/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    color: #e2e8f0;
    min-height: 100vh;
    line-height: 1.6;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo i {
    font-size: 2rem;
    color: #3b82f6;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-stats {
    display: flex;
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: #3b82f6;
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

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

.upload-container {
    display: grid;
    gap: 1.5rem;
}

.upload-area {
    background: rgba(30, 41, 59, 0.5);
    border: 2px dashed rgba(59, 130, 246, 0.3);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: rgba(59, 130, 246, 0.6);
    background: rgba(30, 41, 59, 0.7);
}

.upload-area.dragover {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

.upload-area i {
    font-size: 3rem;
    color: #3b82f6;
    margin-bottom: 1rem;
}

.upload-area h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #f1f5f9;
}

.upload-area p {
    color: #94a3b8;
    margin-bottom: 1.5rem;
}

.upload-btn {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.file-list {
    display: grid;
    gap: 0.75rem;
}

.file-item {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.file-info i {
    color: #3b82f6;
    font-size: 1.25rem;
}

.file-details h4 {
    color: #f1f5f9;
    font-weight: 500;
}

.file-details p {
    color: #94a3b8;
    font-size: 0.875rem;
}

.file-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.status-success {
    color: #10b981;
}

.status-error {
    color: #ef4444;
}

.status-loading {
    color: #f59e0b;
}

/* Controls Section */
.controls-section {
    margin-bottom: 2rem;
}

.controls-container {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 150px;
}

.filter-group label {
    font-size: 0.875rem;
    color: #94a3b8;
    font-weight: 500;
}

.filter-group select,
.filter-group input {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    color: #e2e8f0;
    font-size: 0.875rem;
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.clear-filters-btn {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    height: fit-content;
}

.clear-filters-btn:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* Dashboard Grid */
.dashboard-section {
    margin-bottom: 2rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    color: #f1f5f9;
    font-size: 1.125rem;
    font-weight: 600;
}

.card h3 i {
    color: #3b82f6;
}

/* Summary Card */
.summary-card {
    grid-column: 1 / -1;
}

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

.summary-item {
    text-align: center;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.5);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.summary-item .label {
    display: block;
    font-size: 0.875rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
}

.summary-item .value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: #3b82f6;
}

.summary-item .value.positive {
    color: #10b981;
}

.summary-item .value.negative {
    color: #ef4444;
}

/* Chart Cards */
.chart-card canvas {
    max-height: 300px;
}

/* Activity Card */
.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.activity-info h4 {
    color: #f1f5f9;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.activity-info p {
    color: #94a3b8;
    font-size: 0.75rem;
}

.activity-amount {
    font-weight: 600;
    color: #3b82f6;
}

.activity-amount.win {
    color: #10b981;
}

.activity-amount.loss {
    color: #ef4444;
}

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

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

th, td {
    text-align: left;
    padding: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
    color: #94a3b8;
    font-weight: 500;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    color: #e2e8f0;
}

.no-data {
    text-align: center;
    color: #94a3b8;
    font-style: italic;
    padding: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .header-stats {
        gap: 1rem;
    }

    .main-content {
        padding: 1rem;
    }

    .controls-container {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        min-width: auto;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .summary-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .how-to-container {
        padding: 1.5rem;
    }

    .how-to-container h2 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .summary-stats {
        grid-template-columns: 1fr;
    }

    .upload-area {
        padding: 2rem 1rem;
    }

    .step-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .step-number {
        margin-bottom: 0.5rem;
    }

    .how-to-container {
        padding: 1rem;
    }

    .how-to-note {
        flex-direction: column;
        text-align: center;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    border-top-color: #3b82f6;
    animation: spin 1s ease-in-out infinite;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(59, 130, 246, 0.7);
}

/* How to Use Section */
.how-to-section {
    margin-bottom: 2rem;
}

.how-to-container {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2rem;
}

.how-to-container h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    color: #f1f5f9;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    justify-content: center;
}

.how-to-container h2 i {
    color: #3b82f6;
    font-size: 1.75rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.step-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-2px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.step-number {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.step-content h3 {
    color: #f1f5f9;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-content p {
    color: #94a3b8;
    line-height: 1.6;
}

.step-content strong {
    color: #3b82f6;
}

.how-to-note {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.how-to-note i {
    color: #3b82f6;
    font-size: 1.25rem;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.how-to-note p {
    color: #e2e8f0;
    margin: 0;
    line-height: 1.6;
}

.how-to-note strong {
    color: #3b82f6;
}