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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-hover: #1f2b47;
    
    --text-primary: #ffffff;
    --text-secondary: #b8b8d1;
    --text-muted: #6c6c8e;
    
    --border-color: #2a2a4a;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 15px 50px rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 40px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.logo-text {
    font-size: 28px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.stats-mini {
    display: flex;
    gap: 20px;
}

.stat-mini {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    padding: 10px 15px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.stat-icon {
    font-size: 20px;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    color: #4facfe;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--danger-gradient);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(250, 112, 154, 0.4);
}

/* Main Content */
.main-content {
    padding: 40px 0;
    min-height: calc(100vh - 200px);
}

/* Section Styles */
.section {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 24px;
    margin-bottom: 8px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Upload Area */
.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 15px;
    padding: 60px 40px;
    text-align: center;
    background: var(--bg-card);
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: #667eea;
    background: var(--bg-hover);
}

.upload-area.drag-over {
    border-color: #4facfe;
    background: rgba(79, 172, 254, 0.1);
}

.upload-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.upload-text {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.upload-subtext {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

/* Buttons */
.btn-primary, .btn-success, .btn-secondary, .btn-add, .btn-download {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

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

.btn-add {
    background: var(--success-gradient);
    color: white;
}

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

.btn-primary:hover, .btn-success:hover, .btn-add:hover, .btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

/* File List */
.file-list {
    margin-top: 20px;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--bg-card);
    border-radius: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
}

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

.file-icon {
    font-size: 24px;
}

.file-name {
    font-weight: 600;
}

.file-size {
    color: var(--text-muted);
    font-size: 13px;
}

.file-remove {
    background: var(--danger-gradient);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.3s ease;
}

.file-remove:hover {
    transform: scale(1.05);
}

.upload-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

/* Progress Bar */
.progress-bar {
    margin-top: 20px;
    background: var(--bg-card);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    height: 50px;
}

.progress-fill {
    height: 100%;
    background: var(--success-gradient);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    z-index: 1;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 12px 24px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

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

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    margin-top: 20px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Blacklist */
.blacklist-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.blacklist-input-group input {
    flex: 1;
    padding: 12px 15px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
}

.blacklist-input-group input:focus {
    outline: none;
    border-color: #667eea;
}

.blacklist-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.blacklist-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.blacklist-item-text {
    font-weight: 600;
}

.blacklist-item-remove {
    background: none;
    border: none;
    color: #fa709a;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.3s ease;
}

.blacklist-item-remove:hover {
    transform: scale(1.2);
}

/* Checker Section */
.checker-input-area {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.checker-input-area textarea {
    width: 100%;
    min-height: 200px;
    padding: 15px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'Courier New', monospace;
    resize: vertical;
}

.checker-input-area textarea:focus {
    outline: none;
    border-color: #667eea;
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-icon-large {
    font-size: 48px;
    margin-bottom: 15px;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Results Section */
.result-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 10px 15px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
}

.results-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.result-tab-btn {
    flex: 1;
    padding: 15px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.result-tab-btn:hover {
    border-color: #667eea;
    color: var(--text-primary);
}

.result-tab-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

.result-tab-pane {
    display: none;
}

.result-tab-pane.active {
    display: block;
}

/* Card List */
.card-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.card-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.card-item:hover {
    border-color: #667eea;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.2);
}

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

.card-number-display {
    font-size: 18px;
    font-weight: 700;
    font-family: 'Courier New', monospace;
}

.validation-badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.validation-badge.valid {
    background: rgba(79, 172, 254, 0.2);
    color: #4facfe;
}

.validation-badge.dead {
    background: rgba(250, 112, 154, 0.2);
    color: #fa709a;
}

.card-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.card-detail {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.card-detail-icon {
    font-size: 16px;
}

.card-detail-label {
    color: var(--text-muted);
}

.card-detail-value {
    font-weight: 600;
}

/* CVC List */
.cvc-list {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    font-family: 'Courier New', monospace;
}

.cvc-item {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.cvc-item:hover {
    background: var(--bg-hover);
}

.cvc-item-number {
    display: inline-block;
    width: 40px;
    color: var(--text-muted);
}

.cvc-item-data {
    color: var(--text-primary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
}

.footer p {
    color: var(--text-muted);
    margin: 5px 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 15, 35, 0.95);
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay p {
    margin-top: 20px;
    font-size: 18px;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .stats-mini {
        flex-direction: column;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .search-input {
        width: 100%;
    }
    
    .card-details {
        grid-template-columns: 1fr;
    }
}