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

:root {
    --primary-color: #1a237e;
    --secondary-color: #0d47a1;
    --accent-color: #2196f3;
    --dark-color: #0a1128;
    --light-color: #f5f7fa;
    --text-color: #333333;
    --text-light: #666666;
    --success-color: #4caf50;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* HEADER */
.header {
    background: #ffffff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 80px;
    width: auto;
}

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

.nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.social-links a {
    color: var(--text-color);
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
}

.social-links a:hover {
    color: var(--accent-color);
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

/* HERO SECTION */
.hero {
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.85) 0%, rgba(13, 71, 161, 0.85) 100%),
                url('shipment\ tracking\ anywhere\ and\ anytime.jpg') center/cover no-repeat;
    color: white;
    padding: 6rem 0;
    text-align: center;
    position: relative;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.tracking-input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
}

.btn-search {
    background: var(--dark-color);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.btn-search:hover {
    transform: translateY(-2px);
}

/* ABOUT SECTION */
.about {
    padding: 5rem 0;
    background: white;
}

.about h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* SERVICES SECTION */
.services {
    padding: 5rem 0;
    background: var(--light-color);
}

.services h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

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

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin: 1.5rem 2rem 1rem 2rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
    padding: 0 2rem 2rem 2rem;
}

/* WHY CHOOSE SECTION */
.why-choose {
    padding: 5rem 0;
    background: white;
}

.why-choose h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.why-card {
    padding: 2rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: border-color 0.3s ease;
}

.why-card:hover {
    border-color: var(--accent-color);
}

.why-card h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.why-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* REVIEWS SECTION */
.reviews {
    padding: 5rem 0;
    background: var(--light-color);
}

.reviews h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.review-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.stars {
    color: #ffc107;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.review-card p {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.reviewer strong {
    display: block;
    color: var(--text-color);
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.reviewer span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* COMPARISON SECTION */
.comparison {
    padding: 5rem 0;
    background: white;
}

.comparison h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.comparison-table {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: var(--shadow);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--primary-color);
    color: white;
}

th, td {
    padding: 1.25rem;
    text-align: left;
}

th {
    font-weight: 600;
    font-size: 1.1rem;
}

tbody tr {
    border-bottom: 1px solid var(--border-color);
}

tbody tr:last-child {
    border-bottom: none;
}

tbody tr:hover {
    background: var(--light-color);
}

.check {
    color: var(--success-color);
    font-weight: 600;
}

.cross {
    color: #f44336;
}

/* CHART SECTION */
.chart-section {
    padding: 5rem 0;
    background: var(--light-color);
}

.chart-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.chart-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.chart-description {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.chart-description h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.chart-description p {
    color: var(--text-light);
    line-height: 1.7;
}

/* FAQ SECTION */
.faq {
    padding: 5rem 0;
    background: white;
}

.faq h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--light-color);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.faq-item h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.faq-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* FOOTER */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    height: 80px;
    width: auto;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    opacity: 0.8;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    color: white;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
}

.footer-social a:hover {
    opacity: 0.7;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    color: white;
    text-decoration: none;
    margin-bottom: 0.5rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-contact p {
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    opacity: 0.7;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .social-links {
        display: none;
    }

    .header-actions {
        gap: 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .tracking-form {
        flex-direction: column;
    }

    .services-grid,
    .why-grid,
    .reviews-grid,
    .chart-content {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 4rem 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .about h2,
    .services h2,
    .why-choose h2,
    .reviews h2,
    .comparison h2,
    .chart-section h2,
    .faq h2 {
        font-size: 2rem;
    }
}