/* ============================================
   CSS VARIABLES & ROOT STYLES
   ============================================ */
:root {
    /* Color Palette - Navy Blue, White, Emerald Green */
    --primary-color: #0A2463;        /* Navy Blue */
    --primary-dark: #051639;         /* Darker Navy */
    --primary-light: #1E3A8A;        /* Lighter Navy */
    --secondary-color: #10B981;      /* Emerald Green */
    --secondary-light: #34D399;      /* Light Emerald */
    --secondary-dark: #059669;       /* Dark Emerald */
    --accent-color: #3B82F6;         /* Bright Blue Accent */
    
    --white: #FFFFFF;
    --light-bg: #F8FAFC;
    --light-gray: #F1F5F9;
    --gray: #94A3B8;
    --dark-gray: #64748B;
    --text-primary: #1E293B;
    --text-secondary: #475569;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(10, 36, 99, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(10, 36, 99, 0.1), 0 2px 4px -1px rgba(10, 36, 99, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(10, 36, 99, 0.1), 0 4px 6px -2px rgba(10, 36, 99, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(10, 36, 99, 0.1), 0 10px 10px -5px rgba(10, 36, 99, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

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

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section-padding {
    padding: var(--section-padding);
}

.text-center {
    text-align: center;
}

.bg-light {
    background-color: var(--light-bg);
}

.highlight {
    color: var(--secondary-color);
    position: relative;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.75rem;
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--secondary-color);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--secondary-color);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-toggle i {
    font-size: 0.75rem;
    transition: var(--transition-fast);
}

.dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 250px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-smooth);
    padding: 0.5rem 0;
    margin-top: 1rem;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
}

.dropdown-menu a:hover {
    background: var(--light-bg);
    color: var(--secondary-color);
}

.dropdown-menu i {
    font-size: 1rem;
    width: 20px;
    color: var(--secondary-color);
}

/* Submenu */
.dropdown-submenu {
    position: relative;
}

.submenu-items {
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: var(--transition-smooth);
    padding: 0.5rem 0;
}

.dropdown-submenu:hover .submenu-items {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.submenu-items a {
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    padding: 0.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 1.5rem;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-smooth);
}

.nav-cta {
    margin-left: 1rem;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 50%, var(--primary-color) 100%);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero-title .highlight {
    color: var(--secondary-color);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-buttons .btn-outline {
    border-color: var(--white);
    color: var(--white);
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 5rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-indicator span {
    width: 4px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 2px;
    animation: scroll-down 2s infinite;
}

@keyframes scroll-down {
    0%, 100% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateY(12px);
        opacity: 0.5;
    }
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
    margin-bottom: 4rem;
}

.section-title {
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-category-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.service-category-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary-color));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.service-category-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.service-category-card > p {
    margin-bottom: 1.5rem;
}

.service-list {
    margin-bottom: 2rem;
}

.service-list li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--light-gray);
}

.service-list li:last-child {
    border-bottom: none;
}

.service-list i {
    color: var(--secondary-color);
    font-size: 0.875rem;
}

/* ============================================
   WHY CHOOSE US SECTION
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
}

.feature-card p {
    margin: 0;
    font-size: 0.9375rem;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
}

.rating i {
    color: #FFA500;
    font-size: 1.125rem;
}

.testimonial-text {
    font-size: 1.0625rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    font-size: 1.75rem;
    color: var(--white);
}

.author-info h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.author-info p {
    font-size: 0.875rem;
    color: var(--dark-gray);
    margin: 0;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.15) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    z-index: 1;
    color: var(--white);
}

.cta-content h2 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn-outline {
    border-color: var(--white);
    color: var(--white);
}

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

/* ============================================
   NEWSLETTER SECTION
   ============================================ */
.newsletter-content {
    max-width: 700px;
    margin: 0 auto;
}

.newsletter-text {
    text-align: center;
    margin-bottom: 2rem;
}

.newsletter-text h2 {
    margin-bottom: 0.5rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.newsletter-message {
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}

.newsletter-message.success {
    color: var(--secondary-color);
}

.newsletter-message.error {
    color: #EF4444;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
}

.footer-logo i {
    color: var(--secondary-color);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-smooth);
}

.footer-section ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.contact-info i {
    color: var(--secondary-color);
    margin-top: 0.25rem;
    min-width: 20px;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

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

/* ============================================
   WHATSAPP FLOATING BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-xl);
    z-index: 999;
    transition: var(--transition-smooth);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 20px 30px rgba(37, 211, 102, 0.4);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 998;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-dark);
    transform: translateY(-5px);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}