/* ==========================================================================
   Nexuuscore A11y Information Tooltip Component
   Deep Slate (#1e293b, #0f172a) & Sovereign Emerald (#047857, #10b981)
   ========================================================================== */

.field-info-btn {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.35);
    color: #34d399;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 700;
    cursor: help;
    margin-left: 0.35rem;
    padding: 0;
    line-height: 1;
    position: relative;
    user-select: none;
    vertical-align: middle;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    -webkit-tap-highlight-color: transparent;
    font-family: inherit;
}

.field-info-btn:hover,
.field-info-btn:focus,
.field-info-btn.active,
.field-info-btn[aria-expanded="true"] {
    background: #10b981;
    color: #0f172a;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    transform: scale(1.1);
    outline: none;
}

/* Accessible DOM Tooltip Box (High-Contrast Theme-Safe) */
.field-tooltip,
.field-info-btn .field-tooltip,
.field-info-btn.active .field-tooltip,
.field-info-btn:hover .field-tooltip,
.field-info-btn:focus .field-tooltip,
.field-info-btn[aria-expanded="true"] .field-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: #0f172a !important;
    color: #f8fafc !important;
    border: 1px solid #10b981 !important;
    border-radius: 8px;
    padding: 0.65rem 0.95rem;
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.5;
    white-space: normal;
    width: max-content;
    max-width: min(320px, calc(100vw - 32px));
    box-shadow: 0 12px 32px -4px rgba(0, 0, 0, 0.95), 0 0 16px rgba(16, 185, 129, 0.35) !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
    z-index: 999999 !important;
    text-transform: none !important;
    letter-spacing: normal;
    text-align: left;
    text-shadow: none !important;
}

.field-tooltip *,
.field-info-btn .field-tooltip * {
    color: #f8fafc !important;
}

/* Tooltip Downward Arrow */
.field-tooltip::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: #0f172a transparent transparent transparent !important;
}

/* Hover safety bridge */
.field-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 10px;
}

/* Reveal State on Hover, Focus, or Programmatic Active / aria-expanded */
.field-info-btn:hover .field-tooltip,
.field-info-btn:focus .field-tooltip,
.field-info-btn:focus-within .field-tooltip,
.field-info-btn.active .field-tooltip,
.field-info-btn[aria-expanded="true"] .field-tooltip {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateX(-50%) translateY(0) !important;
}

/* Visual Requirement Indicators */
.input-required-mark {
    color: #f87171;
    font-weight: 700;
    margin-left: 2px;
}

.badge-optional {
    display: inline-block;
    background: rgba(51, 65, 85, 0.4);
    border: 1px solid rgba(71, 85, 105, 0.4);
    color: #94a3b8;
    font-size: 0.68rem;
    font-weight: 500;
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: 6px;
    letter-spacing: 0.02em;
    vertical-align: middle;
}