/* =========================================================
   PEV LABS — SHARED DESIGN SYSTEM
   Loaded on every page, before the page-specific stylesheet.
   Design tokens, navbar, footer, buttons, animation utilities.
   ========================================================= */

:root {
    --bg: #0a0f14;
    --bg-2: #0f151c;
    --text: #e9eef2;
    --muted: #b8c3cc;
    --card: #131a22;
    --stroke: #223040;
    --border: #223040;
    --accent: #17a2ff;
    --accent-2: #67e8a6;
    --accent-3: #ff6b6b;
    --accent-muted: rgba(23, 162, 255, 0.1);
    --radius: 14px;
    --radius-sm: 8px;
    --maxw: min(96vw, 1440px);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 8px 28px rgba(23, 162, 255, 0.25);
    --transition-fast: 150ms;
    --transition-medium: 280ms;
    --transition-slow: 480ms;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --nav-h: 76px;
}

/* =========================================================
   RESET / BASE
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scrollbar-color: var(--stroke) var(--bg);
}

body {
    font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img, video { max-width: 100%; height: auto; display: block; }

a { color: inherit; }

::selection {
    background: var(--accent);
    color: #04121e;
}

/* Custom scrollbar (WebKit) */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: var(--stroke);
    border-radius: 8px;
    border: 3px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Accessible focus ring everywhere, without adding an outline for mouse users */
:focus { outline: none; }
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Skip-to-content link */
.skip-link {
    position: fixed;
    top: -60px;
    left: 12px;
    z-index: 100000;
    background: var(--accent);
    color: #04121e;
    font-weight: 700;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: top var(--transition-fast) var(--ease);
}
.skip-link:focus {
    top: 12px;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* =========================================================
   PAGE LOAD TRANSITION — pure CSS, no JS dependency (no FOUC risk)
   ========================================================= */
body {
    /* fill-mode: backwards (not both/forwards) — applying the "to" keyframe
       permanently after the animation ends would leave a persistent
       `transform` on <body>, which turns it into the containing block for
       every position:fixed descendant (navbar, back-to-top, mobile nav
       backdrop) and breaks their fixed-to-viewport behavior after scroll. */
    animation: pev-fade-in 560ms var(--ease-out) backwards;
}
@keyframes pev-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    body { animation: none; }
}

/* =========================================================
   SCROLL-REVEAL ANIMATION UTILITIES
   ========================================================= */
.reveal, .reveal-up, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 0;
    transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out), filter 700ms var(--ease-out);
    will-change: transform, opacity;
}
.reveal-up { transform: translateY(36px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-scale { opacity: 0; transform: scale(0.94); }
.reveal { transform: translateY(18px); }

.reveal.in-view,
.reveal-up.in-view,
.reveal-left.in-view,
.reveal-right.in-view,
.reveal-scale.in-view {
    opacity: 1;
    transform: none;
}

.stagger > * {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.stagger.in-view > * { opacity: 1; transform: none; }
.stagger.in-view > *:nth-child(1) { transition-delay: 0ms; }
.stagger.in-view > *:nth-child(2) { transition-delay: 80ms; }
.stagger.in-view > *:nth-child(3) { transition-delay: 160ms; }
.stagger.in-view > *:nth-child(4) { transition-delay: 240ms; }
.stagger.in-view > *:nth-child(5) { transition-delay: 320ms; }
.stagger.in-view > *:nth-child(6) { transition-delay: 400ms; }
.stagger.in-view > *:nth-child(n+7) { transition-delay: 460ms; }

@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-up, .reveal-left, .reveal-right, .reveal-scale, .stagger > * {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* Image fade-in once loaded (paired with main.js) */
img[data-fade] { opacity: 0; transition: opacity 560ms var(--ease-out); }
img[data-fade].is-loaded { opacity: 1; }

