/**
 * Census Chat Panel Styles — Terminal Theme
 *
 * ARCHITECTURE: Slide-out chat panel with FAB trigger for census dashboard.
 * WHY: Sibling to the Note Rail — uses the same Dark Roast terminal design
 *      language (term-* tokens, monospace UI chrome, gold/mint accents,
 *      sharp corners, glow box-shadows). Previously used Tailwind-flavored
 *      fallback tokens (--primary-500, --bg-primary) that don't exist
 *      anywhere else in the app and stuck out like a sore thumb.
 *
 * CONVENTION: All term-* tokens carry inline hex fallbacks — mirrors
 *      data-drawer.css (the current convention for new side panels).
 *
 * CREATED: 2026-01-08 — Census Chat Panel Feature
 * REWRITE: 2026-04-10 — Terminal theme retrofit
 */

/* =========================================================================
   FAB (Floating Action Button)
   ========================================================================= */

.chat-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 4px;
    background: var(--term-bg-surface, #13120F);
    color: var(--term-accent, #00FFD0);
    border: 1px solid var(--term-border-default, #2A2720);
    cursor: pointer;
    z-index: 1000;
    transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease, opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-fab:hover {
    border-color: var(--term-accent, #00FFD0);
    box-shadow: var(--term-glow-accent, 0 0 2px rgba(255,255,255,0.4), 0 0 8px rgba(0,255,208,0.35), 0 0 24px rgba(0,255,208,0.22));
}

.chat-fab:active {
    transform: scale(0.96);
}

.chat-fab:focus-visible {
    outline: none;
    border-color: var(--term-accent, #00FFD0);
    box-shadow: var(--term-glow-accent-intense, 0 0 4px rgba(255,255,255,0.6), 0 0 16px rgba(0,255,208,0.50), 0 0 36px rgba(0,255,208,0.30));
}

.chat-fab.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.9);
}

.chat-fab svg {
    width: 22px;
    height: 22px;
}

/* Unread badge — scarlet dot for new message */
.chat-fab-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--term-status-error, #EF4444);
    color: var(--term-bg-void, #0C0B0A);
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: 10px;
    font-weight: 600;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--term-glow-error, 0 0 8px rgba(239,68,68,0.4));
}

/* =========================================================================
   Backdrop
   ========================================================================= */

.census-chat-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 9998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.census-chat-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

/* =========================================================================
   Panel Container
   ========================================================================= */

.census-chat-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 480px;
    max-width: 100vw;
    height: 100vh;
    background: var(--term-bg-void, #0C0B0A);
    color: var(--term-fg-primary, #E8E4DC);
    font-family: var(--term-font-body, 'DM Sans', -apple-system, sans-serif);
    font-size: var(--term-text-base, 0.9375rem);
    border-left: 1px solid var(--term-border-default, #2A2720);
    box-shadow: -4px 0 32px rgba(0, 0, 0, 0.6);
    z-index: 9999;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.census-chat-panel.visible {
    transform: translateX(0);
}

.chat-panel-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

/* =========================================================================
   Header — Art Deco gold transom under the bar
   ========================================================================= */

.chat-panel-header {
    flex-shrink: 0;
    padding: var(--term-space-sm, 8px) var(--term-space-lg, 16px) var(--term-space-md, 12px);
    background: var(--term-bg-header, #0E0D0B);
    border-bottom: 1px solid var(--term-border-default, #2A2720);
    position: relative;
}

/* Gold transom line — sibling to the Note Rail header treatment */
.chat-panel-header::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(
        to right,
        transparent,
        var(--term-gold-dim, rgba(212, 168, 87, 0.35)) 30%,
        var(--term-gold-dim, rgba(212, 168, 87, 0.35)) 70%,
        transparent
    );
    pointer-events: none;
}

.chat-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--term-space-sm, 8px);
    margin-bottom: var(--term-space-xs, 4px);
}

.chat-header-controls {
    display: flex;
    align-items: center;
    gap: var(--term-space-sm, 8px);
    flex-shrink: 0;
}

/* Chart vs Writing — patient-free writing lab */
.chat-mode-segment {
    display: inline-flex;
    border: 1px solid var(--term-border-default, #2A2720);
    border-radius: 2px;
    overflow: hidden;
}

.chat-mode-btn {
    margin: 0;
    padding: 4px 10px;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: var(--term-tracking-wide, 0.05em);
    text-transform: uppercase;
    border: none;
    background: transparent;
    color: var(--term-fg-muted, #8A8278);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.chat-mode-btn + .chat-mode-btn {
    border-left: 1px solid var(--term-border-default, #2A2720);
}

