/* === Pure-black overlay ============================================== */
/* Overrides the default theme.css gradients with a flat #000000
 * background. No purple wash, no radial glows. Text stays light. */

:root {
    --bg-primary: #000000;
    --bg-secondary: rgba(15, 15, 15, 0.85);
    --bg-glass: rgba(20, 20, 20, 0.55);
    --border-glass: rgba(255, 255, 255, 0.10);
    --text-primary: #FFFFFF;
    --text-secondary: #9CA3AF;
}

.stApp {
    background: #000000 !important;
    background-image: none !important;
}

section[data-testid="stSidebar"] {
    background: #050505 !important;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
}

/* Soften the panel glow tint that the base theme bakes in. */
div[data-testid="stVerticalBlock"] > div[data-testid="stVerticalBlockBorderWrapper"] {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.07);
    box-shadow: none;
}

.tr-header {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.7) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.tr-demo-card {
    background: rgba(15, 15, 15, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.tr-pipeline {
    background: rgba(15, 15, 15, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.07);
}
.tr-pipe-source {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.10);
}
.tr-pipe-model {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
    color: #E5E7EB;
}
.tr-pipe-fuse {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.10);
    color: #E5E7EB;
}
.tr-step-text u {
    border-bottom-color: rgba(255, 255, 255, 0.35);
    color: #E5E7EB;
}