:root {
    --oied-bg: #0f1720;
    --oied-surface: #18232e;
    --oied-surface-raised: #202d39;
    --oied-border: #3b4b59;

    --oied-text: #f3f6f8;
    --oied-text-secondary: #b7c2cb;
    --oied-text-muted: #84929d;

    --oied-accent: #2f6fa3;
    --oied-accent-light: #5d98c7;

    --oied-normal: #3e9b63;
    --oied-watch: #d6a72d;
    --oied-attention: #c84b4b;
    --oied-information: #3e83b8;
    --oied-historical: #78848d;

    --oied-radius: 4px;
    --oied-gap: 16px;
    --oied-small-gap: 8px;

    --oied-header-height: 64px;
    --oied-nav-width: 230px;

    --oied-font:
        Arial,
        Helvetica,
        sans-serif;
}

* {
    box-sizing: border-box;
}

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

body {
    background: var(--oied-bg);
    color: var(--oied-text);
    font-family: var(--oied-font);
    font-size: 14px;
    line-height: 1.45;
}

a {
    color: var(--oied-accent-light);
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

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

/* APPLICATION SHELL */

.oied-app-shell {
    min-height: 100vh;
    background: var(--oied-bg);
}

.oied-header {
    min-height: var(--oied-header-height);
    display: flex;
    align-items: center;
    gap: var(--oied-gap);
    padding: 10px 18px;
    background: var(--oied-surface);
    border-bottom: 1px solid var(--oied-border);
}

.oied-app-body {
    display: grid;
    grid-template-columns:
        var(--oied-nav-width)
        minmax(0, 1fr);
    align-items: start;
    width: 100%;
}

.oied-navigation {
    width: var(--oied-nav-width);
    min-height: 0;
    height: auto;
    align-self: start;
    padding: 14px;
    background: var(--oied-surface);
    border-right: 1px solid var(--oied-border);
    border-bottom: 1px solid var(--oied-border);
}

.oied-work-area {
    min-width: 0;
    align-self: start;
    padding: 20px;
}

/* STANDARD SURFACES */

.oied-status-card,
.oied-quick-info,
.oied-snapshot-column,
.oied-detail-panel,
.oied-operational-timeline,
.oied-before-action-after,
.oied-related-records,
.oied-evidence-chain,
.oied-notification-panel,
.oied-permission-controls,
.oied-form-container,
.oied-audit-panel,
.oied-historical-comparison,
.oied-memory-knowledge,
.oied-sharing-status,
.oied-value-summary,
.oied-role-view,
.oied-responsive-container {
    background: var(--oied-surface);
    border: 1px solid var(--oied-border);
    border-radius: var(--oied-radius);
}

.oied-status-card,
.oied-quick-info,
.oied-snapshot-column,
.oied-detail-panel,
.oied-operational-timeline,
.oied-related-records,
.oied-evidence-chain,
.oied-notification-panel,
.oied-permission-controls,
.oied-form-container,
.oied-audit-panel,
.oied-historical-comparison,
.oied-memory-knowledge,
.oied-sharing-status,
.oied-value-summary,
.oied-role-view,
.oied-responsive-container {
    padding: 16px;
}

/* STATUS LANGUAGE */

.oied-status-normal,
.oied-value-normal {
    border-left: 4px solid var(--oied-normal);
}

.oied-status-watch,
.oied-value-watch {
    border-left: 4px solid var(--oied-watch);
}

.oied-status-attention,
.oied-value-attention {
    border-left: 4px solid var(--oied-attention);
}

.oied-status-information,
.oied-value-information {
    border-left: 4px solid var(--oied-information);
}

.oied-status-historical,
.oied-value-historical {
    border-left: 4px solid var(--oied-historical);
}

.oied-value-verified {
    border-left: 4px solid var(--oied-normal);
}

/* SNAPSHOT */

.oied-snapshot-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--oied-gap);
}

.oied-snapshot-column {
    min-width: 0;
}

/* RESPONSIVE CONTAINERS */

.oied-responsive-grid {
    display: grid;
    gap: var(--oied-gap);
}

.oied-responsive-columns-1 {
    grid-template-columns: minmax(0, 1fr);
}

.oied-responsive-columns-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.oied-responsive-columns-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.oied-responsive-item {
    min-width: 0;
}

/* MEMORY / KNOWLEDGE */

.oied-memory-knowledge-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--oied-gap);
}

.oied-memory-section,
.oied-knowledge-section {
    padding: 14px;
    background: var(--oied-surface-raised);
    border: 1px solid var(--oied-border);
}

