/* Component Styles */

.btn {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 0.8) calc(var(--spacing-unit) * 1.5);
    background-color: var(--accent-primary);
    color: var(--primary-bg);
    border-radius: 5px;
    font-weight: 700;
    text-align: center;
    transition: transform var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.btn:hover {
    background-color: var(--hover-color);
    transform: scale(1.05);
    color: var(--primary-bg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
}

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

.profile-detail-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: calc(var(--spacing-unit) * 0.6) calc(var(--spacing-unit) * 1.2);
    background-color: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed) ease;
}

.profile-detail-btn:hover {
    background-color: var(--accent-primary);
    color: var(--primary-bg);
    transform: translateY(-2px);
}

.profile-summary {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.project-grid {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.project-card {
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
}

.project-image {
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-card-content {
    padding: calc(var(--spacing-unit) * 1.5);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-card-content h3 {
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing-unit) * 1);
    font-size: var(--font-size-h3);
    font-weight: 700;
    line-height: 1.3;
}

.project-category {
    display: inline-block;
    background-color: var(--accent-primary);
    color: var(--primary-bg);
    padding: calc(var(--spacing-unit) * 0.3) calc(var(--spacing-unit) * 0.8);
    border-radius: 15px;
    font-size: var(--font-size-small);
    font-weight: 700;
    margin-bottom: var(--spacing-unit);
    align-self: flex-start;
}

.project-description {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    line-height: 1.6;
    flex: 1;
}

.project-tech {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: calc(var(--spacing-unit) * 0.5);
    margin-top: calc(var(--spacing-unit) * 0.5);
}

.tech-tag {
    background-color: var(--primary-bg);
    color: var(--text-secondary);
    padding: calc(var(--spacing-unit) * 0.3) calc(var(--spacing-unit) * 0.7);
    border-radius: 4px;
    font-size: var(--font-size-small);
    border: 1px solid var(--border-color);
}

.project-metrics {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    flex-wrap: wrap;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 0.2);
}

.metric-label {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
}

.metric-value {
    font-weight: 700;
    color: var(--accent-primary);
}

.project-outcome {
    background-color: var(--primary-bg);
    padding: var(--spacing-unit);
    border-radius: 6px;
    border-left: 4px solid var(--accent-primary);
    margin-top: auto;
}

/* Detailed Project Card Styles */
.project-card-detailed {
    grid-column: span 2;
    max-width: none;
}

.project-features {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    padding: calc(var(--spacing-unit) * 1.5);
    background-color: var(--primary-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-features strong {
    display: block;
    margin-bottom: var(--spacing-unit);
    color: var(--accent-primary);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 1.2);
}

.feature-item {
    background-color: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 1.2);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
    position: relative;
}

.feature-item::before {
    content: "●";
    position: absolute;
    top: calc(var(--spacing-unit) * 0.8);
    left: calc(var(--spacing-unit) * 0.8);
    color: var(--accent-primary);
    font-size: 0.8rem;
}

.feature-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

.feature-item h4 {
    margin: 0 0 calc(var(--spacing-unit) * 0.5) calc(var(--spacing-unit) * 1.2);
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.feature-item p {
    margin: 0 0 0 calc(var(--spacing-unit) * 1.2);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    line-height: 1.5;
}

.project-links {
    margin-top: calc(var(--spacing-unit) * 1.5);
    padding-top: calc(var(--spacing-unit) * 1.5);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.project-github-btn {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.5);
    font-size: var(--font-size-small);
    padding: calc(var(--spacing-unit) * 0.8) calc(var(--spacing-unit) * 1.5);
    text-decoration: none;
    transition: all var(--transition-speed) ease;
}

.project-github-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

.github-icon {
    font-size: 1.2rem;
    display: inline-block;
    transition: transform var(--transition-speed) ease;
}

