/* ─── SQL AI 2.0 — Design System ─────────────────────────── */

/* Grid background */
.bg-grid {
    background-image:
        linear-gradient(to right, rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 48px 48px;
}
.dark .bg-grid {
    background-image:
        linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
}

/* Radial fade on grid */
.bg-grid-fade {
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, black 40%, transparent 100%);
    mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, black 40%, transparent 100%);
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); border-radius: 3px; }
.dark ::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.2); }
.dark ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* Code blocks */
pre code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8125rem;
    line-height: 1.7;
}

/* SQL syntax */
.sql-keyword { color: #7c3aed; font-weight: 500; }
.sql-function { color: #2563eb; }
.sql-string { color: #059669; }
.sql-number { color: #d97706; }
.sql-comment { color: #9ca3af; font-style: italic; }
.dark .sql-keyword { color: #c084fc; }
.dark .sql-function { color: #60a5fa; }
.dark .sql-string { color: #86efac; }
.dark .sql-number { color: #fbbf24; }
.dark .sql-comment { color: #64748b; }

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-in { animation: fadeIn 0.35s ease-out forwards; }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-slide-up { animation: slideUp 0.5s ease-out forwards; }

@keyframes spin {
    to { transform: rotate(360deg); }
}
.animate-spin { animation: spin 1s linear infinite; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}
.animate-float { animation: float 3s ease-in-out infinite; }

/* Inputs */
input:focus, textarea:focus, select:focus { outline: none; }
textarea { field-sizing: content; min-height: 80px; }

/* File drop zone */
.drop-zone { transition: all 0.2s ease; }
.drop-zone.drag-over {
    border-color: #000;
    background: rgba(0,0,0,0.02);
}
.dark .drop-zone.drag-over {
    border-color: #fff;
    background: rgba(255,255,255,0.03);
}

/* Gradient text */
.text-gradient {
    background: linear-gradient(135deg, #000 0%, #444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.dark .text-gradient {
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

/* Glow effect for cards */
.card-glow {
    position: relative;
}
.card-glow::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, transparent, rgba(0,0,0,0.08), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}
.dark .card-glow::before {
    background: linear-gradient(135deg, transparent, rgba(255,255,255,0.06), transparent);
}

/* Mobile sidebar */
@media (max-width: 1023px) {
    #sidebar.open {
        display: flex;
        position: fixed;
        top: 57px;
        left: 0;
        bottom: 0;
        z-index: 50;
        width: 240px;
    }
}

/* Smooth transitions for dark mode */
html { transition: background-color 0.2s ease, color 0.2s ease; }

/* Badge dot */
.badge-dot::after {
    content: '';
    position: absolute;
    top: -2px; right: -2px;
    width: 8px; height: 8px;
    background: #ef4444;
    border-radius: 50%;
}