.oied-memory-definition,
.oied-knowledge-definition {
    margin-bottom: 12px;
    color: var(--oied-text-secondary);
}

.oied-memory-item,
.oied-knowledge-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--oied-border);
}

/* BEFORE ACTION AFTER */

.oied-before-action-after {
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        auto
        minmax(0, 1fr)
        auto
        minmax(0, 1fr);
    gap: var(--oied-small-gap);
    align-items: stretch;
}

/* HISTORICAL COMPARISON */

.oied-history-column-headings,
.oied-history-row {
    display: grid;
    grid-template-columns:
        minmax(140px, 1fr)
        minmax(120px, 1fr)
        minmax(120px, 1fr)
        110px;
    gap: 10px;
    padding: 10px;
}

.oied-history-column-headings {
    background: var(--oied-surface-raised);
    font-weight: bold;
}

.oied-history-row {
    border-bottom: 1px solid var(--oied-border);
}

.oied-history-changed {
    border-left: 3px solid var(--oied-watch);
}

.oied-history-unchanged {
    border-left: 3px solid var(--oied-historical);
}

/* FORMS */

.oied-form-row {
    margin-bottom: 16px;
}

.oied-form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.oied-form-control {
    width: 100%;
    padding: 9px 10px;
    color: var(--oied-text);
    background: var(--oied-bg);
    border: 1px solid var(--oied-border);
    border-radius: var(--oied-radius);
}

.oied-form-control:focus {
    outline: 2px solid var(--oied-accent);
    outline-offset: 1px;
}

.oied-form-required,
.oied-form-error {
    color: #ff7b7b;
}

.oied-form-help {
    margin-top: 4px;
    color: var(--oied-text-secondary);
}

.oied-form-error {
    margin-top: 4px;
}

.oied-form-validation-summary {
    margin-bottom: 16px;
    padding: 12px;
    border-left: 4px solid var(--oied-attention);
    background: var(--oied-surface-raised);
}

.oied-form-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.oied-form-submit,
.oied-form-cancel {
    display: inline-block;
    padding: 9px 14px;
    border-radius: var(--oied-radius);
}

.oied-form-submit {
    color: white;
    background: var(--oied-accent);
    border: 1px solid var(--oied-accent-light);
    cursor: pointer;
}

.oied-form-cancel {
    color: var(--oied-text);
    background: var(--oied-surface-raised);
    border: 1px solid var(--oied-border);
}

/* LISTS / TIMELINES / AUDIT */

.oied-record-item,
.oied-notification-item,
.oied-audit-entry,
.oied-timeline-entry,
.oied-related-record,
.oied-evidence-step {
    padding: 10px 0;
    border-bottom: 1px solid var(--oied-border);
}

.oied-audit-created,
.oied-audit-restored,
.oied-audit-verified,
.oied-audit-validated {
    border-left: 3px solid var(--oied-normal);
    padding-left: 10px;
}

.oied-audit-archived {
    border-left: 3px solid var(--oied-historical);
    padding-left: 10px;
}

.oied-audit-updated,
.oied-audit-information {
    border-left: 3px solid var(--oied-information);
    padding-left: 10px;
}

/* HEADINGS */

.oied-work-area h1,
.oied-work-area h2,
.oied-work-area h3,
.oied-status-card h2,
.oied-detail-panel h2,
.oied-form-container h2,
.oied-audit-panel h2,
.oied-value-summary h2,
.oied-role-view h2 {
    margin-top: 0;
}

/* TABLET */

@media (max-width: 1100px) {
    .oied-snapshot-grid,
    .oied-responsive-columns-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .oied-history-column-headings,
    .oied-history-row {
        grid-template-columns:
            minmax(120px, 1fr)
            minmax(100px, 1fr)
            minmax(100px, 1fr)
            90px;
    }
}

/* MOBILE */

@media (max-width: 760px) {
    .oied-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .oied-app-body {
        display: block;
    }

    .oied-navigation {
        width: 100%;
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--oied-border);
    }

    .oied-work-area {
        padding: 12px;
    }

    .oied-snapshot-grid,
    .oied-responsive-columns-2,
    .oied-responsive-columns-3,
    .oied-memory-knowledge-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .oied-before-action-after {
        grid-template-columns: minmax(0, 1fr);
    }

    .oied-history-column-headings {
        display: none;
    }

    .oied-history-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .oied-form-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .oied-form-submit,
    .oied-form-cancel {
        width: 100%;
        text-align: center;
    }
}