/**
 * P4PN Cover Chrome — header progress, timeline, bottom bar, next indicator.
 */

/* Header progress strip (cover pages) */
body.p4pn-cover-page .p4p-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06) !important;
    background: rgba(6, 6, 12, 0.72) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

body.p4pn-cover-page .p4p-header__inner {
    position: relative;
}

.p4pn-header-progress {
    position: fixed;
    top: var(--p4p-header, 72px);
    left: 0;
    right: 0;
    height: 2px;
    z-index: calc(var(--p4pn-z-header, 10000) + 1);
    background: rgba(255, 255, 255, 0.06);
    pointer-events: none;
}

.p4pn-header-progress span {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #e8a87c, #a78bfa);
    box-shadow: 0 0 12px rgba(232, 168, 124, 0.45);
    transition: width 0.55s cubic-bezier(0.19, 1, 0.22, 1);
}

body.p4pn-cover-page .p4p-nav__link.is-active,
body.p4pn-services .p4p-nav__link[href*="/services"] {
    color: #e8a87c;
}

/* Left timeline — services (home-style) */
.p4pn-tl {
    position: fixed;
    left: max(0.65rem, env(safe-area-inset-left));
    top: 50%;
    transform: translateY(-50%);
    z-index: var(--p4pn-z-rail, 4800);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: clamp(0.35rem, 0.8cqi, 0.55rem);
    width: var(--p4pn-tl-width, clamp(7.25rem, 13cqi, 9.5rem));
    min-width: var(--p4pn-tl-width, clamp(7.25rem, 13cqi, 9.5rem));
    max-width: var(--p4pn-tl-width, clamp(7.25rem, 13cqi, 9.5rem));
    padding: var(--p4pn-tl-pad, clamp(0.6rem, 1.1cqi, 0.9rem));
    border-radius: var(--p4pn-tl-radius, clamp(10px, 1.6cqi, 14px));
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(8, 8, 14, 0.88);
    box-shadow: 0 clamp(8px, 1.5cqi, 16px) clamp(24px, 3cqi, 40px) rgba(0, 0, 0, 0.45);
}

.p4pn-tl__orbit {
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(circle at 0% 50%, rgba(232, 168, 124, 0.12), transparent 55%);
    opacity: 0.85;
}

.p4pn-tl__meta {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    position: relative;
    z-index: 1;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.p4pn-tl__idx {
    font-family: var(--p4p-font-tech, monospace);
    font-size: var(--p4pn-tl-idx, clamp(0.82rem, 1.8cqi, 1.05rem));
    font-weight: 800;
    color: #e8a87c;
    letter-spacing: 0.08em;
    min-width: 1.4rem;
}

.p4pn-tl__count {
    font-family: var(--p4p-font-tech, monospace);
    font-size: var(--p4pn-tl-hint, clamp(0.48rem, 1cqi, 0.56rem));
    color: rgba(255, 255, 255, 0.35);
    margin-left: auto;
}

.p4pn-tl__track {
    flex: 1;
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.p4pn-tl__fill {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #e8a87c, #a78bfa);
    transition: width 0.55s cubic-bezier(0.19, 1, 0.22, 1);
}

.p4pn-tl__nodes {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    position: relative;
    z-index: 1;
    max-height: min(42vh, 280px);
    overflow-y: auto;
    scrollbar-width: none;
}

.p4pn-tl__nodes::-webkit-scrollbar {
    display: none;
}

.p4pn-tl__node {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    width: 100%;
    padding: 0.32rem 0.35rem;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    text-align: left;
    transition: background 0.25s, color 0.25s, transform 0.25s;
}

.p4pn-tl__node:hover {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.85);
    transform: translateX(2px);
}

.p4pn-tl__node.is-active {
    background: rgba(232, 168, 124, 0.1);
    color: #e8a87c;
}

.p4pn-tl__node-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.25);
    flex-shrink: 0;
    transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}

.p4pn-tl__node.is-active .p4pn-tl__node-dot {
    background: #e8a87c;
    border-color: #e8a87c;
    box-shadow: 0 0 10px rgba(232, 168, 124, 0.55);
}

.p4pn-tl__node-label {
    font-size: var(--p4pn-tl-label, clamp(0.52rem, 1.15cqi, 0.62rem));
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1.2;
}

.p4pn-tl__hint {
    position: relative;
    z-index: 1;
    font-family: var(--p4p-font-tech, monospace);
    font-size: var(--p4pn-tl-hint, clamp(0.48rem, 1cqi, 0.56rem));
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-align: center;
    color: rgba(167, 139, 250, 0.85);
    padding-top: 0.35rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    min-height: 1.2em;
}

/* Next section chip */
.p4pn-cover-next {
    position: fixed;
    right: max(0.85rem, env(safe-area-inset-right));
    bottom: calc(var(--p4pn-footer-h, 2.85rem) + 0.75rem + env(safe-area-inset-bottom, 0px));
    z-index: var(--p4pn-z-chrome, 4000);
    display: inline-flex;
    align-items: center;
    gap: clamp(0.35rem, 0.8cqi, 0.55rem);
    padding: var(--p4pn-btn-pad-y, clamp(0.5rem, 1.1cqi, 0.72rem)) var(--p4pn-btn-pad-x, clamp(0.95rem, 2.2cqi, 1.35rem));
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(8, 8, 14, 0.88);
    color: #fff;
    text-decoration: none;
    font-size: var(--p4pn-font-xs, clamp(0.62rem, 1.4cqi, 0.72rem));
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: opacity 0.3s, transform 0.35s, border-color 0.3s;
}

.p4pn-cover-next:hover {
    border-color: rgba(232, 168, 124, 0.45);
    transform: translateY(-3px);
}

.p4pn-cover-next.is-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
}

.p4pn-cover-next__arrow {
    width: 1.65rem;
    height: 1.65rem;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: grid;
    place-items: center;
    font-size: 0.85rem;
    animation: p4pnCoverBounce 2.2s ease-in-out infinite;
}

@keyframes p4pnCoverBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
}

/* Bottom bar upgrade */
.p4pn-home-footer {
    padding: 0 clamp(0.85rem, 2.5vw, 1.5rem) max(0.45rem, env(safe-area-inset-bottom));
}

.p4pn-home-footer__inner {
    max-width: min(100%, 56rem);
    margin: 0 auto;
    padding: 0.5rem 1rem;
    border-radius: 14px;
    background: rgba(8, 8, 14, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.09);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.35);
}

.p4pn-home-footer__section {
    font-family: var(--p4p-font-tech, monospace);
    font-size: 0.55rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(167, 139, 250, 0.85);
    flex: 1;
    text-align: center;
}

@media (pointer: coarse) {
    body.p4pn-cover-page.p4pn-home .p4p-tl-minimal,
    body.p4pn-cover-page.p4pn-home .p4pn-cover-next {
        display: none;
    }

    body.p4pn-services .p4pn-cover-next {
        display: none;
    }
}

@media (max-width: 900px) and (pointer: fine) {
    .p4pn-tl__node-label {
        display: none;
    }

    .p4pn-tl {
        min-width: auto;
        padding: 0.65rem 0.45rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .p4pn-cover-next__arrow {
        animation: none;
    }
}