*{box-sizing:border-box;margin:0;padding:0}
body{height:100vh;overflow:hidden;font-family:'Segoe UI',system-ui,sans-serif;background:#f0f4f8;display:flex;flex-direction:column}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:#f0f4f8}::-webkit-scrollbar-thumb{background:#c8d0dc;border-radius:3px}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@keyframes bounce{0%,80%,100%{transform:translateY(0)}40%{transform:translateY(-5px)}}
.fade-in{animation:fadeIn .3s ease forwards}
.spin{animation:spin 1s linear infinite}

/* Modal */
#modal-overlay{position:fixed;inset:0;background:rgba(10,20,45,0.78);display:flex;align-items:center;justify-content:center;z-index:9999;backdrop-filter:blur(6px)}
.modal-box{background:#fff;border-radius:18px;padding:36px 32px;width:90%;max-width:460px;box-shadow:0 24px 80px rgba(0,0,0,0.35)}

/* Header */
#header{background:#fff;display:flex;align-items:center;padding:10px 24px;flex-shrink:0;border-bottom:3px solid #1e3d73;box-shadow:0 2px 10px rgba(30,61,115,.12);gap:0}
.header-div{width:2px;height:32px;background:#dde3ec;margin:0 18px}
#header-breadcrumb{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:600;color:#4b5a6e}
#header-breadcrumb .bc-root{color:#1e3d73;font-weight:700;font-size:22px;letter-spacing:.02em;cursor:pointer}
#header-breadcrumb .bc-sep{color:#3a8c68;font-size:20px;font-weight:700;display:none}
#header-breadcrumb .bc-active{color:#3a8c68;font-weight:700;display:none}
#api-key-btn{margin-left:auto;background:#1e3d73;border:none;border-radius:9px;padding:7px 16px;color:#fff;font-size:12.5px;font-weight:600;cursor:pointer;font-family:inherit;display:flex;align-items:center;gap:6px}

/* Progress */
#progress-bar{height:4px;background:linear-gradient(90deg,#1e3d73,#3a8c68);transition:width .4s ease;flex-shrink:0}

/* Areas */
.area{flex:1;overflow-y:auto;padding:24px 28px;display:none}
.area.active{display:block}

/* Start: case cards */
#start-area{flex:1;overflow-y:auto;display:none}
#start-area.active{display:flex;flex-direction:column;align-items:center;padding:24px 28px}
.case-grid{display:grid;grid-template-columns:1fr;gap:12px;max-width:520px;width:100%}
.case-card{background:#fff;border-radius:14px;padding:18px 20px;cursor:pointer;border:2px solid transparent;box-shadow:0 2px 12px rgba(30,61,115,.08);transition:all .18s;display:flex;align-items:flex-start;gap:16px}
.case-card:hover{border-color:#1e3d73;box-shadow:0 6px 24px rgba(30,61,115,.15);transform:translateY(-2px)}
.case-emoji{font-size:26px;flex-shrink:0;margin-top:2px}
.case-title{font-size:14px;font-weight:700;color:#1e3d73;margin-bottom:4px}
.case-desc{font-size:12.5px;color:#6b7a8d;line-height:1.5}

/* FAQ accordion */
.faq-item{border:1.5px solid #dde3ec;border-radius:11px;margin-bottom:9px;overflow:hidden}
.faq-q{padding:13px 17px;cursor:pointer;font-weight:600;color:#1e3d73;font-size:14px;display:flex;justify-content:space-between;align-items:center;background:#fff;transition:background .15s}
.faq-q:hover{background:#f8fafc}
.faq-q.open{background:#f0faf5;color:#3a8c68}
.faq-a{display:none;padding:0 17px 14px;font-size:13.5px;color:#1e293b;line-height:1.75;background:#fff;white-space:pre-wrap}
.faq-a.open{display:block}
.faq-chevron{font-size:11px;color:#9ba8bb;transition:transform .2s;flex-shrink:0;margin-left:12px}
.faq-q.open .faq-chevron{transform:rotate(180deg);color:#3a8c68}

