:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #f8fafc;
    --accent-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
    
    /* Denomination colors */
    --denom-yellow: #fbbf24;
    --denom-orange: #f97316;
    --denom-blue: #3b82f6;
    --denom-green: #10b981;
    --denom-red: #ef4444;
    --denom-purple: #8b5cf6;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    min-height: 100vh;
    padding: 20px;
    color: var(--text-primary);
    transition: background-image 0.5s ease-in-out;
    background-color: black;
}

/* Currency-specific backgrounds */
body.currency-usd {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.5) 0%, rgba(64, 6, 122, 0.5) 100%), url('../img/usd.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

body.currency-eur {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.5) 0%, rgba(64, 6, 122, 0.5) 100%), url('../img/eur.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

body.currency-jpy {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.5) 0%, rgba(64, 6, 122, 0.5) 100%), url('../img/jpy.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

body.currency-gbp {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.5) 0%, rgba(64, 6, 122, 0.5) 100%), url('../img/gbp.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

/* Coin-specific backgrounds */
body.currency-usd.asset-coins {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.5) 100%), url('../img/usd_coins.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

body.currency-eur.asset-coins {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.5) 100%), url('../img/eur_coins.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

body.currency-jpy.asset-coins {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.5) 100%), url('../img/jpy_coins.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

body.currency-gbp.asset-coins {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.5) 100%), url('../img/gbp_coins.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-color: black;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

.input-panel, .results-panel {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
}

.clear-results-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.1rem;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
    line-height: 1;
}

.clear-results-btn:hover {
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
}

.input-panel h2, .results-panel h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-group {
    margin-bottom: 25px;
}

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

.form-group input, .form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.amount-input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.amount-input-container input {
    padding-left: 40px;
}

.currency-indicator {
    position: absolute;
    left: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    pointer-events: none;
    z-index: 1;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.stock-section {
    background: var(--secondary-color);
    padding: 10px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.stock-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    /* margin-bottom: 15px; */
    padding-left: 10px;
    color: var(--text-primary);
}

.stock-multi-currency {
    background: white;
    border-radius: 8px;
    /* border: 1px solid var(--border-color); */
    overflow: hidden;
}

.stock-table {
    width: 100%;
    border-collapse: collapse;
}

.stock-table th,
.stock-table td {
    padding: 8px 12px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.stock-table th {
    background: var(--secondary-color);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.stock-table th:first-child {
    text-align: left;
    padding-left: 16px;
}

.denom-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    min-width: 60px;
    justify-content: center;
}

.stock-table .stock-cell {
    position: relative;
    padding: 4px;
}

.stock-table .stock-cell input {
    width: 100%;
    padding: 6px 24px 6px 8px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.85rem;
    background: white;
    -moz-appearance: textfield;
}

.stock-table .stock-cell input::-webkit-outer-spin-button,
.stock-table .stock-cell input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.stock-table .stock-cell input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.stock-subtotal {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-align: right;
    padding: 0 6px;
    white-space: nowrap;
    min-width: 50px;
}

.stock-subtotal.infinite {
    opacity: 0.3;
}

.stock-total-row {
    border-top: 1px solid var(--border-color);
}

.stock-total-label {
    text-align: right;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 4px 4px;
}

.stock-table .stock-cell input:disabled {
    background: #f8f9fa;
    color: #adb5bd;
    cursor: not-allowed;
}

.stock-table .stock-cell-spinner {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.stock-table .stock-cell-spinner-btn {
    width: 16px;
    height: 12px;
    border: none;
    background: var(--border-color);
    color: var(--text-secondary);
    font-size: 8px;
    line-height: 1;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stock-table .stock-cell-spinner-btn:first-child {
    border-radius: 3px 3px 0 0;
}

.stock-table .stock-cell-spinner-btn:last-child {
    border-radius: 0 0 3px 3px;
}

.stock-table .stock-cell-spinner-btn:hover {
    background: var(--primary-color);
    color: white;
}

