/* CSS Variables */
:root {
    --color-primary: #0067b1;
    --color-primary-dark: #004d87;
    --color-primary-light: #0080d9;
    --color-accent: #50c8e8;
    --color-accent-dark: #3ab0d0;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-background: #ffffff;
    --color-background-alt: #f5f7fa;
    --color-border: #e0e0e0;
    --color-footer: #002a4a;
    --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    --container-width: 1200px;
    --header-height: 80px;
    --border-radius: 8px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.3;
    color: var(--color-primary-dark);
}

h1 {
    font-size: 2.75rem;
    font-weight: 700;
}

h2 {
    font-size: 2.25rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.section-intro {
    text-align: center;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

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

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

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-background);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text);
    padding: 0.5rem 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link-external::after {
    content: ' \2197';
    position: static;
    background: none;
}

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

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    transition: var(--transition);
}

/* Hero */
.hero {
    padding: calc(var(--header-height) + 4rem) 0 4rem;
    background: linear-gradient(135deg, var(--color-background-alt) 0%, var(--color-background) 100%);
}

.hero .container {
    text-align: center;
    max-width: 800px;
}

.hero-content h1 {
    margin-bottom: 1.5rem;
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Features */
.features {
    padding: 5rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: linear-gradient(135deg, rgba(0, 103, 177, 0.1) 0%, rgba(80, 200, 232, 0.15) 100%);
    border: 1px solid rgba(0, 103, 177, 0.15);
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 103, 177, 0.1);
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.feature-link {
    background: none;
    border: none;
    color: var(--color-primary);
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0;
    transition: var(--transition);
}

.feature-link:hover {
    color: var(--color-primary-dark);
}

.feature-link::after {
    content: ' \2192';
}

/* Stats */
.stats {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    display: inline;
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 600;
}

.stat-prefix {
    font-size: 2rem;
    font-weight: 600;
}

.stat-label {
    display: block;
    font-size: 1rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

/* Benefits / Accordion */
.benefits {
    padding: 5rem 0;
    background-color: var(--color-background-alt);
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background: white;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: white;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: var(--color-background-alt);
}

.accordion-icon {
    width: 20px;
    height: 20px;
    position: relative;
    flex-shrink: 0;
}

.accordion-icon::before,
.accordion-icon::after {
    content: '';
    position: absolute;
    background-color: var(--color-primary);
    transition: var(--transition);
}

.accordion-icon::before {
    width: 100%;
    height: 2px;
    top: 50%;
    transform: translateY(-50%);
}

.accordion-icon::after {
    width: 2px;
    height: 100%;
    left: 50%;
    transform: translateX(-50%);
}

.accordion-item.active .accordion-icon::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
}

.accordion-item.active .accordion-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
}

.accordion-item.active .accordion-icon::before,
.accordion-item.active .accordion-icon::after {
    background-color: white;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-content p {
    padding: 1.5rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Contact */
.contact {
    padding: 5rem 0;
    background-color: var(--color-background-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-info h3 {
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.contact-info > p {
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item strong {
    display: block;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-background-alt);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: white;
}

.contact-form .btn {
    width: 100%;
}

.form-response {
    margin: 1rem 0;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    text-align: center;
    color: var(--color-primary);
    font-weight: 500;
}

.form-response:empty {
    display: none;
}

/* Footer */
.footer {
    background-color: var(--color-footer);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    height: 40px;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 300px;
}

.footer-links h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    padding: 2.5rem;
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--color-text-light);
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-content h3 {
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.modal-content p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

.modal-content ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.modal-content li {
    margin-bottom: 0.75rem;
    color: var(--color-text);
    list-style: disc;
}

.modal-content li strong {
    color: var(--color-primary-dark);
}

/* Responsive */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
        gap: 0;
    }

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

    .nav-link {
        padding: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

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

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .footer-brand p {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.25rem;
    }

    .hero-tagline {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
    }
}