/* Buttons */
.btn-primary{padding:11px 24px;border-radius:10px;border:none;background:#3a8c68;color:#fff;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;gap:8px;transition:background .15s}
.btn-primary:hover:not(:disabled){background:#2e7a5a}
.btn-primary:disabled{background:#a3c9b8;cursor:not-allowed}
.btn-navy{padding:11px 24px;border-radius:10px;border:none;background:#1e3d73;color:#fff;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;gap:8px}
.btn-navy:hover:not(:disabled){background:#2a4f8f}
.btn-navy:disabled{background:#c8d0dc;cursor:not-allowed}

/* Inputs */
.text-inp{width:100%;padding:10px 13px;border:1.5px solid #dde3ec;border-radius:9px;font-size:13.5px;font-family:inherit;color:#1a2740;background:#f8fafc;outline:none;transition:border-color .15s}
.text-inp:focus{border-color:#3a8c68}
.inp-label{font-size:12.5px;font-weight:600;color:#4b5a6e;margin-bottom:4px;display:block}
.inp-hint{font-size:11.5px;color:#9ba8bb;margin-top:3px;line-height:1.45}
.inp-group{margin-bottom:16px}

/* Mode cards (within modules) */
.mode-card{background:#fff;border:2px solid #dde3ec;border-radius:14px;padding:18px 20px;cursor:pointer;display:flex;gap:16px;align-items:flex-start;transition:all .15s;margin-bottom:12px}
.mode-card:hover{border-color:#3a8c68;box-shadow:0 4px 18px rgba(58,140,104,.15);transform:translateY(-1px)}
.mode-card.selected{border-color:#3a8c68;background:#f0faf5;box-shadow:0 4px 18px rgba(58,140,104,.12)}
.mode-card-icon{font-size:26px;flex-shrink:0;margin-top:2px}
.mode-card-title{font-weight:700;color:#1e3d73;font-size:14.5px;margin-bottom:4px}
.mode-card-desc{color:#4b5a6e;font-size:13px;line-height:1.55}

/* Chat bubbles */
.ki-bubble{display:flex;gap:10px;align-items:flex-start}
.ki-avatar{width:32px;height:32px;border-radius:50%;background:#1e3d73;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px;color:#fff}
.ki-text{background:#fff;border:1px solid #eef1f5;border-radius:4px 14px 14px 14px;padding:11px 15px;font-size:13.5px;line-height:1.7;color:#1e293b;max-width:88%;box-shadow:0 1px 4px rgba(0,0,0,.05);white-space:pre-wrap}
.user-bubble{display:flex;justify-content:flex-end}
.user-text{background:#1e3d73;color:#fff;border-radius:14px 4px 14px 14px;padding:10px 15px;font-size:13.5px;line-height:1.65;max-width:78%;white-space:pre-wrap}
.thinking{display:flex;gap:5px;align-items:center;padding:3px 0}
.dot{width:7px;height:7px;border-radius:50%;background:#3a8c68;animation:bounce .8s ease infinite}
.dot:nth-child(2){animation-delay:.15s}.dot:nth-child(3){animation-delay:.3s}
.chat-ta{flex:1;border:1.5px solid #dde3ec;border-radius:11px;padding:10px 13px;font-size:13.5px;font-family:inherit;resize:none;outline:none;line-height:1.6;min-height:44px;max-height:110px;background:#f8fafc;color:#1a2740}
.chat-ta:focus{border-color:#3a8c68}
.chat-send{padding:0 18px;background:#3a8c68;color:#fff;border:none;border-radius:11px;font-weight:700;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;min-height:44px;flex-shrink:0}
.chat-send:disabled{background:#a3c9b8;cursor:not-allowed}