.stock-table .stock-cell-spinner-btn:active {
    transform: scale(0.9);
}

.stock-table .empty-cell {
    background: #f8f9fa;
    color: #adb5bd;
    font-size: 0.8rem;
}

.stock-table .enabled-cell {
    text-align: center;
    padding: 8px;
}

.enabled-checkbox {
    position: relative;
    display: inline-block;
}

.enabled-checkbox input[type="checkbox"] {
    opacity: 0;
    position: absolute;
    width: 20px;
    height: 20px;
    margin: 0;
    cursor: pointer;
}

.enabled-checkbox .checkbox-label {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.enabled-checkbox .checkbox-label i {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
    color: white;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.enabled-checkbox input[type="checkbox"]:checked + .checkbox-label {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.enabled-checkbox input[type="checkbox"]:checked + .checkbox-label i {
    opacity: 1;
}

.enabled-checkbox input[type="checkbox"]:not(:checked) + .checkbox-label {
    background: var(--danger-color);
    border-color: var(--danger-color);
}

.enabled-checkbox input[type="checkbox"]:not(:checked) + .checkbox-label::after {
    content: '×';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.enabled-checkbox:hover .checkbox-label {
    transform: scale(1.1);
}

.stock-input {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stock-input label {
    font-weight: 500;
    margin-bottom: 5px;
    padding: 4px 8px;
    border-radius: 6px;
    color: white;
    font-size: 0.9rem;
    min-width: 60px;
    text-align: center;
}

.stock-input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.stock-input input {
    width: 80px;
    padding: 8px;
    padding-right: 32px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    -moz-appearance: textfield; /* Hide Firefox spinners */
}

.stock-input input::-webkit-outer-spin-button,
.stock-input input::-webkit-inner-spin-button {
    -webkit-appearance: none; /* Hide Chrome/Safari spinners */
    margin: 0;
}

.stock-spinner {
    position: absolute;
    right: 2px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.stock-spinner-btn {
    width: 20px;
    height: 14px;
    border: none;
    background: var(--border-color);
    color: var(--text-secondary);
    font-size: 10px;
    line-height: 1;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stock-spinner-btn:first-child {
    border-radius: 4px 4px 0 0;
}

.stock-spinner-btn:last-child {
    border-radius: 0 0 4px 4px;
}

.stock-spinner-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

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

/* New vertical tables styles */
.stock-tables-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 15px;
    margin: 10px; 
}

.stock-table-wrapper {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: stretch;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    opacity: 0.75;
}

.stock-table-wrapper.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
    opacity: 1;
}

.currency-header {
    background: var(--secondary-color);
    padding: 8px 4px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    border-right: 1px solid var(--border-color);
    writing-mode: sideways-lr;
    text-orientation: sideways;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 35px;
    white-space: nowrap;
}

.table-container {
    flex: 1;
    overflow: hidden;
}

.stock-table-single {
    width: 100%;
    border-collapse: collapse;
}

.stock-table-single th,
.stock-table-single td {
    padding: 2px 2px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.stock-table-single tr:last-child td {
    border-bottom: none;
}

.stock-table-single th {
    background: rgba(255, 255, 255, 0.05);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.stock-table-single .stock-cell {
    position: relative;
    padding: 4px;
}

.stock-table-single .stock-cell input {
    width: 100%;
    padding: 8px 24px 8px 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    background: white;
    -moz-appearance: textfield;
    min-width: 80px;
}

.stock-table-single .stock-cell input::-webkit-outer-spin-button,
.stock-table-single .stock-cell input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.stock-table-single .stock-cell input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.stock-table-single .stock-cell input:disabled {
    background: #f8f9fa;
    color: #adb5bd;
    cursor: not-allowed;
}