.chat-mode-btn:hover {
    color: var(--term-fg-secondary, #A09888);
    background: var(--term-bg-surface, #13120F);
}

.chat-mode-btn.active {
    background: var(--term-accent-ghost, rgba(0, 255, 208, 0.08));
    color: var(--term-accent, #00FFD0);
}

.chat-mode-btn:focus-visible {
    outline: none;
    box-shadow: inset 0 0 0 1px var(--term-accent, #00FFD0);
}

.chat-panel-title {
    margin: 0;
    font-family: var(--term-font-display, 'Outfit', sans-serif);
    font-size: var(--term-text-sm, 0.8125rem);
    font-weight: 300;
    letter-spacing: var(--term-tracking-widest, 0.20em);
    text-transform: uppercase;
    color: var(--term-gold, #D4A857);
    text-shadow: 0 0 16px rgba(212, 168, 87, 0.20);
    display: flex;
    align-items: center;
    gap: var(--term-space-sm, 8px);
}

.chat-panel-title svg {
    color: var(--term-accent, #00FFD0);
    opacity: 0.85;
}

/* Prompt prefix — mirrors the note rail stage title '>' affordance */
.chat-panel-title::before {
    content: '>';
    color: var(--term-accent, #00FFD0);
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-weight: 400;
    text-shadow: 0 0 8px rgba(0, 255, 208, 0.4);
}

.chat-header-actions {
    display: flex;
    align-items: center;
    gap: var(--term-space-xs, 4px);
}

.chat-header-actions button {
    width: 30px;
    height: 30px;
    border: 1px solid var(--term-border-default, #2A2720);
    background: transparent;
    border-radius: 2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--term-fg-muted, #8A8278);
    transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.chat-header-actions button:hover {
    border-color: var(--term-accent-dim, rgba(0, 255, 208, 0.4));
    color: var(--term-accent, #00FFD0);
    box-shadow: var(--term-glow-accent-ghost, 0 0 4px rgba(0, 255, 208, 0.12), 0 0 12px rgba(0, 255, 208, 0.06));
}

.chat-header-actions button.active {
    border-color: var(--term-accent, #00FFD0);
    color: var(--term-accent, #00FFD0);
    background: var(--term-accent-ghost, rgba(0, 255, 208, 0.05));
    box-shadow: var(--term-glow-accent-ghost, 0 0 4px rgba(0, 255, 208, 0.12));
}

.chat-panel-close:hover {
    border-color: var(--term-status-error, #EF4444) !important;
    color: var(--term-status-error, #EF4444) !important;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.3) !important;
}

/* Patient context badge — monospace metadata line */
.chat-patient-context {
    display: flex;
    align-items: center;
    gap: var(--term-space-sm, 8px);
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    letter-spacing: var(--term-tracking-wide, 0.05em);
    text-transform: uppercase;
}

.chat-context-label {
    color: var(--term-fg-muted, #8A8278);
}

.chat-context-patient {
    color: var(--term-gold, #D4A857);
    background: var(--term-gold-ghost, rgba(212, 168, 87, 0.05));
    padding: 2px 8px;
    border: 1px solid var(--term-gold-dim, rgba(212, 168, 87, 0.35));
    border-radius: 2px;
    letter-spacing: var(--term-tracking-wide, 0.05em);
}

/* =========================================================================
   Body (Messages + RAG Panel)
   ========================================================================= */

.chat-panel-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    background: var(--term-bg-void, #0C0B0A);
}

.chat-panel-body.with-rag {
    /* RAG panel expands via its own width transition */
}

.chat-messages-wrapper {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--term-space-lg, 16px);
    scroll-behavior: smooth;
}

/* =========================================================================
   Welcome state + starter chips (peer register)
   ========================================================================= */

.chat-welcome {
    text-align: center;
    padding: 2.5rem var(--term-space-md, 12px) var(--term-space-lg, 16px);
    color: var(--term-fg-muted, #8A8278);
}

.chat-welcome-hint {
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    color: var(--term-fg-muted, #8A8278);
    text-transform: uppercase;
    letter-spacing: var(--term-tracking-wide, 0.05em);
    margin-bottom: var(--term-space-lg, 16px);
}

.chat-starter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--term-space-sm, 8px);
    justify-content: center;
    padding: 0 var(--term-space-sm, 8px);
}

