:root {
    --navy: #123047;
    --blue: #176b87;
    --teal: #1b998b;
    --gold: #d8a12e;
    --background: #f3f6f8;
    --surface: #ffffff;
    --text: #24313a;
    --muted: #647681;
    --border: #dce5e9;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: "Segoe UI", Arial, sans-serif;
    line-height: 1.6;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 6%;
    background: var(--navy);
    color: white;
}

.brand {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.subtitle {
    margin-left: 14px;
    color: #c6d9e2;
}

nav a {
    margin-left: 22px;
    color: white;
    text-decoration: none;
}

nav a:hover {
    color: var(--gold);
}

.container {
    width: min(1120px, 90%);
    margin: 0 auto;
    padding: 46px 0;
}

.hero {
    padding: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--navy), var(--blue));
    color: white;
}

.eyebrow {
    color: #9ee3dc;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.hero h1 {
    max-width: 760px;
    margin: 8px 0;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.15;
}

.hero-text {
    max-width: 720px;
    color: #e3f1f4;
    font-size: 1.1rem;
}

.status-panel {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin: 28px 0 46px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--border);
}

.status-panel div {
    padding: 20px;
    background: var(--surface);
}

.status-panel span,
.status-panel strong {
    display: block;
}

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

.status-ok {
    color: var(--teal);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 18px;
}

.card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    box-shadow: 0 6px 20px rgba(18, 48, 71, 0.06);
}

.card h3 {
    margin: 8px 0;
}

.step {
    color: var(--blue);
    font-weight: 700;
}

footer {
    padding: 24px;
    background: #e5ecef;
    color: var(--muted);
    text-align: center;
}

@media (max-width: 720px) {
    .site-header,
    .status-panel {
        display: block;
    }

    nav {
        margin-top: 12px;
    }

    nav a {
        margin: 0 18px 0 0;
    }

    .hero {
        padding: 30px;
    }

    .status-panel div {
        border-bottom: 1px solid var(--border);
    }
}

.nav-user {
    margin-left: 22px;
    color: #9ee3dc;
}

.inline-form {
    display: inline;
}

.link-button {
    margin-left: 18px;
    padding: 0;
    border: 0;
    background: transparent;
    color: white;
    font: inherit;
    cursor: pointer;
}

.link-button:hover {
    color: var(--gold);
}

.form-card {
    max-width: 520px;
    margin: 30px auto;
    padding: 36px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    box-shadow: 0 8px 24px rgba(18, 48, 71, 0.08);
}

.eyebrow.dark {
    color: var(--blue);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid #b8c8d0;
    border-radius: 7px;
    font: inherit;
}

.primary-button {
    padding: 11px 22px;
    border: 0;
    border-radius: 7px;
    background: var(--blue);
    color: white;
    font-weight: 600;
    cursor: pointer;
}

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

.alert-error {
    margin-bottom: 20px;
    padding: 12px;
    border-left: 4px solid #b42318;
    background: #fef3f2;
    color: #912018;
}

.upload-card {
    max-width: 680px;
}

.form-group select,
.form-group input[type="file"] {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid #b8c8d0;
    border-radius: 7px;
    background: white;
    font: inherit;
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--muted);
}

.errorlist {
    margin: 7px 0 0;
    padding-left: 20px;
    color: #b42318;
}

.messages {
    margin-bottom: 22px;
}

.alert {
    padding: 14px 16px;
    border-radius: 8px;
}

.alert-success {
    border-left: 4px solid var(--teal);
    background: #eaf8f5;
    color: #12655d;
}

.alert-error {
    border-left: 4px solid #b42318;
    background: #fef3f2;
    color: #912018;
}

.page-heading {
    margin-bottom: 28px;
}

.page-heading h1 {
    margin: 4px 0;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 18px;
    margin-bottom: 32px;
}

.kpi-card {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

.kpi-card span,
.kpi-card small {
    display: block;
    color: var(--muted);
}

.kpi-card strong {
    display: block;
    margin-top: 8px;
    color: var(--navy);
    font-size: 1.7rem;
}

.table-card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

.table-scroll {
    overflow-x: auto;
}

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

th,
td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap;
}

th {
    background: #edf3f5;
    color: var(--navy);
}

td small {
    color: var(--muted);
}

.action-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.button-link {
    display: inline-block;
    text-decoration: none;
    white-space: nowrap;
}

.small-button {
    padding: 7px 13px;
    border: 0;
    border-radius: 6px;
    background: var(--blue);
    color: white;
    cursor: pointer;
}

.status-badge {
    display: inline-block;
    padding: 4px 9px;
    border-radius: 999px;
    background: #e5ecef;
    font-size: 0.8rem;
    font-weight: 700;
}

.status-received {
    background: #fff4d6;
    color: #805b00;
}

.status-processing {
    background: #e6f0ff;
    color: #174ea6;
}

.status-loaded,
.status-validated {
    background: #e7f7f2;
    color: #12655d;
}

.status-failed,
.status-rejected {
    background: #fef3f2;
    color: #912018;
}

@media (max-width: 720px) {
    .action-heading {
        display: block;
    }

    .action-heading .button-link {
        margin-top: 14px;
    }
}

.alert-warning {
    border-left: 4px solid #d8a12e;
    background: #fff8e5;
    color: #745500;
}

.metadata-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.metadata-grid div {
    padding: 12px;
    background: var(--background);
    border-radius: 8px;
}

.metadata-grid .wide {
    grid-column: 1 / -1;
}

.metadata-grid dt {
    color: var(--muted);
    font-size: 0.85rem;
}

.metadata-grid dd {
    margin: 4px 0 0;
    font-weight: 600;
}

.hash-value {
    overflow-wrap: anywhere;
    font-family: Consolas, monospace;
    font-size: 0.85rem;
}

.validation-section {
    margin-top: 24px;
}

.severity {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.severity-error {
    background: #fef3f2;
    color: #912018;
}

.severity-warning {
    background: #fff8e5;
    color: #745500;
}

.status-explanation {
    margin-bottom: 24px;
    padding: 20px 22px;
    border-radius: 10px;
}

.failure-explanation {
    border-left: 5px solid #b42318;
    background: #fef3f2;
}

.rejection-explanation {
    border-left: 5px solid #d8a12e;
    background: #fff8e5;
}

.success-explanation {
    border-left: 5px solid var(--teal);
    background: #eaf8f5;
}

.technical-details {
    margin-top: 16px;
}

.technical-details summary {
    cursor: pointer;
    font-weight: 600;
}

.technical-details pre {
    overflow-x: auto;
    padding: 12px;
    border-radius: 6px;
    background: #2b3035;
    color: #f4f7f8;
    white-space: pre-wrap;
}

.template-downloads {
    margin: 20px 0;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--background);
}

.template-downloads a {
    display: inline-block;
    margin-left: 14px;
    font-weight: 600;
}

.error-page {
    max-width: 680px;
    margin: 50px auto;
    padding: 42px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    text-align: center;
}

.error-code {
    margin: 0;
    color: var(--blue);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
}