding:0;list-style:none}code{font-family:var(--m-font-mono);font-size:.9em;background:var(--m-gray-100);padding:2px 6px;border-radius:var(--m-radius-sm)}@supports (-webkit-touch-callout: none){input,textarea,select{font-size:16px}}.safe-bottom{padding-bottom:max(var(--m-space-md),env(safe-area-inset-bottom))}.app-shell{display:flex;flex-direction:column;min-height:100dvh;padding-top:env(safe-area-inset-top)}.nav{position:sticky;top:0;z-index:10;background:var(--m-gradient);color:var(--m-text-on-primary);padding:var(--m-space-md) var(--m-space-lg);padding-top:calc(var(--m-space-md) + env(safe-area-inset-top));box-shadow:var(--m-shadow-md);display:flex;align-items:center;justify-content:space-between}.nav-brand{display:flex;align-items:center;gap:var(--m-space-sm);font-weight:var(--m-weight-bold);font-size:var(--m-text-lg);letter-spacing:-.01em;color:var(--m-text-on-primary);text-decoration:none}.nav-brand:hover{color:var(--m-text-on-primary);text-decoration:none}.nav-mark{width:28px;height:28px;border-radius:var(--m-radius-md);background:#ffffff26;display:inline-flex;align-items:center;justify-content:center}.nav-actions{display:flex;gap:var(--m-space-sm)}.nav-link{color:#ffffffd9;padding:6px 12px;border-radius:var(--m-radius-md);text-decoration:none;font-size:var(--m-text-sm);font-weight:var(--m-weight-medium);transition:var(--m-trans-fast)}.nav-link:hover,.nav-link.active{color:var(--m-text-on-primary);background:#ffffff1f;text-decoration:none}.container{max-width:var(--m-max-w);width:100%;margin:0 auto;padding:var(--m-space-lg);flex:1}.card{background:var(--m-surface);border:1px solid var(--m-border);border-radius:var(--m-radius-lg);padding:var(--m-space-lg);box-shadow:var(--m-shadow-sm);transition:var(--m-trans)}.card.clickable{cursor:pointer}.card.clickable:hover{box-shadow:var(--m-shadow-md);border-color:var(--m-border-strong)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--m-space-sm);padding:.625rem 1.25rem;border-radius:var(--m-radius-md);border:none;font-weight:var(--m-weight-semibold);font-size:var(--m-text-sm);line-height:1.2;transition:var(--m-trans);user-select:none}.btn:disabled{cursor:not-allowed;opacity:.5;transform:none!important}.btn-primary{background:var(--m-gradient-primary);color:var(--m-text-on-primary);box-shadow:var(--m-shadow-primary)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 16px #1e3a8a4d}.btn-accent{background:var(--m-gradient-accent);color:var(--m-text-on-primary);box-shadow:var(--m-shadow-accent)}.btn-accent:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 12px #14b8a666}.btn-outline{background:transparent;color:var(--m-primary);border:2px solid var(--m-primary)}.btn-outline:hover:not(:disabled){background:var(--m-primary);color:var(--m-text-on-primary);transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--m-primary)}.btn-ghost:hover:not(:disabled){background:var(--m-gray-100)}.btn-danger{background:var(--m-error);color:var(--m-text-on-primary)}.btn-danger:hover:not(:disabled){background:#dc2626;transform:translateY(-1px)}.btn-lg{padding:.875rem 1.75rem;font-size:var(--m-text-base);border-radius:var(--m-radius-md)}.btn-block{width:100%}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:var(--m-text-sm);font-weight:var(--m-weight-semibold);color:var(--m-gray-700)}.field-help{font-size:var(--m-text-sm);color:var(--m-text-muted)}.input,.textarea{width:100%;padding:.625rem .875rem;border:2px solid var(--m-border-strong);border-radius:var(--m-radius-md);background:var(--m-surface);color:var(--m-text);transition:var(--m-trans-fast)}.input:focus,.textarea:focus{outline:none;border-color:var(--m-primary);box-shadow:0 0 0 3px #1e3a8a1a}.textarea{resize:vertical;min-height:80px}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--m-radius-pill);font-size:var(--m-text-xs);font-weight:var(--m-weight-semibold);letter-spacing:.01em;line-height:1.4}.badge-neutral{background:var(--m-gray-100);color:var(--m-gray-700)}.badge-primary{background:#1e3a8a14;color:var(--m-primary)}.badge-accent{background:#14b8a61f;color:var(--m-accent-dark)}.badge-success{background:#d1fae5;color:#065f46}.badge-warn{background:#fef3c7;color:#92400e}.badge-error{background:#fee2e2;color:#991b1b}.dot{width:6px;height:6px;border-radius:50%;display:inline-block}.conv-list{display:flex;flex-direction:column;gap:var(--m-space-md)}.conv-card{display:flex;flex-direction:column;gap:8px;padding:var(--m-space-md);background:var(--m-surface);border:1px solid