.project-github-btn:hover .github-icon {
    transform: rotate(10deg);
}

/* Process Flow Visualization */
.project-process {
    margin: calc(var(--spacing-unit) * 1.5) 0;
    padding: calc(var(--spacing-unit) * 1.5);
    background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-process strong {
    display: block;
    margin-bottom: var(--spacing-unit);
    color: var(--accent-primary);
    font-size: 1.1rem;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    margin: calc(var(--spacing-unit) * 1.5) 0;
    gap: calc(var(--spacing-unit) * 1);
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 30px;
    right: 30px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    z-index: 1;
}

.process-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    text-align: center;
}

.process-step {
    background-color: var(--secondary-bg);
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--accent-primary);
    position: relative;
    z-index: 10;
    transition: all var(--transition-speed) ease;
    margin-bottom: calc(var(--spacing-unit) * 0.8);
}

.process-step:hover {
    transform: scale(1.1);
    background-color: var(--accent-primary);
    color: var(--primary-bg);
}

.process-info {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 0.3);
}

.process-phase {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1rem;
}

.process-period {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: var(--font-size-small);
}

.process-description {
    color: var(--text-secondary);
    font-size: var(--font-size-small);
    line-height: 1.4;
    max-width: 150px;
}

/* Responsive adjustments for detailed cards */
@media (max-width: 768px) {
    .project-card-detailed {
        grid-column: span 1;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 1.5);
        align-items: center;
    }
    
    .process-steps::before {
        width: 2px;
        height: calc(100% - 60px);
        top: 30px;
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    }
    
    .process-item {
        width: 100%;
        max-width: 300px;
    }
    
    .process-description {
        max-width: 250px;
    }
}

.skill-category {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-unit);
}

.skill-item {
    background-color: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 0.5) var(--spacing-unit);
    border-radius: 5px;
    border: 1px solid var(--border-color);
}

.strengths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.strength-item {
    background: rgba(45, 45, 45, 0.9);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    backdrop-filter: blur(10px);
}

.strength-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.strength-item h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-unit);
}

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.workflow-step {
    background: rgba(45, 45, 45, 0.9);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
}

.step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: var(--accent-primary);
    color: var(--primary-bg);
    border-radius: 50%;
    line-height: 40px;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-unit);
}

.workflow-step h3 {
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.cta-section {
    background-color: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: 8px;
    text-align: center;
    margin-top: calc(var(--spacing-unit) * 3);
}

.cta-section h2 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-unit);
}

.profile-content {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.profile-text p {
    margin-bottom: var(--spacing-unit);
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Skills Section Styles */
#skills {
    margin: calc(var(--spacing-unit) * 4) 0;
    padding: calc(var(--spacing-unit) * 2) 0;
    border-top: 1px solid var(--border-color);
}

#skills h3 {
    color: var(--accent-primary);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: var(--font-size-h3);
    text-align: center;
}

/* About Me Section Styles */
#about-me {
    margin: calc(var(--spacing-unit) * 4) 0;
    padding: calc(var(--spacing-unit) * 2) 0;
    border-top: 1px solid var(--border-color);
}

#about-me h3 {
    color: var(--accent-primary);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: var(--font-size-h3);
    text-align: center;
}

#strengths {
    margin: calc(var(--spacing-unit) * 4) 0;
    padding: calc(var(--spacing-unit) * 2) 0;
    border-top: 1px solid var(--border-color);
}

#strengths h3 {
    color: var(--accent-primary);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: var(--font-size-h3);
    text-align: center;
}

#ai-workflow {
    margin: calc(var(--spacing-unit) * 4) 0;
    padding: calc(var(--spacing-unit) * 2) 0;
    border-top: 1px solid var(--border-color);
}

#ai-workflow h3 {
    color: var(--accent-primary);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: var(--font-size-h3);
    text-align: center;
}

/* Modern Contact Section Styles */
.contact-section {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 50%, var(--primary-bg) 100%);
    padding: calc(var(--spacing-unit) * 6) 0;
    min-height: 600px;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 102, 204, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.contact-section .container {
    position: relative;
    z-index: 2;
}

