/*
Theme Name: PixelExpert Theme
Theme URI: https://pixelexpert.in
Author: Antigravity
Description: Premium Custom HMI and Test Automation theme for PixelExpert.
Version: 1.3.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: pixelexpert
*/

/* ==========================================================================
   PixelExpert.in - Premium Automotive HMI & Test Automation Stylesheet
   ========================================================================== */

/* 1. Global Reset & Variables */
:root {
    --bg-primary: #060913;
    --bg-secondary: #0c1122;
    --bg-card: rgba(13, 19, 39, 0.7);
    --bg-card-hover: rgba(20, 29, 58, 0.85);
    
    --color-cyan: #00f2fe;
    --color-blue: #4facfe;
    --color-purple: #8a2be2;
    --color-pink: #f72585;
    
    --grad-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
    --grad-secondary: linear-gradient(135deg, #7f00ff 0%, #e100ff 100%);
    --grad-dark: linear-gradient(180deg, #060913 0%, #0c1122 100%);
    --grad-cyan-glow: rgba(0, 242, 254, 0.15);
    
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(0, 242, 254, 0.3);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    
    --max-width: 1360px;
    --border-radius: 16px;
    --border-radius-sm: 8px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* 2. Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #1a2238;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-cyan);
}

/* 3. Helper Layouts & Typography */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 12px;
}

.text-gradient-cyan {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
    background: var(--grad-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-padding {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-header h2 {
    font-size: 1.5rem; /* Reduced to be smaller than the hero maximum of 1.9rem */
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.15rem;
}

/* 4. Glassmorphism Components */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: transform var(--transition-medium), border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-color-hover);
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.05);
}

/* 5. Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-medium);
    gap: 8px;
}

.btn-primary {
    background: var(--grad-primary);
    color: #000000;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color-hover);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(0, 242, 254, 0.08);
    transform: translateY(-2px);
    border-color: var(--color-cyan);
}

/* 6. Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 9, 19, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.header.scrolled {
    padding: 10px 0;
    background: rgba(6, 9, 19, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 62px;
    width: auto;
    filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.3));
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo-text span {
    font-weight: 300;
}

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 700; /* Bold */
    color: var(--text-secondary);
    font-size: 1.3rem; /* 25% more size */
    position: relative;
    padding: 8px 0;
    transition: color var(--transition-fast);
    cursor: pointer;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--grad-primary);
    transition: width var(--transition-medium);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1010;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* 7. Page Transition Animation */
main {
    animation: fadeInPage 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInPage {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 8. Hero Section with Full-Bleed Background Overlay */
.hero-sec {
    position: relative;
    min-height: 75vh;
    padding: 220px 0 100px 0; /* Pushed content a little lower */
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.55; /* More visible */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(6, 9, 19, 0.2) 0%, rgba(6, 9, 19, 0.85) 100%); /* Lighter mask */
    z-index: 2;
}

.hero-container-overlay {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 12px;
}

.hero-content {
    max-width: 580px; /* Constrained width so we do not hide the cockpit cluster on the background */
    text-align: left;
    background: rgba(12, 17, 34, 0.45); /* Transparent glass box */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08); /* Fine border similar to buttons */
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.hero-content h1 {
    font-size: 1.9rem; /* Reduced by 50% from original 3.8rem */
    margin-bottom: 24px;
    line-height: 1.25;
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* 9. Quick Capability Bar */
.capability-bar {
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: rgba(12, 17, 34, 0.4);
    padding: 40px 0;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.cap-bar-item h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.cap-bar-item h4::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--color-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-cyan);
}

.cap-bar-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* 10. Who We Are */
.who-we-are-sec {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.who-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.who-content h2 {
    font-size: 1.5rem; /* Reduced to match text hierarchy */
    margin-bottom: 24px;
}

.who-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.highlight-box {
    background: linear-gradient(90deg, rgba(0, 242, 254, 0.05) 0%, transparent 100%);
    border-left: 3px solid var(--color-cyan);
    padding: 16px 24px;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.highlight-box h4 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.highlight-box p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-secondary);
}

/* Pipeline Flow Design */
.pipeline-container {
    padding: 24px;
}

.pipeline-title {
    font-size: 1.2rem;
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pipeline-title::after {
    content: '';
    flex-grow: 1;
    height: 1px;
    background: var(--border-color);
}

.pipeline-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: relative;
}

.pipeline-steps::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background: linear-gradient(180deg, var(--color-cyan) 0%, var(--color-purple) 100%);
}

.pipeline-step {
    display: flex;
    align-items: center;
    gap: 24px;
    position: relative;
    padding-left: 8px;
}

.step-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--color-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-cyan);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
    z-index: 2;
    transition: all var(--transition-fast);
}

