Create styles.css

styles.css

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+/* Style only the top-level app title to avoid affecting headings elsewhere */
+.app-title {
+    text-align: center;
+    /* Ensure main title appears first, then our two subtitle lines */
+    display: grid;
+    justify-items: center;
+}
+.app-title::after {
+    grid-row: 2;
+    content: "General purpose tools useful for any agent.";
+    display: block;
+    font-size: 1rem;
+    font-weight: 400;
+    opacity: 0.9;
+    margin-top: 2px;
+    white-space: pre-wrap;
+}
+
+/* Sidebar Container */
+.app-sidebar {
+    background-color: rgba(255, 255, 255, 0.02) !important;
+    border-right: 1px solid rgba(255, 255, 255, 0.08) !important;
+}
+@media (prefers-color-scheme: light) {
+    .app-sidebar {
+        background-color: rgba(0, 0, 0, 0.02) !important;
+        border-right: 1px solid rgba(0, 0, 0, 0.08) !important;
+    }
+}
+
+/* Historical safeguard: if any h1 appears inside tabs, don't attach pseudo content */
+.gradio-container [role="tabpanel"] h1::before,
+.gradio-container [role="tabpanel"] h1::after {
+    content: none !important;
+}
+
+/* Information accordion - modern info cards */
+.info-accordion { 
+    margin: 8px 0 2px;
+}
+.info-grid {
+    display: grid;
+    gap: 12px;
+    /* Force a 2x2 layout on medium+ screens */
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    align-items: stretch;
+}
+/* On narrow screens, stack into a single column */
+@media (max-width: 800px) {
+    .info-grid {
+        grid-template-columns: 1fr;
+    }
+}
+.info-card {
+    display: flex;
+    gap: 14px;
+    padding: 14px 16px;
+    border: 1px solid rgba(255, 255, 255, 0.08);
+    background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03));
+    border-radius: 12px;
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
+    position: relative;
+    overflow: hidden;
+    -webkit-backdrop-filter: blur(2px);
+    backdrop-filter: blur(2px);
+}
+.info-card::before {
+    content: "";
+    position: absolute;
+    inset: 0;
+    border-radius: 12px;
+    pointer-events: none;
+    background: linear-gradient(90deg, rgba(99,102,241,0.06), rgba(59,130,246,0.05));
+}
+.info-card__icon {
+    font-size: 24px;
+    flex: 0 0 28px;
+    line-height: 1;
+    filter: saturate(1.1);
+}
+.info-card__body {
+    min-width: 0;
+}
+.info-card__body h3 {
+    margin: 0 0 6px;
+    font-size: 1.05rem;
+}
+.info-card__body p {
+    margin: 6px 0;
+    opacity: 0.95;
+}
+/* Readable code blocks inside info cards */
+.info-card pre {
+    margin: 8px 0;
+    padding: 10px 12px;
+    background: rgba(20, 20, 30, 0.55);
+    border: 1px solid rgba(255, 255, 255, 0.08);
+    border-radius: 10px;
+    overflow-x: auto;
+    white-space: pre;
+}
+.info-card code {
+    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
+    font-size: 0.95em;
+}
+.info-card pre code {
+    display: block;
+}
+.info-card p {
+    word-wrap: break-word;
+    overflow-wrap: break-word;
+}
+.info-card p code {
+    word-break: break-all;
+}
+.info-list {
+    margin: 6px 0 0 18px;
+    padding: 0;
+}
+.info-hint {
+    margin-top: 8px;
+    font-size: 0.9em;
+    opacity: 0.9;
+}
+
+/* Light theme adjustments */
+@media (prefers-color-scheme: light) {
+    .info-card {
+        border-color: rgba(0, 0, 0, 0.08);
+        background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9));
+    }
+    .info-card::before {
+        background: linear-gradient(90deg, rgba(99,102,241,0.08), rgba(59,130,246,0.06));
+    }
+    .info-card pre {
+        background: rgba(245, 246, 250, 0.95);
+        border-color: rgba(0, 0, 0, 0.08);
+    }
+}
+
+/* Sidebar Navigation - styled like the previous tabs */
+.sidebar-nav {
+    background: transparent !important;
+    border: none !important;
+    padding: 0 !important;
+}
+.sidebar-nav .form {
+    gap: 8px !important;
+    display: flex !important;
+    flex-direction: column !important;
+    border: none !important;
+    background: transparent !important;
+}
+.sidebar-nav label {
+    display: flex !important;
+    align-items: center !important;
+    padding: 10px 12px !important;
+    border-radius: 10px !important;
+    border: 1px solid rgba(255, 255, 255, 0.08) !important;
+    background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03)) !important;
+    transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .06s ease !important;
+    cursor: pointer !important;
+    margin-bottom: 0 !important;
+    width: 100% !important;
+    justify-content: flex-start !important;
+    text-align: left !important;
+}
+.sidebar-nav label:hover {
+    border-color: rgba(99,102,241,0.28) !important;
+    background: linear-gradient(180deg, rgba(99,102,241,0.10), rgba(59,130,246,0.08)) !important;
+}
+/* Selected state - Gradio adds 'selected' class to the label in some versions, or we check input:checked */
+.sidebar-nav label.selected {
+    border-color: rgba(99,102,241,0.35) !important;
+    box-shadow: inset 0 0 0 1px rgba(99,102,241,0.25), 0 1px 2px rgba(0,0,0,0.25) !important;
+    background: linear-gradient(180deg, rgba(99,102,241,0.18), rgba(59,130,246,0.14)) !important;
+    color: rgba(255, 255, 255, 0.95) !important;
+}
+
