/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V4
 * genre: modern-minimal · tone: professional and restrained · anchor hue: green
 * macrostructure: Index-First · design-system: existing MOSINTER GROUP site · enrichment: none
 * slop: pass (1–58) · contrast: pass (40–41) · mobile: pass (34, 49–57)
 */

.metrics-pixel {
    position: absolute;
    inset-inline-start: -9999px;
}

.error-page {
    --error-surface: var(--bg-light);
    --error-paper: var(--white);
    --error-ink: var(--text-dark);
    --error-copy: var(--text-mid);
    --error-muted: var(--text-light);
    --error-accent: var(--green-main);
    --error-accent-dark: var(--green-dark);
    --error-rule: var(--border);
    --error-focus: var(--green-dark);
    --error-space-xs: 8px;
    --error-space-sm: 12px;
    --error-space-md: 16px;
    --error-space-lg: 24px;
    --error-space-xl: 40px;
    --error-space-2xl: 64px;
    --error-space-3xl: 96px;
    --error-radius: var(--radius);
    --error-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --error-duration: 180ms;
    color: var(--error-ink);
    background: var(--error-paper);
}

.error-intro {
    padding-block:
        clamp(var(--error-space-xl), 6vw, var(--error-space-2xl))
        clamp(var(--error-space-2xl), 9vw, var(--error-space-3xl));
    background: var(--error-surface);
    border-block-end: 1px solid var(--error-rule);
}

.error-intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    align-items: end;
    gap: clamp(var(--error-space-xl), 7vw, var(--error-space-3xl));
    max-width: 1180px;
}

.error-code {
    color: var(--error-accent);
    font-family: var(--font-heading);
    font-size: clamp(5.5rem, 15vw, 10rem);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.06em;
    line-height: 0.82;
}

.error-copy {
    min-width: 0;
}

.error-copy h1 {
    min-width: 0;
    max-width: 15ch;
    margin: 0 0 var(--error-space-lg);
    color: var(--error-ink);
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 4.25rem);
    font-style: normal;
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.04;
    overflow-wrap: anywhere;
}

.error-copy > p {
    max-width: 62ch;
    margin: 0;
    color: var(--error-copy);
    font-size: 1.05rem;
    line-height: 1.65;
}

.error-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--error-space-sm);
    margin-block-start: var(--error-space-xl);
}

.error-actions .btn {
    min-height: 48px;
    justify-content: center;
    white-space: nowrap;
    transition:
        background-color var(--error-duration) var(--error-ease-out),
        border-color var(--error-duration) var(--error-ease-out),
        color var(--error-duration) var(--error-ease-out),
        transform 100ms var(--error-ease-out);
}

.error-actions .btn:focus-visible,
.error-directory-list a:focus-visible {
    outline: 2px solid var(--error-focus);
    outline-offset: 3px;
}

.error-actions .btn:active {
    transform: translateY(1px);
}

.error-actions .btn:disabled,
.error-actions .btn[aria-disabled="true"],
.error-directory-list a[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.55;
    pointer-events: none;
}

.error-directory {
    padding-block: var(--error-space-2xl) var(--error-space-3xl);
    background: var(--error-paper);
}

.error-directory-inner {
    max-width: 920px;
}

.error-directory h2 {
    min-width: 0;
    margin: 0 0 var(--error-space-lg);
    color: var(--error-ink);
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-style: normal;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    overflow-wrap: anywhere;
}

.error-directory-list {
    border-block-start: 1px solid var(--error-rule);
}

.error-directory-list li {
    border-block-end: 1px solid var(--error-rule);
}

.error-directory-list a {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--error-space-lg);
    padding-block: var(--error-space-md);
    color: var(--error-ink);
    font-family: var(--font-heading);
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 600;
    line-height: 1.25;
    white-space: nowrap;
    transition:
        color var(--error-duration) var(--error-ease-out),
        transform 100ms var(--error-ease-out);
}

.error-directory-list a i {
    flex: 0 0 auto;
    color: var(--error-accent);
    font-size: 0.85em;
    transition: transform var(--error-duration) var(--error-ease-out);
}

.error-directory-list a:active {
    transform: translateY(1px);
}

@media (hover: hover) and (pointer: fine) {
    .error-actions .btn:hover {
        box-shadow: none;
        transform: none;
    }

    .error-directory-list a:hover {
        color: var(--error-accent-dark);
    }

    .error-directory-list a:hover i {
        transform: translateX(4px);
    }
}

@media (max-width: 60rem) {
    .error-intro-grid {
        grid-template-columns: minmax(0, 1fr);
        align-items: start;
        gap: var(--error-space-xl);
    }

    .error-code {
        font-size: clamp(5rem, 25vw, 8rem);
    }
}

@media (max-width: 40rem) {
    .error-intro {
        padding-block: var(--error-space-xl) var(--error-space-2xl);
    }

    .error-copy h1 {
        font-size: clamp(2rem, 12vw, 3.25rem);
    }

    .error-copy > p {
        font-size: 1rem;
    }

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

    .error-actions .btn {
        width: 100%;
    }

    .error-directory {
        padding-block: var(--error-space-xl) var(--error-space-2xl);
    }

    .error-directory-list a {
        min-height: 60px;
        padding-block: var(--error-space-sm);
    }
}

@media (prefers-reduced-motion: reduce) {
    .error-actions .btn,
    .error-directory-list a,
    .error-directory-list a i {
        transition-duration: 0ms;
    }
}