/* Huaxi AI Requirement Platform — modern enterprise workspace */
:root {
    --bg: #f7f9fd;
    --bg-deep: #eef2f8;
    --card-bg: #fff;
    --surface: #fff;
    --surface-soft: #f7f9fc;
    --primary: #4f63f5;
    --primary-hover: #3d50df;
    --primary-strong: #3043c7;
    --primary-light: #e9edff;
    --primary-bg: #f3f5ff;
    --success: #0ea978;
    --success-light: #dcf9ed;
    --warning: #e38a0a;
    --warning-light: #fff1cf;
    --danger: #d3414b;
    --danger-light: #ffe7e9;
    --text: #172033;
    --text-primary: #172033;
    --text-secondary: #5c6981;
    --text-muted: #8e99ad;
    --border: #dfe5ef;
    --border-light: #edf1f6;
    --user-bubble: linear-gradient(135deg,#6176ff,#4359e8);
    --user-bubble-text: #fff;
    --ai-bubble: #fff;
    --ai-bubble-border: #e3e8f1;
    --shadow-sm: 0 1px 2px rgba(23,32,51,.04),0 3px 10px rgba(23,32,51,.03);
    --shadow: 0 10px 32px rgba(31,48,84,.07),0 2px 8px rgba(31,48,84,.04);
    --shadow-md: 0 16px 42px rgba(31,48,84,.12),0 4px 12px rgba(31,48,84,.06);
    --shadow-lg: 0 26px 70px rgba(20,36,70,.18),0 8px 24px rgba(20,36,70,.08);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --font: Inter,"SF Pro Display","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    --font-mono: "SFMono-Regular",Consolas,"Liberation Mono",monospace;
    --transition: .18s cubic-bezier(.2,.8,.2,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
html{background:var(--bg);scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::selection{background:#dce5ff;color:var(--primary-strong)}
button,input,textarea,select{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
h1{font-size:26px;font-weight:730;letter-spacing:-.035em;line-height:1.25}
h2{font-size:19px;font-weight:700;letter-spacing:-.02em}
h3{font-size:15px;font-weight:650}

.btn{min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 17px;border:1px solid transparent;border-radius:11px;font-size:13px;font-weight:620;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition),color var(--transition);text-decoration:none;white-space:nowrap}
.btn:hover:not(:disabled){transform:translateY(-1px)}
.btn:active:not(:disabled){transform:translateY(0)}
.btn:focus-visible,.input:focus-visible,.send-btn:focus-visible,.admin-tab:focus-visible{outline:3px solid rgba(79,99,245,.2);outline-offset:2px}
.btn:disabled{opacity:.48;cursor:not-allowed;box-shadow:none}
.btn-primary{color:#fff;background:linear-gradient(135deg,#6176ff,#465bea);box-shadow:0 7px 18px rgba(79,99,245,.24)}
.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#5267f3,#384bd5);box-shadow:0 10px 22px rgba(79,99,245,.3)}
.btn-outline{color:var(--text-secondary);background:rgba(255,255,255,.78);border-color:var(--border);box-shadow:0 1px 2px rgba(23,32,51,.02)}
.btn-outline:hover:not(:disabled){color:var(--primary);border-color:#bdc9f5;background:var(--primary-bg)}
.btn-danger{color:#fff;background:var(--danger);box-shadow:0 7px 18px rgba(211,65,75,.18)}
.btn-sm{min-height:34px;padding:6px 12px;font-size:12px;border-radius:9px}
.btn-lg{min-height:50px;padding:13px 24px;font-size:15px;border-radius:13px}

.input{width:100%;min-height:44px;padding:10px 13px;border:1px solid var(--border);border-radius:11px;color:var(--text);background:rgba(255,255,255,.9);outline:none;transition:border-color var(--transition),box-shadow var(--transition),background var(--transition)}
.input:hover:not(:disabled){border-color:#cbd4e2}
.input:focus{border-color:#9ca9ff;background:#fff;box-shadow:0 0 0 4px rgba(79,99,245,.09)}
.input::placeholder{color:#a5afbf}
textarea.input{padding:14px;resize:vertical;line-height:1.7}
select.input{cursor:pointer}
label{display:block;margin-bottom:7px;color:var(--text-secondary);font-size:12px;font-weight:650;letter-spacing:.01em}
.form-group{margin-bottom:18px}
input[type="checkbox"]{width:16px;height:16px;accent-color:var(--primary);cursor:pointer}

.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}

/* Landing / authentication */
