/* SIL Software Product Website Styles - Exact Color Match */
:root {
    --sil-very-dark-blue: #011c2f;
    --sil-medium-blue: #004789;
    --sil-light-blue: #00a7e0;
    --sil-nav-text: #c2c8c2;
    --sil-banner-overlay: #1d2327aa;
    --sil-text-dark: #333333;
    --sil-text-medium: #666666;
    --sil-text-light: #999999;
    --sil-bg-white: #ffffff;
    --sil-bg-light: #f8f9fa;
    --sil-bg-gray: #f5f5f5;
    --sil-border-light: #e0e0e0;
    --sil-border-medium: #cccccc;
    --sil-success: #28a745;
    --sil-warning: #ffc107;
    --sil-container-width: 1200px;
    --sil-sidebar-width: 280px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--sil-text-dark);
    background-color: var(--sil-bg-white);
}

.sil-container {
    max-width: var(--sil-container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Very Dark Blue Header Strip */
.sil-header-dark {
    background-color: var(--sil-very-dark-blue);
    color: white;
    padding: 10px 0;
}

.sil-header-layout {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.sil-logo-container {
    display: flex;
    align-items: center;
}

.sil-logo {
    height: 75px;
    width: auto;
}

.sil-header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.sil-header-actions {
    display: flex;
    align-items: center;
}

.sil-donate-btn {
    background-color: var(--sil-light-blue);
    color: white;
    padding: 4px 12px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: normal;
    font-size: 14px;
    transition: all 0.2s ease;
}

.sil-donate-btn:hover {
    background-color: #0095c7;
    transform: translateY(-1px);
}

/* Main Navigation in Dark Header */
.sil-main-nav {
    display: flex;
    justify-content: flex-end;
}

.sil-nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.sil-nav-item {
    position: relative;
}

.sil-nav-link {
    color: var(--sil-nav-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    padding: 8px 12px;
    transition: all 0.2s ease;
    display: block;
    line-height: 1;
    border-radius: 4px;
}

.sil-nav-link:hover, .sil-nav-link.active {
    background-color: #005bb9;
    color: white;
}

/* Medium Blue App Header Strip */
.sil-app-header {
    background-color: var(--sil-medium-blue);
    color: white;
    padding: 4px 0;
}

.sil-app-title-section {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.sil-app-icon {
    display: none;
}

.sil-app-title {
    font-size: 28px;
    font-weight: normal;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Light Blue Language Technology Strip (Home only) */
.sil-language-tech-strip {
    background-color: var(--sil-light-blue);
    padding: 4px 0;
    text-align: left;
}

.sil-language-tech-link {
    color: white;
    text-decoration: none;
    font-weight: normal;
    font-size: 14px;
    letter-spacing: 1px;
}

.sil-language-tech-link:hover {
    text-decoration: underline;
}

/* Breadcrumb Strip (Non-home pages) */
.sil-breadcrumb-strip {
    background-color: var(--sil-light-blue);
    color: white;
    padding: 4px 0;
}

.sil-breadcrumb-nav {
    font-size: 14px;
    font-weight: normal;
}

.sil-breadcrumb-nav a {
    color: white;
    text-decoration: none;
}

.sil-breadcrumb-nav a:hover {
    text-decoration: underline;
}

.sil-breadcrumb-separator {
    margin: 0 8px;
    color: white;
}

.sil-breadcrumb-current {
    color: white;
}

/* Banner Section (Home only) */
.sil-banner-section {
    position: relative;
}

.sil-banner {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.sil-banner-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.sil-banner-overlay {
    position: absolute;
    top: 15px;
    left: 20%;
    right: 20%;
    bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--sil-banner-overlay);
    border-radius: 12px;
}

.sil-banner-content {
    padding: 40px;
    text-align: center;
    color: white;
    max-width: 500px;
}

.sil-banner-icon {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.8)) drop-shadow(0 0 16px rgba(255, 255, 255, 0.5));
}

.sil-banner-tagline {
    font-size: 21.6px;
    margin-bottom: 25px;
    line-height: 1.4;
    font-weight: bold;
    font-style: italic;
}

.sil-banner-download-btn {
    background-color: var(--sil-medium-blue);
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 16px;
    display: inline-block;
    transition: all 0.2s ease;
}

.sil-banner-download-btn:hover {
    background-color: var(--sil-light-blue);
    color: var(--sil-very-dark-blue);
    transform: translateY(-2px);
}

/* Main Content Layout */
.sil-main {
    min-height: 500px;
    padding: 40px 0;
    background-color: var(--sil-bg-white);
}

.sil-content-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.sil-content-wrapper.with-sidebar {
    grid-template-columns: 1fr var(--sil-sidebar-width);
}

.sil-content {
    max-width: 100%;
}

/* Learn Page Sidebar */
.sil-sidebar {
    background-color: var(--sil-bg-gray);
    padding: 25px;
    border-radius: 8px;
    height: fit-content;
    position: sticky;
    top: 20px;
}

.sil-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--sil-border-medium);
}

.sil-sidebar-logo {
    width: 48px;
    height: 48px;
    border-radius: 6px;
}

.sil-sidebar-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--sil-text-dark);
}

.sil-sidebar-nav {
    list-style: none;
}

.sil-sidebar-nav li {
    margin-bottom: 8px;
}

.sil-sidebar-nav a {
    display: block;
    padding: 10px 15px;
    color: var(--sil-text-dark);
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.sil-sidebar-nav a:hover, .sil-sidebar-nav a.active {
    background-color: var(--sil-medium-blue);
    color: white;
}