.contact-intro {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    background: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
}

.contact-intro::before {
    content: '💬';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-primary);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2.5);
    max-width: 700px;
    margin: 0 auto;
}

.contact-form-wrapper {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    visibility: visible;
    opacity: 1;
    margin: 0 auto;
}

.contact-form {
    background: var(--secondary-bg) !important;
    border-radius: 20px;
    padding: calc(var(--spacing-unit) * 3);
    border: 2px solid var(--accent-primary);
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(0, 212, 170, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.05) 0%, rgba(0, 102, 204, 0.05) 100%);
    border-radius: 20px;
    pointer-events: none;
    z-index: -1;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.form-group {
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.form-group:last-of-type {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: calc(var(--spacing-unit) * 0.8);
    background: var(--primary-bg) !important;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary) !important;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 212, 170, 0.1);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 4 5"><path fill="%23b8c5d6" d="m0 1 2 2 2-2z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

.contact-btn {
    width: 100%;
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 1.5);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--hover-color) 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 212, 170, 0.2);
}

.contact-btn:active {
    transform: translateY(-1px);
}

.contact-info {
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    margin: 0 auto;
}

.contact-card {
    background: var(--secondary-bg);
    border-radius: 20px;
    padding: calc(var(--spacing-unit) * 2);
    border: 2px solid var(--accent-primary);
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(0, 212, 170, 0.1);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.03) 0%, rgba(0, 102, 204, 0.03) 100%);
    pointer-events: none;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    padding: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 0.8);
    background: var(--primary-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-1px);
    border-color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(0, 212, 170, 0.1);
}

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

.contact-icon {
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--hover-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-details h4 {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 0.2);
}

.contact-email,
.contact-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-email:hover,
.contact-link:hover {
    color: var(--hover-color);
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 1.5);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 0.8);
        margin-bottom: calc(var(--spacing-unit) * 0.8);
    }
    
    .contact-form,
    .contact-card {
        padding: calc(var(--spacing-unit) * 1.2);
    }
    
    .contact-item {
        padding: calc(var(--spacing-unit) * 0.8);
        margin-bottom: calc(var(--spacing-unit) * 0.6);
    }
    
    .contact-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}

/* Section Header Styles */
.section-header {
    font-size: var(--font-size-h2) !important;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--text-primary) !important;
    position: relative;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    font-weight: 700;
    z-index: 10;
}

.section-header::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--hover-color));
    margin: calc(var(--spacing-unit) * 1) auto 0;
    border-radius: 2px;
}

/* Profile Introduction Section Styles */
.profile-intro-bg {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 50%, var(--primary-bg) 100%);
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-unit) * 4) 0;
}

/* Background Slideshow Styles */
.background-slideshow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.background-slideshow .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.background-slideshow .slide.active {
    opacity: 0.7;
}

.background-slideshow .slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg, 
        rgba(26, 26, 26, 0.4) 0%, 
        rgba(26, 26, 26, 0.2) 30%,
        rgba(26, 26, 26, 0.1) 50%,
        rgba(26, 26, 26, 0.2) 70%,
        rgba(26, 26, 26, 0.4) 100%
    );
    z-index: 1;
}

/* スライドショー制御は自動のみ - 手動制御なし */

.profile-intro-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(0, 212, 170, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 2;
}

.profile-intro-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: calc(var(--spacing-unit) * 4);
    align-items: start;
    position: relative;
    z-index: 3;
}

.profile-image-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
}

.profile-image-placeholder {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    border: 2px solid rgba(128, 128, 128, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: rgba(45, 45, 45, 0.9);
    position: relative;
    box-shadow: 0 10px 30px rgba(128, 128, 128, 0.2);
    backdrop-filter: blur(10px);
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
    opacity: 1;
}

.profile-photo:not([src]),
.profile-photo[src=""],
.profile-photo:not([src*=".jpg"]):not([src*=".png"]):not([src*=".webp"]) {
    display: none;
}

