/**
 * Professional Fonts Collection
 * Using CDN for optimal performance and reliability
 * Includes: Inter, Roboto, Open Sans, Source Sans Pro, Montserrat, Lato
 */

/* Import Professional Fonts from Google Fonts CDN */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@100;300;400;500;700;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@200;300;400;600;700;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@100;200;300;400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Lato:wght@100;300;400;700;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@100;200;300;400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@200;300;400;500;600;700;800;900&display=swap');

/* Professional Font Stack Variables */
:root {
    /* Primary Font Stack - Inter as primary with excellent fallbacks */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Secondary Font Stack - Roboto for variety */
    --font-secondary: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Display Font Stack - Montserrat for headings */
    --font-display: 'Montserrat', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Body Font Stack - Open Sans for body text */
    --font-body: 'Open Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Modern Font Stack - Poppins for contemporary design */
    --font-modern: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Friendly Font Stack - Nunito for approachable design */
    --font-friendly: 'Nunito', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Classic Font Stack - Lato for traditional professional look */
    --font-classic: 'Lato', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    
    /* Code Font Stack - Source Sans Pro for monospace */
    --font-code: 'Source Sans Pro', 'Inter', 'Roboto', 'Monaco', 'Menlo', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
}

/* Font Utility Classes */
.font-primary { font-family: var(--font-primary); }
.font-secondary { font-family: var(--font-secondary); }
.font-display { font-family: var(--font-display); }
.font-body { font-family: var(--font-body); }
.font-modern { font-family: var(--font-modern); }
.font-friendly { font-family: var(--font-friendly); }
.font-classic { font-family: var(--font-classic); }
.font-code { font-family: var(--font-code); }

/* Weight Utilities */
.font-thin { font-weight: 100; }
.font-extralight { font-weight: 200; }
.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.font-black { font-weight: 900; }

/* Professional Typography Scale */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.text-7xl { font-size: 4.5rem; line-height: 1; }
.text-8xl { font-size: 6rem; line-height: 1; }
.text-9xl { font-size: 8rem; line-height: 1; }

/* Professional Heading Styles */
.heading-1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.025em;
}

.heading-2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.heading-3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.heading-4 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.4;
}

.heading-5 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.5;
}

.heading-6 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.5;
}

/* Body Text Styles */
.body-large {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1.7;
}

.body-regular {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
}

.body-small {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
}

/* Professional Button Typography */
.btn-text {
    font-family: var(--font-primary);
    font-weight: 500;
    letter-spacing: 0.025em;
}

/* Professional Form Typography */
.form-label {
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: 0.025em;
}

.form-input {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1rem;
}

/* Professional Table Typography */
.table-header {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.table-cell {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.875rem;
}

/* Professional Code Typography */
.code-inline {
    font-family: var(--font-code);
    font-size: 0.875em;
    font-weight: 500;
}

.code-block {
    font-family: var(--font-code);
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
}

/* Responsive Typography */
@media (max-width: 768px) {
    .heading-1 { font-size: 2.5rem; }
    .heading-2 { font-size: 2rem; }
    .heading-3 { font-size: 1.75rem; }
    .heading-4 { font-size: 1.25rem; }
    
    .body-large { font-size: 1rem; }
    .body-regular { font-size: 0.875rem; }
}

@media (max-width: 480px) {
    .heading-1 { font-size: 2rem; }
    .heading-2 { font-size: 1.75rem; }
    .heading-3 { font-size: 1.5rem; }
}