.pipeline-step:nth-child(even) .step-num {
    border-color: var(--color-purple);
    color: var(--color-purple);
    box-shadow: 0 0 10px rgba(138, 43, 226, 0.2);
}

.step-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.15rem;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    flex-grow: 1;
    transition: all var(--transition-medium);
}

.pipeline-step:hover .step-name {
    background: rgba(0, 242, 254, 0.04);
    border-color: var(--border-color-hover);
    transform: translateX(8px);
}

.pipeline-step:nth-child(even):hover .step-name {
    background: rgba(138, 43, 226, 0.04);
    border-color: rgba(138, 43, 226, 0.3);
}

/* 11. Why PixelExpert? */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.why-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.why-icon {
    font-size: 2rem;
    line-height: 1;
    color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.05);
    padding: 16px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(0, 242, 254, 0.1);
}

.why-card:nth-child(even) .why-icon {
    color: var(--color-purple);
    background: rgba(138, 43, 226, 0.05);
    border-color: rgba(138, 43, 226, 0.1);
}

.why-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.why-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 12. Tech Overview */
.tech-overview-sec {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.tech-card {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--grad-primary);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.tech-card:hover::before {
    opacity: 1;
}

.tech-icon {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-cyan);
    margin-bottom: 16px;
}

.tech-card h3 {
    font-size: 1.35rem;
    margin-bottom: 8px;
}

.tech-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 13. Application Areas */
.app-areas-sec {
    position: relative;
}

.app-areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.app-card {
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 320px;
}

.app-icon {
    font-size: 2.2rem;
    color: var(--color-cyan);
    margin-bottom: 24px;
}

.app-card:nth-child(even) .app-icon {
    color: var(--color-purple);
}

.app-card h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.app-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 14. Customer Logo Carousel (Infinite Loop Marquee) */
.marquee-sec {
    background: rgba(12, 17, 34, 0.8);
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.marquee-title {
    text-align: center;
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.marquee-container {
    overflow: hidden;
    user-select: none;
    display: flex;
    position: relative;
    width: 100%;
}

.marquee-container::before, .marquee-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 120px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.marquee-container::before {
    left: 0;
    background: linear-gradient(90deg, var(--bg-primary) 0%, transparent 100%);
}

.marquee-container::after {
    right: 0;
    background: linear-gradient(270deg, var(--bg-primary) 0%, transparent 100%);
}

.marquee-content {
    display: flex;
    gap: 80px;
    animation: scroll-marquee 25s linear infinite;
    align-items: center;
    padding: 10px 0;
    min-width: 100%;
}

.marquee-content:hover {
    animation-play-state: paused;
}

.client-logo-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 50px;
}

.client-logo {
    height: 48px;
    max-width: 150px;
    object-fit: contain;
    filter: grayscale(100%) contrast(150%) brightness(80%);
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.client-logo:hover {
    filter: none;
    opacity: 1;
    transform: scale(1.05);
}

@keyframes scroll-marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-50% - 40px)); }
}

/* 15. CTA Section (Bottom of sections) */
.cta-sec {
    background: radial-gradient(circle at 10% 10%, rgba(138, 43, 226, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 90% 90%, rgba(0, 242, 254, 0.08) 0%, transparent 50%);
}

.cta-box {
    text-align: center;
    padding: 60px 40px;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(0, 242, 254, 0.03) 0%, transparent 70%);
}

.cta-box h2 {
    font-size: 1.5rem; /* Scaled down */
    margin-bottom: 16px;
}

.cta-box p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 16. Services Page Content */
.services-section {
    padding-top: 140px;
}

.services-list {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.service-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-item:nth-child(even) {
    direction: rtl;
}

.service-item:nth-child(even) .service-info {
    direction: ltr; /* Reset text direction for readability */
}

.service-img-wrapper {
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.service-img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-img-wrapper:hover .service-img {
    transform: scale(1.04);
}

.service-num {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 16px;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.7;
}

.service-info h3 {
    font-size: 1.4rem; /* Scaled down */
    margin-bottom: 16px;
}

.service-info p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 24px;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.service-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.service-feature::before {
    content: '✓';
    color: var(--color-cyan);
    font-weight: 700;
}

/* 17. Pixel Test Automation Page Content */
.pta-section {
    padding-top: 140px;
}

.pta-hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 60px;
}

.pta-hero-text {
    text-align: left;
}

.pta-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.25);
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--color-cyan);
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pta-hero-text h1 {
    font-size: 1.85rem;
    margin-bottom: 16px;
    line-height: 1.25;
}

.pta-hero-tagline {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-cyan);
    margin-bottom: 20px;
    line-height: 1.4;
}

.pta-hero-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.pta-hero-actions {
    display: flex;
    justify-content: flex-start;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 0;
}

.pta-hero-img-wrapper {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pta-hero-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    display: block;
}

