@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Color Palette - Modern Dark Theme */
    --primary-color: #4a90e2;       /* A modern, friendly blue */
    --primary-color-dark: #357abd;
    --success-color: #50e3c2;       /* A vibrant mint green */
    --success-color-dark: #38a89d;
    --info-color: #9b59b6;          /* A soft purple */
    --info-color-dark: #8e44ad;
    --danger-color: #e74c3c;        /* A clear, modern red */
    --danger-color-dark: #c0392b;

    --bg-color-primary: #1a1d24;    /* Main background - very dark blue/grey */
    --bg-color-secondary: #282c34;  /* Card and panel backgrounds */
    --bg-color-tertiary: #3a3f4b;   /* Hover and accent backgrounds */
    
    --text-color-primary: #f0f4f8;  /* Primary text - off-white */
    --text-color-secondary: #a9b4c4;/* Secondary text - light grey */
    --text-color-muted: #778899;    /* Muted/placeholder text */
    
    --border-color: #444a5b;        /* Borders */

    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-mono: 'Fira Code', 'Courier New', Courier, monospace;
    --font-size-base: 12px;
    --line-height-base: 12px;

    /* Spacing */
    --spacing-xs: 1px;
    --spacing-sm: 2px;
    --spacing-md: 3px;
    --spacing-lg: 4px;
    --spacing-xl: 5px;
    --spacing-xxl: 6px;

    /* Borders and Shadows */
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    --box-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --box-shadow-md: 0 5px 15px rgba(0, 0, 0, 0.2);
    --box-shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Global Box Sizing */
*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0px;
}

p {
    font-size: 12px;
}

ul {
    padding: 0px;
}

/* Base styles */
body {
    font-family: var(--font-family-sans);
    margin: 0;
    padding: 0;
    background-color: var(--bg-color-primary);
    color: var(--text-color-primary);
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-xl);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
}

.header h1 {
    font-size: 12px;
    color: var(--text-color-primary);
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Buttons */
.button {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-fast);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transform: translateY(0);
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-md);
}

.button.primary {
    background: linear-gradient(45deg, var(--primary-color), var(--primary-color-dark));
    color: #fff;
}

.button.primary:hover {
    background: linear-gradient(45deg, var(--primary-color-dark), var(--primary-color));
}

.button.success {
    background: linear-gradient(45deg, var(--success-color), var(--success-color-dark));
    color: #fff;
}

.button.success:hover {
    background: linear-gradient(45deg, var(--success-color-dark), var(--success-color));
}

.button.info {
    background: linear-gradient(45deg, var(--info-color), var(--info-color-dark));
    color: #fff;
}

.button.info:hover {
    background: linear-gradient(45deg, var(--info-color-dark), var(--info-color));
}

.button:disabled {
    background: var(--bg-color-tertiary);
    color: var(--text-color-muted);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Dashboard Layout */
.dashboard-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
        "header header"
        "sidebar main"
        "footer footer";
    height: 100vh;
    background-color: var(--bg-color-primary);
}

.dashboard-header {
    grid-area: header;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--bg-color-secondary);
    border-bottom: 1px solid var(--border-color);
}

.dashboard-header h1 {
    font-size: 12px;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

.dashboard-sidebar {
    grid-area: sidebar;
    background-color: var(--bg-color-secondary);
    padding: var(--spacing-xl);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.sidebar-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-color-primary);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.dashboard-main {
    grid-area: main;
    padding: var(--spacing-xl);
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    grid-auto-rows: min-content;
    gap: var(--spacing-xl);
}

.dashboard-footer {
    grid-area: footer;
    background-color: var(--bg-color-secondary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.card {
    background-color: var(--bg-color-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

h1, h2, h3, h4 {
    color: var(--text-color-primary);
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

h1 { font-size: 12px; } /* 27px */
h2 { font-size: 12px; } /* 21px */
h3 { font-size: 12px; } /* 15px */
h4 { font-size: 12px; }  /* 12px */

h2, h3 {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.section {
    margin-bottom: var(--spacing-xl);
}

