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

:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --accent-blue: #60a5fa;
    --light-blue: #dbeafe;
    --navy: #0f172a;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;

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

    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

html {
    scroll-behavior: smooth;
    font-size: 16.2px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

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

/* ===================================
   HEADER & NAVIGATION
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #0f172a;
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-cta {
    background: linear-gradient(135deg, var(--secondary-blue), var(--accent-blue));
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--white);
    cursor: pointer;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-md) var(--spacing-3xl);
    background: linear-gradient(rgba(30, 58, 138, 0.3), rgba(59, 130, 246, 0.3)), url('hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-cta {
    display: inline-block;
    background: var(--white);
    color: var(--primary-blue);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: 1.125rem;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
}

.hero-cta:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* ===================================
   SECTIONS
   =================================== */
.section {
    padding: var(--spacing-3xl) var(--spacing-md);
}

.section-alt {
    background: var(--gray-50);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-subtitle {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--secondary-blue);
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   ADVANTAGES CARDS
   =================================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.advantage-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
    text-align: center;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-blue), var(--accent-blue));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--white);
    margin: 0 auto var(--spacing-md);
}

.advantage-card h3 {
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.advantage-card p {
    color: var(--gray-600);
    margin-bottom: 0;
}

/* ===================================
   BLOG CARDS
   =================================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.blog-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
    text-align: center;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.blog-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-blue), var(--accent-blue));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--white);
    margin: 0 auto var(--spacing-md);
}

.blog-card h3 {
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.blog-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

.blog-link {
    display: inline-block;
    color: var(--primary-blue);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.blog-link:hover {
    background: var(--light-blue);
}

/* ===================================
   EXPERT SUPPORT
   =================================== */
.expert-support {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.expert-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--light-blue), var(--accent-blue));
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.expert-content h2 {
    margin-bottom: var(--spacing-md);
}

.expert-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ===================================
   TESTIMONIALS SLIDER
   =================================== */
.testimonials-slider {
    position: relative;
    margin-top: var(--spacing-xl);
    overflow: hidden;
    padding: 0 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.testimonials-track {
    display: flex;
    gap: 0;
    transition: transform var(--transition-slow);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    position: relative;
    width: calc(800px - 100px);
    min-width: calc(800px - 100px);
    max-width: calc(800px - 100px);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    min-height: 300px;
    box-sizing: border-box;
}

.testimonial-quote {
    font-size: 2rem;
    color: var(--accent-blue);
    opacity: 0.2;
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-md);
}

.testimonial-text {
    font-style: italic;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
    font-size: 1rem;
    line-height: 1.6;
}

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

.author-avatar {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1rem;
}

.author-info h4 {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.rating {
    font-size: 0.875rem;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-blue);
    transition: all var(--transition-fast);
    z-index: 10;
}

.slider-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.slider-btn-prev {
    left: 10px;
}

.slider-btn-next {
    right: 10px;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-300);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot.active {
    background: var(--primary-blue);
    width: 30px;
    border-radius: 5px;
}

/* ===================================
   FAQ SECTION
   =================================== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-blue);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-md);
}

.faq-answer-content p {
    margin-bottom: var(--spacing-sm);
}

.faq-answer-content ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.faq-answer-content li {
    margin-bottom: var(--spacing-xs);
}

/* ===================================
   CONTACT/FOOTER SECTION
   =================================== */
.contact-section {
    background-color: var(--navy);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-md);
}

.contact-section h2,
.contact-section p,
.contact-section a {
    color: var(--white);
}

.contact-section .section-subtitle {
    color: var(--accent-blue);
}

.contact-section .section-header {
    margin-bottom: var(--spacing-xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
}

.contact-info h3 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details p {
    margin-bottom: var(--spacing-xs);
    color: var(--white);
}

.contact-details strong {
    color: var(--white);
}

.contact-details a {
    color: var(--white);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-300);
}

/* ===================================
   WHATSAPP FLOATING BUTTON
   =================================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #25D366;
    color: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    width: 35px;
    height: 35px;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    }

    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.7);
    }
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #0f172a;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .expert-support {
        grid-template-columns: 1fr;
    }

    .expert-image {
        height: 300px;
    }

    .testimonial-card {
        width: 100%;
        min-width: 100%;
        max-width: 100%;
    }

    .testimonials-slider {
        padding: 0 20px;
    }

    .slider-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .whatsapp-float {
        width: 60px;
        height: 60px;
        bottom: 20px;
        right: 20px;
    }

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