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Chatbot UI: improve conversation flow with auto-scroll and scroll-to-bottom button #699

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Chatbot UI: improve conversation flow with auto-scroll and scroll-to-bottom button #699

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af1a6a1
fix(chatbot): confine scroll to message area and stabilize input
PRAteek-singHWY Jan 3, 2026
3585004
Merge branch 'main' into fix/chat-responsive-layout
PRAteek-singHWY Jan 3, 2026
473cf30
Merge branch 'main' into fix/chat-responsive-layout
PRAteek-singHWY Jan 3, 2026
2dca1e9
feat(chat): improve UX with auto-scroll, scroll-to-bottom button, and…
PRAteek-singHWY Jan 5, 2026
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278 changes: 262 additions & 16 deletions application/frontend/src/pages/chatbot/chatbot.scss
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Original file line number Diff line number Diff line change
@@ -1,19 +1,102 @@
/* =========================
Chat container & layout
========================= */

.chat-container {
margin-top: 1.25rem;
max-width: 960px;
margin: 3rem auto;
margin-top: 1.5rem;
max-width: 960px;
display: flex;
flex-direction: column;
position: relative;
}
.chat-container.chat-active {
height: calc(100vh - 179px);
overflow: hidden;
}
@media (max-width: 768px) {
.chat-container {
padding: 0 1rem;
}
}

@media (max-width: 360px) {
.chat-container {
padding: 0 0.75rem;
}
}

/* =========================
Chat messages wrapper
========================= */

.chat-messages {
display: flex;
flex-direction: column;
gap: 1.25rem;
flex: 1;
overflow-y: auto;
padding-bottom: 1rem;
scroll-behavior: smooth;

overscroll-behavior: contain;
}
h1.ui.header {

@media (max-width: 768px) {
.chat-messages {
gap: 0.75rem;
}
}

/* =========================
Header
========================= */

/* =========================
Chatbot title
========================= */

h1.ui.header.chatbot-title {
font-weight: 600;
line-height: 1.25;

/* Fluid scaling */
font-size: clamp(1.4rem, 3vw, 2.2rem);

/* Desktop spacing */
margin-top: 2rem;
margin-bottom: 1rem !important;
}

/* Tablet & below */
@media (max-width: 768px) {
h1.ui.header.chatbot-title {
margin-top: 2.75rem;
margin-bottom: 0.75rem !important;
font-size: clamp(1.35rem, 4vw, 1.8rem);
}
}

/* Very small phones */
@media (max-width: 360px) {
h1.ui.header.chatbot-title {
margin-top: 3rem; /* extra breathing room */
}
}

/* =========================
Message rows
========================= */

.chat-message {
display: flex;
gap: 1.25rem;
}

@media (max-width: 768px) {
.chat-message {
gap: 0.75rem;
}
}

.chat-message.user {
Expand All @@ -24,24 +107,56 @@ h1.ui.header {
justify-content: flex-start;
}

/* =========================
Message cards
========================= */

.message-card {
max-width: 65%;
background: #ffffff;
border-radius: 16px;
padding: 1rem 1.25rem;
box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
line-height: 1.6;
text-align: left;
line-height: 1.6 consideration;
animation: fadeInUp 0.25s ease-out;
}

/* Tablets */
@media (max-width: 1024px) {
.message-card {
max-width: 75%;
}
}

/* Mobile */
@media (max-width: 768px) {
.message-card {
max-width: 88%;
}
}

/* Very small devices */
@media (max-width: 360px) {
.message-card {
max-width: 92%;
}
}

.chat-message.user .message-card {
background: #e3f2fd;
background: #eaf4ff;
border-left: 4px solid #2185d0;
}

.chat-message.assistant .message-card {
background: #f1f8e9;
background: #f9fafb;
border-left: 4px solid #21ba45;
}

/* =========================
Message header & body
========================= */

.message-header {
display: flex;
justify-content: space-between;
Expand All @@ -61,6 +176,7 @@ h1.ui.header {

