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

:root {
    --bg-color: #ffffff;
    --section-bg-color: #f8f9fa;
    --text-color: #1a1a1a;
    --heading-color: #003545;
    --secondary-text-color: #666;
    --link-color: #003545;

    --btn-primary-bg: #003545;
    --btn-primary-text: white;
    --btn-primary-border: #003545;
    --btn-primary-hover-bg: #004455;

    --btn-secondary-bg: transparent;
    --btn-secondary-text: #003545;
    --btn-secondary-border: #003545;
    --btn-secondary-hover-bg: #003545;
    --btn-secondary-hover-text: white;

    --card-bg-color: white;
    --card-border-color: #e5e7eb;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 53, 69, 0.1);
    --shadow-heavy: rgba(0, 53, 69, 0.15);

    --code-bg-color: #1a1a1a;
    --code-header-bg-color: #2d2d2d;
    --code-text-color: #e5e7eb;
    --code-inline-bg: #f5f5f5;
    --code-inline-border: none;
    --code-inline-text: #1a1a1a;
    --code-highlight-bg: #f0f9ff;
    --code-highlight-border: #b3e5fc;
    --code-highlight-text: #003545;

    --table-header-bg: #003545;
    --table-header-alt-bg: #002832;
    --table-border-color: #e5e7eb;
    --table-alt-row-bg: #f8f9fa;

    --before-heading-color: #dc3545;
    --after-heading-color: #28a745;
    --comparison-border-color: #eee;

    --footer-bg: #1a1a1a;
    --footer-text: white;
    --footer-link-text: rgba(255, 255, 255, 0.8);

    --check-color: #28a745;
    --cross-color: #dc3545;
    --partial-color: #ffc107;
}

body.dark-theme {
    --bg-color: #121212;
    --section-bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --heading-color: #90CAF9;
    --secondary-text-color: #bbbbbb;
    --link-color: #90CAF9;

    --btn-primary-bg: #90CAF9;
    --btn-primary-text: #1a1a1a;
    --btn-primary-border: #90CAF9;
    --btn-primary-hover-bg: #A0D0FA;

    --btn-secondary-bg: transparent;
    --btn-secondary-text: #90CAF9;
    --btn-secondary-border: #90CAF9;
    --btn-secondary-hover-bg: #90CAF9;
    --btn-secondary-hover-text: #1a1a1a;

    --card-bg-color: #1e1e1e;
    --card-border-color: #333333;
    --shadow-light: rgba(0, 0, 0, 0.3);
    --shadow-medium: rgba(0, 0, 0, 0.2);
    --shadow-heavy: rgba(0, 0, 0, 0.3);

    --code-bg-color: #282c34;
    --code-header-bg-color: #383c44;
    --code-text-color: #abb2bf;
    --code-inline-bg: #333333;
    --code-inline-border: #444444;
    --code-inline-text: #e0e0e0;
    --code-highlight-bg: #2b3a4a;
    --code-highlight-border: #4a6a8a;
    --code-highlight-text: #e0e0e0;

    --table-header-bg: #383838;
    --table-header-alt-bg: #282828;
    --table-border-color: #333333;
    --table-alt-row-bg: #282828;

    --before-heading-color: #f48a8a;
    --after-heading-color: #8ce196;
    --comparison-border-color: #333;

    --footer-bg: #0a0a0a;
    --footer-text: #e0e0e0;
    --footer-link-text: rgba(224, 224, 224, 0.8);

    --check-color: #8ce196;
    --cross-color: #f48a8a;
    --partial-color: #f7e099;
}

body {
    font-family: 'Noto Sans', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
    transition: background 0.3s ease, color 0.3s ease;
}

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

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: 'Cal Sans', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    color: var(--heading-color);
    transition: color 0.3s ease;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    margin-bottom: 0.5rem;
}

code {
    font-family: 'Space Mono', monospace;
    background: var(--code-inline-bg);
    color: var(--code-inline-text);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border-color: var(--btn-primary-border);
}

.btn-primary:hover {
    background: var(--btn-primary-hover-bg);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border-color: var(--btn-secondary-border);
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover-bg);
    color: var(--btn-secondary-hover-text);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    padding: 80px 0 120px;
    background: linear-gradient(135deg, var(--section-bg-color) 0%, var(--bg-color) 100%);
    position: relative;
    overflow: hidden;
    transition: background 0.3s ease;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 53, 69, 0.05) 0%, transparent 70%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary-text-color);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.github-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-family: 'Space Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-color);
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--secondary-text-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Backup Flow Visualization */
.backup-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--card-bg-color);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-medium);
    border: 1px solid var(--card-border-color);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.flow-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    border-radius: 12px;
    transition: transform 0.2s ease, background 0.3s ease, color 0.3s ease;
}

