:root {
    color-scheme: light;
    --bg: #eef2f7;
    --panel: #ffffff;
    --line: #d7e0ea;
    --line-strong: #b8c6d5;
    --text: #1f2933;
    --muted: #65727f;
    --primary: #24579b;
    --primary-light: #4a7fc2;
    --success: #1f7a55;
    --danger: #b6483a;
    --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
}

button,
input,
select,
a {
    font: inherit;
}

a {
    text-decoration: none;
}

.btn {
    min-height: 38px;
    padding: 0 14px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.btn-primary {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

.btn-secondary {
    background: #fff;
}

.btn-success {
    border-color: var(--success);
    background: var(--success);
    color: #fff;
}

.btn-danger {
    border-color: var(--danger);
    background: var(--danger);
    color: #fff;
}

.login-body,
.dummy-body {
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-shell,
.dummy-shell {
    width: min(520px, 100%);
}

.login-panel,
.dummy-panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 28px;
}

.login-panel__head h1,
.dummy-panel h1 {
    margin: 0 0 10px;
    font-size: 2rem;
}

.login-panel__eyebrow {
    margin: 0 0 10px;
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.login-panel__head p,
.dummy-panel p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

.login-form {
    display: grid;
    gap: 14px;
    margin-top: 22px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.form-field {
    display: grid;
    gap: 6px;
}

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

.form-field span {
    font-size: 0.85rem;
    color: var(--muted);
}

.form-field input,
.form-field select {
    min-height: 42px;
    padding: 0 12px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: #fff;
}

.form-field input[readonly] {
    background: #f4f7fb;
}

.form-field__hint {
    font-size: 0.76rem;
    color: var(--muted);
    line-height: 1.5;
}

.form-note {
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #f7fbff;
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.6;
}

.login-actions,
.dummy-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.form-message {
    padding: 10px 12px;
    border-radius: 8px;
    background: #fff1ef;
    color: var(--danger);
    font-size: 0.88rem;
    margin-top: 18px;
}

.form-message[data-tone="success"] {
    background: #eef9f4;
    color: var(--success);
}

.form-message[data-tone="info"] {
    background: #eef5ff;
    color: var(--primary);
}

.main-shell {
    min-height: 100vh;
    display: grid;
}

.main-content {
    padding: 20px;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.main-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.app-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
}

.app-card__header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
}

.app-card__body {
    padding: 16px;
}

.conduit-row {
    display: flex;
    gap: 16px;
    align-items: start;
    flex-wrap: wrap;
}

.conduit-cell {
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.inline-label {
    font-size: 0.82rem;
    color: var(--muted);
}

.select-value {
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    background: #fff;
}

.select-value.is-dummy {
    background: #f7f9fb;
    color: var(--muted);
}

.select-value.is-static {
    border-color: transparent;
    padding-left: 0;
    background: transparent;
    font-weight: 700;
}

.fill-ratio-box {
    min-width: 160px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: end;
}

.fill-ratio-box strong {
    font-size: 1.7rem;
}

.cable-card {
    flex: 1;
}

.cable-card__body {
    display: flex;
    flex-direction: column;
    min-height: 380px;
}

.cable-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.dummy-list {
    display: grid;
    gap: 10px;
    align-content: start;
    flex: 1;
}

.dummy-list__item {
    padding: 12px 14px;
    border: 1px dashed var(--line-strong);
    border-radius: 10px;
    color: var(--muted);
    background: #fafbfd;
}

.result-strip {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: var(--muted);
}

.viz-dummy {
    position: relative;
    min-height: 520px;
    border-radius: 12px;
    border: 1px dashed var(--line-strong);
    background:
        linear-gradient(180deg, rgba(36, 87, 155, 0.04), rgba(36, 87, 155, 0)),
        #fbfcfd;
}

.viz-dummy__center {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--muted);
}

.viz-action {
    position: absolute;
    bottom: 20px;
    min-height: 36px;
    padding: 0 14px;
    border: 0;
    border-radius: 8px;
    color: #fff;
}

.viz-action--left {
    left: 20px;
    background: var(--success);
}

.viz-action--right {
    right: 20px;
    background: var(--primary);
}

.main-footer {
    display: flex;
    flex-direction: column;
    align-items: end;
    gap: 12px;
    padding: 8px 4px;
}

.footer-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: end;
    align-items: center;
}

.footer-user {
    color: var(--muted);
    font-size: 0.88rem;
}

.footer-divider {
    width: 100%;
    border-top: 1px solid var(--line);
}

.footer-copy {
    width: 100%;
    text-align: right;
    color: var(--muted);
    font-size: 0.74rem;
}

@media (max-width: 980px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .main-content {
        padding: 12px;
    }

    .login-panel,
    .dummy-panel {
        padding: 20px;
    }

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

    .conduit-row {
        flex-direction: column;
    }

    .fill-ratio-box {
        align-items: start;
    }
}