/* =========================================================
   NAVBAR — glass, single source of truth
   ========================================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(4, 8, 12, 0.55) 0%, rgba(4, 8, 12, 0) 100%);
    transition: background var(--transition-medium) var(--ease), box-shadow var(--transition-medium) var(--ease), backdrop-filter var(--transition-medium) var(--ease);
}
.navbar.scrolled {
    background: rgba(8, 13, 18, 0.82);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06), 0 12px 30px rgba(0, 0, 0, 0.35);
}
#pev-scroll-progress {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 2px;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transition: width 100ms linear;
    pointer-events: none;
}
@media (prefers-reduced-motion: reduce) {
    #pev-scroll-progress { transition: none; }
}
.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    width: 100%;
    position: relative;
    min-height: var(--nav-h);
}
.logo { padding: 10px 0; transition: transform var(--transition-fast) var(--ease); }
.logo:hover { transform: scale(1.03); }
.logo-img { height: 42px; display: block; object-fit: contain; }

.nav-menu {
    list-style: none;
    margin: 0 auto;
    display: flex;
    gap: 28px;
    align-items: center;
    padding: 0;
}
.nav-menu a {
    color: rgba(255, 255, 255, 0.82);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    padding: 9px 14px;
    position: relative;
    border-radius: 999px;
    background: transparent;
    transition: color var(--transition-fast) var(--ease), background var(--transition-fast) var(--ease);
}
.nav-menu > li > a:not(.shop-btn)::after {
    content: "";
    position: absolute;
    left: 14px;
    bottom: 2px;
    width: calc(100% - 28px);
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium) var(--ease-out);
}
.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: #fff;
    background: var(--accent-muted);
}
.nav-menu > li > a:hover::after,
.nav-menu > li > a.active::after {
    transform: scaleX(1);
}
.navbar.scrolled .nav-menu a { color: rgba(255, 255, 255, 0.82); }
.navbar.scrolled .nav-menu a:hover,
.navbar.scrolled .nav-menu a.active { color: #fff; }

.nav-menu li { position: relative; }
.has-dropdown > a { padding-right: 20px; display: inline-flex; align-items: center; gap: 6px; }
.has-dropdown > a::before {
    content: "";
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform var(--transition-fast) var(--ease-out);
    flex-shrink: 0;
}
.has-dropdown.open > a::before,
.has-dropdown:hover > a::before { transform: rotate(-135deg); }
/* neutralize any legacy ::after arrow markup still present in old page CSS */
.has-dropdown > a::after { display: none !important; }
.nav-menu > li.has-dropdown > a:not(.shop-btn)::after { display: none !important; content: none !important; }

.dropdown {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    min-width: 240px;
    background: rgba(12, 17, 24, 0.98);
    border: 1px solid var(--stroke);
    border-radius: 12px;
    padding: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    list-style: none;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 6px);
    transition: opacity var(--transition-medium) var(--ease-out), transform var(--transition-medium) var(--ease-out), visibility var(--transition-medium);
}
.has-dropdown:hover > .dropdown,
.has-dropdown.open > .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}
.dropdown li { padding: 0; }
.dropdown a {
    display: block;
    padding: 10px 14px;
    color: var(--muted);
    font-weight: 500;
    font-size: 14.5px;
    border-radius: 8px;
    transition: background var(--transition-fast) var(--ease), color var(--transition-fast) var(--ease), padding-left var(--transition-fast) var(--ease);
}
.dropdown a::after { display: none !important; }
.dropdown a:hover, .dropdown a.active {
    background: rgba(23, 162, 255, 0.1);
    color: #fff;
    padding-left: 18px;
}
.dropdown a.active { color: var(--accent); }

