:root{--color-background:#0a0f1f;--color-surface:#10172a;--color-primary:#3b82f6;--color-accent:#f97316;--color-danger:#ef4444;--color-success:#22c55e;--color-text-primary:#e2e8f0;--color-text-secondary:#94a3b8;--color-border:rgba(59,130,246,0.2);--gradient-primary:linear-gradient(135deg,var(--color-primary),#60a5fa);--gradient-accent:linear-gradient(135deg,var(--color-accent),#fb923c);--gradient-hero:linear-gradient(135deg,#3b82f6,#60a5fa,#2dd4bf);--gradient-background:linear-gradient(160deg,#0a0f1f 0%,#020617 100%);--glass-bg:rgba(16,23,42,0.6);--glass-border:rgba(255,255,255,0.1);--ff-primary:'Sarabun',sans-serif;--fs-1:32px;--fs-2:24px;--fs-3:20px;--fs-4:18px;--fs-5:16px;--fs-6:14px;--fs-7:12px;--fw-300:300;--fw-400:400;--fw-500:500;--fw-600:600;--fw-700:700;--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1);--shadow-glow:0 0 20px rgba(59,130,246,0.2);--transition-smooth: 1.1s cubic-bezier(0.4, 0, 0.2, 1); --radius-md:12px;--radius-lg:20px;--safe-area-inset-bottom:env(safe-area-inset-bottom,0px);--safe-area-inset-top:env(safe-area-inset-top,0px);--header-height:4.5rem;--button-group-height:5rem}@keyframes chat-slideFadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes chat-fadeIn{from{opacity:0}to{opacity:1}}@keyframes chat-slideInFromRight{from{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}@keyframes chat-slideOutToLeft{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(-100%)}}@keyframes chat-slideInFromLeft{from{opacity:0;transform:translateX(-100%)}to{opacity:1;transform:translateX(0)}}@keyframes chat-slideOutToRight{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(100%)}}*{margin:0;padding:0;box-sizing:border-box}html,body{scroll-behavior:smooth;height:100%;-webkit-text-size-adjust:none}body{font-family:var(--ff-primary);background:var(--gradient-background);color:var(--color-text-primary);min-height:100vh;height:100%;overflow:hidden;display:flex;flex-direction:column}.chat-app{flex:1;display:flex;flex-direction:column;overflow:hidden;padding-top:var(--safe-area-inset-top)}.chat-main{flex:1;overflow-y:auto;position:relative;scrollbar-width:none;-ms-overflow-style:none;display:flex;flex-direction:column;padding-bottom:var(--safe-area-inset-bottom)}.chat-main::-webkit-scrollbar{display:none}.chat-container{flex:1;display:flex;flex-direction:column;justify-content:center;width:100%;max-width:700px;margin:0 auto;padding:1rem 1.5rem; position: relative; overflow: hidden; }.chat-step-card{display:none;flex-direction:column;width:100%;transition:transform var(--transition-smooth), opacity var(--transition-smooth);position: absolute; top: 0; left: 0; right: 0; bottom: 0; padding-top: 1rem; padding-bottom: 1rem;}.chat-step-card.chat-active{display:flex;position:relative;animation-fill-mode: forwards;}.chat-step-card:first-child{margin-top:0}.chat-anim-fade-in{animation:chat-slideFadeIn var(--transition-smooth)}.chat-anim-slide-in-right{animation:chat-slideInFromRight var(--transition-smooth)}.chat-anim-slide-out-left{animation:chat-slideOutToLeft var(--transition-smooth)}.chat-anim-slide-in-left{animation:chat-slideInFromLeft var(--transition-smooth)}.chat-anim-slide-out-right{animation:chat-slideOutToRight var(--transition-smooth)}.chat-step-card-content{display:flex;flex-direction:column;justify-content:center;padding:1rem 0}.chat-step-header{display:flex;align-items:center;gap:1rem;width:100%;max-width:100%;background:var(--glass-bg);backdrop-filter:blur(10px);padding:0.75rem 1rem;border-radius:var(--radius-md);border:1px solid var(--glass-border);transition:opacity 0.4s ease;margin-bottom:1rem}.chat-step-number{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:var(--fw-600);color:var(--color-background);background:var(--gradient-accent);flex-shrink:0}.chat-progress-container{flex:1}.chat-progress-bar{height:8px;background:rgba(255,255,255,0.1);border-radius:999px;overflow:hidden}.chat-progress-fill{height:100%;background:var(--gradient-accent);border-radius:999px;transition:width var(--transition-smooth)}.chat-step-title{font-size:var(--fs-6);color:var(--color-text-secondary);font-weight:var(--fw-500)}.chat-welcome-hero