/* Base Styles - Colors, Typography, and Layout */
:root {
    /* Color Variables */
    --primary-color: #333333;
    --secondary-color: #666666;
    --accent-color: #ffffff;
    --background-color: #ffffff;
    --text-color: #333333;
    --border-color: rgba(128, 128, 128, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --hover-bg: rgba(255, 255, 255, 0.9);
    
    /* Typography */
    --font-family: 'Montserrat', sans-serif;
    --line-height: 1.4;
    
    /* Layout */
    --container-max-width: 95%;
    --container-padding: 20px;
    --navbar-height: 70px;
    --border-radius: 8px;
    
    /* Transitions */
    --transition-smooth: 0.3s ease;
    --transition-fast: 0.1s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--text-color);
    background-color: var(--background-color);
    scroll-behavior: smooth;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}


/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--border-color);
    z-index: 9999;
}

.scroll-progress-bar {
    width: 100%;
    height: 0%;
    background: var(--secondary-color);
    transition: height var(--transition-fast);
}

/* Navigation Base Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-smooth);
}

.navbar-transparent {
    background: transparent;
    transition: all var(--transition-smooth);
    box-shadow: none;
}

.navbar-transparent.scrolled,
.navbar-transparent.mobile-menu-open {
    background: var(--hover-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px var(--shadow-color);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo Base Styles */
.logo-link {
    text-decoration: none;
    transition: opacity var(--transition-smooth);
}

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

.logo-img,
.logo-image {
    height: var(--navbar-height);
    width: auto;
    object-fit: contain;
}

/* Button Base Styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
    font-family: var(--font-family);
}

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

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

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }
.p-3 { padding: 3rem; }

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --container-max-width: 100%;
        --container-padding: 15px;
        --navbar-height: 50px;
    }
    
    .container {
        max-width: 90%;
        padding: 0;
    }
}