/* Peer-register starter chip — terminal chip styling.
   Mono font, uppercase, thin border, ghost background, mint hover with glow.
   Mirrors the chip pattern in note-rail-terminal.css. */
.chat-starter-chip {
    background: transparent;
    border: 1px solid var(--term-border-default, #2A2720);
    color: var(--term-fg-secondary, #A09888);
    padding: 6px 12px;
    border-radius: 2px;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    letter-spacing: var(--term-tracking-wide, 0.05em);
    text-transform: uppercase;
    line-height: 1.3;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
    white-space: nowrap;
}

.chat-starter-chip:hover {
    border-color: var(--term-accent, #00FFD0);
    color: var(--term-accent, #00FFD0);
    background: var(--term-accent-ghost, rgba(0, 255, 208, 0.05));
    box-shadow: var(--term-glow-accent-ghost, 0 0 4px rgba(0, 255, 208, 0.12), 0 0 12px rgba(0, 255, 208, 0.06));
}

.chat-starter-chip:active {
    transform: scale(0.97);
}

.chat-starter-chip:focus-visible {
    outline: none;
    border-color: var(--term-accent, #00FFD0);
    box-shadow: var(--term-glow-accent, 0 0 2px rgba(255,255,255,0.4), 0 0 8px rgba(0,255,208,0.35), 0 0 24px rgba(0,255,208,0.22));
}

/* =========================================================================
   Messages
   ========================================================================= */

.chat-message {
    margin-bottom: var(--term-space-md, 12px);
    animation: chatSlideUp 0.25s ease;
}

.chat-message.user {
    display: flex;
    justify-content: flex-end;
}

.chat-message.assistant {
    display: flex;
    justify-content: flex-start;
}

.message-bubble {
    max-width: 88%;
    padding: var(--term-space-sm, 8px) var(--term-space-md, 12px);
    border-radius: 2px;
    word-wrap: break-word;
    line-height: 1.55;
    font-family: var(--term-font-body, 'DM Sans', sans-serif);
    font-size: var(--term-text-base, 0.9375rem);
}

.chat-message.user .message-bubble {
    background: var(--term-accent-ghost, rgba(0, 255, 208, 0.05));
    color: var(--term-fg-primary, #E8E4DC);
    border: 1px solid var(--term-accent-dim, rgba(0, 255, 208, 0.4));
    border-right: 2px solid var(--term-accent, #00FFD0);
}

.chat-message.assistant .message-bubble {
    background: var(--term-bg-surface, #13120F);
    color: var(--term-fg-primary, #E8E4DC);
    border: 1px solid var(--term-border-subtle, #1E1C18);
    border-left: 2px solid var(--term-gold-dim, rgba(212, 168, 87, 0.35));
}

.message-bubble.streaming {
    border-left-color: var(--term-accent, #00FFD0);
    box-shadow: var(--term-glow-accent-ghost, 0 0 4px rgba(0, 255, 208, 0.12), 0 0 12px rgba(0, 255, 208, 0.06));
}

/* Inline markdown — keep it minimal, terminal-flavored */
.message-bubble pre {
    background: var(--term-bg-void, #0C0B0A);
    border: 1px solid var(--term-border-subtle, #1E1C18);
    border-radius: 2px;
    padding: var(--term-space-sm, 8px) var(--term-space-md, 12px);
    margin: var(--term-space-sm, 8px) 0;
    overflow-x: auto;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    color: var(--term-accent, #00FFD0);
}

.message-bubble code {
    background: var(--term-bg-void, #0C0B0A);
    padding: 1px 6px;
    border-radius: 2px;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: 0.875em;
    color: var(--term-accent, #00FFD0);
    border: 1px solid var(--term-border-subtle, #1E1C18);
}

.message-bubble h2,
.message-bubble h3,
.message-bubble h4 {
    margin: var(--term-space-md, 12px) 0 var(--term-space-xs, 4px);
    font-family: var(--term-font-display, 'Outfit', sans-serif);
    font-weight: 500;
    color: var(--term-gold, #D4A857);
    letter-spacing: var(--term-tracking-wide, 0.05em);
}

.message-bubble ul {
    margin: var(--term-space-xs, 4px) 0;
    padding-left: var(--term-space-lg, 16px);
}

.message-bubble strong {
    color: var(--term-gold, #D4A857);
    font-weight: 600;
}

/* Typing indicator — mint dots with ghost glow */
.typing-indicator {
    display: inline-flex;
    align-items: center;
    padding: var(--term-space-sm, 8px) var(--term-space-md, 12px);
    background: var(--term-bg-surface, #13120F);
    border: 1px solid var(--term-border-subtle, #1E1C18);
    border-left: 2px solid var(--term-accent, #00FFD0);
    border-radius: 2px;
}