.nav-right { margin-left: 20px; display: flex; align-items: center; }
.shop-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #04121e !important;
    padding: 10px 20px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    font-size: 14.5px;
    border: 1px solid transparent;
    transition: transform var(--transition-fast) var(--ease-out), box-shadow var(--transition-fast) var(--ease-out), background var(--transition-fast) var(--ease);
}
.shop-btn::after { display: none !important; }
.shop-btn:hover {
    background: var(--accent-2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    cursor: pointer;
    z-index: 1201;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}
.nav-toggle .hamburger,
.nav-toggle .hamburger::before,
.nav-toggle .hamburger::after {
    background: #fff;
    border-radius: 2px;
    transition: transform var(--transition-medium) var(--ease-out), opacity var(--transition-fast) var(--ease), background var(--transition-fast) var(--ease);
}
.nav-toggle .hamburger {
    display: inline-block;
    width: 24px;
    height: 2px;
    position: relative;
}
.nav-toggle .hamburger::before,
.nav-toggle .hamburger::after {
    content: "";
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
}
.nav-toggle .hamburger::before { top: -8px; }
.nav-toggle .hamburger::after { top: 8px; }
.nav-toggle.open .hamburger { background: transparent; }
.nav-toggle.open .hamburger::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open .hamburger::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 880px) {
    .nav-toggle { display: inline-flex; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); }
    .nav-right { position: absolute; right: 76px; top: 50%; transform: translateY(-50%); }
    .shop-btn { padding: 8px 16px; font-size: 14px; }

    .nav-menu {
        position: fixed;
        z-index: 1100;
        top: 0; right: 0; bottom: 0;
        width: min(86vw, 380px);
        height: 100vh;
        background: rgba(6, 10, 14, 0.98);
        backdrop-filter: blur(18px);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        margin: 0;
        padding: calc(var(--nav-h) + 20px) 24px 40px;
        transform: translateX(100%);
        transition: transform var(--transition-slow) var(--ease-out);
        overflow-y: auto;
        box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
    }
    .nav-menu.open { transform: translateX(0); }
    .nav-menu li { width: 100%; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
    .nav-menu li:last-child { border-bottom: none; }
    .nav-menu > li > a { display: block; padding: 16px 4px; font-size: 17px; width: 100%; }
    .nav-menu > li > a::after { display: none; }
    .has-dropdown > a { display: flex; justify-content: space-between; }
    .has-dropdown > a::before {
        border-right: 2px solid #fff;
        border-bottom: 2px solid #fff;
    }

    .dropdown,
    .has-dropdown:hover > .dropdown,
    .has-dropdown.open > .dropdown {
        position: static;
        width: 100%;
        min-width: 0;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: grid;
        grid-template-rows: 0fr;
        grid-auto-rows: 0fr;
        transition: grid-template-rows var(--transition-medium) var(--ease-out), grid-auto-rows var(--transition-medium) var(--ease-out);
    }
    .dropdown > * { overflow: hidden; }
    .has-dropdown.open > .dropdown { grid-template-rows: 1fr; grid-auto-rows: 1fr; }
    .dropdown li { min-height: 0; }
    .dropdown a { padding: 12px 16px 12px 24px; color: rgba(255, 255, 255, 0.75); }

    #pev-nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-medium) var(--ease);
        z-index: 950;
    }
    #pev-nav-backdrop.open { opacity: 1; visibility: visible; }
}

@media (min-width: 881px) {
    #pev-nav-backdrop { display: none; }
}

/* =========================================================
   BUTTON MICRO-INTERACTIONS (applies to every CTA class site-wide)
   ========================================================= */
.btn, .read-btn, .service-btn, .apply-btn, .contact-btn, .partnership-btn,
.careers-view-btn, .submit-btn, .directions-btn, .cta-button, a.shop-btn, button.shop-btn,
.checkout-btn, .add-to-cart-btn {
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast) var(--ease-out), box-shadow var(--transition-fast) var(--ease-out), background var(--transition-fast) var(--ease), color var(--transition-fast) var(--ease), border-color var(--transition-fast) var(--ease);
}
.btn:hover, .read-btn:hover, .service-btn:hover, .apply-btn:hover, .contact-btn:hover,
.partnership-btn:hover, .careers-view-btn:hover, .checkout-btn:hover, .add-to-cart-btn:hover {
    transform: translateY(-3px);
}
.btn:active, .read-btn:active, .service-btn:active, .apply-btn:active, .contact-btn:active,
.partnership-btn:active, .careers-view-btn:active, .submit-btn:active {
    transform: translateY(-1px) scale(0.99);
}

.pev-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.45);
    transform: scale(0);
    animation: pev-ripple 620ms var(--ease-out);
    pointer-events: none;
}
@keyframes pev-ripple {
    to { transform: scale(2.6); opacity: 0; }
}

