:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a25;--bg-card: rgba(26, 26, 37, .8);--bg-glass: rgba(255, 255, 255, .03);--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);--accent-glow: rgba(99, 102, 241, .4);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--text-accent: #a5b4fc;--success: #10b981;--success-bg: rgba(16, 185, 129, .1);--error: #ef4444;--error-bg: rgba(239, 68, 68, .1);--warning: #f59e0b;--border-color: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .15);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 8px 24px rgba(0, 0, 0, .4);--shadow-lg: 0 16px 48px rgba(0, 0, 0, .5);--shadow-glow: 0 0 40px var(--accent-glow);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-full: 9999px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(99,102,241,.15),transparent),radial-gradient(ellipse 60% 40% at 80% 50%,rgba(139,92,246,.1),transparent),radial-gradient(ellipse 50% 30% at 20% 80%,rgba(168,85,247,.08),transparent);pointer-events:none;z-index:-1}#root{min-height:100vh;display:flex;flex-direction:column}.glass{background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color)}.gradient-text{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.gradient-border{position:relative}.gradient-border:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;padding:1px;border-radius:inherit;background:var(--accent-gradient);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fadeIn{animation:fadeIn var(--transition-base) ease-out}.animate-slideIn{animation:slideIn var(--transition-base) ease-out}.animate-pulse{animation:pulse 2s infinite}.animate-spin{animation:spin 1s linear infinite}.animate-scaleIn{animation:scaleIn var(--transition-base) ease-out}::selection{background:var(--accent-primary);color:#fff}.app{min-height:100vh;display:flex;flex-direction:column}.header{padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--border-color);background:var(--bg-glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:100}.header-content{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:var(--spacing-sm)}.logo-icon{width:40px;height:40px;background:var(--accent-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xl);box-shadow:var(--shadow-glow)}.logo-text{font-size:var(--font-size-xl);font-weight:700;letter-spacing:-.02em}.header-badge{padding:var(--spacing-xs) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);font-size:var(--font-size-sm);color:var(--text-secondary);display:flex;align-items:center;gap:var(--spacing-xs)}.header-badge .dot{width:8px;height:8px;background:var(--success);border-radius:50%;animation:pulse 2s infinite}.main{flex:1;padding:var(--spacing-2xl) var(--spacing-xl);max-width:1200px;margin:0 auto;width:100%}.main-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-xl);align-items:start}@media(max-width:900px){.main-grid{grid-template-columns:1fr}}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--spacing-xl);transition:all var(--transition-base)}.card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.card-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.card-icon{width:36px;height:36px;background:var(--accent-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-lg)}.card-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary)}.input-group{margin-bottom:var(--spacing-lg)}.input-label{display:block;font-size:var(--font-size-sm);font-weight:500;color:var(--text-secondary);margin-bottom:var(--spacing-sm)}.textarea{width:100%;min-height:150px;padding:var(--spacing-md);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-base);resize:vertical;transition:all var(--transition-fast)}.textarea:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.textarea::placeholder{color:var(--text-muted)}.input{width:100%;padding:var(--spacing-md);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-base);transition:all var(--transition-fast)}.input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.input::placeholder{color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);border:none;border-radius:var(--radius-md);font-family:var(--font-family);font-size:var(--font-size-base);font-weight:500;cursor:pointer;transition:all var(--transition-fast);position:relative;overflow:hidden}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-glow)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--bg-secondary);border-color:var(--border-hover)}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-2px)}.btn-full{width:100%}.btn-icon{font-size:var(--font-size-lg)}.btn .spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.tone-selector{margin-top:var(--spacing-lg)}.tone-label{font-size:var(--font-size-sm);font-weight:500;color:var(--text-secondary);margin-bottom:var(--spacing-md);display:flex;align-items:center;gap:var(--spacing-xs)}.tone-options{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.tone-btn{padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-full);color:var(--text-secondary);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;gap:var(--spacing-xs)}.tone-btn:hover:not(:disabled){background:var(--bg-tertiary);border-color:var(--accent-primary);color:var(--text-primary);transform:translateY(-2px)}.tone-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.tone-btn:disabled{opacity:.5;cursor:not-allowed}.email-preview{animation:fadeIn var(--transition-base) ease-out}.email-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg);white-space:pre-wrap;line-height:1.7;font-size:var(--font-size-base);color:var(--text-primary);max-height:400px;overflow-y:auto}.email-actions{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.email-send-section{border-top:1px solid var(--border-color);padding-top:var(--spacing-lg);margin-top:var(--spacing-lg);animation:slideUp var(--transition-base) ease-out}.send-form{display:flex;gap:var(--spacing-sm)}.send-form .input{flex:1}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center;color:var(--text-muted)}.empty-state-icon{width:64px;height:64px;background:var(--bg-tertiary);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-3xl);margin-bottom:var(--spacing-lg);animation:float 3s ease-in-out infinite}.empty-state-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-secondary);margin-bottom:var(--spacing-sm)}.empty-state-text{font-size:var(--font-size-sm);max-width:280px}.toast-container{position:fixed;bottom:var(--spacing-xl);right:var(--spacing-xl);z-index:1000;display:flex;flex-direction:column;gap:var(--spacing-sm)}.toast{padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);display:flex;align-items:center;gap:var(--spacing-sm);min-width:300px;animation:slideIn var(--transition-base) ease-out;box-shadow:var(--shadow-lg)}.toast-success{background:var(--success-bg);border:1px solid var(--success);color:var(--success)}.toast-error{background:var(--error-bg);border:1px solid var(--error);color:var(--error)}.toast-icon{font-size:var(--font-size-lg)}.toast-message{flex:1;font-size:var(--font-size-sm)}.toast-close{background:none;border:none;color:inherit;cursor:pointer;padding:var(--spacing-xs);opacity:.7;transition:opacity var(--transition-fast)}.toast-close:hover{opacity:1}.footer{padding:var(--spacing-lg) var(--spacing-xl);border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);font-size:var(--font-size-sm)}.footer a{color:var(--accent-primary);text-decoration:none;transition:color var(--transition-fast)}.footer a:hover{color:var(--accent-secondary)}.char-counter{text-align:right;font-size:var(--font-size-xs);color:var(--text-muted);margin-top:var(--spacing-xs)}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-secondary) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}.skeleton-line{height:16px;margin-bottom:var(--spacing-sm)}.skeleton-line:last-child{width:60%}