:root {
    --bg-primary: #0b0f19;
    --card-bg: #111827;
    --card-sub-bg: rgba(31, 41, 55, 0.5);
    --border-color: #1f2937;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --mandiri-color: #f59e0b;
    --bca-color: #3b82f6;
    --bri-color: #0284c7;
    --bsi-color: #059669;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --success-bg: #064e3b;
    --success-text: #6ee7b7;
    --error-bg: #7f1d1d;
    --error-text: #fca5a5;
}

* {
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 30px 16px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
}

.container {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px 28px;
    max-width: 920px;
    width: 100%;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
    margin-bottom: 40px;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f59e0b, #3b82f6, #0284c7, #059669);
}

.header-section {
    text-align: center;
    margin-bottom: 24px;
}

.header-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 6px 14px;
    border-radius: 30px;
    margin-bottom: 12px;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

h1 {
    font-size: 26px;
    font-weight: 800;
    margin: 0 0 8px 0;
    letter-spacing: -0.5px;
    color: #ffffff;
}

p.subtitle {
    color: var(--text-secondary);
    font-size: 13.5px;
    line-height: 1.5;
    margin: 0 auto;
    max-width: 620px;
}

/* Tabs Navigation 4 Bank */
.tabs-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 20px;
    background: rgba(17, 24, 39, 0.8);
    padding: 6px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-sizing: border-box;
    width: 100%;
}

.tab-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 8px;
    border-radius: 12px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    min-width: 0;
    overflow: hidden;
}

.tab-btn span:not(.tab-badge) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tab-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
    color: #ffffff;
    background: var(--card-sub-bg);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.tab-btn.active.mandiri-tab {
    border-color: rgba(245, 158, 11, 0.4);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.15);
}

.tab-btn.active.bca-tab {
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.15);
}

.tab-btn.active.bri-tab {
    border-color: rgba(2, 132, 199, 0.4);
    box-shadow: 0 0 15px rgba(2, 132, 199, 0.15);
}

.tab-btn.active.bsi-tab {
    border-color: rgba(5, 150, 105, 0.4);
    box-shadow: 0 0 15px rgba(5, 150, 105, 0.15);
}

.tab-logo {
    height: 20px;
    width: auto;
    max-width: 50px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.tab-badge {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 6px;
    text-transform: uppercase;
}

.badge-mandiri {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-bca {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.4);
}

.badge-bri {
    background: rgba(2, 132, 199, 0.2);
    color: #38bdf8;
    border: 1px solid rgba(2, 132, 199, 0.4);
}

.badge-bsi {
    background: rgba(5, 150, 105, 0.2);
    color: #34d399;
    border: 1px solid rgba(5, 150, 105, 0.4);
}

/* Upload Area */
.upload-area {
    border: 2px dashed #374151;
    border-radius: 14px;
    padding: 26px 20px;
    text-align: center;
    background-color: rgba(17, 24, 39, 0.6);
    cursor: pointer;
    transition: all 0.25s ease;
    margin-bottom: 20px;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--accent-color);
    background-color: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
}

.upload-icon {
    font-size: 32px;
    margin-bottom: 6px;
    display: block;
}

.file-label {
    color: #e5e7eb;
    font-size: 14px;
    font-weight: 600;
    display: block;
}

.file-sublabel {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 4px;
}

.file-name {
    margin-top: 12px;
    font-size: 13px;
    font-weight: 700;
    color: #818cf8;
    background: rgba(99, 102, 241, 0.12);
    padding: 8px 14px;
    border-radius: 8px;
    display: inline-block;
    word-break: break-all;
    border: 1px solid rgba(99, 102, 241, 0.25);
}

input[type="file"] {
    display: none;
}

/* Action Buttons Grid (Double Download Buttons for All Banks) */
.btn-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

@media (max-width: 600px) {
    .btn-group {
        grid-template-columns: 1fr;
    }
}

.btn {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #ffffff;
    border: none;
    padding: 13px 16px;
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: 0.3px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 8px 16px -4px rgba(99, 102, 241, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
    transform: translateY(-1px);
    box-shadow: 0 10px 20px -4px rgba(99, 102, 241, 0.45);
}

.btn:disabled {
    background: #1f2937;
    color: #4b5563;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-secondary {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    box-shadow: 0 8px 16px -4px rgba(37, 99, 235, 0.35);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    box-shadow: 0 10px 20px -4px rgba(37, 99, 235, 0.45);
}