/* Result box */
.result-box{background:#fff;border:1.5px solid #dde3ec;border-radius:14px;overflow:hidden;margin-top:16px}
.result-toolbar{background:#f4f7fb;border-bottom:1px solid #eef1f5;padding:9px 16px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;font-weight:600;color:#4b5a6e}
.result-ta{width:100%;min-height:380px;border:none;padding:16px 18px;font-size:13px;font-family:'Courier New',monospace;resize:vertical;outline:none;line-height:1.75;color:#1e293b;background:#fff}
.copy-btn{background:none;border:1.5px solid #c8d4ea;border-radius:8px;padding:5px 12px;color:#6b7a8d;font-weight:600;font-size:12px;cursor:pointer;font-family:inherit;transition:all .2s}
.copy-btn.copied{border-color:#3a8c68;color:#3a8c68}

/* Doc cards */
.doc-card{background:#fff;border:1.5px solid #dde3ec;border-radius:11px;padding:13px 17px;cursor:pointer;display:flex;gap:12px;align-items:center;transition:all .15s;margin-bottom:9px}
.doc-card:hover{border-color:#3a8c68;background:#f0faf5}
.doc-card.selected{border-color:#3a8c68;background:#f0faf5}
.doc-card-icon{font-size:22px;flex-shrink:0}
.doc-card-title{font-weight:600;color:#1e3d73;font-size:13.5px;margin-bottom:2px}
.doc-card-desc{font-size:12px;color:#6b7a8d}

/* Info boxes */
.note-box{background:#f0f6ff;border:1px solid #c8d4ea;border-radius:10px;padding:12px 16px;font-size:13px;color:#1e3d73;line-height:1.6;margin-bottom:16px}

/* Back button */
.back-btn{background:none;border:1.5px solid #dde3ec;border-radius:20px;padding:6px 14px;font-size:12.5px;cursor:pointer;color:#4b5a6e;font-family:inherit;margin-bottom:16px;transition:all .15s}
.back-btn:hover{border-color:#1e3d73;color:#1e3d73}

/* Section */
.sec-h{font-size:18px;font-weight:700;color:#1e3d73;margin-bottom:6px}
.sec-sub{font-size:13.5px;color:#6b7a8d;line-height:1.55;margin-bottom:22px}

/* KZ grid */
.kz-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 24px}
@media(max-width:600px){.kz-grid{grid-template-columns:1fr}}

/* KZ info toggle */
.kz-info-btn{background:none;border:1.5px solid #c8d4ea;border-radius:50%;width:18px;height:18px;font-size:10px;color:#9ba8bb;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;padding:0;font-family:inherit;vertical-align:middle;transition:all .15s;margin-left:4px}
.kz-info-btn:hover{border-color:#3a8c68;color:#3a8c68;background:#f0faf5}
.kz-info-box{display:none;background:#f0f6ff;border:1px solid #c8d4ea;border-radius:9px;padding:10px 14px;font-size:12.5px;color:#1e3d73;line-height:1.65;margin-top:6px}
.kz-info-box.open{display:block}

/* Footer */
#app-footer{background:#fff;border-top:1px solid #dde3ec;padding:8px 24px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
.footer-copy{font-size:11.5px;color:#9ba8bb;font-weight:500}

/* Premium badge */
.premium-badge{display:inline-flex;align-items:center;gap:4px;background:#7c3aed;color:#fff;border-radius:20px;padding:2px 9px;font-size:10.5px;font-weight:700;letter-spacing:.04em;flex-shrink:0}

/* Upload dropzone */
.upload-dropzone{border:2px dashed #c8d4ea;border-radius:12px;padding:28px 20px;text-align:center;cursor:pointer;transition:all .2s;background:#f8fafc;margin-bottom:14px}
.upload-dropzone:hover,.upload-dropzone.dragover{border-color:#3a8c68;background:#f0faf5}
.upload-file-info{display:none;align-items:center;gap:10px;background:#f0faf5;border:1.5px solid #a8d9c0;border-radius:10px;padding:10px 14px;margin-bottom:14px}
.upload-file-info.visible{display:flex}
.up-mode-btn{flex:1;justify-content:center;padding:8px 14px;border-radius:9px;border:1.5px solid #dde3ec;background:#fff;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;color:#4b5a6e;transition:all .15s}
.up-mode-btn.active{background:#1e3d73;color:#fff;border-color:#1e3d73}