:root{--color-bg: #0f0f13;--color-surface: #1a1a24;--color-surface-hover: #252535;--color-text: #e8e8f0;--color-text-muted: #8888a0;--color-accent: #7c5cfc;--color-accent-hover: #9b7fff;--color-danger: #fc5c7c;--color-border: #2a2a3a;--font-sans: "Hiragino Sans", "Noto Sans JP", system-ui, -apple-system, sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.7;min-height:100vh}a{color:var(--color-accent);text-decoration:none;transition:color .2s}a:hover{color:var(--color-accent-hover)}.admin-layout{min-height:100vh}.admin-loading,.admin-unauthorized{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;color:var(--color-text-muted)}.spinner{width:2rem;height:2rem;border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:1rem}@keyframes spin{to{transform:rotate(360deg)}}.error-card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:1rem;padding:3rem;text-align:center;max-width:440px}.error-card h2{margin-bottom:1rem}.error-card p{color:var(--color-text-muted);margin-bottom:1.5rem}.admin-content{display:flex;min-height:100vh}.sidebar{width:240px;background-color:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;overflow-y:auto}.sidebar-header{padding:1.25rem 1rem;border-bottom:1px solid var(--color-border)}.sidebar-logo{font-size:1.1rem;font-weight:700;color:var(--color-text)}.sidebar-logo:hover{color:var(--color-accent)}.sidebar-nav{flex:1;padding:.5rem}.sidebar-link{display:flex;align-items:center;gap:.5rem;padding:.65rem 1rem;border-radius:.5rem;color:var(--color-text-muted);font-size:.9rem;transition:background-color .15s,color .15s;margin-bottom:.25rem}.sidebar-link:hover{background-color:var(--color-surface-hover);color:var(--color-text)}.sidebar-link.active{background-color:var(--color-accent);color:#fff}.sidebar-icon{font-size:1.1rem}.sidebar-footer{padding:.5rem;border-top:1px solid var(--color-border)}.main-content{flex:1;margin-left:240px;padding:2rem;max-width:1200px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.25rem;border-radius:.5rem;font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:background-color .2s,transform .1s}.btn:active{transform:scale(.98)}.btn-primary{background-color:var(--color-accent);color:#fff}.btn-primary:hover{background-color:var(--color-accent-hover)}.btn-outline{background-color:transparent;color:var(--color-text);border:1px solid var(--color-border)}.btn-outline:hover{background-color:var(--color-surface-hover)}.btn-danger{background-color:var(--color-danger);color:#fff}.btn-danger:hover{opacity:.9}.btn-sm{padding:.4rem .75rem;font-size:.8rem}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem}.page-header h1{font-size:1.5rem}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:.75rem;padding:1.5rem;margin-bottom:1rem}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.75rem 1rem;border-bottom:1px solid var(--color-border);font-size:.9rem}th{color:var(--color-text-muted);font-weight:600;font-size:.8rem;text-transform:uppercase}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.85rem;color:var(--color-text-muted);margin-bottom:.35rem}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.65rem;background-color:var(--color-bg);color:var(--color-text);border:1px solid var(--color-border);border-radius:.5rem;font-size:.9rem;font-family:var(--font-sans)}.form-group textarea{min-height:200px;resize:vertical}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--color-accent)}.badge{display:inline-block;padding:.2rem .6rem;border-radius:1rem;font-size:.75rem;font-weight:600}.badge-draft{background-color:#3a3a4a;color:var(--color-text-muted)}.badge-published{background-color:#1a4a2a;color:#4cfc7c}@media(max-width:768px){.sidebar{display:none}.main-content{margin-left:0}}