/* ===========================
   CSS Reset & Base Styles
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Brand Colors */
    --primary-blue: #458ce0;
    --navy-blue: #2a3b8e;
    --light-blue: #e8f2fc;
    --white: #ffffff;
    --black: #1a1a1a;
    --gray-100: #f7f7f7;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-600: #6b7280;
    --gray-800: #1f2937;

    /* Typography */
    --font-family: 'Barlow', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --section-padding: 80px 0;
    --container-max-width: 1200px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-base: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
}

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

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

ul {
    list-style: none;
}

/* ===========================
   Container & Layout
   =========================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--primary-blue) 100%);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

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

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    color: var(--white);
    font-weight: 500;
    transition: opacity var(--transition-base);
}

.nav-menu a:hover {
    opacity: 0.8;
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: var(--transition-base);
}

/* ===========================
   Buttons
   =========================== */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--navy-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 100px 0;
}

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

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.app-badges {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.app-badge img {
    height: 50px;
    width: auto;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

/* ===========================
   Section Headers
   =========================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--navy-blue);
}

.section-header p {
    font-size: 18px;
    color: var(--gray-600);
}

/* ===========================
   Features Section
   =========================== */
.features {
    padding: var(--section-padding);
    background: var(--gray-100);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-blue), var(--navy-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 30px;
    color: var(--white);
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--navy-blue);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===========================
   Solutions Section
   =========================== */
.solutions {
    padding: var(--section-padding);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.solution-card {
    background: var(--white);
    padding: 35px;
    border-radius: 12px;
    border: 2px solid var(--gray-200);
    transition: all var(--transition-base);
}

.solution-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.solution-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--navy-blue);
}

.solution-card p {
    color: var(--gray-600);
    margin-bottom: 20px;
}

.solution-card ul {
    list-style: none;
}

.solution-card ul li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    color: var(--gray-600);
}

.solution-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

/* ===========================
   Platform Preview Section
   =========================== */
.platform-preview {
    padding: var(--section-padding);
    background: var(--light-blue);
}

.platform-screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.screenshot-item img {
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 15px;
}

.screenshot-item p {
    font-size: 18px;
    font-weight: 600;
    color: var(--navy-blue);
}

/* ===========================
   Testimonials Section
   =========================== */
.testimonials {
    padding: var(--section-padding);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 35px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-blue);
}

.quote-icon {
    color: var(--primary-blue);
    font-size: 30px;
    margin-bottom: 20px;
}

.testimonial-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--gray-800);
    margin-bottom: 20px;
    font-style: italic;
}

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

.testimonial-author strong {
    color: var(--navy-blue);
    font-size: 18px;
}

.testimonial-author span {
    color: var(--gray-600);
    font-size: 14px;
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
}

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

.cta-content h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    margin-bottom: 30px;
}

.cta-section .app-badges {
    justify-content: center;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--gray-800);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 40px;
    margin-bottom: 15px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: var(--gray-300);
    transition: color var(--transition-base);
}

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

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--gray-600);
}

.footer-bottom p {
    color: var(--gray-300);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-image {
        order: -1;
    }

    .hero-title {
        font-size: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--navy-blue);
        flex-direction: column;
        padding: 20px;
        display: none;
        box-shadow: var(--shadow-lg);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .section-header h2 {
        font-size: 32px;
    }

    .cta-content h2 {
        font-size: 32px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 28px;
    }

    .btn-large {
        padding: 14px 30px;
        font-size: 16px;
    }

    .features-grid,
    .solutions-grid,
    .platform-screenshots,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}