/* ====== AI 业务体检 · Checkup Styles ====== */
:root {
  --bg-deep: #060b18;
  --bg-mid: #0b1120;
  --bg-surface: #111827;
  --card-bg: rgba(255,255,255,0.06);
  --card-bg-hover: rgba(255,255,255,0.10);
  --card-border: rgba(255,255,255,0.10);
  --card-border-hover: rgba(129,140,248,0.25);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: rgba(255,255,255,0.25);
  --accent: #818cf8;
  --accent2: #a78bfa;
  --accent3: #38bdf8;
  --green: #34d399;
  --pink: #f472b6;
  --red: #ef4444;
  --max-w: 720px;
  --r-lg: 2rem;
  --r-md: 1.25rem;
  --r-sm: 0.75rem;
  --font-mono: 'JetBrains Mono', monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Noto Sans SC',sans-serif;
  background:var(--bg-deep);
  color:var(--text-primary);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

/* Noise */
body::before{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:0.04;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  background-repeat:repeat;background-size:256px 256px;
}

.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

.gradient-text{
  background:linear-gradient(135deg,var(--text-primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

/* Header */
.header{padding:40px 0 20px;text-align:center}
.header h1{font-size:clamp(28px,4vw,38px);font-weight:700;margin-bottom:8px;letter-spacing:-0.02em}
.header p{font-size:14px;color:var(--text-secondary);max-width:560px;margin:0 auto;line-height:1.6}

/* Form Card */
.form-card{
  background:var(--card-bg);border:1px solid var(--card-border);
  border-radius:var(--r-lg);padding:36px 32px;margin-bottom:24px;
  position:relative;overflow:hidden;
}
.form-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.06),transparent)}

/* Section */
.section-title{
  font-size:16px;font-weight:600;color:var(--accent);
  margin-bottom:20px;padding-bottom:10px;
  border-bottom:1px solid var(--card-border);
  display:flex;align-items:center;gap:8px;
}

/* Form Controls */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}
.form-group .hint{font-size:11px;color:var(--text-muted);margin-top:4px}
.form-group .required{color:var(--pink);margin-left:2px}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea{
  width:100%;padding:10px 14px;
  background:var(--bg-surface);border:1px solid var(--card-border);
  border-radius:var(--r-sm);color:var(--text-primary);font-size:14px;
  font-family:inherit;transition:border-color 0.2s;
  outline:none;
}
input:focus, select:focus, textarea:focus{border-color:var(--accent)}
textarea{resize:vertical;min-height:64px}
select{appearance:none;cursor:pointer}
select option{background:var(--bg-deep);color:var(--text-primary)}

/* Checkbox & Radio */
.checkbox-group,.radio-group{display:flex;flex-direction:column;gap:8px}
.checkbox-label,.radio-label{
  display:flex;align-items:flex-start;gap:10px;
  padding:10px 14px;border-radius:var(--r-sm);
  border:1px solid var(--card-border);
  cursor:pointer;transition:all 0.2s;
  font-size:13px;color:var(--text-secondary);line-height:1.5;
}
.checkbox-label:hover,.radio-label:hover{border-color:rgba(129,140,248,0.2);background:rgba(129,140,248,0.04)}
.checkbox-label input,.radio-label input{display:none}
.checkbox-marker,.radio-marker{
  flex-shrink:0;width:18px;height:18px;border-radius:4px;
  border:2px solid var(--card-border);display:flex;align-items:center;justify-content:center;
  margin-top:1px;transition:all 0.2s;
}
.radio-marker{border-radius:50%}
.checkbox-label input:checked+.checkbox-marker{background:var(--accent);border-color:var(--accent)}
.checkbox-label input:checked+.checkbox-marker::after{content:'✓';color:#fff;font-size:11px;font-weight:700}
.radio-label input:checked+.radio-marker{background:var(--accent);border-color:var(--accent)}
.radio-label input:checked+.radio-marker::after{content:'•';color:#fff;font-size:16px;line-height:1}
.checkbox-label input:checked~span,.radio-label input:checked~span{color:var(--text-primary)}

/* Score Row */
.score-row{display:flex;gap:8px;align-items:center;margin-top:4px;flex-wrap:wrap}
.score-row label{font-size:12px;color:var(--text-muted);cursor:pointer;padding:4px 10px;border-radius:6px;border:1px solid var(--card-border);transition:all 0.2s;margin-bottom:0}
.score-row label:hover{border-color:var(--accent);color:var(--accent)}
.score-row input{display:none}
.score-row input:checked+label{background:rgba(129,140,248,0.12);border-color:var(--accent);color:var(--accent)}

