/* ==========================================================================
   PC KUMAR — WHITE THEME WITH STEALTH BLACK HERO SECTION & LOGO RED ACCENTS
   - Header & Page: Clean White Theme (#ffffff / #f8fafc)
   - Hero Section ONLY: Deep Stealth Black Theme (#050505) with Crimson Red (#dc2626)
   - Font Family: Poppins (Sans-Serif) across all elements
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. COLOR PALETTE & DESIGN SYSTEM
   -------------------------------------------------------------------------- */
:root {
    --bg-page: #f8fafc;
    --bg-surface: #ffffff;
    --bg-hero-black: #050505;

    /* Logo Crimson Red Accent: #dc2626 */
    --theme-red: #dc2626;
    --theme-red-dark: #b91c1c;
    --theme-red-bright: #ef4444;
    --theme-red-glow: rgba(220, 38, 38, 0.4);
    
    --gradient-red: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    --gradient-red-hover: linear-gradient(135deg, #b91c1c 0%, #991b1b 100%);

    /* Secondary Accents */
    --nvsx-green: #059669;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-white: #ffffff;

    /* Borders */
    --border-light: #e2e8f0;
    --border-dark: #cbd5e1;
    --border-red: #dc2626;

    /* Fonts — Poppins Sans-Serif */
    --font-impact: 'Poppins', -apple-system, sans-serif;
    --font-heading: 'Poppins', -apple-system, sans-serif;
    --font-body: 'Poppins', -apple-system, sans-serif;
    --font-mono: 'Poppins', -apple-system, sans-serif;

    /* Transitions */
    --transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    position: relative;
}

a { color: inherit; text-decoration: none; }
button { font-family: var(--font-body); border: none; background: none; cursor: pointer; outline: none; }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: rgba(220, 38, 38, 0.4); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--theme-red-dark); }

/* --------------------------------------------------------------------------
   2. NAVBAR HEADER & CENTERED SUB-NAVBAR (WHITE THEME)
   -------------------------------------------------------------------------- */
.navbar {
    position: relative;
    z-index: 100;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.top-nav-row {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-light);
}

.nav-container {
    max-width: 1760px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand Logo Image Styling */
.brand-logo {
    display: flex;
    align-items: center;
}

.brand-logo-img {
    height: 46px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}


/* Nav Action Buttons */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 18px;
}

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 6px;
    background: #f1f5f9;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.icon-btn:hover {
    color: var(--theme-red);
    border-color: var(--theme-red-bright);
    background: rgba(220, 38, 38, 0.08);
}

.cart-btn { position: relative; }

.cart-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--theme-red);
    color: #fff;
    font-family: var(--font-body);
    font-weight: 800;
    font-size: 0.65rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 8px rgba(220, 38, 38, 0.4);
}

.btn-yellow-quote {
    padding: 10px 24px;
    border-radius: 6px;
    background: var(--gradient-red);
    color: #ffffff;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
    transition: var(--transition);
}

.btn-yellow-quote:hover {
    background: var(--gradient-red-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.45);
}

.mobile-menu-toggle { display: none; color: var(--text-primary); font-size: 1.2rem; }

/* CENTERED SUB NAV BAR LINKS (WHITE THEME) */
.sub-nav-row {
    padding: 14px 0;
    background: var(--bg-surface);
}

.sub-nav-menu.centered-menu {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    width: 100%;
    overflow-x: auto;
}

.sub-nav-link {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-secondary);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.sub-nav-link:hover { color: var(--theme-red); }

.sub-nav-link.highlight-green {
    color: var(--nvsx-green);
    font-weight: 700;
}

.sub-nav-link.italic-labs span {
    font-style: italic;
    color: var(--theme-red);
}

.nav-arrow { font-size: 0.65rem; opacity: 0.7; }

/* --------------------------------------------------------------------------
   3. HERO SECTION ONLY: STEALTH DEEP BLACK (#050505) WITH CRIMSON RED ACCENTS
   -------------------------------------------------------------------------- */
.nvsx-hero-section {
    position: relative;
    min-height: calc(100vh - 130px);
    padding: 50px 0 60px 0;
    display: flex;
    align-items: center;
    background: var(--bg-hero-black);
    color: var(--text-white);
    overflow: hidden;
    z-index: 10;
}

