/* ═══ Error Presenter — Modern error UI ═══════════════════════════ */

:root {
    --err-bg: #0b1220;
    --err-bg-soft: #111827;
    --err-card: rgba(255, 255, 255, 0.96);
    --err-card-border: rgba(147, 197, 253, 0.35);
    --err-text: #0f172a;
    --err-muted: #64748b;
    --err-primary: #2563eb;
    --err-primary-soft: #eff6ff;
    --err-danger: #dc2626;
    --err-danger-soft: #fef2f2;
    --err-warn: #d97706;
    --err-radius: 1.125rem;
    --err-shadow: 0 24px 64px rgba(15, 23, 42, 0.18);
    --err-font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --err-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body.err-page {
    margin: 0;
    min-height: 100%;
    font-family: var(--err-font);
    -webkit-font-smoothing: antialiased;
}

body.err-page--production {
    color: var(--err-text);
    background:
        radial-gradient(circle at 10% 10%, rgba(59, 130, 246, 0.18), transparent 42%),
        radial-gradient(circle at 90% 20%, rgba(14, 165, 233, 0.12), transparent 38%),
        linear-gradient(160deg, #eff6ff 0%, #f8fafc 45%, #ffffff 100%);
}

body.err-page--debug {
    color: #e2e8f0;
    background:
        radial-gradient(circle at 15% 0%, rgba(59, 130, 246, 0.22), transparent 40%),
        radial-gradient(circle at 85% 10%, rgba(239, 68, 68, 0.12), transparent 35%),
        linear-gradient(180deg, #0b1220 0%, #111827 100%);
}

.err-shell {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(1rem, 4vw, 2.5rem);
}

.err-shell--debug {
    align-items: flex-start;
}

/* ─── Production card ─────────────────────────────────────────── */

.err-card {
    position: relative;
    width: min(100%, 28rem);
    padding: clamp(1.5rem, 4vw, 2rem);
    border-radius: var(--err-radius);
    background: var(--err-card);
    border: 1px solid var(--err-card-border);
    box-shadow: var(--err-shadow);
    text-align: center;
    overflow: hidden;
}

.err-card-glow {
    position: absolute;
    inset: -40% auto auto 50%;
    width: 16rem;
    height: 16rem;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(59, 130, 246, 0.16), transparent 68%);
    pointer-events: none;
}

.err-icon-wrap {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 1rem;
    border: 1px solid transparent;
}

.err-icon-wrap--warn {
    color: var(--err-warn);
    background: #fffbeb;
    border-color: #fde68a;
}

.err-icon {
    width: 2rem;
    height: 2rem;
}

.err-title {
    margin: 0 0 0.625rem;
    font-size: clamp(1.375rem, 4vw, 1.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #1e3a8a;
}

.err-lead {
    margin: 0 0 1.25rem;
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--err-muted);
}

.err-ref {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    padding: 0.75rem 1rem;
    border-radius: 0.875rem;
    background: var(--err-primary-soft);
    border: 1px solid rgba(191, 219, 254, 0.9);
}

.err-ref-label {
    width: 100%;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #64748b;
}

.err-ref-code {
    font-family: var(--err-mono);
    font-size: 0.9375rem;
    font-weight: 700;
    color: #1d4ed8;
    background: transparent;
}

.err-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.err-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4375rem;
    padding: 0.625rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    border-radius: 9999px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.err-btn svg {
    width: 1rem;
    height: 1rem;
}

.err-btn--primary {
    color: #fff;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28);
}

.err-btn--soft {
    color: #1d4ed8;
    background: #eff6ff;
    border-color: #bfdbfe;
}

.err-btn--ghost {
    color: #475569;
    background: #fff;
    border-color: #e2e8f0;
}

.err-btn--xs {
    padding: 0.3125rem 0.625rem;
    font-size: 0.6875rem;
}

@media (hover: hover) {
    .err-btn:hover {
        transform: translateY(-1px);
    }
}

.err-foot {
    margin: 1.125rem 0 0;
    font-size: 0.75rem;
    line-height: 1.55;
    color: #94a3b8;
}

/* ─── Debug layout ────────────────────────────────────────────── */

.err-debug-layout {
    width: min(100%, 56rem);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.err-debug-header {
    display: grid;
    gap: 0.875rem;
    padding: 1.25rem 1.375rem;
    border-radius: var(--err-radius);
    background: rgba(15, 23, 42, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.18);
    backdrop-filter: blur(12px);
}

