:root {
    --primary-color: #005baa;
    --primary-dark: #004a8c;
    --secondary-color: #00a0e3;
    --accent-color: #ffd700;
    --text-color: #333;
    --light-bg: #f9f9f9;
    --white: #ffffff;
    --transition: all 0.3s ease;
    --navbar-height: 90px;
    --navbar-height-scrolled: 70px;
    --navbar-padding: 1rem;
    --navbar-bg-gradient: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    --navbar-bg-scrolled: rgba(255, 255, 255, 0);
    --navbar-shadow: none;
    --navbar-shadow-scrolled: 0 4px 20px rgba(0, 0, 0, 0.1);
    --navbar-gradient: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    --navbar-bg: #ffffff;
    --text-gradient: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    --section-light: #ffffff;
    --section-dark: #f8f9fa;
    --section-accent: #eef2f7;
    --border-color: rgba(0, 0, 0, 0.08);
    --section-padding: 5rem 0;
    --bio-primary: #4CAF50;
    --bio-secondary: #81C784;
    --bio-accent: #2E7D32;
    --bio-gradient: linear-gradient(135deg, var(--bio-primary) 0%, var(--bio-secondary) 100%);
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;

    /* Responsive navbar heights */
    --navbar-height: 90px;
    --navbar-height-mobile: 70px;
    --navbar-height-scrolled: 70px;
    --navbar-height-scrolled-mobile: 60px;

    /* Responsive container widths */
    --container-max-width: 1200px;
    --container-padding: 2rem;
    --container-padding-mobile: 1rem;
}

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

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


/* Responsive container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--container-padding-mobile);
    }
}

/* Responsive utilities */
.hide-on-mobile {
    display: initial;
}

.show-on-mobile {
    display: none;
}

@media (max-width: 768px) {
    .hide-on-mobile {
        display: none;
    }

    .show-on-mobile {
        display: initial;
    }
}

/* Responsive spacings */
:root {
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2.5rem;
    }
}