:root {
    --bg: #0f1116;
    --panel: #141824;
    --panel2: #101422;
    --text: #e7eaf0;
    --muted: #aab2c0;
    --line: rgba(255, 255, 255, 0.08);
    --focus: rgba(111, 168, 255, 0.35);
    --primary: #5aa2ff;
    --accent: #7ee787;
    --danger: #ff6b6b;
    --chip: rgba(255, 255, 255, 0.06);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --radius: 12px;
    --font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    background: radial-gradient(1200px 800px at 20% 10%, rgba(90, 162, 255, 0.08), transparent 60%),
        radial-gradient(900px 600px at 80% 0%, rgba(126, 231, 135, 0.06), transparent 55%),
        var(--bg);
    color: var(--text);
    font-family: var(--font);
}

.ep-app {
    display: flex;
    height: 100vh;
}

.ep-rail {
    width: 340px;
    border-right: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 30%), var(--panel2);
    display: flex;
    flex-direction: column;
}

.ep-rail-header {
    padding: 14px 14px 10px;
    border-bottom: 1px solid var(--line);
}

.ep-rail-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--muted);
    letter-spacing: 0.02em;
    margin-bottom: 10px;
}

.ep-search {
    width: 100%;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    border-radius: 10px;
    padding: 10px 10px;
    outline: none;
}

.ep-search:focus {
    border-color: rgba(90, 162, 255, 0.35);
    box-shadow: 0 0 0 3px var(--focus);
}

.ep-list {
    padding: 10px;
    overflow: auto;
    flex: 1 1 auto;
}

.ep-item {
    display: flex;
    gap: 10px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    cursor: pointer;
    margin-bottom: 10px;
}

.ep-item:hover {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.05);
}

.ep-item.is-active {
    border-color: rgba(90, 162, 255, 0.5);
    background: rgba(90, 162, 255, 0.10);
}

.ep-item .col {
    flex: 1 1 auto;
    min-width: 0;
}

.ep-item .title {
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ep-item .meta {
    margin-top: 3px;
    font-size: 12px;
    color: var(--muted);
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--chip);
    border: 1px solid var(--line);
}

.ep-tree-wrap {
    border-top: 1px solid var(--line);
    padding: 10px 12px 14px;
}

.ep-tree-title {
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 8px;
}

.ep-tree {
    min-height: 110px;
    border: 1px dashed rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.12);
}

.ep-main {
    flex: 1 1 auto;
    overflow: auto;
}

.ep-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: linear-gradient(180deg, rgba(20, 24, 36, 0.92), rgba(20, 24, 36, 0.82));
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.ep-header-row {
    padding: 14px 16px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    justify-content: space-between;
}

.ep-meta {
    display: grid;
    grid-template-columns: 160px 1fr 120px 120px 140px 110px 160px 160px 180px 160px 160px;
    gap: 10px;
    align-items: end;
    flex: 1 1 auto;
}

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

.field-wide {
    grid-column: span 2;
}

.field label {
    font-size: 12px;
    color: var(--muted);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    border-radius: 10px;
    padding: 9px 10px;
    outline: none;
}

textarea {
    resize: vertical;
    line-height: 1.35;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(90, 162, 255, 0.35);
    box-shadow: 0 0 0 3px var(--focus);
}

input.is-dirty,
select.is-dirty,
textarea.is-dirty {
    border-color: rgba(126, 231, 135, 0.55);
}

.ep-actions {
    flex: 0 0 auto;
    min-width: 240px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ep-actions-top {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.btn {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    border-radius: 12px;
    padding: 9px 12px;
    cursor: pointer;
}

.btn:hover {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.06);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-primary {
    border-color: rgba(90, 162, 255, 0.45);
    background: rgba(90, 162, 255, 0.12);
}

.btn-accent {
    border-color: rgba(126, 231, 135, 0.45);
    background: rgba(126, 231, 135, 0.10);
}

.btn-ghost {
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.02);
}

.ep-timestamps {
    font-size: 12px;
    color: var(--muted);
    display: grid;
    gap: 6px;
    justify-content: end;
}

.ep-timestamps .k {
    margin-right: 6px;
}

.ep-tabs {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
    position: sticky;
    top: 94px;
    z-index: 9;
}

.ep-tab {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    border-radius: 999px;
    padding: 7px 12px;
    cursor: pointer;
    font-size: 13px;
}

.ep-tab.is-active {
    border-color: rgba(90, 162, 255, 0.5);
    background: rgba(90, 162, 255, 0.12);
}

.ep-panels {
    padding: 16px;
}

.ep-panel {
    display: none;
}

.ep-panel.is-active {
    display: block;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

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

.field-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.ep-empty {
    padding: 24px;
}

.ep-empty-card {
    max-width: 720px;
    margin: 24px auto;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.03);
}

.ep-empty-title {
    font-weight: 800;
    margin-bottom: 6px;
}

.ep-empty-sub {
    color: var(--muted);
}

@media (max-width: 1100px) {
    .ep-meta {
        grid-template-columns: 1fr 1fr;
    }

    .field-wide {
        grid-column: span 2;
    }

    .ep-tabs {
        top: 166px;
        flex-wrap: wrap;
    }
}