/* ===================================
   TRACKLYT - Premium Luxury Concierge
   Global Styles
   =================================== */

/* CSS Variables / Design Tokens */
:root {
    /* Colors */
    --color-bg-primary: #0e0e0e;
    --color-bg-secondary: #161616;
    --color-accent: #d3e17e;
    --color-accent-dark: #b8c56a;
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    --color-text-dark: #1a1a1a;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-card-bg: rgba(255, 255, 255, 0.05);
    --color-card-bg-hover: rgba(255, 255, 255, 0.08);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-hero: clamp(2.5rem, 5vw, 4rem);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 48px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 40px rgba(211, 225, 126, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===================================
   HEADER / NAVIGATION
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: transparent;
    transition: var(--transition-base);
}

.header.scrolled {
    background: rgba(14, 14, 14, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--spacing-sm) 0;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--color-text-primary);
    transition: var(--transition-base);
}

.logo:hover {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links>li {
    position: relative;
}

.nav-links>li>a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links>li>a:hover {
    color: var(--color-text-primary);
}

.dropdown-arrow {
    font-size: 8px;
    transition: var(--transition-base);
}

.nav-item.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 200px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) 0;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.nav-item.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown li a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.dropdown li a:hover {
    color: var(--color-accent);
    background: var(--color-card-bg);
}

.login-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: var(--transition-base);
}

.login-btn:hover {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-text-primary);
}

.user-icon {
    width: 18px;
    height: 18px;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition-base);
}

.hamburger.active span:first-child {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:last-child {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-primary);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-links {
    text-align: center;
}

.mobile-nav-links li {
    margin-bottom: var(--spacing-lg);
}

.mobile-nav-links li a {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.mobile-nav-links li a:hover {
    color: var(--color-accent);
}

.mobile-login-btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--color-accent);
    color: var(--color-text-dark) !important;
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-md);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom,
            rgba(14, 14, 14, 0.4) 0%,
            rgba(14, 14, 14, 0.6) 50%,
            rgba(14, 14, 14, 0.95) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
    animation: fadeInUp 1s ease forwards;
    transition: opacity 0.3s ease;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    animation: fadeInUp 1s ease 0.2s forwards;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hero-slider-dots {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition-base);
}

.dot.active {
    background: var(--color-accent);
    width: 32px;
}

/* CTA Buttons */
.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-base);
    animation: fadeInUp 1s ease 0.4s forwards;
    opacity: 0;
}

.cta-btn.primary {
    background: var(--color-accent);
    color: var(--color-text-dark);
}

.cta-btn.primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.cta-btn.secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-accent);
}

.cta-btn.secondary:hover {
    background: var(--color-accent);
    color: var(--color-text-dark);
}

.cta-btn.dark {
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
}

.cta-btn.dark:hover {
    background: var(--color-bg-secondary);
    transform: translateY(-2px);
}

.cta-btn.full-width {
    width: 100%;
}

/* ===================================
   GLOBAL SECTION
   =================================== */
.global-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-primary);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.section-title.light {
    color: var(--color-text-primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.section-subtitle.light {
    color: var(--color-text-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition-base);
}

.stat-card:hover {
    background: var(--color-card-bg-hover);
    transform: translateY(-4px);
    border-color: var(--color-accent);
}

.stat-number {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* ===================================
   SERVICES SECTION
   =================================== */
.services-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(211, 225, 126, 0.3);
    box-shadow: var(--shadow-md);
}

.service-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

.service-card:hover .service-image img {
    transform: scale(1.08);
}

.service-content {
    padding: var(--spacing-lg);
}

.service-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.service-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    transition: var(--transition-base);
}

.read-more:hover {
    gap: var(--spacing-sm);
}

.arrow-icon {
    width: 16px;
    height: 16px;
}

/* ===================================
   CHAT SECTION
   =================================== */
.chat-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-primary);
}

.chat-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.chat-text h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.chat-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.chat-features {
    margin-bottom: var(--spacing-xl);
}

.chat-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.check-icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.chat-visual {
    display: flex;
    justify-content: center;
}

.chat-mockup {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-card-bg);
    border-bottom: 1px solid var(--color-border);
}

.chat-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-full);
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.chat-status {
    font-size: var(--font-size-xs);
    color: var(--color-accent);
}

.chat-messages {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.message {
    max-width: 85%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    position: relative;
}

.message p {
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin-bottom: 4px;
    color: var(--color-text-primary);
}

.message .time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.message.received {
    background: var(--color-card-bg);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.message.sent {
    background: var(--color-accent);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.sent p {
    color: var(--color-text-dark);
}

.message.sent .time {
    color: rgba(0, 0, 0, 0.5);
}

/* ===================================
   APP SECTION
   =================================== */
.app-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-accent);
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.app-text h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
}

.app-text p {
    font-size: var(--font-size-lg);
    color: rgba(0, 0, 0, 0.7);
    margin-bottom: var(--spacing-xl);
}

.app-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.app-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text-dark);
}

.feature-icon {
    font-size: var(--font-size-xl);
}

.app-visual {
    display: flex;
    justify-content: center;
}

.app-mockup-image {
    max-width: 350px;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

/* ===================================
   TESTIMONIALS SECTION
   =================================== */
.testimonials-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.testimonial-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
}

.testimonial-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.testimonial-stars {
    color: var(--color-accent);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
}

.testimonial-card>p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
    color: var(--color-text-dark);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.author-title {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contact-info h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-align: left;
}

.contact-info>p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.contact-item a:hover {
    color: var(--color-accent);
}

.contact-icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: var(--transition-base);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-card-bg-hover);
}

.form-group select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .cta-btn {
    opacity: 1;
    animation: none;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-logo:hover {
    color: var(--color-accent);
}

.footer-brand p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-column ul li a:hover {
    color: var(--color-accent);
}

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

.footer-copyright p {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.footer-company {
    margin-top: 4px;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-card-bg);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--color-accent);
}

.social-link:hover svg {
    color: var(--color-text-dark);
}

.social-link svg {
    width: 18px;
    height: 18px;
    color: var(--color-text-primary);
}

/* ===================================
   WHATSAPP BUTTON
   =================================== */
.whatsapp-btn {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    z-index: 999;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
}

.whatsapp-btn svg {
    width: 32px;
    height: 32px;
    color: white;
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* Scroll Animations */
.service-card,
.stat-card,
.testimonial-card {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.service-card.animate,
.stat-card.animate,
.testimonial-card.animate {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 1024px) {

    .stats-grid,
    .services-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chat-content,
    .app-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .app-visual {
        order: -1;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {

    .nav-links,
    .login-btn {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .stats-grid,
    .services-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .chat-text h2,
    .app-text h2,
    .contact-info h2 {
        font-size: var(--font-size-3xl);
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .app-features {
        grid-template-columns: 1fr;
    }

    .whatsapp-btn {
        width: 52px;
        height: 52px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }

    .whatsapp-btn svg {
        width: 28px;
        height: 28px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        min-height: 600px;
    }

    .cta-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}