:root {
    --bg: #0d1117;
    --card-bg: #161b22;
    --primary: #58a6ff;
    --accent: #bc8cff;
    --text: #c9d1d9;
    --text-muted: #8b949e;
    --border: #30363d;
    --danger: #f85149;
    --success: #238636;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    position: relative;
    min-height: 100vh;
}

body::before {
    content: "";
    background-image: url('io-images-database-4941338_1280.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.15;
    z-index: -1;
    pointer-events: none;
}

.brand-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.share-row {
    display: flex;
    gap: 8px;
    padding-left: 52px; /* logo width + gap approximately */
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 0.8rem 3rem;
    background: rgba(22, 27, 34, 0.95);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(5px);
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(88, 166, 255, 0.5);
}

.nav-cta {
    background: linear-gradient(45deg, var(--primary), var(--accent));
    color: white;
    padding: 8px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(88, 166, 255, 0.4);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 20px rgba(188, 140, 255, 0.6);
    filter: brightness(1.1);
}

.share-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    color: white;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.share-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.container {
    width: 95%;
    max-width: 100%;
    margin: 1rem auto;
    background: rgba(22, 27, 34, 0.85);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    box-sizing: border-box;
    backdrop-filter: blur(8px);
}

.header-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.file-input-wrapper {
    background: var(--bg);
    padding: 15px 25px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.tabs-nav {
    display: flex;
    gap: 15px;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
}

.tab-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 10px 25px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s;
    text-transform: uppercase;
    font-size: 0.85rem;
}

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

.error {
    color: var(--danger);
    background: rgba(248, 81, 73, 0.1);
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid var(--danger);
    margin-top: 1rem;
    font-family: monospace;
}

.explorer-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    min-height: 500px;
}

.main-content-area {
    min-width: 0;
}

.sidebar {
    background: rgba(13, 17, 23, 0.7);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    height: fit-content;
    backdrop-filter: blur(4px);
}

.sidebar h3 {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0;
    text-transform: uppercase;
}

.sidebar-header {
    margin-bottom: 15px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.search-input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 4px;
    margin-top: 10px;
    font-size: 0.85rem;
    box-sizing: border-box;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    padding: 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255,255,255,0.02);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-item.has-data { color: var(--success); font-weight: 600; }
.table-item.no-data { color: var(--text-muted); opacity: 0.7; }
.view-item { color: var(--accent); font-style: italic; }

.table-count {
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 8px;
    border-radius: 10px;
    color: var(--primary);
}

.sidebar li:hover {
    background: rgba(88, 166, 255, 0.1);
    color: var(--primary);
    padding-left: 18px;
}

.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0 5px;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-info {
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--text-muted);
}

.btn-sm:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.export-btns {
    display: flex;
    gap: 8px;
}

.btn-sm {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: bold;
    transition: all 0.2s;
}

.btn-sm:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.sql-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.history-select {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    max-width: 300px;
}

textarea {
    width: 100%;
    height: 180px;
    background: var(--bg);
    color: var(--accent);
    font-family: 'Fira Code', monospace;
    padding: 1.2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 1rem;
    box-sizing: border-box;
    font-size: 1rem;
}

.ddl-container {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
}

.ddl-code {
    background: #000;
    color: var(--accent);
    padding: 1.5rem;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    border: 1px solid rgba(188, 140, 255, 0.2);
}

.results {
    margin-top: 1.5rem;
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    max-width: 100%;
    background: rgba(13, 17, 23, 0.7);
    backdrop-filter: blur(4px);
}

.docs-section {
    padding: 1rem;
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.docs-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.docs-card h3 {
    margin-top: 0;
    color: var(--primary);
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.docs-card ul {
    padding-left: 20px;
}

.docs-card li {
    margin-bottom: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg);
    white-space: nowrap;
}

th, td {
    border: 1px solid var(--border);
    padding: 12px 15px;
    text-align: left;
    font-size: 0.85rem;
}

th {
    background: rgba(88, 166, 255, 0.08);
    color: var(--primary);
    cursor: pointer;
}

.fk-cell {
    color: var(--accent);
    text-decoration: underline;
    cursor: pointer;
}

.btn-sm.btn-accent { background: var(--accent); color: white; border-color: var(--accent); }
.btn-sm.btn-save { background: var(--success); color: white; border-color: var(--success); }
.btn-delete { color: var(--danger); background: transparent; border: none; cursor: pointer; }

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.02);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.promotion-banner {
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.1), rgba(188, 140, 255, 0.1));
    padding: 3rem;
    border-radius: 15px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.cta-button {
    background: var(--primary);
    color: white;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

.footer {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--card-bg);
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-links a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
}

.docs-card code { background: rgba(88, 166, 255, 0.1); padding: 2px 4px; border-radius: 4px; font-family: monospace; color: var(--primary); }

.import-progress-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1rem 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.import-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: bold;
    color: var(--primary);
}

.progress-bar-bg {
    background: var(--bg);
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border);
}