.typing-indicator span {
    height: 6px;
    width: 6px;
    background: var(--term-accent, #00FFD0);
    border-radius: 50%;
    display: inline-block;
    margin: 0 2px;
    animation: chatTyping 1.4s infinite;
    box-shadow: 0 0 6px rgba(0, 255, 208, 0.4);
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes chatTyping {
    0%, 60%, 100% {
        opacity: 0.4;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-5px);
    }
}

@keyframes chatSlideUp {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================================================
   RAG Panel
   ========================================================================= */

.chat-rag-panel {
    width: 0;
    overflow: hidden;
    background: var(--term-bg-surface, #13120F);
    border-left: 1px solid var(--term-border-subtle, #1E1C18);
    display: flex;
    flex-direction: column;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chat-rag-panel.expanded {
    width: 280px;
}

.chat-rag-panel.collapsed {
    width: 0;
}

.rag-panel-header {
    padding: var(--term-space-sm, 8px) var(--term-space-md, 12px);
    border-bottom: 1px solid var(--term-border-subtle, #1E1C18);
    background: var(--term-bg-header, #0E0D0B);
}

.rag-panel-header h4 {
    margin: 0;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    font-weight: 500;
    letter-spacing: var(--term-tracking-wide, 0.05em);
    text-transform: uppercase;
    color: var(--term-gold, #D4A857);
    display: flex;
    align-items: center;
    gap: var(--term-space-xs, 4px);
}

.rag-panel-header h4 svg {
    color: var(--term-gold-dim, rgba(212, 168, 87, 0.6));
}

.rag-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--term-space-sm, 8px);
}

.rag-document-item {
    background: var(--term-bg-void, #0C0B0A);
    border: 1px solid var(--term-border-subtle, #1E1C18);
    border-radius: 2px;
    padding: var(--term-space-sm, 8px) var(--term-space-md, 12px);
    margin-bottom: var(--term-space-sm, 8px);
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.rag-document-item:hover {
    border-color: var(--term-accent-dim, rgba(0, 255, 208, 0.4));
    box-shadow: var(--term-glow-accent-ghost, 0 0 4px rgba(0, 255, 208, 0.12), 0 0 12px rgba(0, 255, 208, 0.06));
}

.rag-doc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--term-space-sm, 8px);
    margin-bottom: var(--term-space-xs, 4px);
}

.rag-doc-source {
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    letter-spacing: var(--term-tracking-wide, 0.05em);
    text-transform: uppercase;
    color: var(--term-gold, #D4A857);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.rag-similarity-badge {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 2px;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.05em;
    flex-shrink: 0;
    border: 1px solid;
}

.rag-similarity-badge.high {
    color: var(--term-accent, #00FFD0);
    border-color: var(--term-accent-dim, rgba(0, 255, 208, 0.4));
    background: var(--term-accent-ghost, rgba(0, 255, 208, 0.05));
}

.rag-similarity-badge.medium {
    color: var(--term-gold, #D4A857);
    border-color: var(--term-gold-dim, rgba(212, 168, 87, 0.35));
    background: var(--term-gold-ghost, rgba(212, 168, 87, 0.05));
}

.rag-similarity-badge.low {
    color: var(--term-fg-muted, #8A8278);
    border-color: var(--term-border-default, #2A2720);
    background: transparent;
}

.rag-doc-preview {
    font-family: var(--term-font-body, 'DM Sans', sans-serif);
    font-size: var(--term-text-xs, 0.6875rem);
    color: var(--term-fg-secondary, #A09888);
    line-height: 1.5;
    margin-bottom: var(--term-space-xs, 4px);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rag-doc-meta {
    font-size: var(--term-text-xs, 0.6875rem);
}

.rag-doc-link {
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    color: var(--term-accent, #00FFD0);
    opacity: 0.75;
    letter-spacing: var(--term-tracking-wide, 0.05em);
    text-transform: uppercase;
}

.rag-empty-state {
    text-align: center;
    padding: var(--term-space-xl, 24px) var(--term-space-md, 12px);
    color: var(--term-fg-muted, #8A8278);
}

.rag-empty-state svg {
    margin-bottom: var(--term-space-sm, 8px);
    opacity: 0.4;
    color: var(--term-gold-dim, rgba(212, 168, 87, 0.5));
}

.rag-empty-state p {
    margin: 0;
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    text-transform: uppercase;
    letter-spacing: var(--term-tracking-wide, 0.05em);
    line-height: 1.5;
}

