/* MESHCARE.CO - Main Stylesheet
 * MESH B.V. © 2025
 * ISO 13485:2016 & IEC 62366:2015 Compliant Design System
 */

:root {
    /* MESH Core Brand Colors (Unchangeable) */
    --mesh-teal: #02827e;
    --mesh-white: #ffffff;
    --mesh-dark: #1a1a1a;

    /* MESH Color Variants for Consistency */
    --mesh-teal-light: #4a9c99;
    --mesh-teal-lighter: #7db5b3;
    --mesh-teal-dark: #015854;
    --mesh-white-90: rgba(255, 255, 255, 0.9);
    --mesh-white-80: rgba(255, 255, 255, 0.8);
    --mesh-white-60: rgba(255, 255, 255, 0.6);
    --mesh-white-30: rgba(255, 255, 255, 0.3);
    --mesh-white-10: rgba(255, 255, 255, 0.1);

    /* Usability Engineering Standards (IEC 62366:2015) */
    --medical-touch-target: 44px;
    --medical-response-time: 100ms;
    --cognitive-load-opacity: 0.8;

    /* Typography - INTER ONLY per MESH brand guidelines */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;

    /* Transitions */
    --transition-fast: 100ms ease-out;
    --transition-normal: 300ms ease-out;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background: var(--mesh-teal);
    color: var(--mesh-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(2, 130, 126, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: background var(--transition-normal);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--mesh-white);
    transition: opacity var(--transition-fast);
}

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

.logo-svg {
    width: 40px;
    height: 40px;
    color: var(--mesh-white);
    fill: var(--mesh-white);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-link {
    color: var(--mesh-white);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 16px;
    border-radius: 6px;
    transition: background var(--transition-fast);
    min-height: var(--medical-touch-target);
    display: flex;
    align-items: center;
}

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

/* Mobile Navigation Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--mesh-white);
    font-size: 1.5rem;
    cursor: pointer;
    min-width: var(--medical-touch-target);
    min-height: var(--medical-touch-target);
    padding: 0;
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--mesh-white);
    outline-offset: 2px;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(2, 130, 126, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        justify-content: flex-start;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    min-height: var(--medical-touch-target);
    min-width: var(--medical-touch-target);
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background: var(--mesh-white);
    color: var(--mesh-teal);
    border-color: var(--mesh-white);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--mesh-white);
    border-color: var(--mesh-white);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
    transition: all 50ms;
}

/* Footer */
.site-footer {
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.footer-logo {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    color: var(--mesh-white);
    fill: var(--mesh-white);
    display: block;
}

.footer-text {
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin: var(--spacing-md) 0;
}

.footer-nav a {
    color: var(--mesh-white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    padding: 8px 12px;
    min-height: var(--medical-touch-target);
    display: flex;
    align-items: center;
}

.footer-nav a:hover {
    opacity: 1;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.footer-link {
    color: var(--mesh-white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-link:hover {
    opacity: 1;
}

.copyright {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        padding: var(--spacing-sm);
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--mesh-teal);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-sm);
        border-radius: 8px;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .mobile-menu-toggle {
        display: none;
    }
}