.progress-bar-fill {
    background: linear-gradient(90deg, var(--primary), var(--accent));
    height: 100%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(88, 166, 255, 0.5);
}

.import-stats {
    color: var(--text-muted);
    text-align: right;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.import-errors {
    margin-top: 1rem;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    max-height: 150px;
    overflow-y: auto;
}

.import-errors .error-msg {
    color: var(--danger);
    font-size: 0.85rem;
    padding: 4px 0;
    font-family: monospace;
    border-bottom: 1px solid rgba(248, 81, 73, 0.1);
}

.close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    color: var(--text);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.8rem;
}

.close-btn:hover {
    background: var(--danger);
    border-color: var(--danger);
    transform: rotate(90deg);
}

.pending-row {
    background: rgba(88, 166, 255, 0.15) !important;
}

.cell-error {
    background: rgba(248, 81, 73, 0.2) !important;
    border: 1px solid var(--danger) !important;
    outline: none;
}

.cell-error:focus {
    box-shadow: 0 0 0 2px var(--danger);
}

/* Dropdown styles for database download */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-bg);
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.5);
    z-index: 1000;
    border: 1px solid var(--border);
    border-radius: 4px;
    right: 0;
}

.dropdown-content a {
    color: var(--text);
    padding: 10px 14px;
    text-decoration: none;
    display: block;
    font-size: 0.8rem;
    transition: background 0.2s;
}

.dropdown-content a:hover {
    background-color: var(--primary);
    color: white;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown:hover .btn-sm {
    border-color: var(--primary);
    color: var(--primary);
}

.table-schema-mini {
    margin-bottom: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.table-schema-mini summary {
    padding: 10px 15px;
    cursor: pointer;
    background: rgba(88, 166, 255, 0.05);
    font-weight: bold;
    color: var(--primary);
    font-size: 0.9rem;
}

.table-schema-mini summary:hover {
    background: rgba(88, 166, 255, 0.1);
}

.schema-mini-content {
    padding: 1rem;
    border-top: 1px solid var(--border);
}

.ddl-code-mini {
    background: #000;
    color: var(--accent);
    padding: 1rem;
    border-radius: 6px;
    margin-top: 1rem;
    font-size: 0.8rem;
    font-family: 'Fira Code', monospace;
    white-space: pre-wrap;
    border: 1px solid rgba(188, 140, 255, 0.1);
}

.btn-delete:hover {
    background: var(--danger) !important;
    color: white !important;
    border-color: var(--danger) !important;
}

.filter-row th {
    padding: 4px !important;
}

.filter-row input {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border);
    color: var(--primary);
    padding: 4px 8px;
    font-size: 0.75rem;
    border-radius: 4px;
    box-sizing: border-box;
}

.settings-section {
    padding: 1rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.setting-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.setting-card label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(35, 134, 54, 0.95);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: bold;
    z-index: 10000;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    animation: slideUp 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
    pointer-events: none;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
}

@keyframes slideUp {
    from { bottom: -50px; opacity: 0; }
    to { bottom: 30px; opacity: 1; }
}

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

/* Drop Zone Main */
.drop-zone-main {
    background: rgba(88, 166, 255, 0.03);
    border: 2px dashed var(--border);
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.drop-zone-main:hover {
    background: rgba(88, 166, 255, 0.08);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.drop-zone-content svg {
    color: var(--primary);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.drop-zone-main:hover .drop-zone-content svg {
    opacity: 1;
    transform: scale(1.1);
}

.drop-zone-content h3 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text);
}

.drop-zone-content p {
    margin: 0;
    color: var(--text-muted);
}

/* SQL Tab Extensions */
.perf-timer {
    background: rgba(88, 166, 255, 0.1);
    color: var(--primary);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-family: monospace;
}

.sql-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

.history-select {
    max-width: 400px;
}

/* Smart Cell Rendering */
.cell-image-preview {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.cell-image-preview img {
    max-width: 100px;
    max-height: 100px;
    border-radius: 4px;
    border: 1px solid var(--border);
    object-fit: contain;
}

.cell-image-preview span {
    font-size: 0.7rem;
    color: var(--text-muted);
    word-break: break-all;
}

.cell-json-preview {
    max-width: 300px;
    max-height: 150px;
    overflow: auto;
    background: rgba(0,0,0,0.3);
    border-radius: 4px;
    padding: 8px;
    border: 1px solid rgba(188, 140, 255, 0.2);
}

.cell-json-preview pre {
    margin: 0;
    font-size: 0.75rem;
    color: var(--accent);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 11000;
    backdrop-filter: blur(5px);
}

.modal-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    width: 400px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.modal-form label {
    display: block;
    margin-top: 1rem;
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--text-muted);
}

.modal-form input[type="text"], .modal-form select {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: white;
    padding: 10px;
    border-radius: 6px;
    box-sizing: border-box;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.modal-actions button {
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    border: 1px solid var(--border);
}

.modal-actions .btn-save {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.modal-actions .btn-delete {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}