/* =========================================================
   BACK TO TOP
   ========================================================= */
#pev-back-to-top {
    position: fixed;
    right: 22px;
    bottom: 86px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card);
    border: 1px solid var(--stroke);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--transition-medium) var(--ease), transform var(--transition-medium) var(--ease-out), background var(--transition-fast) var(--ease), box-shadow var(--transition-fast) var(--ease);
    box-shadow: var(--shadow-md);
}
#pev-back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
#pev-back-to-top:hover { background: var(--accent); color: #04121e; box-shadow: var(--shadow-glow); }

@media (max-width: 600px) {
    #pev-back-to-top { right: 16px; bottom: 78px; width: 44px; height: 44px; }
}

/* =========================================================
   SHARED SECTION / EYEBROW HELPERS
   ========================================================= */
.pev-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
}
.pev-eyebrow::before {
    content: "";
    width: 26px;
    height: 2px;
    background: var(--accent);
    display: inline-block;
}

/* Slow Ken Burns zoom, shared by every page's hero/header video */
@keyframes pev-hero-zoom {
    from { transform: scale(1); }
    to { transform: scale(1.08); }
}

/* Solution-page closing CTA (energysoln/ev-conversions/evcharging/solargrid/techcap) */
.solution-cta {
    max-width: 800px;
    margin: 0 auto;
    padding: 6rem 1.5rem 7rem;
    text-align: center;
}
.solution-cta h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    color: var(--text);
    margin-bottom: 1rem;
}
.solution-cta p {
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

/* Gradient divider reused across pages */
.pev-divider {
    height: 1px;
    width: 100%;
    background: linear-gradient(90deg, transparent, var(--stroke) 20%, var(--stroke) 80%, transparent);
    border: none;
    margin: 0;
}

/* =========================================================
   GLASSMORPHISM / SCROLL-TRANSPARENCY UTILITIES
   Reusable frosted-glass panels for stat blocks, partner
   strips, testimonial and product cards site-wide.
   ========================================================= */
.pev-glass {
    background: rgba(19, 26, 34, 0.55);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-medium) var(--ease-out), border-color var(--transition-medium) var(--ease), box-shadow var(--transition-medium) var(--ease);
}
.pev-glass:hover {
    border-color: rgba(23, 162, 255, 0.35);
    box-shadow: var(--shadow-lg);
}

/* A section background that stays fixed while content scrolls over it,
   with a translucent gradient wash for depth (used on stat/partner bands) */
.pev-parallax-band {
    position: relative;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
}
.pev-parallax-band::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8, 13, 18, 0.82) 0%, rgba(10, 15, 20, 0.58) 50%, rgba(8, 13, 18, 0.82) 100%);
}
.pev-parallax-band > * { position: relative; z-index: 1; }
@media (max-width: 768px) {
    /* background-attachment:fixed is unreliable/janky on mobile browsers */
    .pev-parallax-band { background-attachment: scroll; }
}

/* =========================================================
   STAT COUNTER STRIP
   ========================================================= */
.pev-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 5rem 1.5rem;
}
.pev-stat-item {
    text-align: center;
    padding: 2rem 1rem;
}
.pev-stat-number {
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 0.6rem;
}
.pev-stat-label {
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}
@media (max-width: 880px) {
    .pev-stats { grid-template-columns: repeat(2, 1fr); gap: 1rem; padding: 3.5rem 1.25rem; }
}

/* =========================================================
   PARTNER / AFFILIATION STRIP
   ========================================================= */
.pev-partners {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 5rem 1.5rem;
}
.pev-partners-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 3rem;
}
.pev-partners-header h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 800;
    color: var(--text);
    margin-bottom: 0.75rem;
}
.pev-partners-header p {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.6;
}
.pev-partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}
.pev-partner-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
}
.pev-partner-card i {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--accent-muted);
    color: var(--accent);
    font-size: 1.25rem;
}
.pev-partner-card h4 {
    color: var(--text);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}
.pev-partner-card p {
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.4;
}