/* Responsive Typography System - Auto-adjusting font sizes */

/* Base font size using clamp() for fluid scaling */
:root {
    /* Fluid font scaling using viewport units */
    --base-font-size: clamp(16px, 2.5vw, 18px);
    --small-font-size: clamp(12px, 2vw, 16px);
    --large-font-size: clamp(16px, 3vw, 22px);
    
    /* Heading scales */
    --h1-size: clamp(1.8rem, 4vw, 3rem);
    --h2-size: clamp(1.5rem, 3.5vw, 2.5rem);
    --h3-size: clamp(1.3rem, 3vw, 2rem);
    --h4-size: clamp(1.1rem, 2.5vw, 1.75rem);
    --h5-size: clamp(1rem, 2vw, 1.5rem);
    --h6-size: clamp(0.9rem, 1.8vw, 1.25rem);
    
    /* Line heights that scale with font size */
    --base-line-height: clamp(1.3, 1.5, 1.7);
    --heading-line-height: clamp(1.1, 1.3, 1.5);
    
    /* Spacing that scales with screen size */
    --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
    --space-sm: clamp(0.5rem, 1vw, 1rem);
    --space-md: clamp(1rem, 2vw, 2rem);
    --space-lg: clamp(1.5rem, 3vw, 3rem);
    --space-xl: clamp(2rem, 4vw, 4rem);
    
    /* Container padding that scales */
    --container-padding: clamp(1rem, 3vw, 2rem);
    --section-padding: clamp(2rem, 5vw, 4rem);
}

/* Apply responsive base font size */
html {
    font-size: var(--base-font-size);
}

body {
    font-size: 1rem;
    line-height: var(--base-line-height);
}

/* Responsive headings */
h1, .h1 {
    font-size: var(--h1-size);
    line-height: var(--heading-line-height);
    margin-bottom: var(--space-md);
}

h2, .h2 {
    font-size: var(--h2-size);
    line-height: var(--heading-line-height);
    margin-bottom: var(--space-sm);
}

h3, .h3 {
    font-size: var(--h3-size);
    line-height: var(--heading-line-height);
    margin-bottom: var(--space-sm);
}

h4, .h4 {
    font-size: var(--h4-size);
    line-height: var(--heading-line-height);
    margin-bottom: var(--space-xs);
}

h5, .h5 {
    font-size: var(--h5-size);
    line-height: var(--heading-line-height);
}

h6, .h6 {
    font-size: var(--h6-size);
    line-height: var(--heading-line-height);
}

/* Responsive text elements */
p {
    font-size: 1rem;
    line-height: var(--base-line-height);
    margin-bottom: var(--space-sm);
}

.text-small {
    font-size: var(--small-font-size);
}

.text-large {
    font-size: var(--large-font-size);
}

/* Button sizing that scales */
.btn {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(1rem, 3vw, 1.5rem);
    border-radius: clamp(0.5rem, 1vw, 0.75rem);
}

.btn-lg {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    padding: clamp(0.75rem, 2vw, 1rem) clamp(1.5rem, 4vw, 2rem);
}

.btn-sm {
    font-size: clamp(0.8rem, 1.5vw, 1rem);
    padding: clamp(0.4rem, 1vw, 0.6rem) clamp(0.8rem, 2vw, 1.2rem);
}

/* Card and container scaling */
.card, .modal-content {
    padding: var(--container-padding);
    border-radius: clamp(0.5rem, 1vw, 1rem);
}

.container, .container-fluid {
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* Form elements scaling */
.form-control, .form-select {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(0.75rem, 2vw, 1rem);
    border-radius: clamp(0.25rem, 0.5vw, 0.5rem);
}

.form-label {
    font-size: clamp(0.9rem, 1.8vw, 1.1rem);
    margin-bottom: var(--space-xs);
}

/* Navigation and menu scaling */
.navbar-brand {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
}

.nav-link {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    padding: clamp(0.5rem, 1vw, 0.75rem) clamp(1rem, 2vw, 1.5rem);
}

/* Modal scaling */
.modal-title {
    font-size: var(--h3-size);
}

.modal-body {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    line-height: var(--base-line-height);
}

/* Badge and notification scaling */
.badge {
    font-size: clamp(0.7rem, 1.5vw, 0.9rem);
    padding: clamp(0.25rem, 0.5vw, 0.4rem) clamp(0.5rem, 1vw, 0.75rem);
}

/* Toast and alert scaling */
.toast, .alert {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    padding: var(--space-sm);
    border-radius: clamp(0.5rem, 1vw, 0.75rem);
}

/* Specific breakpoints for extreme sizes */
@media (max-width: 320px) {
    :root {
        --base-font-size: 12px;
        --container-padding: 0.5rem;
    }
}

@media (min-width: 1920px) {
    :root {
        --base-font-size: 20px;
        --container-padding: 3rem;
    }
}

/* High DPI display adjustments */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    :root {
        --base-font-size: clamp(15px, 2.5vw, 19px);
    }
}

/* Accessibility: Respect user's font size preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Large text preference */
@media (prefers-contrast: high) {
    :root {
        --base-font-size: clamp(16px, 3vw, 20px);
    }
}