.stock-table-single .stock-cell-spinner {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.stock-table-single .stock-cell-spinner-btn {
    width: 16px;
    height: 12px;
    border: none;
    background: var(--border-color);
    color: var(--text-secondary);
    font-size: 8px;
    line-height: 1;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stock-table-single .stock-cell-spinner-btn:first-child {
    border-radius: 3px 3px 0 0;
}

.stock-table-single .stock-cell-spinner-btn:last-child {
    border-radius: 0 0 3px 3px;
}

.stock-table-single .stock-cell-spinner-btn:hover {
    background: var(--primary-color);
    color: white;
}

.stock-table-single .stock-cell-spinner-btn:active {
    transform: scale(0.9);
}

@media (max-width: 768px) {
    .stock-tables-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

.btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    shadow: var(--shadow-lg);
}

.btn:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

.results-panel {
    min-height: 400px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.loading i {
    font-size: 2rem;
    margin-bottom: 10px;
    animation: spin 1s linear infinite;
}

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

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

.btn.stop-btn {
    background: var(--danger-color);
}

.btn.stop-btn:hover {
    background: #dc2626;
}

.error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.variant {
    background: var(--secondary-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
}

.variant.loose {
    border-left-color: var(--warning-color);
}

.variant-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.variant-type {
    font-weight: 600;
    font-size: 1.1rem;
}

.variant-total {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.breakdown {
    display: grid;
    gap: 10px;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: white;
    border-radius: 8px;
    border-left: 4px solid;
}

.breakdown-item .denom {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.breakdown-item .value {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Denomination colors */
.denom-yellow { background-color: var(--denom-yellow); }
.denom-orange { background-color: var(--denom-orange); }
.denom-blue { background-color: var(--denom-blue); }
.denom-green { background-color: var(--denom-green); }
.denom-red { background-color: var(--denom-red); }
.denom-purple { background-color: var(--denom-purple); }

/* Language switcher */
.top-right-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    z-index: 10;
}

.language-switcher {
    display: flex;
    gap: 10px;
    align-items: center;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.lang-btn.active {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border-color: white;
}

.lang-separator {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 300;
}

/* Custom Dialog Modal */
.custom-dialog-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(3px);
}

.custom-dialog-modal.show {
    display: flex;
}

.custom-dialog-content {
    background: white;
    border-radius: 16px;
    min-width: 400px;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: dialogAppear 0.3s ease-out;
}

@keyframes dialogAppear {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.custom-dialog-header {
    padding: 24px 24px 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.custom-dialog-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.custom-dialog-body {
    padding: 20px 24px;
}

.custom-dialog-body p {
    margin: 0;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.stock-changes {
    margin-top: 16px;
    background: var(--secondary-color);
    border-radius: 8px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.stock-changes-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.stock-change-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.stock-change-denom {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stock-change-denom-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    color: white;
    font-weight: 600;
    font-size: 0.75rem;
    min-width: 40px;
    text-align: center;
}

.stock-change-values {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
}

.stock-change-before {
    color: var(--text-secondary);
}

.stock-change-arrow {
    color: var(--primary-color);
    font-weight: bold;
}

.stock-change-after {
    color: var(--accent-color);
    font-weight: 600;
}

.stock-change-deduction {
    color: var(--danger-color);
    font-weight: 600;
    font-size: 0.8rem;
}

.custom-dialog-footer {
    padding: 16px 24px 24px 24px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.dialog-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 80px;
}

.dialog-btn-secondary {
    background: var(--secondary-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.dialog-btn-secondary:hover {
    background: #e2e8f0;
    color: var(--text-primary);
}

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

.dialog-btn-primary:hover {
    background: #059669;
    transform: translateY(-1px);
}

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

.dialog-btn-primary.danger:hover {
    background: #dc2626;
}

/* Block Visualization Modal */
.block-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.block-modal.show {
    display: flex;
}

.block-modal-content {
    background: white;
    border-radius: 20px;
    min-width: 700px;
    max-width: 90vw;
    max-height: 90vh;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .block-modal-content {
        min-width: 300px;
    }
}

