/* ═══════════════════════════════════════════════════════════
   Pi Network 회원가입 페이지 전용 스타일
   ═══════════════════════════════════════════════════════════ */

.pi-signup-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #E8EAF6 0%, #C5CAE9 100%);
}

/* Pi Global Status */
.pi-global-status {
    background: linear-gradient(135deg, #1A237E 0%, #283593 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    color: var(--bg-white);
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.status-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.status-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.status-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-gold);
    margin-bottom: var(--spacing-xs);
    font-family: 'Courier New', monospace;
}

.status-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.data-source {
    text-align: center;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.coinmarketcap-link {
    color: var(--primary-gold);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.coinmarketcap-link:hover {
    color: #FFF;
    text-decoration: underline;
}

.coinmarketcap-link i {
    font-size: 0.65rem;
    margin-left: 0.25rem;
}

/* Pi Chakra Section */
.pi-chakra-section {
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, #C5CAE9 0%, #9FA8DA 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.chakra-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.chakra-video {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px var(--shadow);
}

.video-thumbnail-info {
    background: linear-gradient(135deg, #3949AB 0%, #5C6BC0 100%);
    padding: var(--spacing-xl) var(--spacing-md);
    border-radius: var(--radius-sm);
    text-align: center;
    color: var(--bg-white);
}

.chakra-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.chakra-title {
    font-weight: 700;
    font-size: 1.25rem;
    margin: var(--spacing-sm) 0;
}

.chakra-desc {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.video-link-box {
    margin-top: var(--spacing-md);
    text-align: center;
}

.evidence-video-link {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.125rem;
    border: 2px solid #FFD700;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.3);
}

.evidence-video-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.5);
    background: linear-gradient(135deg, #CC0000 0%, #990000 100%);
}

.evidence-video-link i {
    margin-right: 0.5rem;
    font-size: 1.25rem;
}

.video-description {
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: #1A237E;
    font-weight: 600;
}

.video-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.video-link-thumbnail {
    display: block;
    text-decoration: none;
    color: inherit;
}

.youtube-link {
    padding: var(--spacing-sm);
    background: #FF0000;
    color: var(--bg-white);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.youtube-link:hover {
    background: #CC0000;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(255, 0, 0, 0.3);
}

.youtube-link.primary-video {
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    font-size: 1.05rem;
    padding: var(--spacing-md);
    border: 2px solid #FFD700;
}

.chakra-explanation {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.discovery-box {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 10px var(--shadow);
}

.discovery-box.highlight {
    background: linear-gradient(135deg, #FFF9C4 0%, #FFF59D 100%);
    border: 3px solid var(--primary-gold);
}

.discovery-box h4 {
    color: #1A237E;
    margin-bottom: var(--spacing-sm);
}

.discovery-box ul {
    list-style: none;
    padding: 0;
}

.discovery-box li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.math-proof {
    margin-top: var(--spacing-sm);
}

.formula {
    background: #263238;
    color: #4CAF50;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    line-height: 1.8;
    overflow-x: auto;
}

.interpretation {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.5);
    border-left: 4px solid var(--primary-gold);
    border-radius: var(--radius-sm);
}

.researcher-quote {
    background: rgba(123, 45, 133, 0.1);
    border-left: 4px solid var(--primary-purple);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    border-radius: var(--radius-sm);
}

.researcher-quote footer {
    text-align: right;
    margin-top: var(--spacing-sm);
    font-weight: 600;
    color: var(--primary-purple);
}

.ilman-interpretation {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
}

.ilman-interpretation ul {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-sm);
}

/* Comparison Table */
.comparison-table {
    margin-top: var(--spacing-lg);
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.comparison-table h3 {
    color: #1A237E;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.comparison {
    width: 100%;
    border-collapse: collapse;
}

.comparison thead {
    background: var(--gradient-gold);
    color: var(--bg-white);
}

.comparison th,
.comparison td {
    padding: var(--spacing-sm);
    text-align: left;
    border: 1px solid var(--border-light);
}

.comparison tbody tr:nth-child(even) {
    background: var(--bg-cream);
}

.comparison tbody tr:hover {
    background: #FFE6CC;
}

.comparison td:last-child {
    text-align: center;
    font-weight: 700;
}

/* Responsive for Chakra Section */
@media (max-width: 1024px) {
    .chakra-content {
        grid-template-columns: 1fr;
    }
}

/* Pi Hero */
.pi-hero {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #1A237E 0%, #3949AB 100%);
    border-radius: var(--radius-lg);
    color: var(--bg-white);
}

/* Global BigTech Notice */
.global-bigtech-notice {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 215, 0, 0.5);
}