.login-page{min-height:100vh;display:grid;place-items:center;padding:32px;background-color:#fafbff;background-image:
radial-gradient(circle at 14% 18%,rgba(79,99,245,.16),transparent 31%),
radial-gradient(circle at 89% 82%,rgba(16,185,129,.11),transparent 28%),
linear-gradient(rgba(79,99,245,.025) 1px,transparent 1px),
linear-gradient(90deg,rgba(79,99,245,.025) 1px,transparent 1px);background-size:auto,auto,30px 30px,30px 30px;position:relative;overflow:hidden}
.login-page::before,.login-page::after{content:"";position:fixed;border:1px solid rgba(80,110,190,.08);border-radius:50%;pointer-events:none}
.login-page::before{width:540px;height:540px;left:-270px;bottom:-300px}
.login-page::after{width:380px;height:380px;right:-170px;top:-180px}
.login-card{width:100%;max-width:460px;padding:42px 44px;border-color:#e1e6f0;box-shadow:0 34px 90px rgba(36,58,105,.13),0 4px 20px rgba(36,58,105,.05);position:relative;z-index:1}
.login-card::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,#5268f5,#8b5cf6,#14b8a6,#f59e0b);border-radius:18px 18px 0 0}
.login-card .logo-area{text-align:center;margin-bottom:30px}
.login-card .logo-icon{width:60px;height:60px;margin-bottom:17px;border-radius:17px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:23px;font-weight:760;background:linear-gradient(145deg,#6579ff,#4257e4);box-shadow:0 14px 30px rgba(79,99,245,.26)}
.login-card h1{font-size:27px}
.login-card .subtitle{margin-top:7px;color:var(--text-secondary);font-size:13px}
.login-card .admin-tabs{margin-left:0!important;margin-right:0!important;border-radius:12px;padding:4px!important;background:#f1f4f9;border:0}
.login-card .admin-tab{flex:1;padding:9px 12px;border:0;border-radius:9px}
.login-card .admin-tab.active{color:var(--primary);background:#fff;box-shadow:0 3px 10px rgba(31,48,84,.08)}
.login-card .btn{width:100%}
.login-card .admin-link{margin-top:24px;padding-top:20px;text-align:center;border-top:1px solid var(--border-light);font-size:12px;color:var(--text-muted)}
.login-card .admin-link a{color:var(--text-secondary);text-decoration:none;font-weight:600}
.login-card .admin-link a:hover{color:var(--primary)}

/* Shared top navigation */
.admin-page{min-height:100vh;background-color:var(--bg);background-image:radial-gradient(circle at 95% 0,rgba(79,99,245,.08),transparent 24%),radial-gradient(circle at 2% 85%,rgba(20,184,166,.06),transparent 22%)}
.admin-header,.chat-header{height:68px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.94);border-bottom:1px solid var(--border);box-shadow:0 7px 26px rgba(51,70,112,.04);backdrop-filter:blur(16px) saturate(135%);position:relative;z-index:20}
.admin-header{position:sticky;top:0}
.admin-header h1{font-size:18px;letter-spacing:-.02em}
.admin-header>div,.admin-header>div:last-child{display:flex;align-items:center;gap:10px}
.admin-content{width:min(1420px,100%);margin:0 auto;padding:30px 28px 48px}
.admin-tabs{display:flex;gap:7px;padding:9px 28px;background:#fff;border-bottom:1px solid var(--border)}
.admin-tab{padding:9px 16px;border:0;border-radius:9px;color:var(--text-secondary);background:transparent;font-size:13px;font-weight:620;cursor:pointer;transition:all var(--transition)}
.admin-tab:hover{color:var(--text);background:var(--surface-soft)}
.admin-tab.active{color:var(--primary);background:var(--primary-light);box-shadow:inset 0 0 0 1px rgba(79,99,245,.1)}
.admin-login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% -10%,rgba(117,147,223,.2),transparent 38%),var(--bg)}
.admin-login-card{width:100%;max-width:400px;padding:38px;box-shadow:var(--shadow-lg)}

/* Dashboard */
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(170px,1fr));gap:16px}
.stat-card{min-height:126px;padding:22px 22px 19px;background:linear-gradient(145deg,#f5f0ff,#fff);border:1px solid #e6dcff;border-top:4px solid #8b5cf6;border-radius:16px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.stat-card::after{content:"";position:absolute;width:70px;height:70px;right:-24px;top:-24px;border-radius:50%;background:rgba(139,92,246,.12)}
