:root {
    --primary: #003366;
    --secondary: #006699;
    --accent: #ff9900;
    --bg: #f4f6f8;
    --white: #fff;
    --text: #222;
    --muted: #555;
    --light-gray: #e9ecef;
    --dark-blue: #002244;
    --nav-bg: #ffffff;
    --nav-text: #003366;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    margin: 0;
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

/* Improved Navigation for Mobile */
.navbar {
    background: var(--nav-bg);
    color: var(--nav-text);
    padding: 0;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid var(--accent);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    min-height: 70px;
}

.navbar-logo {
    font-size: 1.4em;
    font-weight: bold;
    letter-spacing: 0.5px;
    color: var(--nav-text);
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.navbar-logo i {
    margin-right: 8px;
    color: var(--accent);
    font-size: 1.2em;
}

.navbar ul {
    list-style: none;
    display: flex;
    gap: 16px;
    margin: 0;
    padding: 0;
    align-items: center;
    justify-content: flex-end;
}

.navbar ul li a {
    color: var(--nav-text);
    text-decoration: none;
    font-weight: 600;
    padding: 12px 8px;
    transition: all 0.3s;
    position: relative;
    border-radius: 4px;
    font-size: 0.9em;
    white-space: nowrap;
}

.navbar ul li a:hover {
    color: var(--accent);
    background: rgba(0, 51, 102, 0.05);
}

.navbar ul li a::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

.navbar ul li a:hover::after {
    width: 100%;
}

.navbar ul li.disabled a {
    color: #888;
    pointer-events: none;
    opacity: 0.7;
}

.login-nav {
    color: var(--accent);
    font-size: 1.3em;
    padding: 0 8px;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: color 0.3s;
    background: transparent;
}

.login-nav:hover {
    color: #ffaa00;
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--nav-text);
    background: none;
    border: none;
    padding: 8px;
}

/* Mobile-First Hero Section */
.hero {
    background: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 51, 102, 0.85)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    margin-top: 0;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--white);
    line-height: 1.2;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    line-height: 1.5;
}

.btn {
    display: inline-block;
    background: var(--accent);
    color: var(--text);
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn:hover {
    background: #ffaa00;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.2);
}

/* Mobile-Optimized Container */
.container {
    max-width: 1200px;
    margin: 30px auto;
    background: var(--white);
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    border-radius: 12px;
    padding: 25px;
    overflow: hidden;
}

.subtitle {
    color: var(--muted);
    margin-bottom: 20px;
    font-size: 1rem;
    text-align: center;
    padding: 0 10px;
}

/* Improved Collapsible Sections for Mobile */
.collapsible-section {
    margin-bottom: 16px;
    border: 1px solid var(--light-gray);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

.collapsible-section:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.collapsible-header {
    background: var(--primary);
    color: white;
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
    -webkit-tap-highlight-color: transparent;
}

.collapsible-header:active {
    background: var(--secondary);
}

.collapsible-header h3 {
    margin: 0;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.collapsible-header i {
    transition: transform 0.3s;
    font-size: 1.1rem;
}

.collapsible-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.3s ease-out;
}

.collapsible-content.active {
    padding: 20px;
    max-height: 5000px;
}

.collapsible-section.active .collapsible-header i {
    transform: rotate(180deg);
}

/* Mobile-Optimized Grid Systems */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.service-card {
    background: var(--white);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 4px solid var(--primary);
    text-align: center;
}

.service-card:active {
    transform: scale(0.98);
}

.service-card i {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.service-card h3 {
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 1.1rem;
}

.service-card p {
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Partners Section for Mobile */
.partners {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.partner-logo {
    background: var(--light-gray);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--muted);
    transition: all 0.3s;
    aspect-ratio: 2/1;
    padding: 10px;
    text-align: center;
    font-size: 0.9rem;
}

.partner-logo:active {
    transform: scale(0.95);
}

/* Mobile-Optimized Login Form */
.login-box {
    background: #f0f4fa;
    padding: 25px;
    border-radius: 10px;
    max-width: 100%;
    margin: 0 auto;
    box-shadow: 0 1px 8px rgba(0,0,0,0.08);
}

.login-box h2 {
    margin-top: 0;
    color: var(--primary);
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.login-box input {
    width: 100%;
    padding: 14px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px; /* Prevents zoom on iOS */
    -webkit-appearance: none;
}

.login-box button {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 10px;
    transition: background 0.3s;
    font-weight: 600;
}

.login-box button:active {
    background: var(--secondary);
    transform: scale(0.98);
}

.login-box small {
    display: block;
    margin-top: 15px;
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.4;
}

/* Contact Section for Mobile */
.contact-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 8px;
}

.contact-item i {
    font-size: 1.4rem;
    color: var(--primary);
    width: 30px;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item h3 {
    margin-bottom: 5px;
    color: var(--primary);
    font-size: 1.1rem;
}

.contact-item p, .contact-item a {
    font-size: 1rem;
    color: var(--text);
    text-decoration: none;
}

.contact-item a:active {
    color: var(--accent);
}

/* Footer for Mobile */
.footer {
    background: var(--primary);
    color: var(--white);
    text-align: center;
    padding: 30px 0 20px 0;
    margin-top: 40px;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 20px 0;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.9rem;
}

.footer-links a:active {
    color: var(--accent);
}

.footer p {
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Mobile-Specific Media Queries */
@media (max-width: 768px) {
    .navbar .container {
        padding: 0 16px;
    }
    
    .navbar ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        right: 0;
        left: 0;
        width: 100%;
        background: var(--nav-bg);
        padding: 20px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.15);
        gap: 0;
        align-items: flex-start;
    }
    
    .navbar ul.active {
        display: flex;
    }
    
    .navbar ul li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
    }
    
    .navbar ul li:last-child {
        border-bottom: none;
    }
    
    .navbar ul li a {
        display: block;
        padding: 15px 10px;
        font-size: 1rem;
        width: 100%;
    }
    
    .login-nav-li {
        width: 100%;
        text-align: left;
    }
    
    .login-nav {
        display: inline-flex;
        padding: 15px 10px;
        font-size: 1rem;
        width: 100%;
    }
    
    .hamburger {
        display: block;
    }
    
    .hero {
        padding: 50px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .container {
        padding: 20px;
        margin: 20px auto;
        border-radius: 10px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .service-card {
        padding: 18px;
    }
    
    .partners {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .partner-logo {
        font-size: 0.85rem;
        padding: 8px;
    }
    
    .collapsible-header {
        padding: 16px 18px;
    }
    
    .collapsible-header h3 {
        font-size: 1.1rem;
    }
    
    .collapsible-content.active {
        padding: 18px;
    }
    
    .btn {
        padding: 16px 30px;
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .navbar-logo {
        font-size: 1.2rem;
    }
    
    .container {
        padding: 16px;
        margin: 15px auto;
    }
    
    .services-grid {
        gap: 12px;
    }
    
    .partners {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .contact-item i {
        margin: 0 auto;
    }
}

/* Touch-friendly improvements */
@media (hover: none) {
    .service-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    .partner-logo:hover {
        transform: none;
    }
}

/* Prevent zoom on iOS inputs */
@media screen and (max-width: 768px) {
    input, select, textarea {
        font-size: 16px !important;
    }
}