+/* Light theme adjustments for sidebar */
+@media (prefers-color-scheme: light) {
+    .sidebar-nav label {
+        border-color: rgba(0, 0, 0, 0.08) !important;
+        background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.90)) !important;
+        color: rgba(0, 0, 0, 0.85) !important;
+    }
+    .sidebar-nav label:hover {
+        border-color: rgba(99,102,241,0.25) !important;
+        background: linear-gradient(180deg, rgba(99,102,241,0.08), rgba(59,130,246,0.06)) !important;
+    }
+    .sidebar-nav label.selected {
+        border-color: rgba(99,102,241,0.35) !important;
+        background: linear-gradient(180deg, rgba(99,102,241,0.16), rgba(59,130,246,0.12)) !important;
+        color: rgba(0, 0, 0, 0.85) !important;
+    }
+}
+
+/* Hide scrollbars/arrows that can appear on the description block in some browsers */
+/* stylelint-disable compat-api/css */
+article.prose, .prose, .gr-prose {
+    overflow: visible !important;
+    max-height: none !important;
+    -ms-overflow-style: none !important; /* IE/Edge */
+    scrollbar-width: none !important; /* Firefox */
+}
+/* stylelint-enable compat-api/css */
+article.prose::-webkit-scrollbar,
+.prose::-webkit-scrollbar,
+.gr-prose::-webkit-scrollbar {
+    display: none !important;            /* Chrome/Safari */
+}
+
+/* Fix for white background on single-line inputs in dark mode */
+.gradio-container input[type="text"], 
+.gradio-container input[type="password"], 
+.gradio-container input[type="number"], 
+.gradio-container input[type="email"] {
+    background-color: var(--input-background-fill) !important;
+    color: var(--body-text-color) !important;
+}
+
+/* Custom glossy purple styling for primary action buttons */
+.gradio-container button.primary {
+    border: 1px solid rgba(99, 102, 241, 0.35) !important;
+    background: linear-gradient(180deg, rgba(99, 102, 241, 0.25), rgba(59, 130, 246, 0.20)) !important;
+    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 2px 4px rgba(0, 0, 0, 0.15) !important;
+    color: rgba(255, 255, 255, 0.95) !important;
+    transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .06s ease !important;
+}
+.gradio-container button.primary:hover {
+    border-color: rgba(99, 102, 241, 0.5) !important;
+    background: linear-gradient(180deg, rgba(99, 102, 241, 0.35), rgba(59, 130, 246, 0.28)) !important;
+    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 3px 6px rgba(0, 0, 0, 0.2) !important;
+}
+.gradio-container button.primary:active {
+    transform: scale(0.98) !important;
+    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.1) !important;
+}
+@media (prefers-color-scheme: light) {
+    .gradio-container button.primary {
+        border-color: rgba(99, 102, 241, 0.4) !important;
+        background: linear-gradient(180deg, rgba(99, 102, 241, 0.85), rgba(79, 70, 229, 0.75)) !important;
+        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 2px 4px rgba(0, 0, 0, 0.12) !important;
+        color: rgba(255, 255, 255, 0.98) !important;
+    }
+    .gradio-container button.primary:hover {
+        background: linear-gradient(180deg, rgba(99, 102, 241, 0.95), rgba(79, 70, 229, 0.85)) !important;
+        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 3px 6px rgba(0, 0, 0, 0.15) !important;
+    }
+}
+
+/* Hide the actual tabs since we use the sidebar to control them */
+.hidden-tabs .tab-nav,
+.hidden-tabs [role="tablist"] {
+    display: none !important;
+}
+/* Hide the entire first row of the tabs container (contains tab buttons + overflow) */
+.hidden-tabs > div:first-child {
+    display: none !important;
+}
+/* Ensure audio component buttons remain visible - they're inside tab panels, not the first row */
+.hidden-tabs [role="tabpanel"] button {
+    display: inline-flex !important;
+}
+
+/* Custom scrollbar styling - Progressive enhancement, falls back to default scrollbars */
+/* stylelint-disable compat-api/css */
+* {
+    scrollbar-width: thin;
+    scrollbar-color: rgba(61, 212, 159, 0.4) rgba(255, 255, 255, 0.05);
+}
+*::-webkit-scrollbar {
+    width: 8px;
+    height: 8px;
+}
+*::-webkit-scrollbar-track {
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: 4px;
+}
+*::-webkit-scrollbar-thumb {
+    background: linear-gradient(180deg, rgba(61, 212, 159, 0.5), rgba(17, 186, 136, 0.4));
+    border-radius: 4px;
+    border: 1px solid rgba(119, 247, 209, 0.2);
+}
+*::-webkit-scrollbar-thumb:hover {
+    background: linear-gradient(180deg, rgba(85, 250, 192, 0.7), rgba(65, 184, 131, 0.6));
+}
+*::-webkit-scrollbar-corner {
+    background: rgba(255, 255, 255, 0.05);
+}
+@media (prefers-color-scheme: light) {
+    * {
+        scrollbar-color: rgba(61, 212, 159, 0.4) rgba(0, 0, 0, 0.05);
+    }
+    *::-webkit-scrollbar-track {
+        background: rgba(0, 0, 0, 0.05);
+    }
+    *::-webkit-scrollbar-thumb {
+        background: linear-gradient(180deg, rgba(61, 212, 159, 0.5), rgba(17, 186, 136, 0.4));
+        border-color: rgba(0, 0, 0, 0.1);
+    }
+    *::-webkit-scrollbar-thumb:hover {
+        background: linear-gradient(180deg, rgba(85, 250, 192, 0.7), rgba(65, 184, 131, 0.6));
+    }
+    *::-webkit-scrollbar-corner {
+        background: rgba(0, 0, 0, 0.05);
+    }
+}
+/* stylelint-enable compat-api/css */