/* Quick Stats Strip */
.pta-stats-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 24px 30px;
    border-radius: 16px;
    background: rgba(12, 17, 34, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    margin-bottom: 90px;
}

.pta-stat-item {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
}

.pta-stat-icon {
    font-size: 1.8rem;
    color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.08);
    padding: 12px;
    border-radius: 12px;
    border: 1px solid rgba(0, 242, 254, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pta-stat-item:nth-child(even) .pta-stat-icon {
    color: var(--color-purple);
    background: rgba(138, 43, 226, 0.08);
    border-color: rgba(138, 43, 226, 0.15);
}

.pta-stat-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.pta-stat-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* Advantages Grid */
.pta-advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
    margin-bottom: 100px;
}

.pta-adv-card {
    padding: 32px 28px;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.pta-adv-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 242, 254, 0.3);
}

.pta-adv-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.pta-adv-icon {
    font-size: 1.6rem;
    color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.08);
    padding: 10px;
    border-radius: 10px;
    flex-shrink: 0;
}

.pta-adv-card h3 {
    font-size: 1.18rem;
    margin-bottom: 0;
    color: var(--text-primary);
}

.pta-adv-card p {
    font-size: 0.94rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Three Pillars Section */
.pta-pillars-sec {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
    padding: 80px 0 100px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 100px;
}

.pta-pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.pta-pillar-card {
    display: flex;
    flex-direction: column;
    padding: 36px 30px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.pta-pillar-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-cyan), var(--color-purple));
}

.pta-pillar-card:nth-child(2)::before {
    background: linear-gradient(90deg, var(--color-purple), var(--color-pink));
}

.pta-pillar-card:nth-child(3)::before {
    background: linear-gradient(90deg, var(--color-cyan), var(--color-blue));
}

.pta-pillar-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-cyan);
    margin-bottom: 8px;
}

.pta-pillar-card h3 {
    font-size: 1.45rem;
    margin-bottom: 4px;
}

.pta-pillar-subtitle {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-purple);
    margin-bottom: 24px;
}

.pta-pillar-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex-grow: 1;
}

.pta-pillar-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

.pta-pillar-features li::before {
    content: '✦';
    color: var(--color-cyan);
    font-size: 0.85rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.pta-pillar-card:nth-child(2) .pta-pillar-features li::before {
    color: var(--color-purple);
}

.pta-pillar-card:nth-child(3) .pta-pillar-features li::before {
    color: var(--color-cyan);
}

/* Hardware Control Grid */
.pta-hardware-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    margin-bottom: 100px;
}

.pta-hw-card {
    padding: 32px 24px;
    border-radius: 14px;
}

.pta-hw-icon {
    font-size: 2rem;
    margin-bottom: 18px;
    color: var(--color-cyan);
}

.pta-hw-card:nth-child(even) .pta-hw-icon {
    color: var(--color-purple);
}

.pta-hw-card h3 {
    font-size: 1.18rem;
    margin-bottom: 10px;
}

.pta-hw-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* Architecture Diagram Showcase */
.pta-arch-showcase {
    margin: 50px 0 80px 0;
    text-align: center;
}

.pta-arch-card {
    padding: 24px;
    border-radius: 20px;
    background: rgba(12, 17, 34, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.pta-arch-img {
    width: 100%;
    max-height: 540px;
    object-fit: contain;
    border-radius: 12px;
    display: block;
    margin: 0 auto;
}

.pta-arch-caption {
    margin-top: 16px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Challenge / Problem-Solution Box */
.pta-challenge-box {
    padding: 40px;
    border-radius: 18px;
    margin-bottom: 90px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(138, 43, 226, 0.08) 100%);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.pta-challenge-box h3 {
    font-size: 1.35rem;
    margin-bottom: 16px;
    color: #ff6b6b;
}

.pta-challenge-list {
    margin: 20px 0 24px 20px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pta-challenge-list li {
    font-size: 0.96rem;
    line-height: 1.6;
}

.pta-challenge-conclusion {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-cyan);
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* 4-Domain Grid for Subpages (2x2 Layout) */
.pta-domains-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-bottom: 90px;
}

.pta-domain-card {
    padding: 36px 30px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
}

.pta-domain-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.pta-domain-icon {
    font-size: 1.8rem;
    color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.08);
    padding: 12px;
    border-radius: 12px;
    border: 1px solid rgba(0, 242, 254, 0.15);
    flex-shrink: 0;
}

.pta-domain-card:nth-child(2) .pta-domain-icon {
    color: var(--color-purple);
    background: rgba(138, 43, 226, 0.08);
    border-color: rgba(138, 43, 226, 0.15);
}

.pta-domain-card:nth-child(3) .pta-domain-icon {
    color: var(--color-pink);
    background: rgba(255, 0, 128, 0.08);
    border-color: rgba(255, 0, 128, 0.15);
}

