/* 
 * APEX VIRTUAL PARTNERS LTD - Main Stylesheet
 * Primary Color: Royal Navy Blue (#1A2B49)
 * Secondary Color: Vibrant Teal (#00BFA5)
 */

:root {
    /* Colors */
    --primary-color: #1A2B49;
    --primary-light: #28426b;
    --primary-dark: #111d33;
    --secondary-color: #00BFA5;
    --secondary-hover: #008f7a;
    --text-dark: #1A2B49;
    --text-body: #4a5568;
    --text-light: #718096;
    --white: #ffffff;
    --off-white: #f8fafc;
    --bg-light: #f5f7fa;
    --border-color: #e2e8f0;
    --success: #48bb78;
    --error: #f56565;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --header-height: 80px;
    --section-padding: 80px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-dark);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

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

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

.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-title {
    color: var(--primary-color);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-subtitle {
    color: var(--secondary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: block;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 191, 165, 0.3);
}

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

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

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

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

.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

/* Header & Navigation */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
}

.nav-link:hover, .nav-link.active {
    color: var(--secondary-color);
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-top {
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1rem;
}

.footer-heading {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

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

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact-item i {
    color: var(--secondary-color);
    margin-top: 5px;
}

.footer-bottom {
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.social-link {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .container { max-width: 900px; }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    
    .mobile-toggle { display: block; }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--white);
        flex-direction: column;
        padding: 2rem;
        transition: var(--transition);
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}