/* ===== CSS Variables ===== */
:root {
    --primary: #0066FF;
    --primary-dark: #0050CC;
    --primary-light: #E8F0FE;
    --accent: #00C9A7;
    --dark: #0A1628;
    --dark-2: #1A2740;
    --gray-900: #1F2937;
    --gray-700: #374151;
    --gray-500: #6B7280;
    --gray-300: #D1D5DB;
    --gray-100: #F3F4F6;
    --white: #FFFFFF;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-700);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--white);
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Allow text selection only in form inputs and chatbot */
input, textarea, select,
.chatbot-footer input {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    -webkit-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

a img, .etr-device-card img {
    pointer-events: auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    scroll-margin-top: 80px;
}

.accent {
    color: var(--primary);
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-500);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.btn-white:hover {
    background: transparent;
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline-white:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-nav {
    padding: 10px 24px;
    background: var(--primary);
    color: var(--white) !important;
    border-radius: 50px;
}

.btn-nav:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 10px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.logo-text {
    color: var(--white);
}

.navbar.scrolled .logo-text {
    color: var(--dark);
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    position: relative;
}

.nav-links a:not(.btn):hover {
    color: var(--white);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.navbar.scrolled .nav-links a:not(.btn) {
    color: var(--gray-700);
}

.navbar.scrolled .nav-links a:not(.btn):hover {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--dark);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, #0D2847 100%);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 201, 167, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding-top: 100px;
    padding-bottom: 80px;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 201, 167, 0.15);
    color: var(--accent);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(0, 201, 167, 0.3);
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-text h1 .accent {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
    color: var(--white);
    font-weight: 700;
    font-size: 0.85rem;
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: rgba(255,255,255,0.5);
    font-weight: 400;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 520px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    z-index: 1;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: var(--radius-lg);
    width: 100%;
}

.about-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary);
    color: var(--white);
    padding: 16px 24px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 20px;
    line-height: 1.2;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--gray-500);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 24px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--gray-900);
}

.about-feature i {
    color: var(--accent);
    font-size: 1.1rem;
}

/* ===== Services Grid ===== */
.services-section {
    background: var(--gray-100);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.service-icon.networking { background: #EEF2FF; color: #4F46E5; }
.service-icon.etims { background: #FEF3C7; color: #D97706; }
.service-icon.computers { background: #E0F2FE; color: #0284C7; }
.service-icon.phones { background: #F0FDF4; color: #16A34A; }
.service-icon.cctv { background: #FEE2E2; color: #DC2626; }
.service-icon.consultancy { background: #F3E8FF; color: #9333EA; }

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 20px;
}

.service-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.service-link:hover {
    gap: 12px;
}

/* ===== Product Detail Blocks ===== */
.product-block {
    padding: 80px 0;
    scroll-margin-top: 80px;
}

.product-block.alt {
    background: var(--gray-100);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.product-grid.reverse {
    direction: rtl;
}

.product-grid.reverse > * {
    direction: ltr;
}

.product-image img {
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius-lg);
}

.product-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
    line-height: 1.2;
}

.product-text > p {
    color: var(--gray-500);
    margin-bottom: 28px;
    font-size: 1.05rem;
}

.product-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 28px;
}

.pf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-900);
}

.pf-item i {
    color: var(--accent);
    font-size: 0.85rem;
}

.product-brands span {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-weight: 500;
}

.brand-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.brand-tag {
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Brand Logos */
.brand-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 12px;
    align-items: center;
}

.brand-logo-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    background: var(--white);
    padding: 14px 18px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-300);
    transition: var(--transition);
    min-width: 80px;
}

.brand-logo-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.brand-logo-item img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.brand-logo-item span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    white-space: nowrap;
}

.brand-logo-item.text-only {
    padding: 10px 18px;
    flex-direction: row;
}

.brand-logo-item.text-only span {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--gray-900);
}

.product-block.alt .brand-logo-item {
    background: var(--white);
}

/* ===== ETR Device Gallery ===== */
.etr-gallery {
    margin-top: 60px;
}

.gallery-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    text-align: center;
    margin-bottom: 36px;
}

.etr-devices-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.etr-device-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-300);
}

.etr-device-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.etr-device-image {
    background: var(--gray-100);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    overflow: hidden;
}

.etr-device-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: var(--transition);
}

.etr-device-card:hover .etr-device-image img {
    transform: scale(1.05);
}

.etr-device-info {
    padding: 20px;
}

.etr-device-info h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.etr-type {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 50px;
    margin-bottom: 8px;
}

.etr-device-info p {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* ===== Why Us ===== */
.why-us {
    background: var(--gray-100);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.why-card {
    background: var(--white);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.why-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin: 0 auto 20px;
}

.why-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.why-card p {
    font-size: 0.88rem;
    color: var(--gray-500);
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    position: relative;
}