.flow-item:hover {
    transform: translateY(-2px);
}

.flow-item.mariadb {
    background: linear-gradient(135deg, #003545, #004555);
    color: white;
}

.flow-item.backup-tool {
    background: linear-gradient(135deg, #FF9900, #FFB84D);
    color: white;
}

.flow-item.s3 {
    background: linear-gradient(135deg, #232F3E, #37475A);
    color: white;
}

.flow-item .icon {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.flow-item span {
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
}

.arrow {
    font-size: 1.5rem;
    color: var(--heading-color);
    font-weight: bold;
    animation: pulse 2s infinite;
    transition: color 0.3s ease;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }
}

/* Problem/Solution Section */
.problem-solution {
    padding: 80px 0;
    background: var(--section-bg-color);
    transition: background 0.3s ease;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    color: var(--heading-color);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--secondary-text-color);
}

.comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.before,
.after {
    padding: 2rem;
    border-radius: 12px;
    background: var(--card-bg-color);
    box-shadow: 0 2px 15px var(--shadow-light);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.before h3 {
    color: var(--before-heading-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.before h3::before {
    content: '❌';
}

.after h3 {
    color: var(--after-heading-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.after h3::before {
    content: '✅';
}

.comparison ul {
    list-style: none;
}

.comparison li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--comparison-border-color);
    font-size: 1rem;
    line-height: 1.4;
    transition: border-color 0.3s ease;
}

.comparison li:last-child {
    border-bottom: none;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--bg-color);
    transition: background 0.3s ease;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature {
    padding: 2rem;
    background: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: 0 2px 15px var(--shadow-light);
    border: 1px solid var(--card-border-color);
    transition: transform 0.2s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--shadow-heavy);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
}

.feature p {
    color: var(--secondary-text-color);
    line-height: 1.6;
}

/* Filesystem Access Section */
.filesystem-access {
    padding: 80px 0;
    background: var(--bg-color);
    transition: background 0.3s ease;
}

.explanation-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.explanation-item {
    padding: 2rem;
    background: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: 0 2px 15px var(--shadow-light);
    border: 1px solid var(--card-border-color);
    transition: transform 0.2s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.explanation-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--shadow-heavy);
}

.explanation-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.explanation-item h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
}

.explanation-item p {
    color: var(--secondary-text-color);
    line-height: 1.6;
}

/* Quick Start Section */
.quick-start {
    padding: 80px 0;
    background: var(--section-bg-color);
    transition: background 0.3s ease;
}

.important-note {
    margin-top: 1rem;
    padding: 1rem 1.25rem;
    border-left: 4px solid var(--partial-color);
    background: var(--section-bg-color);
    border-radius: 6px;
    color: var(--text-color);
}

.important-note strong {
    margin-right: 0.5rem;
}

.deployment-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--card-bg-color);
    border: 2px solid var(--card-border-color);
    border-radius: 8px;
    font-family: 'Noto Sans', sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-color);
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border-color: var(--btn-primary-border);
}

.tab-content {
    background: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-light);
    overflow: hidden;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.tab-pane {
    display: none;
    padding: 2rem;
}

.tab-pane.active {
    display: block;
}

.code-example {
    background: var(--code-bg-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1rem;
    transition: background 0.3s ease;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--code-header-bg-color);
    border-bottom: 1px solid var(--card-border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.code-header span {
    font-family: 'Space Mono', monospace;
    color: var(--code-text-color);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.copy-btn {
    padding: 6px 12px;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: none;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s ease, color 0.3s ease;
}

.copy-btn:hover {
    background: var(--btn-primary-hover-bg);
}

.code-example pre {
    margin: 0;
    padding: 1.5rem;
    background: transparent;
    overflow-x: auto;
}

.code-example code {
    font-family: 'Space Mono', monospace;
    background: transparent;
    color: var(--code-text-color);
    padding: 0;
    font-size: 0.9rem;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.step-description {
    color: var(--secondary-text-color);
    font-style: italic;
}

/* Configuration Section */
.configuration {
    padding: 80px 0;
    background: var(--bg-color);
    transition: background 0.3s ease;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.config-category {
    background: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: 0 2px 15px var(--shadow-light);
    border: 1px solid var(--card-border-color);
    overflow: hidden;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.config-category h3 {
    padding: 1.5rem;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    margin: 0;
    transition: background 0.3s ease, color 0.3s ease;
}

