@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --brand-primary: #1e293b;
    --brand-accent: #0d9488;
    --brand-accent-light: #14b8a6;
    --brand-accent-glow: rgba(13, 148, 136, 0.1);
    --brand-success: #16a34a;
    --brand-warning: #d97706;
    --brand-danger: #dc2626;
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --bg-sidebar: #1e293b;
    --bg-input: #f8fafc;
    --border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-on-dark: #e2e8f0;
    --sidebar-w: 230px;
    --header-h: 60px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,.08);
    --transition: 0.2s cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:14px}
body{font-family:'Noto Sans JP',sans-serif;color:var(--text-primary);background:var(--bg-body);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--brand-accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--brand-accent-light)}

.app-layout{display:grid;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:var(--header-h) 1fr;min-height:100vh}
.sidebar{grid-row:1/-1;background:var(--bg-sidebar);color:var(--text-on-dark);overflow-y:auto}
.header{background:var(--bg-card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px;box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:50}
.main-content{padding:28px;overflow-y:auto}

.sidebar-brand{padding:22px 20px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-brand h1{font-size:1.15rem;font-weight:700;display:flex;align-items:center;gap:10px}
.sidebar-brand small{display:block;font-size:.72rem;color:rgba(255,255,255,.45);margin-top:2px}
.sidebar-nav{padding:12px 0}
.sidebar-nav a{display:flex;align-items:center;gap:12px;padding:11px 22px;color:rgba(255,255,255,.6);font-size:.92rem;transition:all var(--transition);border-left:3px solid transparent}
.sidebar-nav a:hover{color:#fff;background:rgba(255,255,255,.05)}
.sidebar-nav a.active{color:#fff;background:rgba(13,148,136,.15);border-left-color:var(--brand-accent);font-weight:500}
.sidebar-nav a .icon{font-size:1.15rem;width:22px;text-align:center}
.sidebar-section{padding:18px 22px 6px;font-size:.68rem;font-weight:600;color:rgba(255,255,255,.3);text-transform:uppercase;letter-spacing:.1em}

.header-title{font-size:1.05rem;font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px}

.card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border);margin-bottom:24px}
.card-header{padding:18px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-header h2{font-size:1rem;font-weight:600}
.card-body{padding:24px}

.welcome-banner{background:linear-gradient(135deg,var(--brand-accent),#0f766e);color:#fff;border-radius:var(--radius-lg);padding:32px;margin-bottom:28px}
.welcome-banner h2{font-size:1.4rem;font-weight:700;margin-bottom:6px}
.welcome-banner p{opacity:.85;font-size:.9rem}

.info-grid{display:grid;grid-template-columns:140px 1fr;gap:0;border:1px solid var(--border);border-radius:var(--radius)}
.info-grid dt{background:var(--bg-input);padding:12px 16px;font-weight:600;font-size:.85rem;color:var(--text-secondary);border-bottom:1px solid var(--border)}
.info-grid dd{padding:12px 16px;border-bottom:1px solid var(--border);font-size:.9rem}
.info-grid dt:last-of-type,.info-grid dd:last-of-type{border-bottom:none}

.form-group{margin-bottom:16px}
.form-label{display:block;font-size:.82rem;font-weight:500;color:var(--text-secondary);margin-bottom:5px}
.form-label .required{color:var(--brand-danger);margin-left:2px}
.form-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;font-family:inherit;background:var(--bg-input);color:var(--text-primary);transition:all var(--transition)}
.form-input:focus{outline:none;border-color:var(--brand-accent);box-shadow:0 0 0 3px var(--brand-accent-glow);background:#fff}
textarea.form-input{resize:vertical;min-height:80px}

.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border:none;border-radius:var(--radius);font-size:.85rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn-primary{background:var(--brand-accent);color:#fff}
.btn-primary:hover{background:var(--brand-accent-light);box-shadow:var(--shadow-md)}
.btn-outline{background:transparent;color:var(--brand-accent);border:1px solid var(--brand-accent)}
.btn-outline:hover{background:var(--brand-accent-glow)}
.btn-danger{background:var(--brand-danger);color:#fff}
.btn-sm{padding:5px 10px;font-size:.78rem}

.alert{padding:14px 18px;border-radius:var(--radius);font-size:.88rem;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.alert-success{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
.alert-danger{background:#fef2f2;color:#dc2626;border:1px solid #fecaca}
.alert-warning{background:#fffbeb;color:#d97706;border:1px solid #fde68a}
.alert-info{background:#f0fdfa;color:#0d9488;border:1px solid #99f6e4}

.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.72rem;font-weight:600}
.badge-active{background:#ecfdf5;color:#047857}
.badge-inactive{background:#fef2f2;color:#dc2626}
.badge-primary{background:#f0fdfa;color:#0d9488}
.badge-secondary{background:#eff6ff;color:#1d4ed8}
.badge-special{background:#fefce8;color:#ca8a04}
.email-tag{font-family:'JetBrains Mono',monospace;font-size:.82rem;color:var(--text-primary)}

.data-table{width:100%;border-collapse:collapse}
.data-table thead th{background:var(--bg-input);padding:12px 16px;text-align:left;font-size:.78rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;border-bottom:2px solid var(--border)}
.data-table tbody td{padding:14px 16px;border-bottom:1px solid var(--border);font-size:.9rem}
.data-table tbody tr:hover{background:var(--brand-accent-glow)}

.login-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--brand-primary);background-image:radial-gradient(ellipse at 20% 80%,rgba(13,148,136,.15) 0%,transparent 50%),radial-gradient(ellipse at 80% 20%,rgba(13,148,136,.1) 0%,transparent 50%)}
.login-box{width:400px;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:0 8px 32px rgba(0,0,0,.2);padding:40px 36px}
.login-box h1{font-size:1.3rem;font-weight:700;text-align:center;margin-bottom:6px;color:var(--brand-primary)}
.login-subtitle{text-align:center;color:var(--text-secondary);font-size:.82rem;margin-bottom:28px}
.login-box .form-group{margin-bottom:16px}
.login-box .btn-primary{width:100%;padding:12px;font-size:.95rem;margin-top:8px}

@media(max-width:768px){.app-layout{grid-template-columns:1fr}.sidebar{display:none}.info-grid{grid-template-columns:1fr}}