.stat-card.primary{background:linear-gradient(145deg,#edf1ff,#fff);border-color:#dbe1ff;border-top-color:var(--primary)}
.stat-card.primary::after{background:rgba(79,99,245,.12)}
.stat-card.success{background:linear-gradient(145deg,#eafaf4,#fff);border-color:#cfefe3;border-top-color:#14b88a}
.stat-card.success::after{background:rgba(20,184,138,.12)}
.stat-card.warning{background:linear-gradient(145deg,#fff6df,#fff);border-color:#f5e2b4;border-top-color:#f59e0b}
.stat-card.warning::after{background:rgba(245,158,11,.13)}
.stat-card .stat-value{font-family:var(--font-mono);font-size:31px;font-weight:760;letter-spacing:-.05em;line-height:1.15}
.stat-card .stat-label{margin-top:12px;color:var(--text-secondary);font-size:12px;font-weight:600}
.stat-card.primary .stat-value{color:var(--primary)}
.stat-card.success .stat-value{color:var(--success)}
.stat-card.warning .stat-value{color:var(--warning)}
.table-container{overflow:auto;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-sm)}
.data-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0}
.data-table th{padding:13px 15px;text-align:left;color:#77839a;background:#f7f9fc;border-bottom:1px solid var(--border);font-size:11px;font-weight:720;letter-spacing:.045em;text-transform:uppercase;white-space:nowrap}
.data-table td{padding:13px 15px;border-bottom:1px solid var(--border-light);font-size:13px;vertical-align:middle}
.data-table tbody tr{transition:background var(--transition)}
.data-table tbody tr:hover{background:#f8faff}
.data-table tr:last-child td{border-bottom:0}
.data-table .actions{display:flex;gap:6px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;font-size:11px;font-weight:650;line-height:1.2}
.badge-active{color:#087457;background:var(--success-light)}
.badge-completed{color:#58657a;background:#edf1f6}
.badge-evaluated{color:#294bb9;background:var(--primary-light)}
.pagination{display:flex;align-items:center;justify-content:center;gap:9px;padding:19px}

/* Chat workspace */
.chat-page{height:100vh;display:flex;flex-direction:column;background:var(--bg)}
.chat-header{flex:none;height:68px}
.chat-header .header-left{display:flex;align-items:center;gap:12px}
.chat-header .header-left>span{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(145deg,#6579ff,#4358e5);box-shadow:0 8px 20px rgba(79,99,245,.22);font-size:18px!important}
.chat-header .header-title{font-size:15px;font-weight:700;letter-spacing:-.01em}
.chat-header .header-subtitle{font-size:11px;color:var(--text-muted);margin-top:1px}
.chat-header .header-actions{display:flex;gap:7px}
.chat-body{flex:1;display:flex;min-height:0}
.chat-sidebar{width:268px;flex:none;padding:24px 18px 18px;background:#fff;border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:auto}
.sidebar-section{margin-bottom:24px}
.sidebar-section h3{margin:0 8px 12px;color:var(--text-muted);font-size:10px;font-weight:760;letter-spacing:.11em;text-transform:uppercase}
.stage-list{list-style:none}
.stage-item{display:flex;align-items:flex-start;gap:11px;padding:10px 9px;border-radius:11px;position:relative;transition:background var(--transition)}
.stage-item+.stage-item{margin-top:2px}
.stage-item.active{background:var(--primary-bg)}
.stage-dot{width:27px;height:27px;flex:none;display:grid;place-items:center;border-radius:9px;color:var(--text-muted);background:#eef2f7;font-size:11px;font-weight:720;transition:all var(--transition)}
.stage-item.active .stage-dot{color:#fff;background:var(--primary);box-shadow:0 6px 15px rgba(79,99,245,.23)}
.stage-item.done .stage-dot{color:#fff;background:var(--success)}
.stage-info{min-width:0}
.stage-name{font-size:12px;font-weight:650}
.stage-item.active .stage-name{color:var(--primary)}
.stage-item.done .stage-name{color:#168567}
.stage-desc{margin-top:1px;color:var(--text-muted);font-size:10px}
.user-info-card{margin-top:auto;padding:14px;border:1px solid #cfece8;border-radius:13px;background:linear-gradient(145deg,#edfbf8,#f7fffd);box-shadow:inset 4px 0 0 #14b8a6}
.user-info-card .info-row{font-size:11px;color:var(--text-secondary)}