/* Submit */
.submit-row{text-align:center;margin-top:12px}
.submit-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 48px;border-radius:40px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;font-size:16px;font-weight:600;
  border:none;cursor:pointer;transition:all 0.3s;
  box-shadow:0 4px 24px rgba(129,140,248,0.2);
  font-family:inherit;
}
.submit-btn:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(129,140,248,0.35)}
.submit-btn:disabled{opacity:0.5;cursor:not-allowed;transform:none}

/* Error */
.error-msg{color:var(--red);font-size:12px;margin-top:4px;display:none}
.form-group.invalid input,.form-group.invalid select{border-color:var(--red)}

/* Responsive */
@media(max-width:640px){
  .form-card{padding:24px 18px}
  .header{padding:28px 0 16px}
  .score-row{gap:4px}
  .score-row label{padding:3px 8px;font-size:11px}
}

/* Result Page */
.result-page{text-align:center;padding:60px 0}
.result-score{font-size:72px;font-weight:700;font-family:var(--font-mono);background:linear-gradient(135deg,var(--accent),#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin:20px 0 10px}
.result-label{font-size:18px;font-weight:600;margin-bottom:8px}
.result-level{display:inline-block;padding:4px 20px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:24px}
.level-high{background:rgba(52,211,153,0.15);color:var(--green);border:1px solid rgba(52,211,153,0.2)}
.level-medium{background:rgba(56,189,248,0.15);color:var(--accent3);border:1px solid rgba(56,189,248,0.2)}
.level-low{background:rgba(245,158,11,0.15);color:#f59e0b;border:1px solid rgba(245,158,11,0.2)}
.level-none{background:rgba(244,114,182,0.12);color:var(--pink);border:1px solid rgba(244,114,182,0.18)}
.result-next{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--r-md);padding:28px 24px;text-align:left;margin-top:24px}
.result-next h3{font-size:15px;font-weight:600;margin-bottom:12px}
.result-next ol{padding-left:20px;font-size:13px;color:var(--text-secondary);line-height:2}
.result-cta{display:inline-flex;align-items:center;gap:8px;margin-top:24px;padding:12px 32px;border-radius:40px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:15px;font-weight:600;text-decoration:none;transition:all 0.3s;box-shadow:0 4px 24px rgba(129,140,248,0.2)}
.result-cta:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(129,140,248,0.35)}

/* ========== THEME TOGGLE ========== */
.theme-toggle{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--card-border);
  background:var(--card-bg);color:var(--text-secondary);font-size:16px;line-height:1;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all 0.25s;padding:0;flex-shrink:0;
}
.theme-toggle:hover{background:var(--card-bg-hover);color:var(--text-primary);border-color:var(--card-border-hover);transform:rotate(15deg)}
[data-theme="light"] .theme-toggle{color:#f59e0b;border-color:rgba(245,158,11,0.25)}
[data-theme="light"] .theme-toggle:hover{border-color:#f59e0b;color:#d97706}
.theme-bar{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:16px}
.theme-bar .label{font-size:12px;color:var(--text-muted)}

/* ========== LIGHT THEME ========== */
[data-theme="light"] {
  --bg-deep: #f8fafc;
  --bg-mid: #f1f5f9;
  --bg-surface: #ffffff;
  --card-bg: #ffffff;
  --card-bg-hover: #f1f5f9;
  --card-border: rgba(0,0,0,0.08);
  --card-border-hover: rgba(99,102,241,0.20);
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: rgba(0,0,0,0.32);
  --accent: #6366f1;
  --accent2: #7c3aed;
  --accent3: #0284c7;
  --green: #059669;
  --pink: #db2777;
  --red: #dc2626;
}
[data-theme="light"] body {
  background: var(--bg-deep);
  color: var(--text-primary);
}
[data-theme="light"] body::before { opacity: 0.015; }
[data-theme="light"] .form-card::before {
  background: linear-gradient(90deg,transparent,rgba(255,255,255,0.5),transparent);
}
[data-theme="light"] select option {
  background: #ffffff;
  color: #1f2937;
}
[data-theme="light"] .score-row input:checked+label {
  background: rgba(99,102,241,0.10);
  border-color: var(--accent);
  color: var(--accent);
}
[data-theme="light"] .checkbox-label:hover,.radio-label:hover {
  border-color: rgba(99,102,241,0.15);
  background: rgba(99,102,241,0.03);
}