:root {
    --primary-color: #626e4a;
    --accent-color: #d0b35d;
    --text-color: #333;
    --bg-color: #f4f7f6;
    --sidebar-bg: #626e4a;
    --sidebar-text: #ecf0f1;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.05);
    --hover-shadow: 0 10px 15px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
}

.resume-container {
    max-width: 1000px;
    margin: 0 auto;
    background: #fff;
    display: flex;
    flex-wrap: wrap;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.sidebar {
    flex: 1;
    min-width: 280px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 40px 30px;
    text-align: center;
}

.profile-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--sidebar-text);
    margin-bottom: 20px;
    background-color: #fff;
}

.name-section h1 {
    font-size: 24px;
    margin-bottom: 5px;
    letter-spacing: 2px;
    font-weight: 700;
}

.name-section p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 30px;
    font-weight: 300;
}

.sidebar-section {
    text-align: left;
    margin-bottom: 35px;
}

.sidebar-title {
    font-size: 18px;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 5px;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    margin-bottom: 15px;
    font-size: 14px;
    display: flex;
    align-items: center;
}

.contact-list i {
    width: 25px;
    color: var(--accent-color);
    text-align: center;
    margin-right: 10px;
}

.skill-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-list li {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 13px;
    transition: background-color 0.3s;
}

.skill-list li:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.main-content {
    flex: 2;
    min-width: 300px;
    padding: 40px;
    background-color: #fff;
}

.section {
    margin-bottom: 40px;
}

.section-title {
    font-size: 22px;
    color: var(--primary-color);
    border-left: 5px solid var(--accent-color);
    padding-left: 15px;
    margin-bottom: 25px;
    font-weight: 700;
    line-height: 1.2;
}

.timeline-item {
    margin-bottom: 30px;
    padding-left: 25px;
    border-left: 2px solid #eee;
    position: relative;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 6px;
    width: 10px;
    height: 10px;
    background: var(--accent-color);
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px var(--accent-color);
}

.timeline-date {
    font-size: 13px;
    color: #7f8c8d;
    font-weight: 600;
    margin-bottom: 4px;
    display: inline-block;
    background: #f0f2f5;
    padding: 2px 8px;
    border-radius: 4px;
}

.timeline-title {
    font-size: 18px;
    font-weight: bold;
    margin: 5px 0;
    color: var(--primary-color);
}

.timeline-subtitle {
    font-size: 14px;
    color: #555;
    margin-bottom: 10px;
    font-style: italic;
}

.timeline-desc {
    font-size: 15px;
    color: #444;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.portfolio-item {
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s ease;
    background: #fff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
    border-color: transparent;
}

.portfolio-item h4 {
    margin-bottom: 10px;
    color: var(--primary-color);
    font-size: 16px;
}

.portfolio-item p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    flex-grow: 1;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    transition: color 0.2s;
}

.portfolio-link:hover {
    color: #b89c4a;
}

.portfolio-link i {
    margin-left: 5px;
    transition: transform 0.2s;
}

.portfolio-link:hover i {
    transform: translateX(3px);
}

#toast {
    visibility: hidden;
    min-width: 250px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 4px;
    padding: 16px;
    position: fixed;
    z-index: 1;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s;
}

#toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 50px;
}

.experience-columns {
    display: flex;
    gap: 40px;
}

.experience-column {
    flex: 1;
}

.experience-column-title {
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 1px solid #eee;
}

@media (max-width: 768px) {
    .resume-container {
        flex-direction: column;
        margin: 0;
        width: 100%;
        border-radius: 0;
        box-shadow: none;
    }
    body {
        padding: 0;
    }
    .sidebar {
        padding: 40px 20px;
    }
    .main-content {
        padding: 40px 20px;
    }
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    .experience-columns {
        flex-direction: column;
        gap: 30px;
    }
}