@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&display=swap');

:root {
    --bg-color: #0f172a;
    --surface: #1e293b;
    --surface-alt: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --border-color: #334155;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 30px 15px;
    font-size: 16px;
}

.container {
    max-width: 1200px; 
    margin: 0 auto;
    background: var(--surface);
    padding: 30px 20px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border-color);
    box-sizing: border-box;
}

h2 {
    text-align: center;
    color: var(--text-primary);
    margin-top: 0;
    margin-bottom: 20px;
    font-weight: 700;
    font-size: clamp(24px, 4vw, 32px);
    letter-spacing: -0.5px;
}

h2 span {
    color: var(--accent);
}

/* Privacy Note */
.privacy-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(15, 23, 42, 0.4);
    border: 1px dashed var(--border-color);
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 30px;
    color: var(--text-secondary);
    font-size: clamp(12px, 1.5vw, 14px);
    font-weight: 500;
    text-align: center;
}

.privacy-note svg {
    color: var(--success);
    flex-shrink: 0;
}

/* Controls Section */
.controls {
    background: rgba(15, 23, 42, 0.5);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    border: 1px solid var(--border-color);
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: clamp(14px, 2vw, 18px);
    color: var(--text-primary);
    user-select: none;
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--accent);
    cursor: pointer;
}

input[type="number"], input[type="text"] {
    padding: 10px 15px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: clamp(14px, 2vw, 18px);
    color: var(--text-primary);
    outline: none;
    transition: all 0.2s ease;
    font-weight: 500;
    box-sizing: border-box;
}

input[type="number"]:focus, input[type="text"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

input[type="number"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Buttons */
button {
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    font-size: clamp(14px, 2vw, 18px);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-update {
    background-color: var(--surface-alt);
    color: var(--text-primary);
}

.btn-update:hover {
    background-color: var(--border-color);
}

.btn-clear {
    background-color: transparent;
    color: var(--danger);
    border: 2px solid var(--danger);
    min-width: 140px;
}

.btn-clear:hover {
    background-color: var(--danger);
    color: white;
}

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
}

.btn-generate {
    background-color: var(--accent);
    color: white;
    flex-grow: 1;
}

.btn-generate:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-copy {
    background-color: var(--success);
    color: white;
    width: 100%;
}

.btn-copy:hover {
    background-color: var(--success-hover);
}

/* Table Responsive Styles */
.table-container {
    overflow-x: auto;
    margin-bottom: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: rgba(15, 23, 42, 0.3);
    width: 100%;
}

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

th, td {
    border-bottom: 1px solid var(--border-color);
    padding: 14px 10px; 
    text-align: left;
    font-size: clamp(13px, 1.2vw + 4px, 16px); 
    line-height: 1.4;
}

th {
    background-color: var(--surface);
    color: var(--text-secondary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: clamp(11px, 1vw + 2px, 13px);
    letter-spacing: 0.5px;
}

th:nth-child(2), td:nth-child(2) { min-width: 160px; } 
th:nth-child(4), td:nth-child(4) { min-width: 130px; } 
th:last-child, td:last-child { min-width: 140px; } 

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.03);
}

.claim-input {
    width: 100%;
    max-width: 150px; 
    font-weight: 700;
    color: var(--success);
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    text-align: center;
}

.claim-input.error {
    border-color: var(--danger);
    background-color: rgba(239, 68, 68, 0.1);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.amount-col {
    font-family: 'Fira Code', monospace;
    font-weight: 500;
    color: #f8fafc;
    white-space: nowrap; 
}

.comma-format {
    color: #38bdf8; 
    font-weight: 600;
}

/* Output Area */
.output-section {
    background: rgba(15, 23, 42, 0.3);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

textarea {
    width: 100%;
    height: 300px;
    padding: 20px;
    font-family: 'Fira Code', monospace;
    font-size: 15px;
    color: #a78bfa;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: #0f172a;
    resize: vertical;
    box-sizing: border-box;
    outline: none;
    margin-bottom: 15px;
    line-height: 1.6;
}

textarea:focus {
    border-color: var(--accent);
}

.error-message {
    color: var(--danger);
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 20px;
    display: none;
    text-align: center;
    background: rgba(239, 68, 68, 0.1);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
    -webkit-appearance: none; 
    margin: 0; 
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    #clearTableBtn { margin-left: 0 !important; width: 100%; }
    #bulkAmountInput { flex-grow: 1; }
}