/* ============================================
   Text-to-SQL Demo — Dark Mode (Charcoal)
   ============================================ */

.gradio-container {
    max-width: 1100px !important;
    margin: 0 auto !important;
}

/* -- Header -- */
.app-header {
    text-align: center;
    padding: 1rem 0 0.25rem;
}
.app-header h1 {
    font-size: 2rem;
    font-weight: 800;
    margin: 0;
}
.app-header h1 span {
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* -- Badges -- */
.tech-badges {
    display: flex;
    justify-content: center;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin: 0.5rem 0;
}
.badge {
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid;
}
.badge-indigo  { background: #1e3a5f; color: #93c5fd; border-color: #2563eb30; }
.badge-purple  { background: #2e1065; color: #c4b5fd; border-color: #7c3aed30; }
.badge-emerald { background: #064e3b; color: #6ee7b7; border-color: #05966930; }
.badge-amber   { background: #451a03; color: #fbbf24; border-color: #d9770630; }

/* -- Pipeline strip -- */
.pipeline-strip {
    background: #111827;
    border: 1px solid #1f2937;
    border-radius: 10px;
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    flex-wrap: wrap;
    margin: 0.5rem 0 0.75rem;
}
.pipeline-strip .step {
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: 'Fira Code', monospace;
}
.pipeline-strip .step-input  { background: #1e3a5f; color: #7dd3fc; }
.pipeline-strip .step-model  { background: #2e1065; color: #c4b5fd; }
.pipeline-strip .step-struct { background: #422006; color: #fbbf24; }
.pipeline-strip .step-sql    { background: #14532d; color: #86efac; }
.pipeline-strip .arrow       { color: #4b5563; font-size: 1rem; }

/* -- SQL output -- */
.sql-output textarea {
    font-family: 'Fira Code', 'Cascadia Code', monospace !important;
    font-size: 1.1rem !important;
    background: #0a0a0f !important;
    color: #e2e8f0 !important;
    border: 1px solid #1f2937 !important;
    border-radius: 10px !important;
    padding: 1rem !important;
    line-height: 1.5 !important;
}

/* -- Decode boxes -- */
.decode-box textarea {
    font-family: 'Fira Code', monospace !important;
    font-size: 0.85rem !important;
    background: #111827 !important;
    color: #d1d5db !important;
    border: 1px solid #1f2937 !important;
    border-radius: 8px !important;
}

/* -- Generate button -- */
.generate-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%) !important;
    border: none !important;
    color: #fff !important;
    font-weight: 700 !important;
    font-size: 1rem !important;
    border-radius: 10px !important;
    min-height: 46px !important;
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.3) !important;
    transition: all 0.2s ease !important;
}
.generate-btn:hover {
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.45) !important;
}

/* -- Hint text -- */
.input-hint {
    font-size: 0.8rem;
    color: #6b7280 !important;
    margin-top: -0.3rem;
}
.input-hint code {
    background: #1f2937;
    color: #93c5fd;
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    font-size: 0.78rem;
}

/* -- Tab content cards -- */
.arch-card {
    background: #111827;
    border: 1px solid #1f2937;
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 0.75rem;
}
.arch-card h3 {
    color: #f3f4f6 !important;
    margin: 0 0 0.6rem 0;
    font-size: 1.05rem;
    font-weight: 700;
}
.arch-card p,
.arch-card li {
    color: #d1d5db !important;
    font-size: 0.92rem;
    line-height: 1.55;
}
.arch-card strong {
    color: #f3f4f6 !important;
}
.arch-card code {
    background: #1f2937;
    color: #93c5fd !important;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-family: 'Fira Code', monospace;
}
.arch-card a {
    color: #60a5fa !important;
}
.arch-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}
@media (max-width: 768px) {
    .arch-grid { grid-template-columns: 1fr; }
}

/* -- Reference table -- */
.encoding-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #1f2937;
    font-size: 0.88rem;
}
.encoding-table th {
    background: #0a0a0f;
    color: #f3f4f6 !important;
    padding: 0.6rem 0.8rem;
    text-align: left;
    font-weight: 600;
}
.encoding-table td {
    padding: 0.5rem 0.8rem;
    border-bottom: 1px solid #1f2937;
    color: #d1d5db !important;
    background: #0d1117;
}
.encoding-table tr:last-child td { border-bottom: none; }
.encoding-table tr:nth-child(even) td { background: #111827; }
.encoding-table .mono {
    font-family: 'Fira Code', monospace;
    color: #60a5fa !important;
    font-weight: 600;
}
.encoding-table strong {
    color: #f3f4f6 !important;
}

/* -- Stats cards -- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.6rem;
    margin: 0.75rem 0;
}
@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
.stat-card {
    background: #111827;
    border: 1px solid #1f2937;
    border-radius: 10px;
    padding: 0.9rem;
    text-align: center;
}
.stat-card .stat-value {
    font-size: 1.4rem;
    font-weight: 800;
    color: #60a5fa !important;
}
.stat-card .stat-label {
    font-size: 0.72rem;
    color: #6b7280 !important;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.15rem;
}

/* -- Footer -- */
.app-footer {
    text-align: center;
    padding: 1rem;
    margin-top: 0.75rem;
    border-top: 1px solid #1f2937;
    font-size: 0.8rem;
    color: #4b5563 !important;
}
.app-footer a {
    color: #60a5fa !important;
}

footer { display: none !important; }