.profile-image-placeholder:empty::before,
.profile-image-placeholder:has(.profile-photo[style*="display: none"])::before {
    content: "👤";
    font-size: 4rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-status {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.5);
    background: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 0.5) calc(var(--spacing-unit) * 1);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-text {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    font-weight: 600;
}

.profile-intro-text {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.profile-name {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.profile-title {
    font-size: 1.3rem;
    color: #ff6b35 !important;
    margin: 0;
    font-weight: 600;
}

.profile-highlights {
    display: flex;
    gap: calc(var(--spacing-unit) * 1.5);
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.5);
    background: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 0.7) calc(var(--spacing-unit) * 1);
    border-radius: 25px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) ease;
}

.highlight-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.highlight-icon {
    font-size: 1.1rem;
}

.highlight-text {
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--text-primary);
}

.profile-personal-info {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
    background: rgba(45, 45, 45, 0.9);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.personal-section h3 {
    color: var(--accent-primary);
    margin-bottom: calc(var(--spacing-unit) * 1);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.5);
}

.interest-tags {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: calc(var(--spacing-unit) * 0.8);
    justify-items: start;
}

.interest-tag {
    background: var(--primary-bg);
    color: var(--text-primary);
    padding: calc(var(--spacing-unit) * 0.6) calc(var(--spacing-unit) * 1);
    border-radius: 25px;
    font-size: var(--font-size-small);
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) ease;
    width: 100%;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    cursor: pointer;
}

.interest-tag:hover {
    background: var(--accent-primary);
    color: var(--primary-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

/* おしゃれなツールチップ機能 */
.interest-tag.has-article {
    position: relative;
    overflow: visible;
}

/* メインのツールチップバブル */
.interest-tag.has-article::after {
    content: "！";
    position: absolute;
    top: -10px;
    right: -10px;
    transform: scale(0) rotate(45deg);
    background: linear-gradient(135deg, #00d4aa, #00b894);
    color: white;
    padding: calc(var(--spacing-unit) * 0.6) calc(var(--spacing-unit) * 0.8);
    border-radius: 50%;
    font-size: 1.2rem;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 8px 25px rgba(0, 212, 170, 0.4), 0 0 0 3px rgba(255, 255, 255, 0.1);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 9999;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 矢印は使用しない - シンプルなデザインに統一 */

/* 感嘆符アニメーション用の擬似要素（JavaScriptで制御） */
.interest-tag.has-article {
    /* animation: pulse-article 2s infinite; - JavaScriptで制御 */
}

@keyframes pulse-article {
    0%, 70%, 100% {
        box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
    }
    35% {
        box-shadow: 0 4px 20px rgba(0, 212, 170, 0.6), 0 0 0 4px rgba(0, 212, 170, 0.2);
    }
}

/* ホバー時の表示アニメーション */
.interest-tag.has-article:hover::after {
    opacity: 1;
    transform: scale(1) rotate(45deg);
    animation: bounce-in 0.6s ease;
}

@keyframes bounce-in {
    0% {
        transform: scale(0) rotate(35deg);
    }
    50% {
        transform: scale(1.1) rotate(50deg);
    }
    100% {
        transform: scale(1) rotate(45deg);
    }
}

/* 英語版用ツールチップ */
.interest-tag.has-article.en::after {
    content: "!";
}

/* ホバー時にパルスアニメーションを停止 */
.interest-tag.has-article:hover {
    animation: none;
    box-shadow: 0 6px 20px rgba(0, 212, 170, 0.4);
    transform: translateY(-3px) scale(1.05);
}

/* 旧スタイルを削除 - すべてのタグでゲーム式ツールチップに統一 */

/* 技術スキルボタンのリセット済みスタイル */
.skill-item {
    background-color: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 0.8) calc(var(--spacing-unit) * 1.2);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    color: var(--text-primary);
}

