/* =======================================
   PEI Tabs – branded, stacked & animated
   ======================================= */

.pei-tabs {
    padding: 2.5rem 0 3rem;
}

.pei-tabs .container {
    /* inherits global .container */
}

/* ---------- Tab Nav ---------- */

.pei-tabs__nav {
    position: relative;
    display: flex;
    flex-wrap: nowrap; /* keep tabs on one line; allow horizontal scroll if needed */
    gap: 8px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.06);
    margin-bottom: 16px;
    padding-bottom: 4px;

    /* horizontal scroll only */
    overflow-x: auto;
    overflow-y: hidden;

    /* hide scrollbars cross-browser */
    -ms-overflow-style: none;  /* IE/Edge */
    scrollbar-width: none;     /* Firefox */
}

/* hide scrollbar for WebKit */
.pei-tabs__nav::-webkit-scrollbar {
    display: none;
}

/* Base tab button */
.pei-tabs__tab {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--secondary);
    padding: 10px 16px;
    border-radius: 6px 6px 0 0;
    border: 1px solid transparent;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    position: relative;
    transition:
            color 0.15s ease,
            background-color 0.15s ease,
            border-color 0.15s ease,
            transform 0.1s ease;
}

/* Hover state */
.pei-tabs__tab:hover {
    background: rgba(0, 0, 0, 0.02);
    color: var(--secondary);
}

/* Active tab look */
.pei-tabs__tab.is-active {
    background: #ffffff;
    color: var(--secondary);
    border-color: rgba(0, 0, 0, 0.08);
}

/* Sliding gold indicator bar (one per nav, moved by JS) */
.pei-tabs__indicator {
    position: absolute;
    bottom: -3px;
    height: 3px;
    background: var(--primary);
    border-radius: 999px;
    width: 0;
    transform: translateX(0);
    transition:
            transform 0.25s ease-out,
            width 0.25s ease-out;
    pointer-events: none;
}

/* ---------- Tab Panes ---------- */

.pei-tabs__panes {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}

/*
  Stacked panes:
  - All panes are absolutely positioned on top of each other
  - Only the active pane is visible and interactive
  - Container height is fixed via JS to tallest pane, so the page doesn't move
*/
.pei-tabs__pane {
    position: absolute;
    inset: 0;
    padding: 16px;
    color: var(--secondary);
    opacity: 0;
    pointer-events: none;
    transform: translateX(40px);
    background: #ffffff;
    border: 1px solid var(--accent);
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
    transition:
            opacity 0.26s ease-out,
            transform 0.26s ease-out;
}

/* Active pane is on top, visible & interactive */
.pei-tabs__pane.is-active {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

/* Extra "pop" animation when a pane becomes active (triggered via class) */
.pei-tabs__pane--anim-in {
    animation: peiTabsFadeSlideIn 260ms ease-out both;
}

/* ---------- Media + Content ---------- */

.pei-tabs__media {
    margin-bottom: 12px;
}

.pei-tabs__media img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 10px;
}

/* Text content */
.pei-tabs__content p {
    margin: 0 0 0.85rem;
    line-height: 1.6;
    color: var(--secondary);
}

.pei-tabs__content p:last-child {
    margin-bottom: 0;
}

/* Headings inside tab content */
.pei-tabs__content h2,
.pei-tabs__content h3,
.pei-tabs__content h4 {
    margin-top: 0;
    margin-bottom: 0.6rem;
    color: var(--secondary);
}

.pei-tabs__content h2 {
    font-size: 1.35rem;
}

.pei-tabs__content h3 {
    font-size: 1.15rem;
}

.pei-tabs__content h4 {
    font-size: 1.05rem;
}

/* Lists inside panes */
.pei-tabs__content ul {
    padding-left: 1.2rem;
    margin: 0.25rem 0 0.85rem;
}

.pei-tabs__content li {
    margin-bottom: 0.4rem;
}

/* Links inside tab content – use theme gold */
.pei-tabs__content a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

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

/* ---------- Responsive layout ---------- */

@media (min-width: 768px) {
    .pei-tabs {
        padding: 3rem 0 3.5rem;
    }

    .pei-tabs__pane {
        padding: 20px 22px;
    }
}

/* Desktop: grid layout inside the active pane (visually, not for positioning) */
@media (min-width: 992px) {
    .pei-tabs__pane .pei-tabs__media {
        margin-bottom: 0;
    }

    .pei-tabs__pane .pei-tabs__content-wrapper {
        display: grid;
        grid-template-columns: 1.05fr 1.4fr;
        gap: 20px;
        align-items: flex-start;
    }
}

/* ---------- Accessibility and focus ---------- */

.pei-tabs__tab:focus-visible {
    outline: 3px solid #2b6cb0;
    outline-offset: 2px;
}

/* ---------- Keyframes ---------- */

@keyframes peiTabsFadeSlideIn {
    from {
        opacity: 0;
        transform: translateX(18px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}