/* Shared styles for Jujutsu VCS tutorial site */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    line-height: 1.6;
}

.container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 1200px;
    width: 100%;
    padding: 40px;
    animation: fadeInScale 0.5s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Typography */
h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
}

h2 {
    color: #333;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 24px;
}

h3 {
    color: #667eea;
    margin-top: 20px;
    margin-bottom: 12px;
    font-size: 20px;
}

h4 {
    color: #555;
    margin-top: 15px;
    margin-bottom: 10px;
    font-size: 18px;
}

p {
    color: #555;
    margin-bottom: 15px;
}

.subtitle {
    color: #666;
    margin-bottom: 30px;
    font-size: 14px;
}

/* Links */
a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #764ba2;
}

/* Buttons */
button, .button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
    display: inline-block;
}

button::before, .button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

button:hover::before, .button:hover::before {
    width: 300px;
    height: 300px;
}

button:hover, .button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

button:active, .button:active {
    transform: translateY(0);
}

button.secondary {
    background: #e0e0e0;
    color: #333;
}

button.secondary:hover {
    background: #d0d0d0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Cards */
.card {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
    animation: fadeInUp 0.5s ease-out;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-title {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    margin: 0;
}

.card-description {
    color: #666;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-meta {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: #888;
}

.card-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-meta-item::before {
    content: "•";
    color: #667eea;
    font-weight: 700;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 24px;
    margin-top: 40px;
}

.two-column-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

@media (max-width: 900px) {
    .two-column-grid {
        grid-template-columns: 1fr;
    }
}

/* Code blocks */
code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 14px;
    color: #e91e63;
}

pre {
    background: #f5f5f5;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 15px 0;
    border-left: 4px solid #667eea;
}

pre code {
    background: none;
    padding: 0;
    color: #333;
}

/* Lists */
ul, ol {
    margin: 15px 0 15px 30px;
    color: #555;
}

li {
    margin-bottom: 8px;
}

/* Info boxes */
.info-box {
    background: linear-gradient(135deg, #e8eaf6 0%, #f3e5f5 100%);
    border-left: 4px solid #667eea;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
}

.info-box h3 {
    color: #667eea;
    font-size: 18px;
    margin-top: 0;
    margin-bottom: 12px;
}

.info-box p {
    color: #555;
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

.info-box ul {
    margin: 12px 0 0 20px;
    color: #555;
    font-size: 15px;
    line-height: 1.8;
}

/* Warning/Note boxes */
.warning-box {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-left: 4px solid #ff9800;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
}

.warning-box h3 {
    color: #ff9800;
    margin-top: 0;
}

/* Section styling */
.section {
    margin-top: 40px;
    animation: fadeInUp 0.5s ease-out;
}

.section:first-child {
    margin-top: 0;
}

/* Table of contents */
.toc {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 24px;
    margin: 30px 0;
}

.toc h2 {
    margin-top: 0;
    font-size: 20px;
    color: #667eea;
}

.toc ul {
    margin: 15px 0 0 20px;
}

.toc li {
    margin-bottom: 10px;
}

.toc a {
    color: #555;
    font-weight: 500;
}

.toc a:hover {
    color: #667eea;
}

/* Page header */
.page-header {
    text-align: center;
    margin-bottom: 20px;
}

.page-title {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 12px;
}

.page-subtitle {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    gap: 12px;
}

/* Back link */
.back-link {
    display: inline-block;
    margin-bottom: 20px;
    color: #667eea;
    font-weight: 600;
    text-decoration: none;
}

.back-link:hover {
    color: #764ba2;
}

.back-link::before {
    content: "← ";
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 24px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    .page-title {
        font-size: 28px;
    }

    .card {
        padding: 20px;
    }
}