@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");:root{--bg:#f1f5f9;--panel:#ffffff;--panel-2:#f8fafc;--panel-3:#f0f4f8;--line:#e2e8f0;--line-strong:#cbd5e1;--text:#0f172a;--text-2:#334155;--muted:#64748b;--muted-2:#94a3b8;--brand:#6366f1;--brand-dark:#4f46e5;--brand-light:#eef2ff;--brand-border:#c7d2fe;--success:#10b981;--success-light:#d1fae5;--danger:#ef4444;--danger-dark:#dc2626;--danger-light:#fee2e2;--shadow-xs:0 1px 2px rgba(0,0,0,0.04);--shadow-sm:0 1px 3px rgba(0,0,0,0.08),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.08),0 2px 4px -1px rgba(0,0,0,0.04);--shadow-lg:0 10px 25px -3px rgba(0,0,0,0.1),0 4px 8px -2px rgba(0,0,0,0.06);--shadow-xl:0 20px 40px -8px rgba(0,0,0,0.16),0 8px 16px -4px rgba(0,0,0,0.08);--r-sm:5px;--r:8px;--r-md:10px;--r-lg:14px;--r-xl:20px}*{box-sizing:border-box;margin:0;padding:0}body,html{min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--muted-2)}.login-page{min-height:100vh;display:grid;place-items:center;padding:20px;background-image:radial-gradient(at 20% 50%,rgba(129,140,248,.6) 0,transparent 55%),radial-gradient(at 80% 20%,rgba(192,132,252,.5) 0,transparent 55%),radial-gradient(at 50% 90%,rgba(99,102,241,.4) 0,transparent 55%),linear-gradient(135deg,#1e1b4b,#0f0c29)}.login-card{width:min(400px,100%);padding:40px;background:rgba(255,255,255,.97);border-radius:var(--r-xl);box-shadow:var(--shadow-xl),0 0 0 1px rgba(255,255,255,.08)}.login-header{text-align:center;margin-bottom:32px}.login-icon{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;background:linear-gradient(135deg,var(--brand) 0,#8b5cf6 100%);border-radius:var(--r-lg);margin-bottom:16px;font-size:22px;color:white;box-shadow:0 4px 14px rgba(99,102,241,.45)}.login-header h1{font-size:22px;font-weight:700;color:var(--text);letter-spacing:-.4px}.login-header p{color:var(--muted);font-size:13px;margin-top:4px}.app-shell{height:100vh;display:grid;grid-template-rows:56px 1fr;overflow:hidden}.topbar{gap:8px;padding:0 20px;background:var(--panel);border-bottom:1px solid var(--line);box-shadow:var(--shadow-xs);z-index:10}.brand,.topbar{display:flex;align-items:center}.brand{gap:9px;font-weight:700;font-size:15px;color:var(--text);letter-spacing:-.3px;min-width:155px}.brand-dot{width:26px;height:26px;background:linear-gradient(135deg,var(--brand) 0,#8b5cf6 100%);border-radius:7px;flex-shrink:0;box-shadow:0 2px 6px rgba(99,102,241,.35)}.topbar-spacer{flex:1 1}.topbar-label{font-size:12px;font-weight:500;color:var(--muted);white-space:nowrap}.toolbar-group{display:flex}.button,.toolbar-group{align-items:center;gap:6px}.button{display:inline-flex;justify-content:center;height:34px;padding:0 14px;font-size:13px;font-weight:500;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);color:var(--text-2);white-space:nowrap;transition:background .12s,border-color .12s,box-shadow .12s,transform .08s;line-height:1}.button:hover{background:var(--panel-2);border-color:var(--line-strong);box-shadow:var(--shadow-xs)}.button:active{transform:translateY(1px)}.button.primary{background:var(--brand);border-color:var(--brand);color:white;box-shadow:0 1px 3px rgba(99,102,241,.3)}.button.primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);box-shadow:0 3px 10px rgba(99,102,241,.4)}.button.danger{background:var(--danger);border-color:var(--danger);color:white}.button.danger:hover{background:var(--danger-dark);border-color:var(--danger-dark)}.button:disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important}.tabs{display:flex;gap:4px;padding:7px 14px;background:var(--panel);border-bottom:1px solid var(--line)}.tab,.tabs{align-items:center}.tab{display:inline-flex;gap:6px;height:30px;padding:0 13px;font-size:13px;font-weight:500;border:1px solid transparent;border-radius:var(--r);background:transparent;color:var(--muted);cursor:pointer;transition:all .12s}.tab:hover{color:var(--text);background:var(--panel-3)}.tab.active{background:var(--brand-light);color:var(--brand);border-color:var(--brand-border);font-weight:600}.editor-grid{min-height:0;display:grid;grid-template-columns:280px minmax(0,1fr) 380px;overflow:hidden}.sidebar{display:flex;flex-direction:column;min-height:0;background:var(--panel);border-right:1px solid var(--line);overflow-y:auto}.panel-header{padding:14px 16px 12px;border-bottom:1px solid var(--line);flex-shrink:0}.panel-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.7px;color:var(--muted)}.panel-body{padding:14px 16px;flex:1 1}.upload-zone{border:1.5px dashed var(--line-strong);border-radius:var(--r-md);padding:14px;background:var(--panel-2);margin-bottom:14px;transition:border-color .15s,background .15s}.upload-zone:focus-within{border-color:var(--brand);background:var(--brand-light)}.prompt-panel{display:flex;flex-direction:column;min-height:0;background:var(--panel);border-left:1px solid