/* Status Box */
.status-box {
    padding: 13px 16px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 500;
    display: none;
    line-height: 1.5;
    margin-bottom: 20px;
}

.status-box.success {
    background-color: var(--success-bg);
    border: 1px solid rgba(110, 231, 183, 0.3);
    color: var(--success-text);
    display: block;
}

.status-box.error {
    background-color: var(--error-bg);
    border: 1px solid rgba(252, 165, 165, 0.3);
    color: var(--error-text);
    display: block;
}

/* Account Metadata Card */
.account-card {
    display: none;
    background: rgba(31, 41, 55, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 14px;
    padding: 16px 18px;
    margin-bottom: 20px;
}

.account-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.meta-value {
    font-size: 14px;
    color: #ffffff;
    font-weight: 700;
    margin-top: 2px;
}

.meta-value.success {
    color: #6ee7b7;
}

.meta-value.warning {
    color: #fca5a5;
}

/* Preview Table Section */
.preview-section {
    display: none;
    margin-top: 20px;
    background: rgba(17, 24, 39, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.preview-title {
    font-size: 13.5px;
    font-weight: 700;
    color: #f3f4f6;
}

.preview-count {
    font-size: 11.5px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 8px;
    border-radius: 6px;
}

.table-wrapper {
    max-height: 280px;
    overflow-y: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    text-align: left;
}

th {
    background: #1f2937;
    color: #9ca3af;
    padding: 9px 12px;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 2;
}

td {
    padding: 8px 12px;
    border-top: 1px solid rgba(55, 65, 81, 0.5);
    color: #e5e7eb;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Rules Card */
.rules-card {
    margin-top: 20px;
    background-color: rgba(31, 41, 55, 0.35);
    border: 1px solid rgba(55, 65, 81, 0.5);
    border-radius: 12px;
    padding: 15px 18px;
    font-size: 12px;
    color: #d1d5db;
}

.rules-card strong {
    color: #f3f4f6;
    display: block;
    margin-bottom: 6px;
    font-size: 12.5px;
}

.rules-card ul {
    padding-left: 18px;
    margin: 0;
}

.rules-card li {
    margin-bottom: 4px;
    line-height: 1.5;
}

.rules-card code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: monospace;
    color: #a5b4fc;
}

.footer-credit {
    margin-top: 24px;
    text-align: center;
    font-size: 11.5px;
    color: var(--text-secondary);
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    .tabs-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }
}

@media (max-width: 640px) {
    body {
        padding: 0;
        margin: 0;
        display: block;
        background: var(--bg-primary);
        background-image: none;
    }

    .container {
        width: 100%;
        max-width: 100%;
        min-height: 100vh;
        margin: 0;
        padding: 20px 14px;
        border: none;
        border-radius: 0;
        box-shadow: none;
        background: transparent;
    }

    .container::before {
        height: 3px;
    }

    .header-section {
        margin-bottom: 18px;
    }

    .header-section h1 {
        font-size: 22px;
    }

    .header-tag {
        font-size: 10px;
        padding: 4px 10px;
        margin-bottom: 8px;
    }

    p.subtitle {
        font-size: 12.5px;
    }

    .tabs-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
        padding: 4px;
        border-radius: 12px;
        margin-bottom: 16px;
    }

    .tab-btn {
        padding: 8px 6px;
        gap: 5px;
        border-radius: 8px;
    }

    .tab-logo {
        height: 16px;
        max-width: 32px;
    }

    .tab-btn span:not(.tab-badge) {
        font-size: 12px;
    }

    .tab-badge {
        font-size: 9px;
        padding: 2px 4px;
    }

    .upload-area {
        padding: 20px 12px;
        margin-bottom: 16px;
    }

    .upload-icon {
        font-size: 28px;
    }

    .file-label {
        font-size: 13px;
    }

    .file-sublabel {
        font-size: 11px;
    }

    .btn-group {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-bottom: 16px;
    }

    .btn {
        padding: 12px 14px;
        font-size: 13px;
    }

    .account-card {
        padding: 12px 14px;
        margin-bottom: 16px;
    }

    .account-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .meta-value {
        font-size: 12.5px;
    }

    .preview-section {
        padding: 12px;
        margin-top: 16px;
    }

    .rules-card {
        padding: 12px 14px;
        margin-top: 16px;
    }
}