/* Library of Bitcoin - Modern Stacks Blockchain Interface Styles */

:root {
    --primary-color: #6366f1;
    --primary-hover: #5b5bf6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: var(--surface);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-content {
    flex: 1;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.title i {
    font-size: 2.2rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 0;
}

.controls {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.network-select {
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.network-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.wallet-controls {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #475569;
    transform: translateY(-1px);
}

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

.btn-outline:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-danger {
    background: var(--error-color);
    color: white;
    padding: 8px 12px;
    font-size: 0.85rem;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

/* Connection Status */
.connection-status {
    background: var(--surface);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.status-indicator.connected {
    color: var(--success-color);
}

.status-indicator.disconnected {
    color: var(--error-color);
}

.status-indicator i {
    font-size: 0.8rem;
}

.wallet-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.address {
    font-family: 'Monaco', 'SF Mono', monospace;
    background: var(--background);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Navigation */
.navigation {
    display: flex;
    gap: 4px;
    margin-bottom: 30px;
    background: var(--surface);
    padding: 6px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.nav-btn {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.nav-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
}

.nav-btn:hover:not(.active) {
    background: var(--background);
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    position: relative;
}

.section {
    display: none;
    background: var(--surface);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.section.active {
    display: block;
}

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

.section-header h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* Forms */
.function-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    background: var(--surface);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* Arguments Section */
.arguments-section {
    margin-bottom: 30px;
}

.arguments-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.arguments-header label {
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

.arguments-container {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 20px;
    min-height: 60px;
}

.argument-group {
    margin-bottom: 16px;
}

.argument-group:last-child {
    margin-bottom: 0;
}

.argument-row {
    display: grid;
    grid-template-columns: 150px 1fr auto;
    gap: 12px;
    align-items: center;
}

.arg-type {
    min-width: 150px;
}

.remove-arg-btn {
    height: 44px;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 20px;
}

/* Results */
.result-section {
    margin-top: 30px;
    padding: 24px;
    background: var(--background);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.result-section h3 {
    margin-bottom: 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-content {
    font-family: 'Monaco', 'SF Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.transaction-result {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item strong {
    color: var(--text-primary);
}

.tx-link {
    color: var(--primary-color);
    text-decoration: none;
    font-family: 'Monaco', 'SF Mono', monospace;
    font-size: 0.85rem;
}

.tx-link:hover {
    text-decoration: underline;
}

.status-pending {
    color: var(--warning-color);
    font-weight: 500;
}

.read-result pre {
    background: var(--surface);
    padding: 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-content {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    padding: 24px 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

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

.modal-body {
    padding: 20px 24px;
}

.modal-body p {
    margin: 0;
    line-height: 1.6;
}

.modal-footer {
    padding: 0 24px 24px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.loading-content {
    text-align: center;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-content p {
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .controls {
        justify-content: center;
        width: 100%;
    }
    
    .connection-status {
        flex-direction: column;
        text-align: center;
    }
    
    .nav-btn {
        font-size: 0.9rem;
        padding: 10px 16px;
    }
    
    .section {
        padding: 20px;
    }
    
    .argument-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .arg-type {
        min-width: auto;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .modal-content {
        margin: 10px;
        max-height: 90vh;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.6rem;
        flex-direction: column;
        gap: 8px;
    }
    
    .navigation {
        flex-direction: column;
        gap: 2px;
    }
    
    .wallet-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        justify-content: center;
    }
}

/* Success and Error States */
.success {
    color: var(--success-color);
}

.error {
    color: var(--error-color);
}

.warning {
    color: var(--warning-color);
}

/* Form Validation States */
.form-input.invalid {
    border-color: var(--error-color);
}

.form-input.valid {
    border-color: var(--success-color);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

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

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Focus Management */
.focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border: #000000;
        --text-secondary: #000000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .modal, .loading-overlay {
        display: none !important;
    }
    
    .btn {
        border: 1px solid #000;
    }
}