/* Protokoll Styles - Abedulce Dental Symbiose */

/* ===== CSS Variables ===== */
:root {
    /* Brand Colors */
    --primary: #2d5a3d;
    --primary-dark: #1a3625;
    --primary-light: #3d7a5d;
    --accent: #8cc63f;
    --accent-hover: #7ab82f;
    
    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --gray: #6c757d;
    --dark-gray: #343a40;
    --black: #212529;
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-light: #868e96;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Layout */
    --nav-height: 60px;
    --content-max-width: 800px;
    --sidebar-width: 250px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Loading Screen ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--light-gray);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Fixed Navigation ===== */
.fixed-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: transform var(--transition-base);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary);
    margin: 0;
    flex: 1;
    text-align: center;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background: var(--off-white);
    border-color: var(--gray);
}

.nav-btn:active {
    transform: scale(0.98);
}

.home-btn {
    font-size: var(--font-size-xl);
    padding: var(--spacing-sm);
}

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

.pdf-btn:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* ===== Language Menu ===== */
.lang-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.lang-menu-header {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.lang-menu-header h3 {
    color: var(--white);
    font-size: var(--font-size-2xl);
}

.close-btn {
    width: 40px;
    height: 40px;
    background: var(--white);
    border: none;
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.close-btn:hover {
    background: var(--off-white);
    transform: scale(1.1);
}

.lang-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    max-width: 800px;
    width: 90%;
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-height: 80vh;
    overflow-y: auto;
}

.lang-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--off-white);
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: var(--white);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.lang-option.active {
    background: var(--primary);
    color: var(--white);
}

.lang-code {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.lang-name {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ===== Main Content ===== */
.main-content {
    margin-top: var(--nav-height);
    min-height: calc(100vh - var(--nav-height));
}

.protocol-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-lg);
}

/* ===== Protocol Header ===== */
.protocol-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--light-gray);
}

.protocol-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.protocol-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Table of Contents ===== */
.toc {
    background: var(--off-white);
    border-radius: 8px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

.toc h2 {
    font-size: var(--font-size-2xl);
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
}

#toc-list {
    list-style: none;
    counter-reset: toc-counter;
}

#toc-list li {
    counter-increment: toc-counter;
    margin-bottom: var(--spacing-sm);
}

#toc-list a {
    display: flex;
    align-items: baseline;
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

#toc-list a::before {
    content: counter(toc-counter) ". ";
    font-weight: 600;
    color: var(--primary);
    margin-right: var(--spacing-sm);
}

#toc-list a:hover {
    color: var(--primary);
}

/* ===== Protocol Sections ===== */
.protocol-section {
    margin-bottom: var(--spacing-xxl);
    scroll-margin-top: calc(var(--nav-height) + var(--spacing-xl));
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--light-gray);
}

.section-content {
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--text-primary);
}

.section-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--primary-dark);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.section-content h4 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.section-content p {
    margin-bottom: var(--spacing-md);
}

.section-content ul,
.section-content ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.section-content li {
    margin-bottom: var(--spacing-sm);
}

.section-content strong {
    font-weight: 600;
    color: var(--primary-dark);
}

.section-content em {
    font-style: italic;
    color: var(--text-secondary);
}

.section-content blockquote {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--off-white);
    border-left: 4px solid var(--primary);
    font-style: italic;
}

/* ===== Protocol Footer ===== */
.protocol-footer {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--light-gray);
    text-align: center;
    color: var(--text-secondary);
}

.protocol-footer p {
    margin-bottom: var(--spacing-sm);
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ===== Dark Mode Support ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --white: #1a1a1a;
        --off-white: #2a2a2a;
        --light-gray: #3a3a3a;
        --gray: #888;
        --dark-gray: #ccc;
        --black: #f8f9fa;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
        --text-light: #868e96;
    }
    
    .fixed-nav,
    .lang-menu .lang-grid {
        background: var(--white);
    }
    
    .nav-btn {
        background: var(--off-white);
        color: var(--text-primary);
    }
    
    .spinner {
        border-color: var(--light-gray);
        border-top-color: var(--accent);
    }
}

/* ===== Mobile Responsive ===== */
@media (max-width: 768px) {
    :root {
        --nav-height: 56px;
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-title {
        font-size: var(--font-size-lg);
    }
    
    .nav-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .protocol-container {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .protocol-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .lang-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 40px;
        height: 40px;
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 480px) {
    .nav-title {
        display: none;
    }
    
    .nav-container {
        justify-content: space-between;
    }
    
    .protocol-title {
        font-size: var(--font-size-2xl);
    }
    
    .protocol-subtitle {
        font-size: var(--font-size-base);
    }
}

/* ===== Print Styles ===== */
@media print {
    /* Reset colors for print */
    * {
        color: #000 !important;
        background: #fff !important;
        box-shadow: none !important;
    }
    
    /* Hide navigation and interactive elements */
    .fixed-nav,
    .lang-menu,
    .back-to-top,
    .toc {
        display: none !important;
    }
    
    /* Reset layout for print */
    .main-content {
        margin-top: 0;
    }
    
    .protocol-container {
        max-width: none;
        padding: 0;
        margin: 0;
    }
    
    /* Page setup */
    @page {
        size: A4;
        margin: 2cm;
    }
    
    /* Typography for print */
    body {
        font-size: 11pt;
        line-height: 1.5;
        font-family: "Times New Roman", Times, serif;
    }
    
    h1, h2, h3, h4 {
        font-family: Arial, Helvetica, sans-serif;
        page-break-after: avoid;
    }
    
    .protocol-title {
        font-size: 24pt;
        margin-bottom: 12pt;
    }
    
    .protocol-subtitle {
        font-size: 14pt;
        margin-bottom: 24pt;
    }
    
    .section-title {
        font-size: 18pt;
        margin-top: 24pt;
        margin-bottom: 12pt;
        border-bottom: 1pt solid #000;
    }
    
    h3 {
        font-size: 14pt;
        margin-top: 18pt;
        margin-bottom: 6pt;
    }
    
    h4 {
        font-size: 12pt;
        margin-top: 12pt;
        margin-bottom: 6pt;
    }
    
    p {
        margin-bottom: 6pt;
        text-align: justify;
    }
    
    /* Lists */
    ul, ol {
        margin-left: 20pt;
        margin-bottom: 6pt;
    }
    
    li {
        margin-bottom: 3pt;
    }
    
    /* Blockquotes */
    blockquote {
        margin: 12pt 0;
        padding: 6pt 12pt;
        border-left: 2pt solid #000;
        font-style: italic;
    }
    
    /* Page breaks */
    .protocol-section {
        page-break-before: auto;
        page-break-inside: avoid;
    }
    
    .protocol-header {
        page-break-after: avoid;
    }
    
    /* Footer for print */
    .protocol-footer {
        margin-top: 24pt;
        padding-top: 12pt;
        border-top: 1pt solid #000;
        font-size: 9pt;
        text-align: center;
    }
    
    /* Page numbers */
    @bottom-right {
        content: counter(page);
    }
    
    /* URL display for links */
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 9pt;
        font-style: italic;
    }
    
    /* Avoid widows and orphans */
    p, li, blockquote {
        orphans: 3;
        widows: 3;
    }
}