:root {
    --ebok-navy: #102a43;
    --ebok-blue: #1769aa;
    --ebok-light: #f4f7fb;
    --ebok-border: #d9e2ec;
    --ebok-text: #243b53;
    --ebok-muted: #627d98;
    --ebok-success: #147d64;
    --ebok-danger: #b42318;
}

.ebok-shell {
    min-height: 100vh;
    background: var(--ebok-light);
    color: var(--ebok-text);
    display: flex;
    flex-direction: column;
}

.ebok-header {
    background: #fff;
    border-bottom: 1px solid var(--ebok-border);
    box-shadow: 0 2px 10px rgba(16, 42, 67, .05);
    padding: 1rem max(1.25rem, calc((100vw - 1200px) / 2));
}

.ebok-brand {
    color: var(--ebok-navy);
    font-size: 1.2rem;
    font-weight: 750;
    text-decoration: none;
    letter-spacing: .01em;
    display: inline-flex;
    align-items: center;
    gap: .9rem;
}

.ebok-brand span { color: var(--ebok-navy); font-weight: 600; }
.ebok-brand img { display: block; width: auto; height: 44px; max-width: min(220px, 60vw); object-fit: contain; }

.ebok-main {
    width: min(1200px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
    flex: 1;
}

.ebok-footer {
    color: var(--ebok-muted);
    text-align: center;
    padding: 1.5rem;
    font-size: .85rem;
}

.ebok-auth-card {
    width: min(460px, 100%);
    margin: 4vh auto;
    padding: clamp(1.5rem, 5vw, 2.5rem);
    border: 1px solid var(--ebok-border);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(16, 42, 67, .08);
}

.ebok-auth-card h1 { font-size: 1.7rem; margin: 0 0 .5rem; }
.ebok-auth-card form { display: grid; gap: .55rem; margin-top: 1.5rem; }
.ebok-auth-card label { font-weight: 650; margin-top: .45rem; }
.ebok-auth-card input {
    width: 100%;
    border: 1px solid #bcccdc;
    border-radius: 8px;
    padding: .8rem .9rem;
    font: inherit;
}
.ebok-auth-card input:focus { outline: 3px solid rgba(23, 105, 170, .18); border-color: var(--ebok-blue); }

.ebok-button {
    border: 0;
    border-radius: 8px;
    padding: .8rem 1.1rem;
    background: var(--ebok-blue);
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    margin-top: .75rem;
}

.ebok-button:hover { background: #12598f; }
.ebok-button-secondary { background: #e6eef5; color: var(--ebok-navy); margin: 0; }
.ebok-button-secondary:hover { background: #d6e2ec; }
.ebok-auth-link { display: inline-block; margin-top: 1.25rem; color: var(--ebok-blue); }
.ebok-muted, .ebok-empty { color: var(--ebok-muted); }

.ebok-alert { padding: .9rem 1rem; border-radius: 8px; margin: 1rem 0; }
.ebok-alert-success { color: #075e54; background: #e4f4ef; border: 1px solid #a9dfd0; }
.ebok-alert-error { color: #8a1c13; background: #fff0ee; border: 1px solid #f4b8b2; }

.ebok-dashboard-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.ebok-dashboard-heading h1 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.35rem); }
.ebok-eyebrow { color: var(--ebok-blue); font-weight: 700; margin: 0 0 .25rem; }

.ebok-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.ebok-summary-card, .ebok-panel {
    background: #fff;
    border: 1px solid var(--ebok-border);
    border-radius: 12px;
    padding: 1.25rem;
}

.ebok-summary-card span { color: var(--ebok-muted); display: block; font-size: .9rem; }
.ebok-summary-card strong { display: block; font-size: 1.35rem; margin-top: .3rem; }
.ebok-summary-card.is-positive strong { color: var(--ebok-success); }
.ebok-summary-card.is-negative strong, .ebok-status.is-due { color: var(--ebok-danger); }

.ebok-content-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.ebok-content-grid-wide { grid-template-columns: 2fr 1fr; }
.ebok-panel h2 { font-size: 1.15rem; margin: 0 0 1rem; color: var(--ebok-navy); }
.ebok-details { display: grid; grid-template-columns: minmax(130px, .7fr) 1.5fr; gap: .6rem 1rem; margin: 0; }
.ebok-details dt { color: var(--ebok-muted); font-weight: 500; }
.ebok-details dd { margin: 0; }
.ebok-list { display: grid; gap: .75rem; }
.ebok-list article { border-bottom: 1px solid #edf2f7; padding-bottom: .75rem; }
.ebok-list article:last-child { border-bottom: 0; padding-bottom: 0; }
.ebok-list article p { margin: .35rem 0; }
.ebok-list article small { color: var(--ebok-muted); }
.ebok-list-heading { display: flex; justify-content: space-between; gap: 1rem; }

.ebok-table-wrap { overflow-x: auto; }
.ebok-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.ebok-table th { color: var(--ebok-muted); font-weight: 650; text-align: left; }
.ebok-table th, .ebok-table td { border-bottom: 1px solid #edf2f7; padding: .7rem .6rem; vertical-align: top; }
.ebok-table tr:last-child td { border-bottom: 0; }
.ebok-status { color: var(--ebok-success); font-weight: 650; white-space: nowrap; }
.ebok-download {
    appearance: none;
    border: 1px solid #a9c9e2;
    border-radius: 7px;
    background: #fff;
    color: var(--ebok-blue);
    white-space: nowrap;
    font: inherit;
    font-weight: 650;
    line-height: 1.2;
    padding: .38rem .65rem;
    cursor: pointer;
}

.ebok-download:hover:not(:disabled) { background: #edf6fc; }
.ebok-download:focus-visible { outline: 3px solid rgba(23, 105, 170, .25); outline-offset: 2px; }
.ebok-download:disabled { cursor: wait; opacity: .72; }
.ebok-download-spinner {
    display: inline-block;
    width: .82rem;
    height: .82rem;
    margin-left: .4rem;
    vertical-align: -.1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: ebok-spin .7s linear infinite;
}

@keyframes ebok-spin { to { transform: rotate(360deg); } }

@media (max-width: 850px) {
    .ebok-summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ebok-content-grid, .ebok-content-grid-wide { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
    .ebok-main { width: min(100% - 1rem, 1200px); padding-top: 1rem; }
    .ebok-dashboard-heading { align-items: flex-start; }
    .ebok-summary-grid { grid-template-columns: 1fr; }
    .ebok-details { grid-template-columns: 1fr; gap: .2rem; }
    .ebok-details dd { margin-bottom: .55rem; }
    .ebok-panel, .ebok-summary-card { padding: 1rem; }
}