.user-info-card .info-row+.info-row{margin-top:5px}
.user-info-card .info-row strong{color:var(--text)}
.chat-main{min-width:0;flex:1;display:flex;flex-direction:column;background-color:#f8f9fd;background-image:radial-gradient(circle at 50% 8%,rgba(79,99,245,.075),transparent 34%),linear-gradient(rgba(79,99,245,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(79,99,245,.018) 1px,transparent 1px);background-size:auto,34px 34px,34px 34px}
.chat-messages{width:min(920px,100%);margin:0 auto;flex:1;overflow:auto;padding:32px 34px;display:flex;flex-direction:column;gap:20px;scrollbar-gutter:stable}
.chat-messages .empty-state{flex:1;display:grid;place-items:center;align-content:center;color:var(--text-muted);text-align:center}
.chat-messages .empty-state .icon{width:58px;height:58px;margin-bottom:12px;display:grid;place-items:center;border-radius:18px;background:#fff;box-shadow:var(--shadow);font-size:26px}
.message{display:flex;gap:11px;max-width:82%;animation:messageIn .28s ease both}
.message.user{align-self:flex-end;flex-direction:row-reverse}
.message.assistant{align-self:flex-start}
@keyframes messageIn{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.message .avatar{width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:11px;font-size:15px}
.message.assistant .avatar{color:#fff;background:linear-gradient(145deg,#687cff,#465be7);box-shadow:0 7px 16px rgba(79,99,245,.2)}
.message.user .avatar{background:#dfe6ff}
.message .bubble{padding:12px 15px;border-radius:15px;font-size:13px;line-height:1.75;white-space:pre-wrap;word-break:break-word}
.message.assistant .bubble{background:var(--ai-bubble);border:1px solid var(--ai-bubble-border);border-top-left-radius:5px;box-shadow:var(--shadow-sm)}
.message.user .bubble{color:var(--user-bubble-text);background:var(--user-bubble);border-top-right-radius:5px;box-shadow:0 7px 18px rgba(79,99,245,.18)}
.message .time{margin-top:4px;color:var(--text-muted);font-size:10px}
.message.user .time{text-align:right}
.typing-indicator{width:min(920px,100%);margin:0 auto;padding:0 34px 8px 79px;display:flex;align-items:center;gap:9px}
.typing-dots{display:flex;gap:4px}
.typing-dots span{width:6px;height:6px;border-radius:50%;background:#8190ab;animation:typingBounce 1.3s infinite ease-in-out}
.typing-dots span:nth-child(2){animation-delay:.16s}.typing-dots span:nth-child(3){animation-delay:.32s}
@keyframes typingBounce{0%,80%,100%{transform:scale(.65);opacity:.35}40%{transform:scale(1);opacity:1}}
.chat-input-area{flex:none;padding:16px 24px 20px;background:rgba(255,255,255,.94);border-top:1px solid var(--border);backdrop-filter:blur(14px)}
.chat-input-row{width:min(920px,100%);margin:0 auto;display:flex;align-items:flex-end;gap:10px;padding:6px 7px 6px 16px;border:1px solid var(--border);border-radius:17px;background:#fff;box-shadow:0 10px 28px rgba(31,48,84,.08);transition:border-color var(--transition),box-shadow var(--transition)}
.chat-input-row:focus-within{border-color:#aab5ff;box-shadow:0 12px 30px rgba(79,99,245,.1),0 0 0 4px rgba(79,99,245,.06)}
.chat-input-row textarea{min-height:42px;max-height:140px;flex:1;padding:10px 0;border:0;outline:0;resize:none;background:transparent;color:var(--text);font-size:13px;line-height:1.6}
.chat-input-row textarea::placeholder{color:#9ca7b9}
.chat-input-row .send-btn{width:42px;height:42px;flex:none;display:grid;place-items:center;border:0;border-radius:13px;color:#fff;background:linear-gradient(145deg,#6478ff,#4358e4);font-size:16px;cursor:pointer;box-shadow:0 7px 16px rgba(79,99,245,.24);transition:all var(--transition)}
.chat-input-row .send-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 9px 20px rgba(79,99,245,.3)}
.chat-input-row .send-btn:disabled{background:#d5dbe6;box-shadow:none;cursor:not-allowed}

/* Profile and feedback surfaces */
.profile-hero{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 26px;margin-bottom:26px;background:linear-gradient(135deg,#e9edff,#f6f7ff 62%,#fff);color:#263aa9;border:1px solid #d7deff;border-left:5px solid var(--primary);box-shadow:0 16px 38px rgba(79,99,245,.1)}
