:root {
    --step-active-bg: #0071e3;
    --sidebar-bg: #f5f5f7;
    --sidebar-width: 280px;
    --content-padding: 60px;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition-smooth: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

body {
    background-color: #fbfbfd;
    color: #1d1d1f;
}

/* Minimal Header */
.join-header-minimal {
    padding: 120px 20px 40px;
    text-align: center;
    background: transparent;
}

.join-header-minimal h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #1d1d1f 0%, #434344 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.join-header-minimal p {
    color: #86868b;
    font-size: 1.25rem;
    font-weight: 400;
}

/* Modern Wizard Container */
.wizard-container-modern {
    display: flex;
    max-width: 1200px;
    margin: 20px auto 80px;
    background: #fff;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    overflow: hidden;
    min-height: 600px;
    border: 1px solid rgba(0,0,0,0.04);
}

/* Sidebar */
.wizard-sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    padding: 60px 40px;
    border-right: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
}

.wizard-progress-vertical {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.progress-step {
    padding-left: 20px;
    position: relative;
    color: #86868b;
    transition: var(--transition-smooth);
    opacity: 0.6;
    cursor: default;
}

.progress-step::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: #d2d2d7;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.progress-step.active, 
.progress-step.completed {
    opacity: 1;
    color: #1d1d1f;
}

.progress-step.active::before {
    background: var(--step-active-bg);
    height: 24px;
    border-radius: 2px;
}

.progress-step.completed::before {
    background: #34c759;
}

.step-label {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.step-sub {
    font-size: 0.85rem;
    color: #86868b;
}

/* Content Area */
.wizard-content-area {
    flex: 1;
    padding: var(--content-padding);
    background: #fff;
    display: flex;
    flex-direction: column;
    position: relative;
}

.step-content {
    display: none;
    animation: fadeIn 0.5s ease;
    flex: 1;
    flex-direction: column;
}

.step-content.active {
    display: flex;
}

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

.content-header {
    margin-bottom: 40px;
}

.content-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.content-header p {
    color: #86868b;
    font-size: 1.1rem;
}

/* Footer & Buttons */
.step-footer {
    margin-top: auto;
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.btn-clean {
    background: none;
    border: none;
    color: #86868b;
    font-size: 1rem;
    cursor: pointer;
    transition: color 0.2s;
    font-weight: 500;
    padding: 10px 20px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-clean:hover {
    color: #1d1d1f;
}

.btn-clean:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-primary-large {
    background: #0071e3;
    color: white;
    border: none;
    padding: 14px 32px;
    border-radius: 980px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary-large:hover {
    background: #0077ed;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.step-action-group {
    display: flex;
    gap: 16px;
    align-items: center;
}

.step-action-group .hidden {
    display: none !important;
}

.step-action-group .final-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Device Cards */
.card-content {
    flex: 1;
}

.device-selection-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.device-card {
    border: 2px solid #f5f5f7;
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    background: #fff;
}

.device-card:hover {
    border-color: #d2d2d7;
    transform: translateY(-2px);
}

.device-card.selected {
    border-color: #0071e3;
    background: rgba(0, 113, 227, 0.03);
}

.icon-circle {
    width: 60px;
    height: 60px;
    background: #f5f5f7;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 16px;
    color: #1d1d1f;
    transition: var(--transition-smooth);
}

.device-card.selected .icon-circle {
    background: #0071e3;
    color: white;
}

.check-mark {
    position: absolute;
    top: 16px;
    right: 16px;
    color: #0071e3;
    opacity: 0;
    transform: scale(0.5);
    transition: var(--transition-smooth);
}

.device-card.selected .check-mark {
    opacity: 1;
    transform: scale(1);
    font-size: 1.2rem;
}

.device-info h3 {
    margin: 0 0 4px;
    font-size: 1.1rem;
}
.device-info p {
    margin: 0;
    font-size: 0.9rem;
    color: #86868b;
}

/* Playstyle Cards */
.playstyle-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.playstyle-card {
    display: flex;
    align-items: center;
    padding: 24px;
    border-radius: 16px;
    background: #f5f5f7;
    gap: 20px;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.playstyle-card:hover {
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); /* Fixed shadow var */
    transform: translateY(-2px);
}

.playstyle-visual {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #1d1d1f;
    flex-shrink: 0;
}

/* Convention */
.convention-wrapper {
    background: #f5f5f7;
    border-radius: 12px;
    padding: 6px;
    margin-bottom: 24px;
}

.markdown-content {
    background: #fff;
    border-radius: 8px;
    padding: 30px;
    height: 400px;
    overflow-y: auto;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #333;
}

/* Custom Checkbox */
.agreement-area {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.2s;
}

.agreement-area:hover {
    background: #f5f5f7;
}

.custom-checkbox {
    position: relative;
    width: 24px;
    height: 24px;
    border: 2px solid #d2d2d7;
    border-radius: 6px;
    display: flex; /* Flex to center content */
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    background: #fff;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkmark {
    display: none;
    color: white;
    font-size: 14px;
}