/* Upload Section */
.upload-section {
    position: relative;
}

.upload-section .button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    width: 100%;
}

.upload-icon {
    transition: var(--transition-fast);
}

.upload-section .button:hover .upload-icon {
    transform: translateY(-2px);
}

.upload-section input[type="file"] {
    /* Hide the default input but keep it accessible */
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-name-display {
    display: block;
    margin-top: var(--spacing-md);
    font-size: 12px;
    color: var(--text-color-muted);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 12px;
}

/* Table List */
.table-list {
    margin-top: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color-primary);
}

.table-list-container {
    flex-grow: 1;
    overflow-y: auto;
    margin-top: var(--spacing-lg);
    border: none;
    background-color: transparent;
}

.table-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.table-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: transparent;
    color: var(--text-color-secondary);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    border-radius: var(--border-radius-md);
    position: relative;
}

.table-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background-color: var(--primary-color);
    border-radius: 3px;
    transition: height 0.2s ease;
}

.table-list li:hover {
    background-color: var(--bg-color-tertiary);
    color: var(--text-color-primary);
}

.table-list li:hover .delete-btn {
    opacity: 1;
    transform: scale(1);
}

.table-list li.selected {
    background-color: var(--bg-color-tertiary);
    color: #fff;
    font-weight: 500;
}

.table-list li.selected::before {
    height: 60%;
}

.table-list li.selected .table-icon,
.table-list li.selected .table-name {
    color: var(--primary-color);
}

.table-list li .delete-btn {
    background: none;
    border: none;
    color: var(--text-color-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    opacity: 0;
    transform: scale(0.9);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.table-list li .delete-btn:hover {
    color: var(--danger-color);
    background-color: rgba(231, 76, 60, 0.1);
}

.table-item-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.table-icon {
    color: var(--text-color-muted);
    transition: var(--transition-fast);
}

.table-name {
    transition: var(--transition-fast);
}

.placeholder-text {
    color: var(--text-color-muted);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-xl);
    font-size: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    height: 100%;
}

.placeholder-text svg {
    width: 48px;
    height: 48px;
    stroke-width: 1.5;
}

.table-list-skeleton {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skeleton-item {
    height: 40px;
    background-color: var(--bg-color-tertiary);
    border-radius: var(--border-radius-md);
    animation: pulse 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: .5;
    }
}

.delete-confirm-container {
    display: flex;
    gap: var(--spacing-sm);
}

.confirm-delete-btn, .cancel-delete-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: 12px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.confirm-delete-btn {
    background-color: var(--danger-color);
    color: white;
}

.confirm-delete-btn:hover {
    background-color: var(--danger-color-dark);
}

.cancel-delete-btn {
    background-color: var(--bg-color-tertiary);
    color: var(--text-color-secondary);
}

.cancel-delete-btn:hover {
    background-color: #555;
}

.table-list li.deleting {
    background-color: rgba(231, 76, 60, 0.1);
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 1;
    transform: scale(1);
}

.table-list li.fading-out {
    opacity: 0;
    transform: scale(0.95);
}

/* DataTables styles */
.dt-container {
    width: 100%;
    color: var(--text-color-secondary);
}

.dt-layout-row {
    padding: var(--spacing-sm) 0;
}

.dt-search input, .dt-length select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color-primary);
    color: var(--text-color-primary);
}

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

.dt-table th, .dt-table td {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    text-align: left;
}

.dt-table th {
    background-color: var(--bg-color-tertiary);
    font-weight: 600;
    color: var(--text-color-primary);
}

.dt-table tbody tr {
    background-color: var(--bg-color-secondary);
}

.dt-table tbody tr:hover {
    background-color: var(--bg-color-tertiary);
}

/* Viewer Section */
.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.viewer-header h2 {
    border-bottom: none;
    padding-bottom: 0;
}