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: stretch;
}

.contact-item {
    display: flex;
    align-items: start;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 0.9rem;
    color: var(--gray-500);
}

.contact-socials {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.contact-socials a {
    width: 42px;
    height: 42px;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-socials a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.contact-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-300);
    min-height: 350px;
}

.contact-map iframe {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 350px;
}


/* ===== Footer ===== */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    color: rgba(255,255,255,0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about .logo {
    margin-bottom: 16px;
}

.footer-about p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.footer-links li i {
    margin-right: 8px;
    color: var(--primary);
    width: 16px;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ===== Chatbot Widget ===== */
.chatbot {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1100;
    font-family: 'Inter', sans-serif;
}

.chatbot-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border: none;
    cursor: pointer;
    box-shadow: 0 6px 24px rgba(0, 102, 255, 0.4);
    transition: var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.chatbot-toggle:hover {
    transform: scale(1.08);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.5);
}

.chatbot-toggle-close {
    display: none;
}

.chatbot.active .chatbot-toggle-open { display: none; }
.chatbot.active .chatbot-toggle-close { display: inline; }

.chatbot-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 22px;
    height: 22px;
    background: #DC2626;
    color: var(--white);
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--white);
    transition: var(--transition);
}

.chatbot.active .chatbot-badge {
    display: none;
}

.chatbot-window {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 380px;
    max-height: 520px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: bottom right;
}

.chatbot.active .chatbot-window {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.chatbot-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chatbot-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chatbot-avatar-sm {
    width: 38px;
    height: 38px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.chatbot-header h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1px;
}

.chatbot-status {
    font-size: 0.72rem;
    opacity: 0.8;
    display: flex;
    align-items: center;
    gap: 5px;
}

.status-dot {
    width: 7px;
    height: 7px;
    background: var(--accent);
    border-radius: 50%;
    display: inline-block;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.chatbot-close {
    background: rgba(255,255,255,0.15);
    border: none;
    color: var(--white);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.chatbot-close:hover {
    background: rgba(255,255,255,0.3);
}

.chatbot-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 340px;
    min-height: 280px;
    scroll-behavior: smooth;
}

.chat-message {
    display: flex;
    gap: 8px;
    max-width: 85%;
    animation: chatFadeIn 0.3s ease;
}

@keyframes chatFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-message.bot {
    align-self: flex-start;
}

.chat-message.user {
    align-self: flex-end;
}

.chat-bubble {
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.88rem;
    line-height: 1.5;
}

.chat-message.bot .chat-bubble {
    background: var(--gray-100);
    color: var(--gray-900);
    border-bottom-left-radius: 4px;
}

.chat-message.user .chat-bubble {
    background: var(--primary);
    color: var(--white);
    border-bottom-right-radius: 4px;
}

.chat-quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.quick-reply {
    padding: 7px 14px;
    border-radius: 50px;
    border: 1.5px solid var(--primary);
    background: var(--white);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.quick-reply:hover {
    background: var(--primary);
    color: var(--white);
}

.chatbot-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    border-top: 1px solid var(--gray-300);
    background: var(--white);
}

.chatbot-footer input {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: 50px;
    font-size: 0.88rem;
    font-family: inherit;
    color: var(--gray-900);
    outline: none;
    transition: var(--transition);
}

.chatbot-footer input:focus {
    border-color: var(--primary);
}

.chatbot-footer button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.chatbot-footer button:hover {
    background: var(--primary-dark);
}

.chat-typing {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--gray-100);
    border-radius: 16px;
    border-bottom-left-radius: 4px;
    width: fit-content;
}

.chat-typing span {
    width: 7px;
    height: 7px;
    background: var(--gray-500);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */

/* Large tablets / small desktops */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 { font-size: 2.8rem; }
    .hero-text p { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-image { display: none; }

    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-image { max-width: 500px; margin: 0 auto; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: 1fr; gap: 40px; }
    .product-grid.reverse { direction: ltr; }
    .product-image { text-align: center; }
    .product-image img { margin: 0 auto; max-width: 400px; }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr 1fr; }
    .etr-devices-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Tablets */
@media (max-width: 768px) {
    .container { padding: 0 20px; }

    .nav-toggle { display: flex; }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        padding: 40px;
        gap: 24px;
        transition: var(--transition);
        box-shadow: var(--shadow-xl);
        z-index: 1001;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: 1000;
    }

    .nav-overlay.active {
        display: block;
    }

    .nav-links a {
        color: var(--gray-700) !important;
        font-size: 1.1rem;
    }

    .nav-links a:not(.btn)::after {
        display: none;
    }

    .section { padding: 60px 0; }
    .section-header { margin-bottom: 40px; }
    .section-header h2 { font-size: 1.8rem; }

    .hero { min-height: auto; padding-top: 80px; }
    .hero-content { padding-top: 60px; padding-bottom: 60px; }
    .hero-text h1 { font-size: 2.2rem; }
    .hero-stats { flex-direction: row; gap: 24px; flex-wrap: wrap; }

