:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #121212;
    --card-bg: #1a1a1a;
    --primary-color: #14F195;
    --secondary-color: #9945FF;
    --solana-purple: #9945FF;
    --solana-green: #14F195;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --border-color: #2a2a2a;
    --hover-bg: #252525;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.app-header {
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo-section {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--solana-green), var(--solana-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-image {
    width: 40px;
    height: 40px;
    display: block;
}

.tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.network-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chain-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chain-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.chain-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
}

.chain-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

.balance-display {
    display: flex;
    gap: 1.5rem;
}

.balance-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.balance-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.balance-value {
    font-weight: 600;
    color: var(--solana-green);
}

.btn-connect {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--solana-green), var(--solana-purple));
    color: var(--primary-bg);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.btn-connect:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(148, 69, 255, 0.3);
}

.wallet-icon {
    font-size: 1.25rem;
}

/* Main Content */
.app-main {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

.app-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.app-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s;
}

.app-section:hover {
    border-color: var(--solana-purple);
    box-shadow: 0 10px 30px rgba(148, 69, 255, 0.1);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.section-icon {
    font-size: 2rem;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.section-content {
    padding-top: 1rem;
}

/* Deposit Section */
.deposit-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

.amount-selector {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.amount-btn {
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.amount-btn:hover {
    border-color: var(--solana-purple);
    background: rgba(148, 69, 255, 0.1);
}

.amount-btn.active {
    border-color: var(--solana-green);
    background: linear-gradient(135deg, rgba(20, 241, 149, 0.1), rgba(148, 69, 255, 0.1));
}

.form-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.btn-primary, .btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--solana-green), var(--solana-purple));
    color: var(--primary-bg);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(148, 69, 255, 0.3);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-secondary:hover {
    border-color: var(--solana-purple);
    background: rgba(148, 69, 255, 0.1);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-icon {
    font-size: 1.25rem;
}

/* Note Display */
.note-display {
    background: var(--secondary-bg);
    border: 1px solid var(--solana-green);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.note-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--solana-green);
}

.note-icon {
    font-size: 1.25rem;
}

.note-content {
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    word-break: break-all;
    max-height: 150px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.note-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.note-warning {
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: 0.5rem;
    color: var(--warning-color);
    font-size: 0.875rem;
    text-align: center;
}

/* Playground Section */
.playground-section {
    display: flex;
    flex-direction: column;
}

.playground-subsection {
    padding: 1.5rem 0;
}

.playground-subsection:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.playground-subsection h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.subsection-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.note-loader {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.file-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 2rem;
    background: var(--secondary-bg);
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
}

.file-upload-label:hover {
    border-color: var(--solana-purple);
    background: rgba(148, 69, 255, 0.05);
}

.upload-icon {
    font-size: 2rem;
}

.upload-text {
    font-weight: 600;
    color: var(--text-secondary);
}

.divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.note-input textarea {
    width: 100%;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    resize: vertical;
}

.note-input textarea:focus {
    outline: none;
    border-color: var(--solana-purple);
}

.loaded-note-info {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-top: 1rem;
}

.info-success {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.success-icon {
    font-size: 1.25rem;
}

.note-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.detail-value {
    font-weight: 600;
}

/* Payment Form */
.payment-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-input {
    width: 100%;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.875rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--solana-purple);
    box-shadow: 0 0 0 3px rgba(148, 69, 255, 0.1);
}

.form-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.disabled-hint {
    text-align: center;
    padding: 0.75rem;
    background: rgba(160, 160, 160, 0.1);
    border-radius: 0.5rem;
}

/* Transaction Status */
.transaction-status {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: slideInUp 0.3s ease-out;
    z-index: 1000;
}

@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.status-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.status-icon {
    font-size: 2rem;
    text-align: center;
}

.status-message {
    font-weight: 600;
    text-align: center;
}

.status-details {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s;
}

.info-card:hover {
    border-color: var(--solana-purple);
    transform: translateY(-5px);
}

.info-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Footer */
.app-footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--solana-green);
}

.footer-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.wallet-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.wallet-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.wallet-option:hover {
    border-color: var(--solana-purple);
    background: rgba(148, 69, 255, 0.1);
    transform: translateX(5px);
}

.wallet-logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.wallet-icon-text {
    font-size: 2rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .app-grid {
        grid-template-columns: 1fr;
    }
    
    .balance-display {
        display: none;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-actions {
        width: 100%;
        flex-direction: column;
        gap: 1rem;
    }
    
    .network-info,
    .btn-connect {
        width: 100%;
    }
    
    .amount-selector {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .transaction-status {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .app-section {
        padding: 1.5rem;
    }
    
    .note-actions {
        grid-template-columns: 1fr;
    }
}

/* Loading Animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading {
    animation: spin 1s linear infinite;
}

/* Success Animation */
@keyframes checkmark {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.success-animation {
    animation: checkmark 0.6s ease-out;
}