.pta-domain-card:nth-child(4) .pta-domain-icon {
    color: var(--color-blue);
    background: rgba(0, 128, 255, 0.08);
    border-color: rgba(0, 128, 255, 0.15);
}

.pta-domain-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0;
}

.pta-domain-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.pta-domain-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

.pta-domain-features li::before {
    content: '✓';
    color: var(--color-cyan);
    font-weight: 700;
    margin-top: 1px;
    flex-shrink: 0;
}

code {
    font-family: monospace;
    background: rgba(0, 242, 254, 0.1);
    color: var(--color-cyan);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88em;
}

/* 18. About Us & Engineering Capability Content */
.about-section {
    padding-top: 140px;
}

.about-hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.about-hero-text h1 {
    font-size: 1.75rem; /* Reduced by 50% from original 3.5rem */
    margin-bottom: 24px;
}

.about-hero-text p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.philosophy-card {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.05) 0%, rgba(138, 43, 226, 0.05) 100%);
    border-left: 4px solid var(--color-cyan);
    padding: 30px;
}

.philosophy-card h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.philosophy-tagline {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    font-style: italic;
    color: var(--color-cyan);
}

.about-hero-image-wrapper {
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

/* Engineering Capabilities Tags Grid */
.capabilities-wrapper {
    margin-top: 80px;
    text-align: center;
    background: rgba(12, 17, 34, 0.5);
    padding: 60px 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.capabilities-wrapper h2 {
    font-size: 1.4rem; /* Scaled down */
    margin-bottom: 40px;
}

.tags-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.cap-tag {
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.cap-tag:hover {
    background: var(--grad-primary);
    color: #000000;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
}

/* 19. Contact Us Content */
.contact-section {
    padding-top: 140px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info-panel h1 {
    font-size: 1.75rem; /* Reduced by 50% from original 3.5rem */
}

.contact-info-panel p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Contact Details List */
.contact-details-block {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-detail-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.contact-detail-icon {
    font-size: 1.25rem;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.contact-detail-text h4 {
    margin: 0 0 0.25rem 0;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.contact-detail-text p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.contact-detail-text a {
    color: var(--color-cyan);
    text-decoration: none;
    transition: color var(--transition-fast), text-shadow var(--transition-fast);
}

.contact-detail-text a:hover {
    color: var(--color-purple);
    text-shadow: 0 0 8px rgba(138, 43, 226, 0.5);
}

.contact-form-panel {
    width: 100%;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:focus {
    border-color: var(--color-cyan);
    background: rgba(0, 242, 254, 0.02);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

textarea.form-input {
    min-height: 150px;
    resize: vertical;
}

.form-label {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

textarea ~ .form-label {
    top: 24px;
    transform: none;
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
    top: -10px;
    left: 12px;
    font-size: 0.78rem;
    background: var(--bg-primary);
    padding: 0 8px;
    color: var(--color-cyan);
    transform: none;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

select.form-input {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2300f2fe' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 18px center;
    background-size: 14px;
    padding-right: 42px;
    cursor: pointer;
}

select.form-input option {
    background: #0b1120;
    color: #ffffff;
    padding: 12px;
}

input[type="date"].form-input {
    color-scheme: dark;
}

select.form-input ~ .form-label,
input[type="date"].form-input ~ .form-label {
    top: -10px;
    left: 12px;
    font-size: 0.78rem;
    background: var(--bg-primary);
    padding: 0 8px;
    color: var(--color-cyan);
    transform: none;
}

.submit-btn {
    align-self: flex-start;
    padding: 16px 36px;
    border: none;
    outline: none;
    cursor: pointer;
}

.form-feedback {
    padding: 16px;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    display: none;
    margin-top: 16px;
}

.form-feedback.success {
    display: block;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.form-feedback.info {
    display: block;
    background: rgba(0, 242, 254, 0.15);
    border: 1px solid rgba(0, 242, 254, 0.3);
    color: var(--color-cyan);
}

.form-feedback.error {
    display: block;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

/* 20. Footer Styles */
.footer {
    background: #03050a;
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px 0;
    margin-top: 100px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo-img {
    height: 48px;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 320px;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 8px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--grad-primary);
}

.footer-link-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-cyan);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copy {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal-link {
    color: var(--text-muted);
    font-size: 0.88rem;
    transition: color var(--transition-fast);
}

.footer-legal-link:hover {
    color: var(--text-primary);
}

/* 21. Responsive Styles (Media Queries) */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 1.7rem;
    }
    
    .section-header h2 {
        font-size: 1.35rem;
    }
    
    .who-grid, .service-item, .contact-grid, .about-hero {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .service-item:nth-child(even) {
        direction: ltr;
    }

    .pta-domains-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 40px;
        transition: left var(--transition-medium);
        border-top: 1px solid var(--border-color);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .pta-hero-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
}