/* When the checkbox input inside is checked */
.custom-checkbox:has(input:checked) {
    background-color: #0071e3;
    border-color: #0071e3;
}

.custom-checkbox:has(input:checked) .checkmark {
    display: block;
}

/* Launcher Recommendation */
.launcher-box {
    margin-top: 30px;
    padding: 24px;
    background: #f0f9ff;
    border-radius: 16px;
    border: 1px solid #bae6fd;
}

.hidden {
    display: none;
}

/* Final Message */
.final-message {
    text-align: center;
    margin-top: 30px;
    color: #86868b;
    font-style: italic;
}

@media (max-width: 800px) {
    .join-header-minimal {
        padding: 80px 20px 20px;
    }
    
    .join-header-minimal h1 {
        font-size: 2rem;
    }

    .wizard-container-modern {
        flex-direction: column;
        margin: 0 10px 40px;
        min-height: auto;
        border-radius: 16px;
    }
    .wizard-sidebar {
        width: 100%;
        padding: 16px;
        flex-direction: row;
        overflow-x: auto;
        border-right: none;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        gap: 0;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* Firefox */
    }
    .wizard-sidebar::-webkit-scrollbar {
        display: none; /* Chrome/Safari */
    }
    
    .wizard-progress-vertical {
        flex-direction: row;
        width: auto;
        gap: 24px;
        flex-wrap: nowrap;
        padding-right: 20px; /* End padding for scroll */
    }
    .progress-step {
        padding-left: 0; 
        white-space: nowrap;
        opacity: 0.5;
        flex-shrink: 0;
    }
    .progress-step.active {
        opacity: 1;
        color: #0071e3;
    }
    .progress-step::before {
        display: none;
    }
    .step-sub { display: none; }
    
    .wizard-content-area {
        padding: 24px 20px;
    }
    
    .device-selection-grid, .playstyle-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .step-footer {
        flex-direction: column-reverse;
        gap: 16px;
        padding-top: 30px;
    }
    
    .btn-clean {
        width: 100%;
        justify-content: center;
        padding: 12px;
    }
    
    .step-action-group {
        width: 100%;
        flex-direction: column;
        gap: 12px;
    }
    
    .step-action-group .final-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .btn-primary-large {
        width: 100%;
        justify-content: center;
        padding: 16px;
    }

    /* Adjust specific card layouts for mobile */
    .device-card {
        padding: 24px 16px;
        display: flex;
        align-items: center;
        text-align: left;
        gap: 20px;
    }
    
    .icon-circle {
        margin: 0; /* Reset auto margin */
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .device-info {
        flex: 1;
    }
    
    .check-mark {
        position: static;
        transform: scale(0.8);
        opacity: 0;
        width: 24px;
    }
    
    .device-card.selected .check-mark {
        opacity: 1;
        transform: scale(1);
    }

    /* Launcher cards */
    .launcher-grid {
        grid-template-columns: 1fr;
    }
    
    .launcher-card {
        padding: 16px;
    }
    
    .launcher-icon {
        width: 44px;
        height: 44px;
        font-size: 20px;
        margin-right: 16px;
    }
    
    /* Playstyle cards adjustment */
    .playstyle-card {
        padding: 16px;
    }
    
    .playstyle-visual {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    /* Modal/Details tweaks */
    .detail-grid-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .details-card {
        padding: 20px;
    }
    
    .details-header h3 {
        font-size: 1.25rem;
    }

    /* Tutorial Step tweaks */
    .tutorial-step {
        padding: 16px;
        gap: 12px;
    }
    .step-badge {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }

    /* Server address box responsiveness */
    .server-address-box {
        width: 100%;
        box-sizing: border-box;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .server-address-box code {
        word-break: break-all;
    }
    
    .btn-copy {
        width: 100%;
        justify-content: center;
    }
}

.step-dot { display: none; }

/* Tutorial Steps */
.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tutorial-step {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: #f5f5f7;
    border-radius: 12px;
    align-items: flex-start;
}

.step-badge {
    width: 32px;
    height: 32px;
    background: #0071e3;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.step-text h4 {
    margin: 0 0 4px;
    font-size: 1.1rem;
    color: #1d1d1f;
}

.step-text p {
    margin: 0;
    color: #86868b;
    font-size: 0.95rem;
    line-height: 1.5;
}

.step-text code {
    background: #e8e8ed;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: #1d1d1f;
}

/* Enhanced Device Selection Styles */
.launcher-box {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(0,0,0,0.05);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.recommendation-header {
    text-align: center;
    margin-bottom: 30px;
}

.recommendation-header h3 {
    font-size: 1.4rem;
    color: #1d1d1f;
    margin-bottom: 8px;
}

.recommendation-header p {
    color: #86868b;
    font-size: 1rem;
}

.launcher-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.launcher-card {
    display: flex;
    align-items: center;
    padding: 24px;
    background: #fbfbfd;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 16px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.launcher-card:hover {
    background: #fff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    transform: translateY(-2px);
    border-color: rgba(0,0,0,0.08); 
}