.viewer-actions {
    display: flex;
    gap: var(--spacing-md);
}

.progress-tracker, .ai-suggestions-container {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color-primary);
}

.ai-suggestions-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
}

.ai-suggestion-card {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
    background-color: var(--bg-color-secondary);
    color: var(--text-color-secondary);
}

.ai-suggestion-card:hover {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color-dark);
}

.main-content-area {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color-primary);
    margin-top: var(--spacing-lg);
}

.report-container {
    display: none;
    grid-template-areas:
        "summary chart"
        "table table";
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

.report-summary-card, .report-chart-card, .report-table-card {
    background-color: var(--bg-color-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-sm);
}

.report-summary-card { grid-area: summary; }
.report-chart-card { grid-area: chart; }
.report-table-card { grid-area: table; }

.report-summary-card h3, .report-chart-card h3, .report-table-card h3 {
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-md);
}

.report-summary-card p {
    line-height: 1.7;
    color: var(--text-color-secondary);
}

.report-chart-container {
    flex-grow: 1;
    position: relative;
    width: 100%;
    min-height: 350px;
}

/* KPI Cards */
.kpi-container {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.kpi-card {
    background-color: var(--bg-color-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.kpi-card__title {
    font-size: 12px;
    color: var(--text-color-secondary);
    margin-bottom: var(--spacing-sm);
}

.kpi-card__value {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-color-primary);
}

/* Chart Container */
.chart-container {
    grid-column: 1 / -1;
    min-height: 400px;
}

/* Datatable Container */
.datatable-container {
    grid-column: 1 / -1;
}

/* Debug Log */
.debug-log-container {
    color: var(--text-color-primary);
}

.debug-log {
    background-color: var(--bg-color-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    height: 111px;
    overflow-y: auto;
    font-family: var(--font-family-mono);
    font-size: 12px;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Settings Panel */
.settings-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.settings-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.settings-panel {
    position: fixed;
    top: 0;
    right: 0;
    height: 100%;
    width: 450px;
    background-color: var(--bg-color-secondary);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    transform: translateX(0);
    transition: transform 0.3s ease-in-out;
    border-left: 1px solid var(--border-color);
}

.settings-panel.translate-x-full {
    transform: translateX(100%);
}

.settings-panel-content {
    padding: var(--spacing-xl);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.close-button {
    background: none;
    border: none;
    font-size: 12px;
    line-height: 1;
    color: var(--text-color-muted);
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-button:hover {
    color: var(--text-color-primary);
    transform: rotate(90deg);
}

.settings-form {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    margin-top: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.api-key-description {
    font-size: 12px;
    color: var(--text-color-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.input-group {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color-primary);
    transition: var(--transition-fast);
}

.input-group:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.3);
}

.input-group input {
    flex-grow: 1;
    border: none;
    padding: var(--spacing-md);
    font-size: 12px;
    color: var(--text-color-primary);
    background-color: transparent;
    outline: none;
}

.toggle-visibility-btn {
    padding: 0 var(--spacing-md);
    background: none;
    border: none;
    border-left: 1px solid var(--border-color);
    color: var(--primary-color);
    cursor: pointer;
    font-weight: 600;
}

.form-actions {
    margin-top: auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.form-actions .button {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 12px;
}

/* Utility classes */
.hidden {
    display: none !important;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .header h1 { font-size: 12px; }
    h2 { font-size: 12px; }
    h3 { font-size: 12px; }
}

@media (max-width: 768px) {
    .dashboard-container {
        grid-template-columns: 1fr;
        grid-template-areas:
            "header"
            "main"
            "footer";
    }

    .dashboard-sidebar {
        display: none; /* Or handle with a toggle button */
    }

    .settings-panel {
        width: 100%;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* Feedback Mechanisms */
.loader {
    border: 4px solid var(--bg-color-tertiary);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.message {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    color: #fff;
}

.message.error { background-color: var(--danger-color); }
.message.success { background-color: var(--success-color); }