:root {
    --primary: #e67e22;
    --primary-dark: #d35400;
    --primary-light: #fdebd0;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --white: #ffffff;
    --text: #1e293b;
    --text-light: #475569;
    --text-muted: #94a3b8;
    --bg: #f8fafc;
    --bg-gray: #f1f5f9;
    --border: #cbd5e1;
    --sidebar-bg: #1a1a2e;
    --sidebar-active: #0f3460;
    --sidebar-text: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans JP', sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0; top: 0;
    width: 240px; height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex; flex-direction: column;
    z-index: 100;
    transition: transform 0.3s;
}
.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-header h1 {
    font-size: 20px;
    letter-spacing: 1px;
    color: var(--primary);
}
.sidebar-header p {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    margin-top: 4px;
}
.sidebar-nav {
    flex: 1; overflow-y: auto;
    padding: 12px 0;
}
.nav-section { margin-bottom: 8px; }
.nav-section-title {
    padding: 8px 20px 4px;
    font-size: 11px;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s;
}
.nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-item.active {
    background: var(--sidebar-active);
    color: #fff;
    border-right: 3px solid var(--primary);
}
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: space-between;
}
.user-info { display: flex; align-items: center; gap: 10px; }
.user-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px; color: #fff;
}
.user-name { font-size: 13px; color: rgba(255,255,255,0.8); }
.logout-btn { color: rgba(255,255,255,0.5); transition: color 0.2s; }
.logout-btn:hover { color: var(--danger); }

/* Main Content */
.main-content {
    margin-left: 240px;
    min-height: 100vh;
}
.page-header {
    padding: 16px 24px;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.header-left { display: flex; align-items: center; gap: 12px; }
.header-left h2 { font-size: 18px; letter-spacing: 0.5px; }
.header-actions { display: flex; gap: 8px; }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text); }
.content { padding: 24px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    border: none; border-radius: 8px;
    font-size: 13px; font-weight: 500;
    cursor: pointer; transition: all 0.2s;
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--white); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn-icon { background: none; border: none; cursor: pointer; padding: 4px; font-size: 14px; color: var(--text-light); }
.btn-icon.danger { color: var(--danger); }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-light); margin-bottom: 4px; }
.form-control {
    width: 100%; padding: 8px 12px;
    border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; color: var(--text);
    background: var(--white);
    transition: border-color 0.2s;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(230,126,34,0.1); }
.required { color: var(--danger); }

.form-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.form-row-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.form-row-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }

/* Tables */
.table-container {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    overflow: hidden;
}
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--bg-gray); }
th { padding: 10px 12px; font-size: 12px; font-weight: 600; color: var(--text-light); text-align: left; white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--bg-gray); font-size: 13px; }
tbody tr:hover { background: #fef9f3; }
tbody tr { cursor: pointer; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.font-bold { font-weight: 600; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

/* Search Bar */
.search-bar {
    padding: 16px 20px;
    display: flex; flex-wrap: wrap; align-items: end; gap: 12px;
    border-bottom: 1px solid var(--bg-gray);
}
.search-group { display: flex; flex-direction: column; gap: 4px; }
.search-group label { font-size: 11px; color: var(--text-light); font-weight: 600; }
.search-group .form-control { width: auto; min-width: 140px; padding: 6px 10px; font-size: 13px; }
.search-summary {
    margin-left: auto;
    display: flex; gap: 16px;
    font-size: 12px; color: var(--text-light);
    align-self: center;
}
.search-summary span { white-space: nowrap; }

/* Edit Card */
.edit-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    margin-bottom: 20px;
    overflow: hidden;
}
.edit-card-header {
    padding: 12px 20px;
    background: var(--bg-gray);
    font-size: 14px; font-weight: 600; color: var(--text);
    display: flex; align-items: center; justify-content: space-between;
}
.edit-card-body { padding: 20px; }

.edit-table { width: 100%; border-collapse: collapse; }
.edit-table th { padding: 8px 10px; font-size: 12px; background: var(--bg-gray); }
.edit-table td { padding: 6px 8px; border-bottom: 1px solid var(--bg-gray); }
.edit-table .form-control { padding: 6px 8px; font-size: 13px; border-radius: 6px; }
.edit-table tfoot th { font-size: 13px; }

/* Summary Cards */
.summary-cards {
    display: flex; gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--bg-gray);
}
.summary-card {
    background: var(--bg-gray);
    border-radius: 12px;
    padding: 12px 20px;
    min-width: 160px;
}
.summary-label { font-size: 11px; color: var(--text-light); font-weight: 600; }
.summary-value { font-size: 20px; font-weight: 700; color: var(--text); margin-top: 4px; }

/* Badges */
.badge {
    display: inline-block; padding: 2px 8px;
    border-radius: 10px; font-size: 11px; font-weight: 600;
}
.badge-primary { background: var(--primary-light); color: var(--primary-dark); }
.badge-success { background: #dcfce7; color: #15803d; }
.badge-gray { background: var(--bg-gray); color: var(--text-light); }

/* Context Menu */
.context-menu {
    display: none; position: absolute;
    background: var(--white); border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    padding: 6px 0; min-width: 140px; z-index: 200;
}
.context-menu-item {
    padding: 8px 16px; font-size: 13px; cursor: pointer;
    transition: background 0.15s;
}
.context-menu-item:hover { background: var(--bg-gray); }
.context-menu-item.danger { color: var(--danger); }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex; align-items: center; justify-content: center;
    z-index: 300;
    backdrop-filter: blur(2px);
}
.modal-box {
    background: var(--white);
    border-radius: 16px;
    width: 100%; max-width: 480px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--bg-gray);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-size: 16px; }
.modal-close {
    background: none; border: none;
    font-size: 24px; cursor: pointer;
    color: var(--text-light);
}
.modal-body { padding: 20px; }
.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--bg-gray);
    display: flex; justify-content: flex-end; gap: 8px;
}

/* Alerts */
.alert {
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
}
.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }

/* Loading */
.loading-overlay {
    position: fixed; inset: 0;
    background: rgba(255,255,255,0.7);
    display: flex; align-items: center; justify-content: center;
    z-index: 500;
}
.loading-spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Success Modal */
.success-modal {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.3);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    z-index: 600;
}
.success-icon {
    width: 60px; height: 60px;
    background: var(--success);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 28px; font-weight: 700;
}
.success-text {
    margin-top: 12px;
    color: #fff; font-size: 16px; font-weight: 600;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #7f2e0e 0%, #0f172a 100%);
}
.login-box {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    width: 100%; max-width: 400px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo h1 { font-size: 28px; color: var(--primary); letter-spacing: 2px; }
.login-logo p { font-size: 13px; color: var(--text-light); margin-top: 4px; }

code {
    background: var(--bg-gray);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .menu-toggle { display: block; }
    .form-row-3, .form-row-4, .form-row-5 { grid-template-columns: 1fr; }
    .search-bar { flex-direction: column; align-items: stretch; }
    .search-summary { margin-left: 0; flex-wrap: wrap; }
    .summary-cards { flex-direction: column; }
    .page-header { padding: 12px 16px; }
    .content { padding: 16px; }
    .header-left h2 { font-size: 16px; }
}