.err-debug-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4375rem;
    width: fit-content;
    padding: 0.25rem 0.625rem;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.28);
    border-radius: 9999px;
}

.err-debug-dot {
    width: 0.4375rem;
    height: 0.4375rem;
    border-radius: 50%;
    background: #ef4444;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.18);
}

.err-debug-title {
    margin: 0 0 0.375rem;
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    font-weight: 800;
    color: #f8fafc;
}

.err-debug-message {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.55;
    color: #cbd5e1;
}

.err-debug-location {
    margin: 0.625rem 0 0;
    font-size: 0.8125rem;
}

.err-debug-location code,
.err-info-card code,
.err-code-block {
    font-family: var(--err-mono);
}

.err-debug-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4375rem;
}

.err-ref-pill,
.err-time-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.3125rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 9999px;
    border: 1px solid rgba(148, 163, 184, 0.22);
}

.err-ref-pill {
    color: #93c5fd;
    background: rgba(59, 130, 246, 0.12);
}

.err-time-pill {
    color: #94a3b8;
    background: rgba(148, 163, 184, 0.08);
}

.err-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.err-tab {
    padding: 0.5rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: inherit;
    color: #94a3b8;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid rgba(148, 163, 184, 0.16);
    border-radius: 9999px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.err-tab.is-active {
    color: #eff6ff;
    background: rgba(59, 130, 246, 0.22);
    border-color: rgba(96, 165, 250, 0.45);
}

.err-panels {
    padding: 1rem 1.125rem 1.125rem;
    border-radius: var(--err-radius);
    background: rgba(15, 23, 42, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.err-panel[hidden] {
    display: none !important;
}

.err-panel-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-size: 0.75rem;
    color: #94a3b8;
}

.err-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.err-info-card {
    padding: 0.875rem 1rem;
    border-radius: 0.875rem;
    background: rgba(2, 6, 23, 0.45);
    border: 1px solid rgba(148, 163, 184, 0.14);
}

.err-info-card h3 {
    margin: 0 0 0.625rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: #e2e8f0;
}

.err-info-card dl {
    margin: 0;
    display: grid;
    gap: 0.4375rem;
}

.err-info-card dt {
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #64748b;
}

.err-info-card dd {
    margin: 0;
    font-size: 0.8125rem;
    color: #cbd5e1;
    word-break: break-word;
}

.err-wrap {
    word-break: break-word;
}

.err-trace-list {
    list-style: none;
    margin: 0 0 0.75rem;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4375rem;
    max-height: 16rem;
    overflow: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.45) transparent;
}

.err-trace-item {
    display: flex;
    gap: 0.625rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.625rem;
    background: rgba(2, 6, 23, 0.45);
    border: 1px solid rgba(148, 163, 184, 0.12);
}

.err-trace-index {
    flex-shrink: 0;
    font-size: 0.6875rem;
    font-weight: 700;
    color: #64748b;
}

.err-trace-body strong {
    display: block;
    font-size: 0.8125rem;
    color: #e2e8f0;
    margin-bottom: 0.1875rem;
}

.err-trace-body code {
    font-size: 0.6875rem;
    color: #93c5fd;
}

.err-code-block {
    margin: 0;
    padding: 0.875rem 1rem;
    max-height: 12rem;
    overflow: auto;
    font-size: 0.6875rem;
    line-height: 1.55;
    color: #cbd5e1;
    background: #020617;
    border: 1px solid rgba(148, 163, 184, 0.14);
    border-radius: 0.625rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.err-empty-panel {
    margin: 0 0 0.75rem;
    font-size: 0.8125rem;
    color: #94a3b8;
}

.err-debug-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.err-foot--debug {
    margin: 0;
    text-align: right;
}

/* Embedded in AJAX content area */
#ajax-content > .err-shell,
#ajax-content .err-shell {
    min-height: auto;
    padding: 0;
}

#ajax-content .err-card {
    width: 100%;
    box-shadow: 0 8px 28px rgba(37, 99, 235, 0.08);
}

#ajax-content .err-debug-layout {
    width: 100%;
}

@media (max-width: 767.98px) {
    .err-grid-2 {
        grid-template-columns: 1fr;
    }

    .err-debug-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .err-foot--debug {
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .err-btn {
        transition: none;
    }
}