var(--line);overflow-y:auto}.main-area{min-width:0;min-height:0;display:grid;grid-template-rows:44px 1fr;overflow:hidden;background:var(--panel-2)}.slide-preview{padding:28px;overflow:auto;background:var(--panel-2)}.slide-page{width:min(900px,100%);min-height:506px;margin:0 auto 24px;padding:52px 60px;background:white;border-radius:var(--r-md);border:1px solid var(--line);box-shadow:var(--shadow-lg)}.slide-page h1{font-size:28px;font-weight:700;color:var(--text);letter-spacing:-.5px;line-height:1.3;margin-bottom:16px}.slide-page h2{font-size:20px;font-weight:600;color:var(--text-2);margin-bottom:12px;margin-top:8px}.slide-page p{font-size:15px;color:var(--text-2);line-height:1.75;margin-bottom:8px}.field{display:grid;grid-gap:5px;gap:5px;margin-bottom:12px}.field label{font-size:12px;font-weight:500;color:var(--muted)}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r);padding:9px 12px;background:var(--panel-2);color:var(--text);font-size:13px;outline:none;transition:border-color .12s,box-shadow .12s,background .12s}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:white;box-shadow:0 0 0 3px rgba(99,102,241,.12)}.field textarea{min-height:110px;resize:vertical;line-height:1.6}input[type=file]{padding:7px 10px;font-size:12px;cursor:pointer}input[type=file]::-webkit-file-upload-button{height:26px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--panel);color:var(--text-2);font-size:12px;font-weight:500;cursor:pointer;margin-right:10px;-webkit-transition:background .12s;transition:background .12s}input[type=file]::file-selector-button{height:26px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--panel);color:var(--text-2);font-size:12px;font-weight:500;cursor:pointer;margin-right:10px;transition:background .12s}input[type=file]::-webkit-file-upload-button:hover{background:var(--panel-3)}input[type=file]::file-selector-button:hover{background:var(--panel-3)}.topbar select{height:32px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel-2);color:var(--text);font-size:13px;font-weight:500;cursor:pointer;outline:none;transition:border-color .12s,box-shadow .12s}.topbar select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(99,102,241,.12)}.stack{display:grid;grid-gap:8px;gap:8px}.image-row{border:1px solid var(--line);border-radius:var(--r);padding:10px 12px;background:var(--panel-2);font-size:13px;transition:border-color .12s,box-shadow .12s}.image-row:hover{border-color:var(--line-strong);box-shadow:var(--shadow-xs)}.image-row strong{display:block;font-weight:600;color:var(--text);margin-bottom:2px}.question-box{border:1px solid var(--line);border-radius:var(--r-md);padding:14px;background:var(--panel-2)}.question-box>strong{font-size:13px;font-weight:600;line-height:1.45;color:var(--text)}.question-options{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.question-options .button{height:30px;padding:0 12px;font-size:12px}.admin-card{border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;background:var(--panel);box-shadow:var(--shadow-sm)}.admin-card h3{font-size:14px;font-weight:600;color:var(--text);padding-bottom:12px;margin-bottom:16px;border-bottom:1px solid var(--line);letter-spacing:-.1px}.muted{color:var(--muted);font-size:13px}.msg-success{background:var(--success-light);color:#065f46}.msg-error,.msg-success{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:var(--r);font-size:12px;font-weight:500}.msg-error{background:var(--danger-light);color:#991b1b}.admin-layout{min-height:100vh;background:var(--bg)}.admin-topbar{display:flex;align-items:center;gap:8px;padding:0 24px;height:56px;background:var(--panel);border-bottom:1px solid var(--line);box-shadow:var(--shadow-xs)}.admin-content{max-width:1000px;margin:0 auto;padding:28px 24px;display:grid;grid-gap:16px;gap:16px}.admin-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.pwd-overlay{position:fixed;inset:0;background:rgba(15,23,42,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:grid;place-items:center;z-index:100;padding:20px}.pwd-dialog{width:min(380px,100%);background:var(--panel);border-radius:var(--r-xl);padding:28px;box-shadow:var(--shadow-xl)}.pwd-dialog h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:20px;letter-spacing:-.3px}.pwd-actions{display:flex;gap:8px;margin-top:16px}@keyframes spin{to{transform:rotate(1turn)}}.spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:white;border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.spinner.dark{border-color:rgba(99,102,241,.2);border-top-color:var(--brand)}.model-row{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel-2);font-size:13px}.model-row strong{font-weight:600;color:var(--text)}.model-row .muted{font-size:12px}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600;letter-spacing:.2px;background:var(--brand-light);color:var(--brand);border:1px solid var(--brand-border)}