.block-modal-header {
    padding: 10px 30px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.block-modal-body {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
}

/* Order composition legend */
.order-legend {
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: 10px;
}

.order-legend-title {
    font-weight: 600;
    font-size: 0.85em;
    color: var(--primary-color);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.order-legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 3px 0;
    font-size: 0.85em;
}

.order-legend-qty {
    min-width: 80px;
}

.order-legend-partial {
    min-width: 55px;
    font-size: 0.8em;
    color: orange;
}

.order-legend-value {
    margin-left: auto;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Collected block state */
.block-container {
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.block-container.collected {
    opacity: 0.5;
}

.block-container.collected::after {
    content: '\f058';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    color: var(--accent-color);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
    pointer-events: none;
    z-index: 10;
}

/* Collected progress in footer */
.collected-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    min-height: 24px;
}

.collected-amount {
    color: var(--accent-color);
}

.collected-pct {
    color: var(--text-secondary);
    font-size: 0.85em;
}

.footer-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

/* Partial items in order legend */
.order-legend-item.partial {
    background: rgba(255, 165, 0, 0.06);
    border-radius: 4px;
    padding: 3px 6px;
    margin: 1px -6px;
}

.block-modal-footer {
    padding: 5px 15px 15px;
    border-top: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    background: var(--bg-secondary);
}

@media (max-width: 768px) {
    .block-modal-header,
    .block-modal-body {
        padding: 10px 20px;
    }

    .block-modal-footer {
        padding: 5px 10px 10px;
    }
}

.block-modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    padding: 0;
    line-height: 1;
}

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

.block-visualization {
    perspective: 1000px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.block-container {
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: box-shadow 0.3s ease;
}

.block-container:hover {
    box-shadow: 0 0 15px 0 rgba(0, 0, 0, 0.2);
}

.block-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.block-item-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    text-align: center;
}

.block-3d {
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
    margin: 10px;
    image-rendering: crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.block-layer {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    position: relative;
}

.block-layer.bottom {
    /* transform: translateY(0px) translateZ(10px); */
    margin-top: 6px;
}

.block-layer.top {
    /* transform: translateY(0px); */
    margin-bottom: 6px;
}

.stack {
    width: 60px;
    height: 80px;
    position: relative;
    display: flex;
    flex-direction: column-reverse;
    justify-content: flex-end;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.stack:hover {
    transform: translateZ(5px);
}

.bundle {
    width: 100%;
    height: 14px;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 2px;
    margin-bottom: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    image-rendering: crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.bundle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent);
}

.bundle.animate {
    animation: bundleAppear 0.5s ease-out forwards;
    opacity: 0;
    transform: translateY(-20px);
}

@keyframes bundleAppear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stack-label {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.visualization-controls {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.viz-btn {
    padding: 8px 16px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    background: white;
    color: var(--primary-color);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

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

.execute-order-btn {
    background: var(--accent-color) !important;
    color: white !important;
    border-color: var(--accent-color) !important;
    font-weight: 600;
}

.execute-order-btn:hover {
    background: #059669 !important;
    border-color: #059669 !important;
    transform: translateY(-1px);
}

.execute-order-btn:disabled {
    background: #94a3b8 !important;
    border-color: #94a3b8 !important;
    cursor: not-allowed;
    transform: none;
}

/* Coin block visualization */
.coin-block-3d {
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
    margin: 10px;
}

.coin-block-layer {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    position: relative;
}

.coin-block-layer.bottom {
    margin-top: 6px;
}

.coin-block-layer.top {
    margin-bottom: 6px;
}

.coin-roll {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.25), inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.coin-roll::before {
    content: '';
    position: absolute;
    top: 5%;
    left: 15%;
    width: 40%;
    height: 30%;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.4), transparent);
    border-radius: 50%;
}

.coin-roll:hover {
    transform: scale(1.05);
}

/* Responsive design */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .initial-arrow {
        transform: rotate(90deg);
    }