.profile-hero p{color:#6673a7;font-size:12px;margin-top:4px}
.section-heading{display:flex;align-items:end;justify-content:space-between;margin:0 2px 14px}
.section-heading h2{font-size:17px}
.history-card{padding:17px 19px!important;margin-bottom:10px!important;border-radius:14px!important;border-left:4px solid var(--primary)!important;box-shadow:none!important;transition:transform var(--transition),border-color var(--transition),box-shadow var(--transition)}
.history-card:nth-child(3n+2){border-left-color:#14b8a6!important}
.history-card:nth-child(3n+3){border-left-color:#f59e0b!important}
.history-card:hover{transform:translateY(-1px);border-color:#cbd6f5;box-shadow:var(--shadow-sm)!important}
.feedback-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.feedback-card{padding:26px}
.feedback-card:first-child{background:#fff;border-color:#dbe1ff}
.feedback-card:nth-child(2){grid-column:1/-1;background:linear-gradient(145deg,#edfbf6,#fff 68%);border-color:#d2f0e4}
.system-feedback-card{grid-column:1/-1}
.feedback-card h2{display:flex;align-items:center;gap:9px}
.feedback-card .card-kicker{margin-bottom:18px;color:var(--text-muted);font-size:12px}
#systemFeedback{min-height:150px}
.feedback-loading{min-height:170px;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--text-muted);font-size:13px;background:#f8f9fd;border:1px solid var(--border-light);border-radius:15px}
.system-feedback-intro{display:flex;align-items:center;gap:14px;padding:16px 18px;margin-bottom:14px;color:#273aab;background:linear-gradient(135deg,#edf0ff,#f8f9ff);border:1px solid #dce2ff;border-radius:15px}
.feedback-intro-icon{width:42px;height:42px;flex:none;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#6377ff,#4358e5);border-radius:13px;font-size:12px;font-weight:800;box-shadow:0 8px 18px rgba(79,99,245,.2)}
.feedback-intro-label{display:block;margin-bottom:2px;color:#7180c3;font-size:10px;font-weight:750;letter-spacing:.1em;text-transform:uppercase}
.system-feedback-intro p{font-size:15px;font-weight:700;line-height:1.5}
.feedback-section-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.feedback-module{--module-accent:#4f63f5;--module-soft:#f0f2ff;--module-border:#dce2ff;padding:20px;background:linear-gradient(145deg,var(--module-soft),#fff 64%);border:1px solid var(--module-border);border-top:4px solid var(--module-accent);border-radius:15px;box-shadow:0 4px 16px rgba(31,48,84,.035)}
.feedback-module.summary{grid-column:1/-1;--module-accent:#4f63f5;--module-soft:#f0f2ff;--module-border:#dce2ff}
.feedback-module.materials{--module-accent:#f59e0b;--module-soft:#fff8e8;--module-border:#f5e2b7}
.feedback-module.next{--module-accent:#11a879;--module-soft:#edfaf5;--module-border:#d0eee3}
.feedback-module.other{--module-accent:#8b5cf6;--module-soft:#f6f1ff;--module-border:#e8dcff}
.feedback-module-header{display:flex;align-items:center;gap:11px;margin-bottom:15px}
.feedback-module-icon{width:34px;height:34px;flex:none;display:grid;place-items:center;color:var(--module-accent);background:#fff;border:1px solid var(--module-border);border-radius:10px;font-size:15px;font-weight:800;box-shadow:0 3px 10px rgba(31,48,84,.05)}
.feedback-module-eyebrow{display:block;color:var(--module-accent);font-size:9px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.feedback-module-header h3{margin-top:1px;color:var(--text);font-size:15px}
.feedback-module-content{color:#465269;font-size:13px;line-height:1.8}
.feedback-paragraph+.feedback-paragraph{margin-top:9px}
.feedback-subheading{margin:12px 0 7px;color:var(--text);font-weight:700}
.feedback-action-item{display:flex;align-items:flex-start;gap:10px;padding:9px 0}
.feedback-action-item+.feedback-action-item{border-top:1px solid color-mix(in srgb,var(--module-border) 72%,transparent)}
.feedback-item-number{width:24px;height:24px;flex:none;display:grid;place-items:center;margin-top:1px;color:#fff;background:var(--module-accent);border-radius:8px;font-family:var(--font-mono);font-size:10px;font-weight:750}