h1{font-size:4.2rem;font-weight:var(--fw-700);margin-bottom:1rem;background:var(--gradient-hero);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-align:center;text-shadow:0 0 15px rgba(96,165,250,0.4),0 0 25px rgba(45,212,191,0.3);animation:chat-fadeIn 1s ease-in-out}.chat-welcome-hero p{text-align:center;color:var(--color-text-secondary);font-size:var(--fs-4);line-height:1.8;margin-bottom:2.5rem;max-width:600px;animation:chat-fadeIn 1.5s ease-in-out;margin-left:auto;margin-right:auto}.chat-welcome-hero a{color:var(--color-accent);font-weight:var(--fw-600);text-decoration:none}.chat-welcome-hero a:hover{text-decoration:underline}.chat-step-content h2{font-size:var(--fs-1);font-weight:var(--fw-700);margin-bottom:0.75rem}.chat-step-content p{color:var(--color-text-secondary);line-height:1.8;margin-bottom:2rem;max-width:600px}.chat-step-content strong{color:var(--color-text-primary);font-weight:var(--fw-600)}.chat-step-content u{text-decoration-color:var(--color-primary);text-decoration-thickness:2px}.chat-form-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;margin:1.5rem 0}.chat-form-group{display:flex;flex-direction:column}.chat-form-label{font-size:var(--fs-6);font-weight:var(--fw-500);margin-bottom:0.5rem;color:var(--color-text-secondary)}.chat-form-input,.chat-form-select,.chat-form-textarea{padding:1rem;border:1px solid var(--color-border);background:var(--glass-bg);border-radius:var(--radius-md);font-size:var(--fs-5);transition:all 0.3s ease;color:var(--color-text-primary);-webkit-appearance:none;appearance:none}.chat-form-input::placeholder,.chat-form-textarea::placeholder{color:#64748b}.chat-form-input:focus,.chat-form-select:focus,.chat-form-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(59,130,246,0.3);background:var(--color-surface)}.chat-form-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");background-position:right 1rem center;background-repeat:no-repeat;background-size:1.5em 1.5em;padding-right:3rem}.chat-button-group{padding:1rem 0 0 0;width:100%;margin-top:0.5rem}.chat-button-group-grid{display:grid;gap:0.75rem}.chat-btn{padding:1rem;border:none;border-radius:var(--radius-md);font-size:var(--fs-5);font-family:var(--ff-primary);font-weight:var(--fw-600);cursor:pointer;transition:all 0.3s ease;display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;text-decoration:none}.chat-btn-primary{background:var(--gradient-primary);color:var(--color-text-primary);box-shadow:var(--shadow-glow)}.chat-btn-primary:hover{transform:translateY(-3px);box-shadow:0 6px 20px rgba(59,130,246,0.3)}.chat-btn-secondary{background:transparent;color:var(--color-text-primary);border:1px solid var(--color-border)}.chat-btn-secondary:hover{background:var(--color-surface);border-color:var(--color-primary)}.chat-btn:disabled{opacity:0.5;cursor:not-allowed;transform:none !important;box-shadow:none !important;background:var(--color-surface) !important;color:var(--color-text-secondary) !important}.chat-notification-toast{position:fixed;top:calc(1rem + var(--safe-area-inset-top));left:1rem;right:1rem;width:auto;transform:translateY(-100%);padding:1rem 1.5rem;border-radius:var(--radius-md);color:white;font-weight:500;z-index:999999;box-shadow:var(--shadow-lg);transition:transform 0.6s var(--transition-smooth),opacity 0.6s ease;text-align:center;text-shadow:0 1px 3px rgba(0,0,0,0.3);background:var(--color-success);backdrop-filter:blur(5px);border:none;opacity:0}.chat-notification-toast.chat-show{transform:translateY(0);opacity:1}.chat-notification-toast.chat-hide{transform:translateY(-100%);opacity:0}#chat-summaryContent{background:var(--color-surface);padding:1.5rem;border-radius:var(--radius-md);text-align:left;line-height:1.8;word-wrap:break-word;overflow-wrap:break-word;white-space:normal;color:var(--color-text-secondary)}#chat-summaryContent strong{color:var(--color-text-primary);display:inline-block;min-width:80px;margin-right:0.5rem}#chat-summaryContent div{margin-bottom:0.5rem}#chat-summaryContent div:last-child{margin-bottom:0}