    .services-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .service-card { padding: 28px 22px; }

    .product-block { padding: 60px 0; }
    .product-features { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .etr-devices-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

    .contact-grid { grid-template-columns: 1fr; gap: 30px; }
    .contact-map { min-height: 300px; }
    .contact-map iframe { min-height: 300px; }

    .cta-section { padding: 60px 0; }
    .cta-content h2 { font-size: 1.6rem; }
    .cta-buttons { flex-direction: column; align-items: center; }

    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }

    .brand-logos { gap: 10px; }
    .brand-logo-item { padding: 10px 14px; min-width: 70px; }
    .brand-logo-item img { width: 26px; height: 26px; }
}

/* Small phones */
@media (max-width: 480px) {
    .container { padding: 0 16px; }

    .section { padding: 48px 0; }
    .section-header h2 { font-size: 1.5rem; }
    .section-tag { font-size: 0.7rem; padding: 5px 12px; }

    .navbar { padding: 12px 0; }
    .logo { font-size: 1.25rem; }
    .logo-icon { width: 34px; height: 34px; font-size: 0.9rem; }

    .hero-content { padding-top: 40px; padding-bottom: 40px; }
    .hero-text h1 { font-size: 1.75rem; }
    .hero-text p { font-size: 0.95rem; }
    .hero-badge { font-size: 0.75rem; padding: 6px 14px; }
    .hero-buttons { flex-direction: column; align-items: center; width: 100%; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .stat-number { font-size: 1.8rem; }

    .services-grid { grid-template-columns: 1fr; }
    .service-card { padding: 24px 20px; }

    .about-text h2 { font-size: 1.5rem; }
    .about-badge { position: relative; bottom: auto; right: auto; margin-top: 16px; display: inline-flex; }

    .product-block { padding: 48px 0; }
    .product-grid { gap: 30px; }
    .product-text h2 { font-size: 1.5rem; }
    .product-text > p { font-size: 0.95rem; }
    .pf-item { font-size: 0.82rem; }
    .product-image img { max-width: 100%; }

    .why-grid { grid-template-columns: 1fr; }
    .why-card { padding: 28px 22px; }
    .etr-devices-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .etr-device-image { height: 150px; padding: 16px; }
    .etr-device-info { padding: 14px; }
    .etr-device-info h4 { font-size: 0.95rem; }
    .etr-device-info p { font-size: 0.78rem; }
    .gallery-title { font-size: 1.2rem; margin-bottom: 24px; }
    .etr-gallery { margin-top: 40px; }

    .cta-section { padding: 48px 0; }
    .cta-content h2 { font-size: 1.35rem; }
    .cta-content p { font-size: 0.95rem; }
    .cta-buttons .btn { width: 100%; justify-content: center; }

    .contact-item { gap: 12px; }
    .contact-icon { width: 40px; height: 40px; font-size: 0.9rem; }

    .footer { padding: 40px 0 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { font-size: 0.75rem; }

    .brand-logos { gap: 8px; }
    .brand-logo-item { padding: 8px 12px; min-width: auto; flex: 0 0 auto; }
    .brand-logo-item img { width: 22px; height: 22px; }
    .brand-logo-item span { font-size: 0.68rem; }
    .brand-logo-item.text-only span { font-size: 0.75rem; }

    .back-to-top { bottom: 90px; right: 20px; width: 40px; height: 40px; font-size: 0.85rem; }

    .contact-map iframe { min-height: 180px; }

    /* Chatbot mobile */
    .chatbot { bottom: 16px; right: 16px; }
    .chatbot-toggle { width: 54px; height: 54px; font-size: 1.2rem; }
    .chatbot-window {
        width: calc(100vw - 32px);
        max-height: 70vh;
        bottom: 70px;
        right: 0;
    }
    .chatbot-body { max-height: 50vh; min-height: 200px; padding: 16px; }
    .chatbot-header { padding: 14px 16px; }
    .chatbot-footer { padding: 10px 12px; }
    .chatbot-footer input { padding: 9px 12px; font-size: 0.85rem; }
    .chatbot-badge { width: 20px; height: 20px; font-size: 0.65rem; }

    /* Fix hero stats on mobile */
    .hero-stats { flex-direction: row; justify-content: center; flex-wrap: wrap; gap: 20px; }
    .stat { min-width: 80px; }
}

/* Extra small (very narrow screens) */
@media (max-width: 360px) {
    .hero-text h1 { font-size: 1.5rem; }
    .section-header h2 { font-size: 1.3rem; }
    .btn { padding: 12px 24px; font-size: 0.85rem; }
    .nav-links { width: 100%; padding: 30px; }
    .chatbot-window { max-height: 65vh; }
    .etr-devices-grid { grid-template-columns: 1fr; }
    .etr-device-image { height: 180px; }
}