:root{--font-family:ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI Variable Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--bg-color:#f1f5f9;--bg-gradient:radial-gradient(ellipse at 70% 20%, #0d948812 0%, #f1f5f9 60%);--text-primary:#0f172a;--text-secondary:#64748b;--primary-color:#0d9488;--primary-hover:#0f766e;--primary-text:#fff;--surface-bg:#fff;--surface-border:#e2e8f0;--surface-shadow:0 1px 3px #0000000d, 0 4px 16px #0000000a;--input-bg:#f8fafc;--input-border:#cbd5e1;--input-focus:#0d9488;--error-color:#dc2626;--success-color:#059669}[data-theme=light]{--bg-color:#f1f5f9;--bg-gradient:radial-gradient(ellipse at 70% 20%, #0d948812 0%, #f1f5f9 60%);--text-primary:#0f172a;--text-secondary:#64748b;--primary-color:#0d9488;--primary-hover:#0f766e;--primary-text:#fff;--surface-bg:#fff;--surface-border:#e2e8f0;--surface-shadow:0 1px 3px #0000000d, 0 4px 16px #0000000a;--input-bg:#f8fafc;--input-border:#cbd5e1;--input-focus:#0d9488;--error-color:#dc2626;--success-color:#059669}[data-theme=dark]{--bg-color:#0d1117;--bg-gradient:radial-gradient(ellipse at 70% 20%, #0d948817 0%, #0d1117 55%);--text-primary:#e2e8f0;--text-secondary:#94a3b8;--primary-color:#0d9488;--primary-hover:#0f766e;--primary-text:#fff;--surface-bg:#161b22;--surface-border:#ffffff14;--surface-shadow:0 4px 24px #00000080;--input-bg:#0d1117;--input-border:#ffffff1f;--input-focus:#0d9488;--error-color:#f87171;--success-color:#34d399}html,body,#root{min-height:100vh;font-family:var(--font-family);background:var(--bg-gradient);background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-attachment:fixed;margin:0;transition:background-color .3s,color .3s}*{box-sizing:border-box}.page{max-width:1200px;margin:0 auto;padding:32px 24px}.admin-page{max-width:1800px;margin:0 auto;padding:32px 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h2{letter-spacing:-.02em;margin-top:0;margin-bottom:24px;font-size:1.2rem;font-weight:700}.stack{flex-direction:column;gap:16px;display:flex}.field{color:var(--text-secondary);flex-direction:column;gap:6px;font-size:.875rem;font-weight:600;display:flex}input,select{border:1px solid var(--input-border);background:var(--input-bg);color:var(--text-primary);border-radius:10px;outline:none;padding:10px 14px;font-family:inherit;font-size:.95rem;transition:border-color .15s,box-shadow .15s}input:focus,select:focus{border-color:var(--input-focus);box-shadow:0 0 0 3px color-mix(in srgb, var(--input-focus) 16%, transparent)}.btn{background:var(--primary-color);color:var(--primary-text);cursor:pointer;border:none;border-radius:10px;padding:10px 20px;font-family:inherit;font-size:.9rem;font-weight:600;transition:background-color .15s,transform .1s,box-shadow .15s;box-shadow:0 2px 6px #0000001a}.btn:hover{background:var(--primary-hover);box-shadow:0 4px 12px 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transparent)}.header-actions{justify-content:space-between;align-items:flex-start;margin-bottom:24px;display:flex}.coach-selector{gap:8px;margin-bottom:20px;padding-bottom:10px;display:flex;overflow-x:auto}.coach-btn{background:var(--input-bg);color:var(--text-primary);border:1px solid var(--surface-border);white-space:nowrap;box-shadow:none;cursor:pointer;border-radius:8px;padding:8px 16px;font-family:inherit;font-size:.875rem;transition:background-color .15s,border-color .15s}.coach-btn.active{background:var(--primary-color);color:var(--primary-text);border-color:var(--primary-color);font-weight:600}.seat-grid{border:1px solid var(--surface-border);background:var(--input-bg);border-radius:12px;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:10px;margin-bottom:24px;padding:18px;display:grid}.seat-btn{background:var(--surface-bg);color:var(--text-primary);border:1px solid 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