/* Crimson Red Ambient Spotlight behind PC */
/*.hero-spotlight {*/
/*    position: absolute;*/
/*    top: 50%;*/
/*    right: 12%;*/
/*    transform: translateY(-50%);*/
/*    width: 850px;*/
/*    height: 850px;*/
/*    background: radial-gradient(circle, rgba(220, 38, 38, 0.45) 0%, rgba(185, 28, 28, 0.2) 45%, transparent 75%);*/
/*    filter: blur(110px);*/
/*    pointer-events: none;*/
/*    z-index: 1;*/
/*}*/

/*.hero-container {*/
/*    max-width: 1760px;*/
/*    margin: 0 auto;*/
/*    padding: 0 40px;*/
/*    width: 100%;*/
/*    position: relative;*/
/*    z-index: 5;*/
/*}*/

.hero-container{
    max-width: 1600px;
    width: 100%;
    padding: 0 4vw;
    margin-right: auto;
    margin-left: auto;
}

/*.hero-grid {*/
/*    display: grid;*/
/*    grid-template-columns: 1.05fr 1.15fr;*/
/*    gap: 40px;*/
/*    align-items: center;*/
/*}*/

.hero-grid{
    display : flex;
    justify-content : center;
    align-items : center;
    gap : 40px
}


/* --------------------------------------------------------------------------
   4. LEFT COLUMN CONTENT (STEALTH BLACK HERO)
   -------------------------------------------------------------------------- */
.hero-left-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    width : 45%;
}

.pre-heading-line {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--theme-red-bright);
    display: flex;
    align-items: center;
    gap: 8px;
}

.yellow-dash {
    color: var(--theme-red);
    font-weight: 900;
}

/* Main Headline (Pure White & Crimson Red Accent) */
.hero-main-title {
    font-family: var(--font-body);
    font-size: 70px;
    font-weight: 800;
    line-height: 0.94;
    letter-spacing: -1.5px;
    text-transform: uppercase;
    color: #ffffff;
}

.text-yellow {
    color: var(--theme-red-bright);
    text-shadow: 0 0 35px rgba(239, 68, 68, 0.6);
}

.text-outline {
    color: #ffffff;
}

/* Subtitle Paragraph */
.hero-subtitle {
    font-family: var(--font-body);
    font-size: 1.08rem;
    color: #a1a1a1;
    line-height: 1.65;
    max-width: 620px;
    font-weight: 400;
}

.hero-subtitle strong {
    color: #ffffff;
    font-weight: 700;
}

/* CTAs Row */
.hero-btn-group {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 8px;
}

.btn-yellow-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    border-radius: 6px;
    background: var(--gradient-red);
    color: #ffffff;
    font-family: var(--font-body);
    font-weight: 800;
    font-size: 0.95rem;
    letter-spacing: 1px;
    box-shadow: 0 0 35px rgba(220, 38, 38, 0.6);
    transition: var(--transition);
}

.btn-yellow-cta:hover {
    background: var(--gradient-red-hover);
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(220, 38, 38, 0.8);
}

.btn-outline-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 17px 36px;
    border-radius: 6px;
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 1px;
    transition: var(--transition);
}

.btn-outline-cta:hover {
    border-color: var(--theme-red-bright);
    background: rgba(220, 38, 38, 0.2);
    transform: translateY(-3px);
}

/* Trust Badges Row (Hero Dark Cards) */
.trust-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 14px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    width: 100%;
}

.badge-item {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: #a1a1a1;
    padding: 8px 14px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.badge-item:hover {
    color: #ffffff;
    border-color: var(--theme-red);
}

.green-dot {
    color: #00ff66;
    font-size: 0.6rem;
    text-shadow: 0 0 8px #00ff66;
}

/* --------------------------------------------------------------------------
   5. RIGHT STAGE: PC VISUAL ON DARK HERO
   -------------------------------------------------------------------------- */
.hero-right-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 55%;
}

.hero-pc-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    mix-blend-mode: lighten;
    filter: drop-shadow(0 0 65px rgba(220, 38, 38, 0.55));
    mask-image: radial-gradient(ellipse at 50% 50%, black 85%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 85%, transparent 100%);
}

/* Interactive Hotspots */
.hotspot {
    position: absolute;
    z-index: 20;
    width: 26px;
    height: 26px;
    transform: translate(-50%, -50%);
    cursor: pointer;
}

