@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap";:root{--bg-color: #0a0b1e;--bg-gradient: radial-gradient(circle at top right, #1a1b3a, #0a0b1e);--card-bg: rgba(255, 255, 255, .05);--card-border: rgba(255, 255, 255, .1);--glass-blur: blur(12px);--primary-color: #6d28d9;--secondary-color: #06b6d4;--accent-gradient: linear-gradient(135deg, #6d28d9, #06b6d4);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--success: #10b981;--error: #ef4444;--warning: #f59e0b;--font-main: "Inter", "Noto Sans JP", sans-serif;--transition-smooth: all .3s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-main);background-color:var(--bg-color);background-image:var(--bg-gradient);color:var(--text-primary);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.glass-card{background:var(--card-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--card-border);border-radius:16px;box-shadow:0 8px 32px #0000005e}.admin-card{background:#1e293b80;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1.5rem}.btn-premium{padding:.75rem 1.5rem;border-radius:12px;border:none;font-weight:600;cursor:pointer;transition:var(--transition-smooth);background:var(--accent-gradient);color:#fff;text-align:center;text-decoration:none;display:flex;align-items:center;justify-content:center}.btn-premium:disabled{opacity:.6;cursor:not-allowed}.btn-premium:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 15px #6d28d966}.btn-text{background:none;border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;gap:.3rem;font-size:.9rem;transition:var(--transition-smooth)}.btn-text:hover{color:var(--text-primary)}.btn-outline-small{background:none;border:1px dashed var(--secondary-color);color:var(--secondary-color);padding:.4rem 1rem;border-radius:8px;cursor:pointer;font-size:.8rem;transition:var(--transition-smooth)}.btn-outline-small:hover{background:#06b6d41a}.btn-outline-large{padding:.75rem 2.5rem;border-radius:12px;border:1px solid var(--card-border);background:transparent;color:var(--text-primary);font-weight:600;cursor:pointer;transition:var(--transition-smooth)}.btn-outline-large:hover{background:#ffffff0d;border-color:var(--text-secondary)}.btn-icon-error{background:none;border:none;color:var(--error);cursor:pointer;opacity:.7;transition:var(--transition-smooth);display:flex;align-items:center}.btn-icon-error:hover{opacity:1;transform:scale(1.1)}.admin-layout{display:flex;min-height:100vh}.admin-sidebar{width:300px;border-right:1px solid var(--card-border);padding:3rem 2rem;display:flex;flex-direction:column}.admin-main{flex:1;padding:5rem;max-width:1200px}.sidebar-nav{flex:1;list-style:none;margin-top:4rem}.nav-item{margin-bottom:1.5rem;color:var(--text-secondary);font-weight:600;cursor:pointer;display:flex;align-items:center;gap:.8rem;font-size:1.1rem;transition:var(--transition-smooth)}.nav-item.active{color:var(--text-primary)}.nav-item.disabled{opacity:.4;cursor:not-allowed}.btn-logout{background:none;border:none;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;gap:.8rem;padding:1rem 0;font-weight:600;transition:var(--transition-smooth)}.btn-logout:hover{color:var(--error)}.gradient-text{background:var(--accent-gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.title-large{font-size:2.5rem;font-weight:800}.dashboard-header,.page-header-admin{margin-bottom:3rem;display:flex;justify-content:space-between;align-items:center}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(400px,1fr));gap:2rem}.book-card-admin{padding:2.5rem;display:flex;flex-direction:column;justify-content:space-between}.book-title-admin{font-size:1.5rem;margin-bottom:.5rem}.book-desc-admin{color:var(--text-secondary);font-size:1rem;line-height:1.5}.questions-grid-admin{display:grid;gap:1rem}.question-card-admin{padding:1.5rem 2.5rem;display:flex;justify-content:space-between;align-items:center}.question-meta-admin{font-size:.8rem;color:var(--text-muted);font-weight:600}.question-text-admin{margin-top:.4rem;font-size:1.3rem}.empty-state-admin{padding:4rem;text-align:center;border-style:dashed}.form-container-admin{padding:3.5rem;max-width:900px}.admin-form{display:grid;gap:2.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.form-group{display:grid;gap:.8rem}.form-group label{font-size:.9rem;font-weight:600}.form-input,.form-select,.form-textarea{background:#ffffff0d;border:1px solid var(--card-border);padding:1rem;border-radius:12px;color:var(--text-primary);font-family:inherit;font-size:1rem;transition:var(--transition-smooth)}.form-input.disabled{color:var(--text-muted);font-weight:700}.form-select{background-color:#1a1b3a}.form-textarea.large-text{font-size:1.1rem;line-height:1.5}.options-section{display:grid;gap:1.2rem}.options-header{display:flex;justify-content:space-between;align-items:center}.options-list{display:grid;gap:1rem}.option-row{display:flex;gap:1rem;align-items:center}.option-checkbox{width:24px;height:24px;accent-color:var(--success)}.form-actions-admin{display:flex;gap:1rem;margin-top:2rem}.login-page{height:100vh;display:flex;align-items:center;justify-content:center}.login-card{padding:3.5rem;width:100%;max-width:450px}.login-header{text-align:center;margin-bottom:3rem}.login-header h1{font-size:2.5rem;font-weight:800;margin-bottom:.5rem}.login-form{display:grid;gap:1.5rem}.input-with-icon{position:relative}.input-icon{position:absolute;left:1rem;top:1rem;color:var(--text-muted)}.form-input.with-icon{padding-left:3rem}.error-text{color:var(--error);font-size:.9rem;text-align:center}.flex-center-gap{display:flex;align-items:center;gap:.5rem}.self-start{align-self:flex-start}.flex-1{flex:1}.small-text{font-size:.9rem}