.feedback-action-item p{flex:1}
.feedback-empty{min-height:170px;display:grid;place-items:center;align-content:center;text-align:center;color:var(--text-muted);background:#f8f9fd;border:1px dashed var(--border);border-radius:15px}
.feedback-empty>span{width:38px;height:38px;display:grid;place-items:center;margin-bottom:8px;color:var(--primary);background:var(--primary-light);border-radius:12px;font-size:18px;font-weight:800}
.feedback-empty strong{color:var(--text-secondary);font-size:14px}.feedback-empty p{margin-top:3px;font-size:11px}.feedback-empty.error>span{color:var(--danger);background:var(--danger-light)}

/* Modal, toast, loading */
.modal-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(15,26,48,.46);backdrop-filter:blur(8px);animation:fadeIn .16s ease}
.modal{width:min(700px,100%);max-height:84vh;display:flex;flex-direction:column;overflow:hidden;background:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.8);border-radius:20px;box-shadow:var(--shadow-lg);backdrop-filter:blur(26px) saturate(145%);animation:slideUp .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes slideUp{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
.modal-header{padding:17px 21px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-light)}
.modal-header h2{font-size:16px}
.modal-close{width:32px;height:32px;display:grid;place-items:center;border:0;border-radius:9px;color:var(--text-muted);background:transparent;cursor:pointer;font-size:17px}
.modal-close:hover{color:var(--text);background:var(--surface-soft)}
.modal-body{flex:1;overflow:auto;padding:22px}
.modal-body .chat-replay{display:flex;flex-direction:column;gap:12px}
.toast-container{position:fixed;right:20px;top:20px;z-index:200;display:flex;flex-direction:column;gap:8px}
.toast{max-width:380px;padding:12px 16px;border:1px solid;border-radius:12px;font-size:12px;font-weight:620;box-shadow:var(--shadow-md);animation:toastIn .25s ease;background:#fff}
.toast-error{color:#a92c37;border-color:#fac8cd;background:#fff5f6}.toast-success{color:#087457;border-color:#bcebdc;background:#f2fcf8}.toast-info{color:#294bb9;border-color:#ccd6fa;background:#f5f7ff}
@keyframes toastIn{from{opacity:0;transform:translateX(18px)}to{opacity:1;transform:none}}
.spinner{width:19px;height:19px;border:2px solid #dbe1eb;border-top-color:var(--primary);border-radius:50%;animation:spin .75s linear infinite;display:inline-block;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}

@media (max-width:960px){
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .feedback-grid{grid-template-columns:1fr}
    .feedback-section-grid{grid-template-columns:1fr}
    .feedback-module.summary{grid-column:auto}
    .chat-sidebar{width:230px}
}
@media (max-width:760px){
    .login-page{padding:16px}.login-card{padding:34px 24px}
    .admin-header,.chat-header{height:auto;min-height:62px;padding:11px 16px;gap:10px;flex-wrap:wrap}
    .admin-header>div:last-child{flex-wrap:wrap;justify-content:flex-end}
    .admin-tabs{padding:8px 14px;overflow:auto}
    .admin-content{padding:20px 14px 36px}
    .chat-sidebar{display:none}
    .chat-header .header-actions .btn span{display:none}
    .chat-header .header-actions .btn{padding:7px 9px}
    .chat-messages{padding:22px 14px}.message{max-width:94%}.message .avatar{width:30px;height:30px}
    .typing-indicator{padding-left:55px}.chat-input-area{padding:12px}.chat-input-row{border-radius:15px}
    .stats-grid{gap:10px}.stat-card{min-height:105px;padding:17px}.stat-card .stat-value{font-size:26px}
    .profile-hero{align-items:flex-start;flex-direction:column;padding:21px}
    .feedback-card{padding:20px}
    .data-table th,.data-table td{padding:11px 12px}
}
@media (max-width:430px){
    .stats-grid{grid-template-columns:1fr 1fr}
    .login-card h1{font-size:24px}
    .admin-header h1{font-size:16px}
    .modal-overlay{padding:10px}.modal{border-radius:16px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}