* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", sans-serif;
    background: #f5f7fb;
    color: #1f2937;
}

.layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: #111827;
    color: #f9fafb;
    padding: 20px;
}

.sidebar h1 {
    font-size: 18px;
    margin: 0 0 20px;
}

.sidebar nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar a {
    color: #e5e7eb;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 8px;
}

.sidebar a.active {
    background: #2563eb;
    color: #ffffff;
}

.sidebar a.disabled {
    opacity: 0.6;
    pointer-events: none;
}

.main {
    padding: 20px;
    display: grid;
    gap: 16px;
}

.hidden {
    display: none;
}

.widget {
    background: #ffffff;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 2px 8px rgba(17, 24, 39, 0.08);
}

.widget h2 {
    margin-top: 0;
    font-size: 18px;
}

.filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    align-items: end;
}

.filters label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
}

select,
input,
button {
    border: 1px solid #d1d5db;
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 14px;
}

button {
    background: #2563eb;
    color: #ffffff;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    border-bottom: 1px solid #e5e7eb;
    padding: 8px;
    text-align: left;
}

.power-diff {
    margin-left: 4px;
    font-size: 0.9em;
}

.power-diff-up {
    color: #16a34a;
}

.power-diff-down {
    color: #dc2626;
}

.guild-link-list {
    display: grid;
    gap: 8px;
    margin-top: 12px;
}

.guild-link {
    display: inline-block;
    color: #1d4ed8;
    text-decoration: none;
    padding: 8px 10px;
    border: 1px solid #dbeafe;
    border-radius: 8px;
    background: #eff6ff;
}

.guild-link:hover {
    background: #dbeafe;
}

@media (max-width: 960px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: sticky;
        top: 0;
        z-index: 10;
    }
}

/* ランキング分析 */
.analysis-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
}

.analysis-world-label,
.analysis-limit-label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 14px;
}

.date-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.date-nav input[type="date"] {
    font-size: 14px;
    padding: 8px 10px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
}

.nav-btn {
    background: #374151;
    color: #f9fafb;
    padding: 8px 14px;
    font-size: 13px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.nav-btn:hover:not(:disabled) {
    background: #1f2937;
}

.nav-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}