/* ============================================
   Smart Credit Risk System - Documentation
   Modern Fintech Theme
   ============================================ */

:root {
    --navy-blue: #001f3f;
    --emerald-green: #50C878;
    --clean-white: #ffffff;
    --light-gray: #f5f7fa;
    --dark-gray: #2c3e50;
    --text-gray: #555;
    --border-gray: #e0e0e0;
    --sidebar-width: 280px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}

/* ============================================
   Sidebar Navigation
   ============================================ */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--navy-blue) 0%, #003366 100%);
    color: var(--clean-white);
    padding: 2rem 0;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sidebar-header {
    padding: 0 2rem 2rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 1.5rem;
}

.sidebar-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clean-white);
    margin-bottom: 0.5rem;
}

.sidebar-header p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 300;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
}

.sidebar-nav li {
    margin: 0.5rem 0;
}

.sidebar-nav a {
    display: block;
    padding: 1rem 2rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    font-size: 0.95rem;
}

.sidebar-nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--emerald-green);
    color: var(--clean-white);
    padding-left: 2.5rem;
}

.sidebar-nav a.active {
    background-color: rgba(80, 200, 120, 0.2);
    border-left-color: var(--emerald-green);
    color: var(--clean-white);
    font-weight: 600;
}

/* ============================================
   Main Content Area
   ============================================ */

.main-content {
    margin-left: var(--sidebar-width);
    padding: 3rem 4rem;
    min-height: 100vh;
}

.page-header {
    background: linear-gradient(135deg, var(--navy-blue) 0%, #003366 100%);
    color: var(--clean-white);
    padding: 3rem;
    border-radius: 12px;
    margin-bottom: 3rem;
    box-shadow: 0 4px 15px rgba(0, 31, 63, 0.2);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.95;
    line-height: 1.8;
}

/* ============================================
   Content Sections
   ============================================ */

.content-section {
    background: var(--clean-white);
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.content-section h2 {
    color: var(--navy-blue);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--emerald-green);
}

.content-section h3 {
    color: var(--navy-blue);
    font-size: 1.4rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-section p {
    color: var(--text-gray);
    margin-bottom: 1.2rem;
    font-size: 1rem;
    line-height: 1.8;
}

.content-section ul, .content-section ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-gray);
}

.content-section li {
    margin-bottom: 0.8rem;
    line-height: 1.7;
}

/* ============================================
   Code Blocks
   ============================================ */

.code-block {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border-left: 4px solid var(--emerald-green);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.code-block code {
    color: #d4d4d4;
}

.code-block .keyword {
    color: #569cd6;
}

.code-block .string {
    color: #ce9178;
}

.code-block .comment {
    color: #6a9955;
}

.code-block .function {
    color: #dcdcaa;
}

/* ============================================
   Buttons & CTAs
   ============================================ */

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--emerald-green);
    color: var(--clean-white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    margin: 0.5rem 0.5rem 0.5rem 0;
}

.btn:hover {
    background: #45b869;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(80, 200, 120, 0.3);
}

.btn-secondary {
    background: var(--navy-blue);
}

.btn-secondary:hover {
    background: #003366;
    box-shadow: 0 4px 12px rgba(0, 31, 63, 0.3);
}

/* ============================================
   Cards & Highlights
   ============================================ */

.highlight-box {
    background: linear-gradient(135deg, rgba(80, 200, 120, 0.1) 0%, rgba(0, 31, 63, 0.05) 100%);
    border-left: 4px solid var(--emerald-green);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.info-box {
    background: rgba(0, 31, 63, 0.05);
    border-left: 4px solid var(--navy-blue);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

/* ============================================
   Project Screenshot Section
   ============================================ */

.screenshot-placeholder {
    background: var(--light-gray);
    border: 2px dashed var(--border-gray);
    border-radius: 8px;
    padding: 3rem;
    text-align: center;
    color: var(--text-gray);
    margin: 2rem 0;
}

.screenshot-container {
    text-align: center;
    margin: 2rem 0;
}

.project-screenshot,
.code-screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    display: block;
    margin: 0 auto;
}

.project-screenshot {
    border: 2px solid var(--border-gray);
}

.code-screenshot {
    border: 2px solid var(--navy-blue);
    max-width: 90%;
}

@media (max-width: 768px) {
    .project-screenshot,
    .code-screenshot {
        max-width: 100%;
    }
}

/* ============================================
   FAQ Section
   ============================================ */

.faq-item {
    background: var(--clean-white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    background: var(--navy-blue);
    color: var(--clean-white);
    padding: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
    position: relative;
}

.faq-question:hover {
    background: #003366;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 1.25rem;
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer {
    padding: 1.5rem;
    color: var(--text-gray);
    line-height: 1.8;
    display: none;
    border-top: 1px solid var(--border-gray);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 2rem 1.5rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .content-section {
        padding: 1.5rem;
    }

    .mobile-menu-toggle {
        position: fixed;
        top: 1rem;
        left: 1rem;
        z-index: 1001;
        background: var(--navy-blue);
        color: var(--clean-white);
        border: none;
        padding: 0.75rem 1rem;
        border-radius: 8px;
        cursor: pointer;
        font-size: 1.2rem;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 2rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: var(--emerald-green);
    color: var(--clean-white);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 0.25rem;
}

/* ============================================
   Footer Styles
   ============================================ */

.footer {
    background: linear-gradient(180deg, var(--navy-blue) 0%, #001529 100%);
    color: var(--clean-white);
    padding: 3rem 2rem 2rem;
    margin-top: 4rem;
    border-top: 3px solid var(--emerald-green);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer h3 {
    color: var(--clean-white);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 55px;
    height: 55px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--clean-white);
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.social-link svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

.social-link span {
    display: inline-block;
    transition: transform 0.3s ease;
}

.social-link:hover {
    background: var(--emerald-green);
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 6px 20px rgba(80, 200, 120, 0.5);
    border-color: var(--emerald-green);
}

.social-link:hover svg {
    transform: scale(1.15);
}

.social-link:hover span {
    transform: scale(1.2);
}

.social-link.github:hover {
    background: #24292e;
    border-color: #24292e;
    box-shadow: 0 4px 12px rgba(36, 41, 46, 0.4);
}

.social-link.twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
    box-shadow: 0 4px 12px rgba(29, 161, 242, 0.4);
}

.social-link.linkedin:hover {
    background: #0077b5;
    border-color: #0077b5;
    box-shadow: 0 4px 12px rgba(0, 119, 181, 0.4);
}

.footer-bottom {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .footer {
        padding: 2rem 1.5rem 1.5rem;
    }
    
    .social-links {
        gap: 1rem;
    }
    
    .social-link {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
}