var(--m-border);border-radius:var(--m-radius-lg);transition:var(--m-trans);cursor:pointer;text-decoration:none;color:inherit}.conv-card:hover{transform:translateY(-1px);box-shadow:var(--m-shadow-md);border-color:var(--m-border-strong);text-decoration:none}.conv-card.conv-needs-reply{border-left:4px solid var(--m-accent)}.conv-card.conv-timed-out{border-left:4px solid var(--m-warn)}.conv-card.conv-human{border-left:4px solid var(--m-primary-light)}.conv-row{display:flex;justify-content:space-between;align-items:center;gap:var(--m-space-sm)}.conv-title{font-weight:var(--m-weight-semibold);color:var(--m-text)}.conv-time{font-size:var(--m-text-xs);color:var(--m-text-muted);white-space:nowrap}.conv-preview{font-size:var(--m-text-sm);color:var(--m-text-subtle);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.conv-meta{display:flex;gap:var(--m-space-xs);align-items:center;flex-wrap:wrap}.thread{display:flex;flex-direction:column;gap:var(--m-space-md);padding-bottom:180px}.thread-header{display:flex;flex-direction:column;gap:8px;padding-bottom:var(--m-space-md);border-bottom:1px solid var(--m-border)}.thread-header h2{display:flex;align-items:center;gap:var(--m-space-sm)}.contact-row{display:flex;gap:var(--m-space-md);flex-wrap:wrap;font-size:var(--m-text-sm);color:var(--m-text-subtle)}.msg{display:flex;flex-direction:column;max-width:80%;padding:10px 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env(safe-area-inset-bottom));z-index:5}.composer:before{content:"";position:absolute;top:-1px;left:0;right:0;height:2px;background:var(--m-gradient);opacity:.9}.composer-inner{max-width:var(--m-max-w);margin:0 auto;display:flex;gap:var(--m-space-sm);align-items:flex-end}.composer-inner .textarea{flex:1;min-height:44px;max-height:160px;background:var(--m-gray-50);border-color:var(--m-border-strong)}.composer-inner .textarea:focus{background:var(--m-surface)}.composer-status{font-size:var(--m-text-xs);color:var(--m-text-muted);text-align:center;padding:var(--m-space-sm)}.empty{text-align:center;padding:var(--m-space-2xl) var(--m-space-lg);color:var(--m-text-muted)}.empty h2{color:var(--m-text-subtle);margin-bottom:var(--m-space-sm)}.banner{padding:var(--m-space-md);border-radius:var(--m-radius-md);border-left:4px solid;margin-bottom:var(--m-space-md);font-size:var(--m-text-sm)}.banner-info{background:#dbeafe;border-color:var(--m-primary);color:#1e40af}.banner-warn{background:#fef3c7;border-color:var(--m-warn);color:#92400e}.banner-error{background:#fee2e2;border-color:var(--m-error);color:#991b1b}.banner-success{background:#d1fae5;border-color:var(--m-success);color:#065f46}.setting-row{display:flex;align-items:center;justify-content:space-between;padding:var(--m-space-md) 0;border-bottom:1px solid var(--m-border);gap:var(--m-space-md)}.setting-row:last-child{border-bottom:none}.setting-label{font-weight:var(--m-weight-semibold);color:var(--m-text)}.setting-sub{font-size:var(--m-text-sm);color:var(--m-text-muted);margin-top:2px}.switch{position:relative;display:inline-block;width:44px;height:26px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.switch .slider{position:absolute;inset:0;background:var(--m-gray-300);border-radius:var(--m-radius-pill);transition:var(--m-trans-fast)}.switch .slider:before{content:"";position:absolute;height:20px;width:20px;left:3px;top:3px;background:#fff;border-radius:50%;transition:var(--m-trans-fast);box-shadow:var(--m-shadow-sm)}.switch input:checked+.slider{background:var(--m-gradient)}.switch input:checked+.slider:before{transform:translate(18px)}.auth-wrap{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:var(--m-space-lg);background:radial-gradient(1200px 600px at 10% -10%,rgba(20,184,166,.2),transparent 60%),radial-gradient(900px 500px at 110% 110%,rgba(30,58,138,.25),transparent 60%),var(--m-gray-50)}.auth-card{width:100%;max-width:420px;padding:var(--m-space-xl);background:var(--m-surface);border-radius:var(--m-radius-xl);box-shadow:var(--m-shadow-xl);display:flex;flex-direction:column;gap:var(--m-space-md)}.auth-logo{display:flex;align-items:center;gap:var(--m-space-sm);font-weight:var(--m-weight-bold);color:var(--m-primary-dark)}.auth-logo svg{width:36px;height:36px}.auth-title{font-size:var(--m-text-xl);font-weight:var(--m-weight-bold);color:var(--m-primary-dark)}.auth-sub{color:var(--m-text-subtle);font-size:var(--m-text-sm);margin-bottom:var(--m-space-sm)}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;display:inline-block}.spinner-dark{border-color:#1e3a8a33;border-top-color:var(--m-primary)}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 520px){.container{padding:var(--m-space-md)}.nav{padding-left:var(--m-space-md);padding-right:var(--m-space-md)}.msg{max-width:92%}.auth-card{padding:var(--m-space-lg)}}