/* Responsive Design */

/* Mobile First Approach */

/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

/* Desktop (1024px+) */
@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 2);
    }
    
    .strengths-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet (768px+) */
@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
        gap: var(--spacing-unit);
        text-align: center;
    }
    
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-unit);
    }
    
    .lang-switch {
        order: -1;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
    
    .strengths-grid {
        grid-template-columns: 1fr;
    }
    
    .workflow-steps {
        grid-template-columns: 1fr;
    }
    
    .project-metrics {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 0.5);
    }
    
    /* About Me Timeline Responsive */
    .about-item {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 1);
    }
    
    .about-year {
        text-align: left;
        justify-self: start;
        width: auto;
        display: inline-block;
    }
    
    
    .social-link {
        padding: calc(var(--spacing-unit) * 0.6);
    }
}

/* Mobile (480px+) */
@media (max-width: 480px) {
    .container {
        width: 95%;
        padding: var(--spacing-unit) 0;
    }
    
    /* プロフィール背景をモバイルで固定解除 */
    .profile-section {
        background-attachment: scroll;
    }
    
    .main-header .container,
    .main-footer .container {
        padding-top: calc(var(--spacing-unit) * 0.8);
        padding-bottom: calc(var(--spacing-unit) * 0.8);
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: calc(var(--spacing-unit) * 1.5);
    }
    
    .main-nav ul {
        gap: calc(var(--spacing-unit) * 0.5);
    }
    
    .main-nav a {
        padding: calc(var(--spacing-unit) * 0.3);
        font-size: var(--font-size-small);
    }
    
    .logo a {
        font-size: 1.3rem;
    }
    
    /* Typography Adjustments */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.7rem; }
    h3 { font-size: 1.3rem; }
    
    /* Component Adjustments */
    .btn {
        padding: calc(var(--spacing-unit) * 0.7) calc(var(--spacing-unit) * 1.2);
        font-size: var(--font-size-body);
    }
    
    .project-card-content {
        padding: var(--spacing-unit);
    }
    
    .strength-item,
    .workflow-step {
        padding: calc(var(--spacing-unit) * 1.5);
    }
    
    
    
    .tech-tags {
        gap: calc(var(--spacing-unit) * 0.3);
    }
    
    .tech-tag {
        padding: calc(var(--spacing-unit) * 0.2) calc(var(--spacing-unit) * 0.5);
        font-size: 0.8rem;
    }
    
    .skill-item {
        padding: calc(var(--spacing-unit) * 0.4) calc(var(--spacing-unit) * 0.8);
        font-size: var(--font-size-small);
    }
    
    .social-link {
        flex-direction: column;
        text-align: center;
        gap: calc(var(--spacing-unit) * 0.5);
    }
    
    .social-icon {
        min-width: auto;
    }
    
    .step-number {
        width: 35px;
        height: 35px;
        line-height: 35px;
        font-size: 1rem;
    }
}

/* Extra Small Mobile (320px+) */
@media (max-width: 320px) {
    .container {
        width: 100%;
        padding: calc(var(--spacing-unit) * 0.8) calc(var(--spacing-unit) * 0.5);
    }
    
    .hero-title {
        font-size: 1.6rem;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 0.3);
    }
    
    
    .strength-item,
    .workflow-step {
        padding: var(--spacing-unit);
    }
}

/* Print Styles */
@media print {
    .main-header,
    .main-footer,
    .btn,
    .lang-switch {
        display: none;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
    
    .project-card,
    .strength-item,
    .workflow-step {
        break-inside: avoid;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    .project-card,
    .strength-item,
    .workflow-step,
    .contact-form,
    .contact-info {
        border: 1px solid #ccc;
        background-color: white;
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .project-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .project-card:hover,
    .strength-item:hover,
    .social-link:hover {
        transform: none;
    }
}

/* Dark Mode Support (if user prefers dark theme) */
@media (prefers-color-scheme: dark) {
    /* Already using dark theme as default, but could add overrides here if needed */
}

/* Focus Styles for Better Accessibility */
@media (any-hover: none) {
    .btn:hover,
    .project-card:hover,
    .strength-item:hover,
    .social-link:hover {
        transform: none;
    }
    
    .btn:focus,
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        transform: scale(1.02);
        box-shadow: 0 0 0 3px var(--accent-primary);
    }
}