    .container {
        display: flex;
        flex-direction: column;
        text-align: center;
    }

    .top-right-panel {
        position: static;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        margin-bottom: 4px;
        order: 1;
    }

    .header {
        margin-bottom: 10px;
        padding-top: 0;
        order: 2;
    }

    .header h1 {
        font-size: 1.6rem;
    }

    .main-content {
        order: 4;
    }

    .input-panel, .results-panel {
        padding: 20px;
        overflow: hidden;
    }

    .results-panel > div:first-child,
    .stock-section > div:first-child {
        flex-wrap: wrap;
        gap: 8px;
    }

    .stock-table .stock-cell input {
        width: 60px;
        font-size: 0.8rem;
    }
}

@media (max-width: 640px) {
    .stock-subtotal {
        display: none;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .stock-table .stock-cell input {
        width: 50px;
        font-size: 0.75rem;
    }
    
    .stock-table th,
    .stock-table td {
        padding: 6px 8px;
    }
    
    .custom-dialog-content {
        min-width: 300px;
        margin: 20px;
    }
    
    .custom-dialog-header {
        padding: 20px 20px 12px 20px;
    }
    
    .custom-dialog-body {
        padding: 16px 20px;
    }
    
    .custom-dialog-footer {
        padding: 12px 20px 20px 20px;
        flex-direction: column;
    }
    
    .dialog-btn {
        width: 100%;
    }
}

.help-hint {
    display: inline-block;
    margin-left: 5px;
    color: var(--primary-color);
    opacity: 0.5;
    cursor: pointer;
    transition: opacity 0.2s;
}

.help-hint:hover {
    opacity: 1;
}

.github-link {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 155px;
}

.github-link:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    color: white;
}

.steam-link {
    position: absolute;
    top: 60px;
    left: 20px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 155px;
}

.steam-link:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    color: white;
}

@media (max-width: 768px) {
    .github-link,
    .steam-link {
        position: static;
        display: inline-flex;
        width: auto;
        margin: 0 4px 8px;
        order: 3;
    }
}

/* Currency buttons */
.currency-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

@media (max-width: 768px) {
    .currency-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}


.currency-btn {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 0.9rem;
}

.currency-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.currency-flag {
    font-size: 1.2rem;
}

.currency-code {
    font-weight: 600;
    font-size: 0.8rem;
}

/* Display order switch */
.display-order-switch {
    display: flex;
    gap: 4px;
    background: var(--secondary-color);
    border-radius: 8px;
    padding: 4px;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

#stockModeSwitch.display-order-switch {
    background: white;
}

.order-btn {
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.order-btn:hover {
    background: rgba(255, 255, 255, 0.7);
    color: var(--text-primary);
}

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

/* Tour link */
.tour-link {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
}

.tour-link:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    color: white;
}

/* Guided Tour */
.tour-backdrop {
    display: none;
    position: fixed;
    z-index: 10001;
    border-radius: 8px;
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.45);
    pointer-events: none;
}

.tour-backdrop.animating {
    transition: top 0.15s ease, left 0.15s ease, width 0.15s ease, height 0.15s ease;
}

.tour-backdrop.active {
    display: block;
}

.tour-tooltip {
    display: none;
    position: fixed;
    z-index: 10002;
    background: white;
    border-radius: 12px;
    padding: 16px 20px;
    max-width: 320px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 1);
    animation: tourFadeIn 0.2s ease;
}

.tour-tooltip.active {
    display: block;
}

@keyframes tourFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.tour-text {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 12px;
}

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

.tour-counter {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.tour-buttons {
    display: flex;
    gap: 8px;
}

.tour-skip-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 6px 10px;
}

.tour-skip-btn:hover {
    color: var(--text-primary);
}

.tour-next-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 6px 16px;
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

.tour-next-btn:hover {
    background: var(--primary-hover);
}