/* =========================================================================
   Footer (Input Area) — gold transom over input
   ========================================================================= */

.chat-panel-footer {
    flex-shrink: 0;
    padding: var(--term-space-md, 12px) var(--term-space-lg, 16px);
    /* ARCHITECTURE: Extra bottom padding for dictation UI compatibility */
    padding-bottom: calc(var(--term-space-md, 12px) + env(safe-area-inset-bottom, 16px));
    background: var(--term-bg-header, #0E0D0B);
    border-top: 1px solid var(--term-border-default, #2A2720);
    position: relative;
}

.chat-panel-footer::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: -1px;
    height: 1px;
    background: linear-gradient(
        to right,
        transparent,
        var(--term-gold-dim, rgba(212, 168, 87, 0.35)) 30%,
        var(--term-gold-dim, rgba(212, 168, 87, 0.35)) 70%,
        transparent
    );
    pointer-events: none;
}

.chat-input-container {
    display: flex;
    gap: var(--term-space-sm, 8px);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    resize: none;
    border: none;
    border-bottom: 2px solid var(--term-border-default, #2A2720);
    border-radius: 0;
    padding: var(--term-space-sm, 8px) var(--term-space-md, 12px);
    font-family: var(--term-font-body, 'DM Sans', sans-serif);
    font-size: var(--term-text-base, 0.9375rem);
    background: var(--term-bg-input, #17160F);
    color: var(--term-fg-primary, #E8E4DC);
    transition: border-bottom-color 0.15s ease, box-shadow 0.2s ease;
    max-height: 120px;
    line-height: 1.5;
}

.chat-input:focus {
    outline: none;
    border-bottom-color: var(--term-accent, #00FFD0);
    box-shadow: 0 4px 16px rgba(0, 255, 208, 0.10);
}

.chat-input::placeholder {
    color: var(--term-fg-muted, #8A8278);
    font-family: var(--term-font-mono, 'JetBrains Mono', monospace);
    font-size: var(--term-text-xs, 0.6875rem);
    text-transform: uppercase;
    letter-spacing: var(--term-tracking-wide, 0.05em);
}

.chat-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.chat-send-btn {
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    color: var(--term-accent, #00FFD0);
    border: 2px solid var(--term-accent, #00FFD0);
    border-radius: 2px;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    background: var(--term-accent, #00FFD0);
    color: var(--term-bg-void, #0C0B0A);
    box-shadow: var(--term-glow-accent-intense, 0 0 4px rgba(255,255,255,0.6), 0 0 16px rgba(0,255,208,0.50), 0 0 36px rgba(0,255,208,0.30));
}

.chat-send-btn:active:not(:disabled) {
    transform: scale(0.96);
}

.chat-send-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    border-color: var(--term-border-default, #2A2720);
    color: var(--term-fg-muted, #8A8278);
}

.chat-send-btn svg.spin {
    animation: chatSpin 1s linear infinite;
}

@keyframes chatSpin {
    to {
        transform: rotate(360deg);
    }
}

/* =========================================================================
   Scrollbars — thin terminal style
   ========================================================================= */

.chat-messages::-webkit-scrollbar,
.rag-panel-body::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.chat-messages::-webkit-scrollbar-track,
.rag-panel-body::-webkit-scrollbar-track {
    background: var(--term-bg-void, #0C0B0A);
}

.chat-messages::-webkit-scrollbar-thumb,
.rag-panel-body::-webkit-scrollbar-thumb {
    background: var(--term-border-default, #2A2720);
    border-radius: 0;
}

.chat-messages::-webkit-scrollbar-thumb:hover,
.rag-panel-body::-webkit-scrollbar-thumb:hover {
    background: var(--term-border-strong, #3A362C);
}

.chat-messages,
.rag-panel-body {
    scrollbar-color: var(--term-border-default, #2A2720) var(--term-bg-void, #0C0B0A);
    scrollbar-width: thin;
}

/* =========================================================================
   Responsive
   ========================================================================= */

@media (max-width: 768px) {
    .census-chat-panel {
        width: 100vw;
    }

    .chat-fab {
        bottom: 80px;
        right: 16px;
    }

    .chat-panel-footer {
        padding-bottom: calc(var(--term-space-lg, 16px) + env(safe-area-inset-bottom, 24px));
    }

    .chat-rag-panel.expanded {
        position: absolute;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 40vh;
        border-left: none;
        border-top: 1px solid var(--term-border-default, #2A2720);
    }
}