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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    background-color: #1e40af;
    flex-wrap: wrap;
}

.logo {
    max-width: 200px;
    height: auto;
    object-fit: contain;
}

/* Placeholder para logo quando não houver imagem */
#company-logo:not([src]), #company-logo[src=""] {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    font-weight: bold;
}

#company-logo:not([src])::before, #company-logo[src=""]::before {
    content: "H";
}

.header h1 {
    font-size: 2.5rem;
    color: whitesmoke;
    font-weight: 700;
    margin: 0;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* Upload Section */
.upload-section {
    margin-bottom: 2rem;
}

.upload-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.upload-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

.upload-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.upload-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.btn-upload {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.file-info {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: #f1f5f9;
    border-radius: 8px;
    margin-top: 1rem;
}

.file-info i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.btn-clear {
    background: transparent;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 1rem;
}

.btn-clear:hover {
    color: #c0392b;

}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f4f6;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results Section */
.results-section {
    display: grid;
    gap: 1.5rem;
}

.result-card {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.card-header i {
    color: var(--primary-color);
}

.card-body {
    padding: 1.5rem;
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.status-badge.valid {
    background: #d1fae5;
    color: #065f46;
}

.status-badge.invalid {
    background: #fee2e2;
    color: #991b1b;
}

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

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-item label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.info-item span {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Summary Grid */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.summary-item {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    color: white;
}

.summary-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.summary-value {
    font-size: 2rem;
    font-weight: 700;
}

.summary-value.money {
    color: #fbbf24;
}

/* Hash */
.hash-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    margin-bottom: 1rem;
}

.hash-status.valid {
    background: #d1fae5;
    color: #065f46;
}

.hash-status.invalid {
    background: #fee2e2;
    color: #991b1b;
}

.hash-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.hash-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hash-item label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hash-code {
    background: #f1f5f9;
    padding: 0.75rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    word-break: break-all;
    color: var(--text-primary);
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

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

.data-table thead {
    background: #f8fafc;
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background: #f8fafc;
}

/* Export Button */
.btn-export {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-export:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Alerts */
.alerts-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.alert-item {
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert-item i {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.alert-item.error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-item.warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: white;
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 1.75rem;
    }
    
    .logo-container {
        flex-direction: column;
    }
    
    .upload-card {
        padding: 2rem 1rem;
    }
    
    .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}