:root {
    --color-bg: #f1f5f9;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-error-bg: #fef2f2;
    --color-error-text: #b91c1c;
    --color-error-border: #fecaca;
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.setup-page {
    max-width: 640px;
    margin: 40px auto;
    padding: 0 24px 40px;
}

.setup-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
}

.setup-card h1 {
    font-size: 1.25rem;
    margin: 0 0 16px;
}

.setup-card hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 20px 0;
}

.auth-card {
    width: 100%;
    max-width: 360px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.auth-card h1 {
    font-size: 1.25rem;
    margin: 0 0 24px;
    text-align: center;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 6px;
    color: var(--color-text-muted);
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-primary {
    width: 100%;
    padding: 10px 12px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error-text);
    border: 1px solid var(--color-error-border);
    border-radius: var(--radius);
    padding: 10px 12px;
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: 12px;
}

.app-header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.app-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.app-nav {
    display: flex;
    gap: 16px;
}

.app-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
}

.app-nav a.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.app-header a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
}

.app-main {
    padding: 24px;
    max-width: 1080px;
}

.alert-success {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius);
    padding: 10px 12px;
    font-size: 0.875rem;
    margin-bottom: 16px;
}

/* ---- パネル・フォーム共通 ---- */
.panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}

.panel h2 {
    margin-top: 0;
    font-size: 1.05rem;
}

.panel-desc, .hint {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    margin-top: -8px;
}

.detail-form {
    max-width: 560px;
}

.required {
    color: #dc2626;
}

.inline-form {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.inline-form input[type="text"],
.inline-form input[type="number"] {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
}

select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: #fff;
}

/* ---- ボタン ---- */
.btn-secondary, .btn-danger, .btn-small, .btn-link {
    display: inline-block;
    padding: 8px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text);
    font-size: 0.875rem;
    cursor: pointer;
    text-decoration: none;
}

.btn-secondary:hover, .btn-small:hover {
    background: #f8fafc;
}

.btn-danger {
    border-color: #fecaca;
    color: #b91c1c;
}

.btn-danger:hover {
    background: #fef2f2;
}

.btn-small {
    padding: 4px 10px;
    font-size: 0.8125rem;
}

.btn-link {
    border: none;
    color: var(--color-primary);
}

a.btn-primary {
    display: inline-block;
    text-decoration: none;
    width: auto;
}

/* ---- テーブル ---- */
.data-table, .meta-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 8px;
}

.data-table th, .data-table td,
.meta-table th, .meta-table td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.data-table th {
    color: var(--color-text-muted);
    font-weight: 600;
}

.data-table a {
    color: var(--color-primary);
    text-decoration: none;
}

.data-table form {
    display: contents;
}

.row-actions {
    display: flex;
    gap: 6px;
    white-space: nowrap;
}

.empty-row {
    text-align: center;
    color: var(--color-text-muted);
    padding: 24px 0;
}

.input-narrow {
    width: 72px;
}

/* ---- チップ ---- */
.tag-chip, .status-chip {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    background: color-mix(in srgb, var(--chip-color) 15%, white);
    border: 1px solid var(--chip-color);
    color: var(--chip-color);
    margin: 2px 4px 2px 0;
}

.checkbox-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
}

/* ---- 一覧ツールバー・ページング ---- */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.filter-form {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-form input[type="text"] {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    min-width: 220px;
}

.filter-form select {
    width: auto;
    padding: 8px 10px;
}

.result-count {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    font-size: 0.875rem;
}

.pagination a {
    color: var(--color-primary);
    text-decoration: none;
}

/* ---- ダッシュボード・レポート ---- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 8px;
}

.stat-tile {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
}

.stat-tile .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-tile .stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.project-summary-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 12px;
}

.project-summary-card h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.project-summary-card h3 a {
    color: inherit;
    text-decoration: none;
}

.project-summary-card h3 a:hover {
    text-decoration: underline;
}

.integration-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 12px;
}

.integration-card h3 {
    margin: 0 0 8px;
    font-size: 0.95rem;
}

/* ---- カレンダー(月表示) ---- */
.calendar-grid {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
    margin-bottom: 8px;
}

.calendar-grid th {
    padding: 6px 4px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.calendar-cell {
    vertical-align: top;
    height: 92px;
    border: 1px solid var(--color-border);
    padding: 4px;
    font-size: 0.75rem;
}

.calendar-cell-empty {
    background: #f8fafc;
}

.calendar-cell-today {
    background: #eff6ff;
}

.calendar-day-num {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    margin-bottom: 2px;
}

.calendar-event {
    display: block;
    font-size: 0.6875rem;
    padding: 1px 4px;
    margin-bottom: 2px;
    border-radius: 3px;
    background: color-mix(in srgb, var(--chip-color) 18%, white);
    color: var(--chip-color);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.calendar-more {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
}

button:disabled,
.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.embed-code {
    width: 100%;
    min-height: 60px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.8125rem;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #f8fafc;
    resize: vertical;
}