:root {
    color-scheme: light;
    --background: #f4f7fb;
    --surface: #ffffff;
    --text: #172033;
    --muted: #667085;
    --border: #dfe5ee;
    --primary: #175cd3;
    --primary-disabled: #9bb7e5;
    --shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-width: 320px;
    min-height: 100vh;
    background: var(--background);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
}

.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.header-inner,
.page-container {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.header-inner {
    display: flex;
    align-items: baseline;
    gap: 12px;
    min-height: 68px;
}

.brand-name {
    margin: 0;
    font-size: 22px;
    font-weight: 750;
    letter-spacing: 0.02em;
}

.brand-subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

.page-container {
    padding: 48px 0 72px;
}

.page-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 28px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

h1 {
    margin: 0;
    font-size: clamp(28px, 4vw, 40px);
    line-height: 1.2;
}

.page-description {
    margin: 12px 0 0;
    color: var(--muted);
}

.primary-button {
    min-height: 44px;
    padding: 0 18px;
    border: 0;
    border-radius: 10px;
    background: var(--primary-disabled);
    color: #ffffff;
    font: inherit;
    font-weight: 700;
    white-space: nowrap;
}

.primary-button:disabled {
    cursor: not-allowed;
}

.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.primary-button.button-link {
    background: var(--primary);
}

.primary-button.button-link:hover {
    filter: brightness(0.95);
}

.card {
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.empty-state {
    display: grid;
    place-items: center;
    min-height: 320px;
    padding: 48px 24px;
    text-align: center;
}

.empty-icon {
    display: grid;
    place-items: center;
    width: 64px;
    height: 64px;
    margin-bottom: 18px;
    border-radius: 18px;
    background: #eaf2ff;
    color: var(--primary);
    font-size: 28px;
    font-weight: 800;
}

.empty-state h2 {
    margin: 0;
    font-size: 20px;
}

.empty-state p {
    margin: 10px 0 0;
    color: var(--muted);
}

@media (max-width: 760px) {
    .header-inner,
    .page-container {
        width: min(100% - 28px, 1120px);
    }

    .header-inner {
        min-height: 60px;
    }

    .brand-subtitle {
        display: none;
    }

    .page-container {
        padding: 32px 0 48px;
    }

    .page-heading {
        align-items: stretch;
        flex-direction: column;
    }

    .primary-button {
        width: 100%;
    }

    .empty-state {
        min-height: 260px;
        padding: 36px 18px;
    }
}


.form-page {
    max-width: 880px;
}

.breadcrumb {
    display: flex;
    gap: 8px;
    margin-bottom: 26px;
    color: var(--muted);
    font-size: 13px;
}

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

.compact-heading {
    margin-bottom: 22px;
}

.form-card {
    padding: 30px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.form-field {
    display: grid;
    gap: 8px;
}

.form-field.full-width {
    grid-column: 1 / -1;
}

.form-field label {
    font-size: 14px;
    font-weight: 700;
}

.required {
    display: inline-block;
    margin-left: 6px;
    padding: 2px 6px;
    border-radius: 999px;
    background: #fff1f0;
    color: #b42318;
    font-size: 11px;
    font-weight: 700;
}

.form-field input {
    width: 100%;
    min-height: 46px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #ffffff;
    color: var(--text);
    font: inherit;
}

.form-field input:focus {
    border-color: var(--primary);
    outline: 3px solid rgba(23, 92, 211, 0.12);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 30px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
}

.secondary-button {
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #ffffff;
    color: var(--text);
    font-weight: 700;
}

.form-note {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 12px;
    text-align: right;
}

@media (max-width: 760px) {
    .form-card {
        padding: 22px 18px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-field.full-width {
        grid-column: auto;
    }

    .form-actions {
        flex-direction: column-reverse;
    }

    .form-actions .primary-button,
    .form-actions .secondary-button {
        width: 100%;
    }

    .form-note {
        text-align: left;
    }
}

.regatta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.regatta-card {
    padding: 24px;
}