.launcher-card.primary {
    background: #fff;
    border: 1px solid rgba(0, 113, 227, 0.2);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.05);
}

.launcher-card.primary:hover {
    box-shadow: 0 8px 24px rgba(0, 113, 227, 0.12);
    border-color: rgba(0, 113, 227, 0.4);
}

.launcher-icon {
    width: 54px;
    height: 54px;
    background: #ffffff;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #1d1d1f;
    margin-right: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    flex-shrink: 0;
}

.launcher-card.primary .launcher-icon {
    background: #0071e3;
    color: white;
}

.launcher-details {
    flex: 1;
}

.launcher-details h4 {
    margin: 0 0 4px;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-rec {
    font-size: 0.75rem;
    background: #e1f0ff;
    color: #0071e3;
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 500;
}

.launcher-details p {
    margin: 0;
    font-size: 0.9rem;
    color: #86868b;
    line-height: 1.4;
}

.launcher-action {
    color: #0071e3;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.launcher-card:hover .launcher-action {
    opacity: 1;
    transform: translateX(0);
}

/* Server Address Box */
.server-address-box {
    background: #e8e8ed;
    padding: 8px 12px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin: 8px 0;
    font-family: monospace;
    color: #1d1d1f;
    border: 1px solid rgba(0,0,0,0.05);
}

.server-address-box code {
    background: none;
    padding: 0;
    font-size: 1rem;
    font-weight: 600;
}

.btn-copy {
    background: #fff;
    border: 1px solid #d2d2d7;
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    color: #1d1d1f;
    display: flex;
    align-items: center;
    gap: 4px;
}

.btn-copy:hover {
    background: #f5f5f7;
    border-color: #86868b;
}

.btn-copy:active {
    transform: scale(0.95);
}

.highlight-text {
    color: #0071e3;
    font-weight: 600;
}

/* --- Added for Step 4 Interactive Enhancement --- */

/* Interactive Playstyle Cards */
.playstyle-card {
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 2px solid transparent; /* Prepare for border change */
    /* Ensure existing styles don't conflict, but we assume they are basic cards */
}

.playstyle-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.playstyle-card.selected {
    border-color: #0071e3;
    background-color: rgba(0, 113, 227, 0.04);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.2);
}

.icon-check-wrapper {
    position: absolute;
    top: 10px;
    right: 10px;
    color: #0071e3;
    opacity: 0;
    transform: scale(0.5);
    transition: var(--transition-smooth);
}

.playstyle-card.selected .icon-check-wrapper {
    opacity: 1;
    transform: scale(1);
}

/* Details Section */
.playstyle-details-container {
    margin-top: 40px;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.playstyle-details-container.visible {
    opacity: 1;
    max-height: 1000px; /* Arbitrary large height */
    margin-bottom: 20px;
}

.details-card {
    background: #fbfbfd;
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.02);
}

.details-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.details-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: #1d1d1f;
}

.badge-subtitle {
    background: #e8e8ed;
    color: #6e6e73;
    padding: 4px 12px;
    border-radius: 980px;
    font-size: 0.85rem;
    font-weight: 500;
}

.details-body {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.detail-section h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
    color: #1d1d1f;
    display: flex;
    align-items: center;
    gap: 8px;
}

.detail-section h4 i {
    color: #0071e3;
}

.detail-section p {
    margin: 0;
    color: #424245;
    line-height: 1.6;
}

.detail-grid-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    .detail-grid-row {
        grid-template-columns: 1fr;
    }
}

.detail-section ul {
    margin: 0;
    padding-left: 0;
    list-style: none;
}

.detail-section ul li {
    padding-left: 24px;
    position: relative;
    margin-bottom: 8px;
    color: #424245;
    line-height: 1.5;
}

.detail-section ul li::before {
    content: "•";
    position: absolute;
    left: 8px;
    color: #86868b;
}

.detail-section.check-list ul li::before {
    content: "✓";
    color: #34c759; /* Green */
    font-weight: bold;
}

.detail-section.warn-list ul li::before {
    content: "!";
    color: #ff9f0a; /* Orange */
    font-weight: bold;
    left: 8px; /* Adjust if needed */
}

/* --- Added for Step 4 Interactive Enhancement - Fix --- */

/* Details Section */
.playstyle-details-container {
    margin-top: 0;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.playstyle-details-container.visible {
    opacity: 1;
    max-height: 1000px;
    margin-top: 40px;
    margin-bottom: 20px;
}

/* Edition Selector */
.edition-selector {
    margin-top: 24px;
    text-align: center;
}

.edition-toggle {
    display: inline-flex;
    background: #f5f5f7;
    border-radius: 12px;
    padding: 4px;
    gap: 4px;
}

.edition-btn {
    padding: 10px 28px;
    border: none;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: #86868b;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.edition-btn.active {
    background: #fff;
    color: #1d1d1f;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.edition-btn:hover:not(.active) {
    color: #1d1d1f;
}

.server-address-box span {
    color: #86868b;
    font-size: 0.9rem;
    white-space: nowrap;
}