:root {
    --primary-color: #003366; /* Deep Navy */
    --accent-color: #007bff;  /* Bright Blue */
    --text-color: #333333;
    --text-light: #666666;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #002244;
    --white: #ffffff;
    --container-width: 1100px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section .container, .hero .container, .page-header .container {
    animation: fadeInUp 0.8s ease-out forwards;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
}

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

.text-center { text-align: center; }
.text-white { color: var(--white); }
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--bg-dark); }
.bg-primary { background-color: var(--primary-color); }

.section-header {
    margin-bottom: 50px;
    max-width: 800px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

section.bg-dark .section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

section {
    padding: 80px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    margin-top: 2rem;
}

.hero .btn, .nav-links .btn {
    margin-top: 0;
}

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

.btn-primary:hover {
    background-color: var(--accent-color);
    color: var(--white) !important;
}

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

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

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

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

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

.btn-light:hover {
    opacity: 0.9;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Header */
header {
    background-color: var(--bg-white);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.logo img {
    height: 100px;
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    font-weight: 500;
}

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

/* Hero */
.hero {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.hero .subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 20px;
}

.hero .description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.cta-group .btn {
    margin-right: 15px;
    margin-bottom: 10px;
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

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

/* Home Visibility Gap */
.check-list {
    margin: 25px 0;
}

.check-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
}

.check-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.conclusion {
    font-size: 1.2rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 20px;
    margin-top: 30px;
}

/* Sensent Section */
.badge {
    display: inline-block;
    padding: 5px 15px;
    background-color: rgba(0, 123, 255, 0.1);
    color: var(--accent-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.img-responsive {
    width: 100%;
    height: auto;
    border-radius: 10px;
    /* box-shadow: 0 10px 30px rgba(0,0,0,0.1); */
}

/* Cards */
.card {
    background-color: rgba(255,255,255,0.05);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Bullet List */
.bullet-list li {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 10px;
}

/* Page Header */
.page-header {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: var(--white);
}

.page-header h1 {
    font-size: 3rem;
}

/* About/Content sections */
.text-max-width {
    max-width: 800px;
}

.lead {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 30px;
}

.emphasize {
    font-size: 1.2rem;
    font-style: italic;
    margin-top: 30px;
}

.highlight-box {
    background-color: var(--white);
    padding: 30px;
    border-left: 5px solid var(--accent-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    margin: 30px 0;
}

/* Approach Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step-card {
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.step-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 20px;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.service-item h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Contact Form */
.form-container {
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
}

.form-message {
    margin-top: 20px;
    padding: 10px;
    border-radius: 5px;
    display: none;
}

.form-message.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
}

.form-message.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
}

/* Footer */
footer {
    padding: 80px 0 40px;
    background-color: var(--bg-light);
    border-top: 1px solid #eee;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo img {
    height: 60px;
    margin-bottom: 20px;
}

.footer-links h4 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid #ddd;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Mobile Menu */
.menu-toggle {
    display: none;
}

@media (max-width: 768px) {
    .grid-2, .footer-content {
        grid-template-columns: 1fr;
    }

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

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 20px;
        box-shadow: 0 10px 10px rgba(0,0,0,0.05);
    }

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

    .nav-links li {
        margin: 10px 0;
        margin-left: 0;
    }

    .menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 30px;
        height: 21px;
        cursor: pointer;
    }

    .menu-toggle span {
        height: 3px;
        width: 100%;
        background-color: var(--primary-color);
        border-radius: 10px;
        transition: var(--transition);
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}