.regatta-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.regatta-date {
    margin: 0;
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
}

.race-count {
    padding: 5px 10px;
    border-radius: 999px;
    background: #eef3fc;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.regatta-card h2 {
    margin: 18px 0 8px;
    font-size: 22px;
}

.regatta-venue {
    margin: 0;
    color: var(--muted);
}

.error-summary {
    margin-bottom: 24px;
    padding: 16px 18px;
    border: 1px solid #efb4b4;
    border-radius: 12px;
    background: #fff4f4;
    color: #9a2424;
}

.error-summary p {
    margin: 0 0 8px;
    font-weight: 700;
}

.error-summary ul {
    margin: 0;
    padding-left: 20px;
}

/* Ver.0.7 大会作成画面 */
.header-with-action {
    justify-content: space-between;
}

.brand-group {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.header-back-button {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #ffffff;
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
}

.form-page {
    max-width: 1120px;
}

.form-card {
    padding: 34px;
}

.form-grid {
    align-items: start;
}

.form-field input {
    height: 48px;
}

.narrow-number-field input {
    max-width: 280px;
}

.cut-condition-field {
    padding-top: 4px;
}

.cut-condition-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.cut-condition-row input {
    width: 92px;
    flex: 0 0 92px;
    text-align: center;
}

.cut-condition-row span {
    color: var(--text);
    font-size: 15px;
}

.primary-button.active {
    background: var(--primary);
    cursor: pointer;
}

.primary-button.active:hover {
    filter: brightness(0.95);
}

@media (max-width: 760px) {
    .header-with-action {
        gap: 12px;
    }

    .header-back-button {
        padding: 0 10px;
        font-size: 12px;
    }

    .form-card {
        padding: 22px 18px;
    }

    .narrow-number-field input {
        max-width: none;
    }

    .cut-condition-row {
        display: grid;
        grid-template-columns: 86px auto;
        gap: 8px 10px;
    }

    .cut-condition-row input {
        width: 86px;
    }
}

/* Ver.0.10 大会一覧カード */

.regatta-card-list {
    display: grid;
    gap: 24px;
    margin-top: 32px;
}

.regatta-card {
    display: block;
    padding: 28px 32px;
    color: inherit;
    text-decoration: none;
    background: #ffffff;
    border: 1px solid #dce3ef;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(31, 45, 74, 0.06);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease;
}

.regatta-card:hover {
    transform: translateY(-3px);
    border-color: #adc0ea;
    box-shadow: 0 16px 36px rgba(31, 45, 74, 0.12);
}

.regatta-card:focus-visible {
    outline: 3px solid rgba(51, 102, 204, 0.25);
    outline-offset: 3px;
}

.regatta-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.regatta-card-header h2 {
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.4;
    color: #172033;
}

.status-badge {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 4px 12px;
    font-size: 0.82rem;
    font-weight: 700;
    border-radius: 999px;
}

.status-upcoming {
    color: #315fc2;
    background: #eaf0ff;
}

.status-active {
    color: #147044;
    background: #e6f6ee;
}

.status-finished {
    color: #647084;
    background: #edf0f4;
}

.status-unknown {
    color: #8a6415;
    background: #fff4d8;
}

.regatta-card-details {
    display: grid;
    grid-template-columns: 1.4fr 1.4fr 1fr;
    gap: 24px;
    margin: 0;
}

.regatta-card-details div {
    min-width: 0;
}

.regatta-card-details dt {
    margin-bottom: 6px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #77839a;
}

.regatta-card-details dd {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #273249;
    overflow-wrap: anywhere;
}

@media (max-width: 760px) {
    .regatta-card {
        padding: 22px 20px;
        border-radius: 16px;
    }

    .regatta-card-header {
        gap: 16px;
        margin-bottom: 20px;
    }

    .regatta-card-header h2 {
        font-size: 1.25rem;
    }

    .regatta-card-details {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}