.config-items {
    padding: 0;
}

.config-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--card-border-color);
    transition: border-color 0.3s ease;
}

.config-item:last-child {
    border-bottom: none;
}

.config-item code {
    font-weight: 700;
    color: var(--code-highlight-text);
    background: var(--code-highlight-bg);
    border: 1px solid var(--code-highlight-border);
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.config-item span {
    font-size: 0.9rem;
    color: var(--secondary-text-color);
}

/* Comparison Table */
.comparison-table {
    padding: 80px 0;
    background: var(--section-bg-color);
    transition: background 0.3s ease;
}

.table-container {
    background: var(--card-bg-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px var(--shadow-light);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: var(--table-header-bg);
    color: var(--footer-text);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    transition: background 0.3s ease, color 0.3s ease;
}

th:first-child {
    background: var(--table-header-alt-bg);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--table-border-color);
    vertical-align: middle;
    transition: border-color 0.3s ease;
}

tr:nth-child(even) td {
    background: var(--table-alt-row-bg);
    transition: background 0.3s ease;
}

.check {
    color: var(--check-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

.cross {
    color: var(--cross-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

.partial {
    color: var(--partial-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

/* Community Section */
.community {
    padding: 80px 0;
    background: var(--bg-color);
    transition: background 0.3s ease;
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.community-item {
    padding: 2rem;
    background: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: 0 2px 15px var(--shadow-light);
    border: 1px solid var(--card-border-color);
    text-align: center;
    transition: transform 0.2s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.community-item:hover {
    transform: translateY(-2px);
}

.community-item h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.community-item p {
    color: var(--secondary-text-color);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.community-item a {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease, color 0.3s ease;
}

.community-item a:hover {
    border-bottom-color: var(--link-color);
}

/* CTA Footer */
.cta-footer {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--btn-primary-bg) 0%, #004555 100%);
    color: var(--footer-text);
    text-align: center;
    transition: background 0.3s ease, color 0.3s ease;
}

.cta-content h2 {
    color: var(--footer-text);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--footer-link-text);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.cta-footer .btn-primary {
    background: var(--footer-text);
    color: var(--btn-primary-bg);
    border-color: var(--footer-text);
}

.cta-footer .btn-primary:hover {
    background: var(--section-bg-color);
    transform: translateY(-1px);
}

.cta-footer .btn-secondary {
    background: transparent;
    color: var(--footer-text);
    border-color: var(--footer-text);
}

.cta-footer .btn-secondary:hover {
    background: var(--footer-text);
    color: var(--btn-primary-bg);
}

/* Footer */
.footer {
    padding: 40px 0;
    background: var(--footer-bg);
    color: var(--footer-text);
    transition: background 0.3s ease, color 0.3s ease;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--footer-text);
}

.footer-section p {
    color: var(--footer-link-text);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--footer-link-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-section ul li a:hover {
    color: var(--footer-text);
}

/* Theme Switch UI */
.theme-switch-wrapper {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 8px;
    background: var(--card-bg-color);
    border: 1px solid var(--card-border-color);
    border-radius: 8px;
    padding: 8px 12px;
    box-shadow: 0 2px 10px var(--shadow-light);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.theme-button {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: 1px solid var(--btn-primary-border);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    font-family: 'Noto Sans', sans-serif;
}

.theme-button:hover {
    background: var(--btn-primary-hover-bg);
}

.theme-button.active {
    background: var(--link-color);
    color: var(--btn-primary-text);
    border-color: var(--link-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .github-stats {
        justify-content: center;
    }

    .backup-flow {
        flex-direction: column;
        gap: 1rem;
    }

    .arrow {
        transform: rotate(90deg);
    }

    .comparison {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .tab-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .table-container {
        overflow-x: auto;
    }

    table {
        min-width: 600px;
    }

    th,
    td {
        padding: 0.75rem 0.5rem;
        font-size: 0.9rem;
    }

    .theme-switch-wrapper {
        top: 10px;
        right: 10px;
        padding: 6px 10px;
        gap: 6px;
    }

    .theme-button {
        padding: 4px 8px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 60px 0 80px;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .features-grid,
    .config-grid,
    .community-grid {
        grid-template-columns: 1fr;
    }

    .code-example pre {
        padding: 1rem;
    }

    .code-example code {
        font-size: 0.8rem;
    }
}