*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#f5f5f5;color:#1a1a1a;line-height:1.5}
a{color:#3b82f6;text-decoration:none}
a:hover{text-decoration:underline}

.navbar{background:#1a1a1a;color:#fff;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;height:52px}
.navbar .logo{color:#fff;font-weight:700;font-size:1.1rem}
.navbar .logo:hover{text-decoration:none}
.nav-links a{color:#ccc;margin-left:1.5rem;font-size:.9rem}
.nav-links a:hover{color:#fff;text-decoration:none}

.container{max-width:960px;margin:0 auto;padding:1.5rem}

/* Login */
.login-box{max-width:320px;margin:4rem auto;background:#fff;padding:2rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.login-box h1{font-size:1.3rem;margin-bottom:1rem}
.login-box input{width:100%;padding:.6rem;border:1px solid #ddd;border-radius:4px;margin-bottom:.8rem;font-size:.95rem}
.login-box button{width:100%;padding:.6rem;background:#3b82f6;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.95rem}
.login-box button:hover{background:#2563eb}
.error{color:#ef4444;margin-bottom:.8rem;font-size:.9rem}

/* Admin */
.admin-page{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.admin-nav{display:flex;gap:.5rem;margin-bottom:1.5rem;border-bottom:1px solid #e5e5e5;padding-bottom:.8rem}
.admin-nav a{padding:.4rem .8rem;border-radius:4px;font-size:.9rem;color:#555}
.admin-nav a.active{background:#3b82f6;color:#fff}
.admin-nav a.logout{margin-left:auto;color:#999}
.admin-nav a:hover{text-decoration:none;background:#f0f0f0}
.admin-nav a.active:hover{background:#2563eb}

h1{font-size:1.4rem;margin-bottom:1rem}
h2{font-size:1.1rem;margin:1.5rem 0 .8rem;color:#333}
.subtitle{color:#666;margin:-0.5rem 0 1rem;font-size:.95rem}

.add-form{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}
.add-form input,.add-form select{padding:.5rem;border:1px solid #ddd;border-radius:4px;font-size:.9rem}
.add-form input[type="text"],.add-form input[type="number"]{flex:1;min-width:120px}
.add-form select{min-width:180px}
.add-form button{padding:.5rem 1rem;background:#3b82f6;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;white-space:nowrap}
.add-form button:hover{background:#2563eb}
.add-form label{display:flex;align-items:center;gap:.3rem;font-size:.9rem;color:#555}

/* Category tree */
.category-tree{margin-top:.5rem}
.category-item{display:flex;align-items:center;gap:.5rem;padding:.4rem .5rem;border-radius:4px}
.category-item:hover{background:#f8f8f8}
.category-name{font-weight:500}
.category-path{color:#999;font-size:.8rem;flex:1}

/* Tables */
.data-table{width:100%;border-collapse:collapse;font-size:.9rem}
.data-table th{text-align:left;padding:.6rem .5rem;border-bottom:2px solid #e5e5e5;color:#666;font-weight:600}
.data-table td{padding:.5rem;border-bottom:1px solid #f0f0f0}
.data-table tbody tr:hover{background:#fafafa}
.actions{display:flex;gap:.3rem;justify-content:flex-end}

.inline-form{display:inline}
.btn-sm{padding:.2rem .6rem;font-size:.8rem;border-radius:3px;border:1px solid #ddd;background:#fff;cursor:pointer;color:#555}
.btn-sm:hover{background:#f0f0f0;text-decoration:none}
.btn-danger{color:#ef4444;border-color:#fca5a5}
.btn-danger:hover{background:#fef2f2}

.empty{color:#999;padding:1rem;text-align:center;font-size:.9rem}

/* Photos */
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1rem;margin-top:.5rem}
.photo-card{position:relative;border-radius:6px;overflow:hidden;background:#f0f0f0}
.photo-card img{width:100%;height:180px;object-fit:cover;display:block}
.photo-card form{position:absolute;top:4px;right:4px}
.photo-card .btn-sm{background:rgba(255,255,255,.9)}

/* Dashboard */
.stats-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-bottom:1.5rem}
.card{background:#fff;padding:1.2rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.1);text-align:center}
.card-label{font-size:.8rem;color:#666;text-transform:uppercase;letter-spacing:.05em}
.card-value{font-size:1.8rem;font-weight:700;color:#1a1a1a;margin-top:.3rem}

.charts-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem}
.chart-box{background:#fff;padding:1.2rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.chart-box h2{font-size:1rem;margin:0 0 .8rem;color:#333}
.chart-box.full-width{grid-column:1/-1}

.periods-list{background:#fff;padding:1.2rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.periods-list h2{font-size:1rem;margin:0 0 .8rem;color:#333}
.period-row{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid #f0f0f0;font-size:.9rem}
.period-dates{color:#555}
.period-volume{font-weight:600}

@media(max-width:640px){
    .charts-grid{grid-template-columns:1fr}
    .add-form{flex-direction:column}
    .add-form input,.add-form select{width:100%}
}