/* ==================== CSS Variables ==================== */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-light: #f9fafb;
    --bg-dark: #f3f4f6;
    --border-color: #e5e7eb;
    --code-bg: #f3f4f6;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* ==================== Global Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-light);
}

/* ==================== Container ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ==================== Header ==================== */
.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-lg);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* ==================== Tabs Navigation ==================== */
.tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-button {
    flex: 1;
    min-width: 120px;
    padding: 12px 20px;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.tab-button:hover {
    background-color: var(--bg-dark);
    border-color: var(--primary-color);
}

.tab-button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ==================== Tab Content ==================== */
.content {
    background-color: var(--bg-color);
    border-radius: 8px;
    padding: 40px;
    box-shadow: var(--shadow);
    min-height: 500px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== Typography ==================== */
h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

h2 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--primary-color);
}

h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 30px;
    margin-bottom: 15px;
}

h4 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 15px;
    line-height: 1.8;
}

ul, ol {
    margin-left: 30px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 8px;
}

section {
    margin-bottom: 40px;
}

/* ==================== Code Blocks ==================== */
code {
    background-color: var(--code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "Monaco", "Courier New", monospace;
    font-size: 0.9em;
    color: var(--danger-color);
}

pre {
    background-color: var(--code-bg);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
}

pre code {
    background-color: transparent;
    padding: 0;
    color: var(--text-color);
}

/* ==================== Tables ==================== */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

thead {
    background-color: var(--primary-color);
    color: white;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background-color: var(--bg-light);
}

/* ==================== Cards ==================== */
.card {
    background-color: var(--bg-light);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.card h4 {
    margin-top: 0;
    color: var(--primary-color);
}

/* ==================== Badges ==================== */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-right: 5px;
}

.badge-success {
    background-color: var(--success-color);
    color: white;
}

.badge-warning {
    background-color: var(--warning-color);
    color: white;
}

.badge-danger {
    background-color: var(--danger-color);
    color: white;
}

.badge-primary {
    background-color: var(--primary-color);
    color: white;
}

/* ==================== Overview Tab Components ==================== */
/* Role-based Navigation Cards */
.role-navigation {
    margin: 40px 0;
}

.role-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.role-card {
    padding: 20px;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.role-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.role-card h3 {
    font-size: 1.1rem;
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--text-color);
}

.role-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

/* Tech Stack Badges */
.tech-stack-section {
    margin: 40px 0;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 15px;
}

.tech-badge {
    padding: 8px 16px;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
}

/* Quick Stats */
.quick-stats {
    margin: 40px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.stat-card {
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin: 0 0 5px 0;
}

.stat-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

/* Quick Links */
/* ==================== Overview Tab - New Components ==================== */
/* Stakeholders Section */
.stakeholders-section {
    margin: 40px 0;
}

.stakeholders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.stakeholder-card {
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary-color);
}

.stakeholder-card h3 {
    font-size: 1rem;
    color: var(--text-color);
    margin: 0 0 8px 0;
}

.stakeholder-card p {
    font-size: 0.9rem;
    margin: 3px 0;
}

.stakeholder-card .role {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Navigation Guide */
.navigation-guide {
    margin: 40px 0;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.guide-card {
    padding: 20px;
    background-color: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.guide-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.guide-card h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin: 0 0 10px 0;
}

.guide-card p {
    font-size: 0.9rem;
    color: var(--text-color);
    margin: 8px 0;
}

.guide-card .audience {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 12px;
}

/* ==================== Roadmap Tab Components ==================== */
/* Roadmap Intro */
.roadmap-intro {
    background-color: var(--bg-light);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    margin-bottom: 30px;
    font-size: 1rem;
    line-height: 1.6;
}

/* Kanban Board - 5 columns layout */
/* ==================== Epics List (Roadmap) ==================== */
.epics-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 30px 0;
}

.epic-item {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s ease;
}

.epic-item:hover {
    box-shadow: var(--shadow-lg);
}

.epic-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.epic-header h3 {
    margin: 0;
    font-size: 1.4rem;
    color: var(--text-color);
}

.epic-description {
    color: var(--text-light);
    margin-bottom: 16px;
    font-size: 1rem;
}

.epic-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 16px;
    padding: 16px;
    background-color: var(--bg-light);
    border-radius: 6px;
}

.epic-scope h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 8px;
    font-weight: 600;
}

.epic-scope ul {
    margin: 0;
    padding-left: 20px;
}

.epic-scope li {
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.epic-meta {
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    margin-top: 12px;
}

.epic-meta p {
    margin: 4px 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Epic Status Badges */
.epic-status {
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-done {
    background-color: #d1fae5;
    color: #065f46;
}

.status-progress {
    background-color: #dbeafe;
    color: #1e40af;
}

.status-todo {
    background-color: #f3f4f6;
    color: #4b5563;
}

.status-backlog {
    background-color: #fef3c7;
    color: #92400e;
}

/* Out of Scope Items */
.out-of-scope-items {
    margin: 40px 0;
}

.out-of-scope-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.out-of-scope-card {
    background-color: #fef2f2;
    border: 2px solid #fca5a5;
    border-radius: 8px;
    padding: 16px;
}

.out-of-scope-card h4 {
    color: #dc2626;
    margin: 0 0 8px 0;
}

.scope-reason {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 8px;
    font-style: italic;
}

/* Roadmap Legend */
.roadmap-legend {
    margin-top: 32px;
    padding: 16px;
    background-color: var(--bg-light);
    border-radius: 8px;
}

.status-badges {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    font-size: 0.9rem;
    margin-top: 12px;
}

.progress-fill {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* Roadmap Legend */
.roadmap-legend {
    margin: 40px 0;
    background-color: var(--bg-light);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.roadmap-legend h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.roadmap-legend ul {
    margin-left: 20px;
}

.roadmap-legend li {
    margin-bottom: 10px;
}

/* ==================== Requirements Tab Components ==================== */
/* Priority Badges */
.priority-must {
    background-color: #fee2e2;
    color: #991b1b;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* ADR Accordion */
.adr-section {
    margin: 40px 0;
}

.adr-group {
    margin: 30px 0;
}

.adr-group h3 {
    margin-top: 40px;
    margin-bottom: 20px;
}

details.adr-item {
    margin-bottom: 15px;
    padding: 15px;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

details.adr-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
}

details.adr-item summary:hover {
    color: var(--secondary-color);
}

details.adr-item[open] summary {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

/* Collapsible Sections */
details {
    margin-bottom: 15px;
}

summary {
    cursor: pointer;
    font-weight: 600;
    padding: 10px;
    background-color: var(--bg-light);
    border-radius: 4px;
}

summary:hover {
    background-color: var(--bg-dark);
}

/* ==================== Mermaid Diagrams ==================== */
.mermaid {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    text-align: center;
    border: 1px solid var(--border-color);
}

/* ==================== Blockquotes ==================== */
blockquote {
    margin: 20px 0;
    padding: 15px 20px;
    border-left: 4px solid var(--primary-color);
    background-color: var(--bg-light);
    font-style: italic;
    color: var(--text-light);
}

/* ==================== Footer ==================== */
.footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 2px solid var(--border-color);
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }

    .tabs {
        flex-direction: column;
    }

    .tab-button {
        width: 100%;
    }

    .content {
        padding: 20px;
    }

    .epic-details {
        grid-template-columns: 1fr;
    }

    .out-of-scope-grid {
        grid-template-columns: 1fr;
    }

    .role-cards {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 8px;
    }
}