.message-body {
font-size: 0.95rem;
text-align: left;

p {
margin: 0.5rem 0;
Expand All @@ -78,6 +194,10 @@ h1.ui.header {
}
}

/* =========================
References & warnings
========================= */

.references {
margin-top: 0.75rem;
border-top: 1px solid #e0e0e0;
Expand Down Expand Up @@ -116,16 +236,34 @@ h1.ui.header {
color: #b71c1c;
}

/* =========================
Chat input
========================= */

.chat-input {
margin-top: 1.5rem;
background-color: #d3ead4;
padding: 1rem;
position: sticky;
bottom: 0;
z-index: 5;

margin-top: 1rem;
background-color: #daebdb;
// background: transparent;
border: 1px solid rgb(190, 214, 232);
padding: 0.75rem;
border-radius: 12px;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.chat-input .ui.input input {
height: 40px;
line-height: 40px;
border-radius: 10px !important;
}

/* =========================
Disclaimer
========================= */

.chatbot-disclaimer {
margin-top: 2.5rem;
font-size: 1.01rem;
Expand All @@ -136,14 +274,18 @@ h1.ui.header {
line-height: 1.6;
}

/* AI typing indicator bubble */
/* =========================
Typing indicator
========================= */

.typing-indicator {
display: flex;
gap: 0.4rem;
align-items: center;
min-height: 32px;
padding: 0.75rem 1rem;
}

.typing-indicator .dot {
width: 8px;
height: 8px;
Expand All @@ -159,15 +301,109 @@ h1.ui.header {
.typing-indicator .dot:nth-child(3) {
animation-delay: 0.4s;
}
.chat-message.user .message-card {
background: #eaf4ff;
border-left: 4px solid #2185d0;

/* =========================
Page layout overrides
========================= */

.chatbot-layout {
min-height: 100vh;
}

.chat-message.assistant .message-card {
background: #f9fafb;
border-left: 4px solid #21ba45;
@media (max-width: 768px) {
.chatbot-layout {
min-height: auto;
padding-top: 2rem;
}
}

@media (max-width: 768px) {
.chatbot-layout.ui.grid {
align-items: flex-start !important;
}
}

/* =========================
Scroll to bottom button
========================= */

.scroll-to-bottom {
position: absolute;
bottom: 160px;
left: 50%;
transform: translateX(-50%);
z-index: 10;
width: 34px;
height: 34px;
border-radius: 50%;
border: none;
background: rgb(47, 128, 189);
color: #c5f0c9;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
border: #1976d2;
opacity: 1;
backdrop-filter: none;
transition: transform 0.2s ease;
animation: fadeIn 0.15s ease-out;
}

.scroll-to-bottom:hover {
opacity: 1;
transform: translateX(-50%) translateY(-2px);
}
.scroll-icon {
margin: 0 !important;
display: flex !important;
align-items: center;
justify-content: center;
}

@media (max-width: 768px) {
.scroll-to-bottom {
bottom: 160px;
}
}
.chat-surface {
display: flex;
flex-direction: column;
height: 100%;

background: #fcfcfa; // same palette as input
backdrop-filter: blur(6px);

border-radius: 18px;
border: 1px solid rgba(0, 0, 0, 0.05);

box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4);

padding: 1.25rem;
}
.chat-landing-state {
text-align: center;
margin: auto;
padding: 3rem 1rem;

h2 {
font-size: 1.6rem;
font-weight: 600;
margin-bottom: 0.5rem;
}

p {
font-size: 0.95rem;
color: #555;
max-width: 480px;
margin: 0 auto;
}
}
/* =========================
Animations
========================= */

@keyframes typingBounce {
0%,
80%,
Expand All @@ -191,3 +427,13 @@ h1.ui.header {
transform: translateY(0);
}
}
@keyframes fadeIn {
from {
opacity: 0;
transform: translateX(-50%) translateY(6px);
}
to {
opacity: 0.85;
transform: translateX(-50%) translateY(0);
}
}
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