.bigtech-message {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--bg-white);
    margin: 0;
    text-align: center;
}

.icon-glow {
    font-size: 1.3rem;
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        text-shadow: 0 0 5px #FFD700, 0 0 10px #FFD700;
    }
    50% {
        text-shadow: 0 0 10px #FFD700, 0 0 20px #FFD700, 0 0 30px #FFD700;
    }
}

.pi-icon-large {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    animation: coinSpin 3s ease-in-out infinite;
}

@keyframes coinSpin {
    0%, 100% { transform: rotateY(0deg); }
    50% { transform: rotateY(180deg); }
}

.pi-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.pi-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Benefits Section */
.benefits-section {
    margin-bottom: var(--spacing-xl);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.benefit-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 4px 15px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.benefit-card h3 {
    font-size: 1.25rem;
    color: #1A237E;
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    color: var(--text-gray);
}

/* Installation Guide */
.installation-guide {
    margin-bottom: var(--spacing-xl);
}

.step-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.step-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 15px var(--shadow);
    display: flex;
    gap: var(--spacing-md);
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--gradient-gold);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(212, 175, 55, 0.4);
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    color: #1A237E;
    margin-bottom: var(--spacing-sm);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.download-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.ios-btn {
    background: linear-gradient(135deg, #000000 0%, #434343 100%);
    color: var(--bg-white);
}

.android-btn {
    background: linear-gradient(135deg, #3DDC84 0%, #34C471 100%);
    color: var(--bg-white);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

/* Invite Code Box */
.invite-code-box {
    background: #FFF9E6;
    border: 3px solid var(--primary-gold);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.invite-label {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: var(--spacing-xs);
}

.code-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.code-text {
    flex: 1;
    font-size: 2rem;
    font-weight: 800;
    color: #1A237E;
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
}

.copy-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gradient-gold);
    color: var(--bg-white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s;
}

.copy-btn:hover {
    transform: scale(1.05);
}

.invite-note {
    color: #d32f2f;
    font-weight: 600;
    font-size: 0.9375rem;
    margin-top: var(--spacing-xs);
}

/* Signup Steps */
.signup-steps {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.signup-steps li {
    margin: var(--spacing-xs) 0;
    color: var(--text-dark);
}

/* Mining Info */
.mining-info {
    background: #E8F5E9;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin: var(--spacing-md) 0;
}

.mining-info p {
    margin: var(--spacing-xs) 0;
    color: var(--text-dark);
}

/* Verify Button */
.verify-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-gold);
    color: var(--bg-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-top: var(--spacing-md);
}

.verify-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

/* FAQ Section */
.faq-section {
    margin-bottom: var(--spacing-xl);
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow);
}

.faq-question {
    padding: var(--spacing-md);
    background: #E8EAF6;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: #1A237E;
    transition: background 0.3s;
}

.faq-question:hover {
    background: #C5CAE9;
}

.faq-question i {
    transition: transform 0.3s;
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer.active {
    padding: var(--spacing-md);
    max-height: 1000px;
}

.faq-answer p {
    margin-bottom: var(--spacing-sm);
}

.faq-answer ul, .faq-answer ol {
    padding-left: var(--spacing-lg);
}

.faq-answer li {
    margin: var(--spacing-xs) 0;
}

/* Warning Section */
.warning-section {
    margin-bottom: var(--spacing-xl);
}

.warning-box {
    background: #FFF3CD;
    border: 3px solid #FFC107;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.warning-box h3 {
    color: #856404;
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.warning-box ul {
    list-style: none;
    padding: 0;
}

.warning-box li {
    padding: var(--spacing-xs) 0;
    color: #856404;
    font-weight: 500;
}

/* CTA Section */
.cta-section-pi {
    text-align: center;
    background: linear-gradient(135deg, #1A237E 0%, #3949AB 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    color: var(--bg-white);
}

.cta-section-pi h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.cta-section-pi p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.125rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cta-btn.primary {
    background: var(--gradient-gold);
    color: var(--bg-white);
}

.cta-btn.secondary {
    background: var(--bg-white);
    color: #1A237E;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* Footer Invite Code */
.invite-code-footer {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-gold);
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    margin: var(--spacing-xs) 0;
}

/* Responsive */
@media (max-width: 768px) {
    .pi-title {
        font-size: 1.5rem;
    }
    
    .pi-subtitle {
        font-size: 1rem;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .step-card {
        flex-direction: column;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .download-btn {
        width: 100%;
        justify-content: center;
    }
    
    .code-display {
        flex-direction: column;
    }
    
    .copy-btn {
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-btn {
        width: 100%;
        justify-content: center;
    }
}