:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --light-gray: #e2e8f0;
    --white: #ffffff;
    --black: #000000;
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --nav-width: 320px;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    overflow-x: hidden;
    padding-top: 70px; /* Space for fixed header */
}

/* Main Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    height: 70px;
}

.logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.logo-img:hover {
    opacity: 0.9;
}

/* Desktop Navigation */
.desktop-nav {
    display: none;
}

.desktop-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.desktop-menu .nav-link {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

.desktop-menu .nav-link:hover,
.desktop-menu .nav-link.active {
    color: var(--primary);
}

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

.desktop-menu .nav-link:hover::after,
.desktop-menu .nav-link.active::after {
    width: 100%;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 500;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-size: 0.9rem;
}

.header-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.button-text {
    display: none;
}

.menu-toggle {
    background: none;
    border: none;
    width: 30px;
    height: 24px;
    position: relative;
    cursor: pointer;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    z-index: 1002;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--dark);
    border-radius: 3px;
    transition: var(--transition);
    transform-origin: center;
}

/* Mobile Navigation */
.main-navigation {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: var(--nav-width);
    height: 100vh;
    background-color: var(--primary);
    color: var(--white);
    z-index: 1001;
    transition: var(--transition);
    overflow-y: auto;
    visibility: hidden;
}

.main-navigation[aria-hidden="false"] {
    right: 0;
    visibility: visible;
}

.nav-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1.5rem;
}

.nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    padding: 0.5rem;
}

.nav-close:hover {
    transform: rotate(90deg);
}

.nav-menu {
    list-style: none;
    margin: 2rem 0;
    flex-grow: 1;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.nav-link:hover, 
.nav-link.active {
    background-color: rgba(255,255,255,0.1);
}

.nav-icon {
    width: 24px;
    text-align: center;
}

.nav-footer {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.nav-contact {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.contact-link:hover {
    opacity: 0.8;
}

.nav-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

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

.social-link:hover {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.main-navigation[aria-hidden="false"] + .nav-overlay {
    opacity: 1;
    visibility: visible;
}

/* Responsive Styles */
@media (min-width: 768px) {
    .button-text {
        display: inline;
    }
    
    .header-container {
        padding: 1rem 2rem;
    }
    
    .logo-img {
        height: 45px;
    }
}

@media (min-width: 992px) {
    .header-container {
        padding: 1rem 3rem;
    }
    
    .desktop-nav {
        display: block;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .main-navigation {
        display: none;
    }
    
    .nav-overlay {
        display: none;
    }
}