.hotspot-pulse {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--theme-red-bright);
    border: 3px solid #ffffff;
    box-shadow: 0 0 20px var(--theme-red-bright);
    animation: pulseHotspot 2s infinite;
}

@keyframes pulseHotspot {
    0% { transform: scale(0.9); opacity: 0.8; }
    50% { transform: scale(1.25); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.8; }
}

.hotspot-tooltip {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(15px);
    border: 1px solid var(--theme-red);
    padding: 8px 14px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    pointer-events: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    display: flex;
    flex-direction: column;
}

.hotspot-tooltip strong {
    font-size: 0.8rem;
    color: #fff;
}

.hotspot-tooltip span {
    font-size: 0.7rem;
    color: var(--theme-red-bright);
}

.hotspot:hover .hotspot-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Hotspots coordinates */
.hs-cooling { top: 24%; left: 47%; }
.hs-purple-gpu { top: 57%; left: 45%; }

/* --------------------------------------------------------------------------
   6. FLOATING AI VOLT WIDGET
   -------------------------------------------------------------------------- */
.ai-widget-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 90;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ai-widget-btn {
    padding: 10px 18px;
    border-radius: 6px;
    background: #ffffff;
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.5px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.ai-widget-btn i {
    color: var(--theme-red);
}

.ai-widget-btn:hover {
    border-color: var(--theme-red);
    color: var(--theme-red);
    box-shadow: 0 12px 35px rgba(220, 38, 38, 0.2);
    transform: translateY(-2px);
}

.ai-lightning-btn {
    width: 44px;
    height: 44px;
    border-radius: 6px;
    background: var(--gradient-red);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 900;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.35);
    cursor: pointer;
    transition: var(--transition);
}

.ai-lightning-btn:hover {
    transform: scale(1.1) rotate(10deg);
}

/* --------------------------------------------------------------------------
   7. QUOTE MODAL (WHITE THEME CARD)
   -------------------------------------------------------------------------- */
.quote-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.quote-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(10px);
}

.quote-card {
    position: relative;
    width: 90%;
    max-width: 620px;
    background: #ffffff;
    border: 1px solid var(--border-light);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15), 0 0 30px rgba(220, 38, 38, 0.1);
    border-radius: 12px;
    padding: 36px;
    z-index: 10;
    transform: translateY(-20px) scale(0.95);
    transition: var(--transition);
}

.quote-modal.active .quote-card {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.modal-close:hover { color: var(--text-primary); }

.modal-header h2 {
    font-family: var(--font-body);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-top: 4px;
}

.yellow-tag {
    font-family: var(--font-body);
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--theme-red);
    letter-spacing: 2px;
}

.modal-header p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-top: 6px;
    margin-bottom: 24px;
}

#quoteForm {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 6px;
    border: 1px solid var(--border-light);
    background: #f8fafc;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--theme-red);
    background: #ffffff;
    box-shadow: 0 0 15px rgba(220, 38, 38, 0.15);
}

.form-textarea { resize: vertical; }

.full-width {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
}

/* --------------------------------------------------------------------------
   8. TOAST NOTIFICATIONS
   -------------------------------------------------------------------------- */
.toast-container {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: #ffffff;
    border: 1px solid var(--theme-red);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 0.88rem;
    font-family: var(--font-body);
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: toastIn 0.3s ease-out forwards;
}

@keyframes toastIn {
    0% { opacity: 0; transform: translateX(-40px); }
    100% { opacity: 1; transform: translateX(0); }
}

/* --------------------------------------------------------------------------
   9. RESPONSIVE MEDIA QUERIES
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-left-content {
        align-items: center;
    }

    .trust-badges-row {
        justify-content: center;
    }

    .sub-nav-menu.centered-menu {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .nav-container { padding: 0 20px; }
    .hero-container { padding: 0 20px; }
    .sub-nav-menu { display: none; }
    .mobile-menu-toggle { display: block; }
    .hero-main-title { font-size: 2.8rem; }
    .hero-btn-group { flex-direction: column; width: 100%; }
    .btn-yellow-cta, .btn-outline-cta { width: 100%; justify-content: center; }
    .form-row { grid-template-columns: 1fr; }
}