.skill-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    background-color: rgba(0, 212, 170, 0.1);
    box-shadow: 0 4px 12px rgba(0, 212, 170, 0.2);
    color: var(--accent-primary);
}


/* 記事ページスタイル */
.article-section {
    padding: calc(var(--spacing-unit) * 4) 0;
    min-height: 80vh;
}

.article-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.back-link {
    display: inline-block;
    color: var(--accent-primary);
    text-decoration: none;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-size: var(--font-size-small);
    transition: color var(--transition-speed) ease;
}

.back-link:hover {
    color: var(--hover-color);
}

.article-title {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
    font-weight: 700;
}

.article-subtitle {
    font-size: var(--font-size-large);
    color: var(--text-secondary);
    font-weight: 400;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.article-intro {
    background: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    margin-bottom: calc(var(--spacing-unit) * 3);
    border-left: 4px solid var(--accent-primary);
}

.article-intro p {
    font-size: var(--font-size-large);
    color: var(--text-primary);
    margin: 0;
    font-weight: 500;
}

.content-section {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.content-section h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-weight: 700;
    border-bottom: 2px solid var(--accent-primary);
    padding-bottom: calc(var(--spacing-unit) * 0.5);
}

.content-section p {
    color: var(--text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.content-section blockquote {
    background: var(--accent-primary);
    color: var(--primary-bg);
    padding: calc(var(--spacing-unit) * 1.5);
    border-radius: 8px;
    margin: calc(var(--spacing-unit) * 2) 0;
    font-style: italic;
    position: relative;
}

.content-section blockquote::before {
    content: '"';
    font-size: 3rem;
    position: absolute;
    top: -10px;
    left: 15px;
    opacity: 0.5;
}

.game-list {
    display: grid;
    gap: calc(var(--spacing-unit) * 2);
    margin-top: calc(var(--spacing-unit) * 2);
}

.game-item {
    background: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 1.5);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.game-item h3 {
    color: var(--accent-primary);
    margin-bottom: calc(var(--spacing-unit) * 1);
    font-size: 1.2rem;
    font-weight: 600;
}

.article-list {
    list-style: none;
    padding: 0;
}

.article-list li {
    margin-bottom: calc(var(--spacing-unit) * 1);
    padding-left: calc(var(--spacing-unit) * 1.5);
    position: relative;
    color: var(--text-secondary);
}

.article-list li::before {
    content: '→';
    color: var(--accent-primary);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.article-list li strong {
    color: var(--text-primary);
}

.article-cta {
    background: var(--secondary-bg);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    text-align: center;
    margin-top: calc(var(--spacing-unit) * 4);
    border: 2px solid var(--accent-primary);
}

.article-cta p {
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-weight: 500;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .article-title {
        font-size: 2rem;
    }
    
    .article-content {
        padding: 0 calc(var(--spacing-unit) * 1);
    }
    
    .game-list {
        gap: calc(var(--spacing-unit) * 1);
    }
}

/* モバイル対応 */
@media (max-width: 768px) {
    .interest-tags {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .interest-tag {
        font-size: 0.8rem;
        padding: calc(var(--spacing-unit) * 0.5) calc(var(--spacing-unit) * 0.8);
    }
}

/* 好きな場所のCSSは削除済み */

.additional-info .info-text {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.profile-cta-btn {
    align-self: flex-start;
    display: inline-block;
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2.5);
    background: linear-gradient(135deg, var(--accent-primary), var(--hover-color));
    color: var(--primary-bg);
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed) ease;
    border: none;
    font-size: 1.1rem;
}

.profile-cta-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 212, 170, 0.3);
    color: var(--primary-bg);
}

/* Responsive Design for Profile Section */
@media (max-width: 768px) {
    .profile-intro-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 2);
        text-align: center;
    }
    
    .profile-image-placeholder {
        width: 150px;
        height: 150px;
    }
    
    .profile-name {
        font-size: 2rem;
    }
    
    .profile-highlights {
        justify-content: center;
    }
}