.sil-sidebar-nav .nav-subsection {
    margin-left: 15px;
    margin-top: 8px;
}

.sil-sidebar-nav .nav-subsection a {
    font-size: 13px;
    color: var(--sil-text-medium);
}

/* Content Styles */
.content-section {
    margin-bottom: 50px;
}

.content-section h1 {
    font-size: 36px;
    font-weight: 700;
    color: var(--sil-text-dark);
    margin-bottom: 25px;
    line-height: 1.2;
}

.page-title {
    border-bottom: 3px solid #00a7e0;
    padding-bottom: 20px;
}

.content-section h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--sil-text-dark);
    margin: 35px 0 20px 0;
    line-height: 1.3;
}

.content-section h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--sil-text-dark);
    margin: 30px 0 15px 0;
}

.content-section h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--sil-text-dark);
    margin: 25px 0 12px 0;
}

.content-section p {
    margin-bottom: 18px;
    line-height: 1.7;
    color: var(--sil-text-dark);
}

.content-section ul, .content-section ol {
    margin: 18px 0 18px 30px;
}

.content-section li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.content-section a {
    color: var(--sil-medium-blue);
    text-decoration: none;
}

.content-section a:hover {
    text-decoration: underline;
}

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.feature-card {
    background-color: var(--sil-bg-light);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--sil-border-light);
    transition: all 0.2s ease;
}

.feature-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.feature-card h3 {
    color: var(--sil-medium-blue);
    margin-bottom: 15px;
}

.feature-card img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 6px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Download Section */
.download-section {
    background-color: var(--sil-light-blue);
    padding: 40px;
    border-radius: 8px;
    margin: 40px 0;
    text-align: center;
}

.download-section h2 {
    color: var(--sil-medium-blue);
    margin-bottom: 20px;
}

.download-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 25px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background-color: var(--sil-medium-blue);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.download-btn:hover {
    background-color: var(--sil-very-dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.download-btn-secondary {
    background-color: white;
    color: var(--sil-medium-blue);
    border: 2px solid var(--sil-medium-blue);
}

.download-btn-secondary:hover {
    background-color: var(--sil-medium-blue);
    color: white;
}

/* Tables */
.content-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.content-table th {
    background-color: var(--sil-medium-blue);
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.content-table td {
    padding: 15px;
    border-bottom: 1px solid var(--sil-border-light);
}

.content-table tr:last-child td {
    border-bottom: none;
}

.content-table tr:nth-child(even) {
    background-color: var(--sil-bg-light);
}

/* Code Blocks */
.content-section pre, .content-section code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background-color: var(--sil-bg-gray);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 14px;
}

.content-section pre {
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
    border: 1px solid var(--sil-border-light);
}

/* SIL Footer Styles */
.sil-footer {
    background-color: var(--sil-text-dark);
    color: white;
    padding: 50px 0 30px 0;
    margin-top: 60px;
}

.sil-footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.sil-footer-section h4 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.sil-footer-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sil-footer-section li {
    margin-bottom: 10px;
}

.sil-footer-section a {
    color: #cccccc;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.sil-footer-section a:hover {
    color: white;
    text-decoration: underline;
}

.sil-footer-logo {
    width: 60px;
    height: 60px;
    filter: brightness(0) invert(1);
}

.sil-footer-bottom {
    border-top: 1px solid #555555;
    padding-top: 30px;
    text-align: center;
    color: #cccccc;
    font-size: 14px;
}

.sil-footer-bottom p {
    margin-bottom: 10px;
}

.sil-footer-bottom a {
    color: var(--sil-light-blue);
    text-decoration: none;
}

.sil-footer-bottom a:hover {
    text-decoration: underline;
}

/* Warning Card Styling */
.warning-card {
    background: #fff4e5;
    border: 1.5px solid #d97a00;
    border-radius: 8px;
    padding: 10px;
}

/* Indented list for warning-card */
.warning-card ul {
    margin-left: 1.5em;
    padding-left: 0;
}
.warning-card ul li {
    text-indent: -1.5em;
    padding-left: 1.5em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sil-header-top-row {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        align-items: center;
    }
    
    .sil-main-nav {
        justify-content: center;
    }
    
    .sil-nav-menu {
        flex-direction: column;
        gap: 0;
    }
    
    .sil-nav-link {
        padding: 12px;
        text-align: center;
    }
    
    .sil-app-title-section {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .sil-app-title {
        font-size: 22px;
    }
    
    .sil-banner {
        height: 250px;
    }
    
    .sil-banner-content {
        padding: 25px;
        margin: 0 20px;
    }
    
    .sil-banner-icon {
        width: 60px;
        height: 60px;
    }
    
    .sil-banner-tagline {
        font-size: 16px;
    }
    
    .sil-content-wrapper.with-sidebar {
        grid-template-columns: 1fr;
    }
    
    .sil-sidebar {
        order: -1;
        position: static;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .sil-footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .sil-container {
        padding: 0 15px;
    }
    
    .sil-main {
        padding: 20px 0;
    }
    
    .content-section h1 {
        font-size: 28px;
    }
    
    .content-section h2 {
        font-size: 22px;
    }
    
    .download-section {
        padding: 25px 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .sil-banner-content {
        padding: 20px;
    }
}