/* style.css */

:root {
    /* Light chat theme variables */
    --bg-page: #d1d7db;
    --bg-app: #efeae2; /* Classic chat background */
    --bg-header: #f0f2f5;
    --border-color: #d1d7db;
    
    --text-primary: #111b21;
    --text-secondary: #54656f;
    --text-muted: #667781;
    
    --accent-color: #cc2d2d; /* Royal Enfield Red */
    --accent-hover: #b02626;
    
    --user-msg-bg: #dcf8c6; /* Classic user green */
    --model-msg-bg: #ffffff; /* Bot white */
        
    --font-sans: 'Assistant', sans-serif;
    --font-mono: 'Assistant', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-sans);
    height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.app-container {
    width: 100%;
    max-width: 100%;
    height: 100dvh;
    background-color: var(--bg-app);
    display: flex;
    flex-direction: column;
}

/* Desktop layout constraint */
@media (min-width: 768px) {
    .app-container, .viewer-container {
        max-width: 900px;
        height: 95vh;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    }
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-header);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Header Avatar */
.brand-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: contain; 
    background-color: #fff;
    border: none;
    padding: 2px;
}

.brand h1 {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.user-identifier {
    display: flex;
    align-items: center;
    gap: 10px;
}

.lang-select {
    background-color: #fff;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-family: var(--font-sans);
    outline: none;
    cursor: pointer;
}

.lang-select:focus {
    border-color: var(--accent-color);
}

/* Chat Area */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-app);
}

.chat-container::before {
    content: "";
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    
    background-image: url('motorcycle-pattern.png'); /* Replace with your pattern image */
    background-repeat: repeat;
    background-size: 550px;
    opacity: 0.08; 
    z-index: 0;
}

.chat-history {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    z-index: 1
}

/* Base Message Style */
.message {
    display: flex;
    max-width: 85%;
    gap: 8px;
    align-items: flex-start;
}

.msg-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    background-color: #fff;
    border: none; 
    object-fit: contain; 
    padding: 2px; 
}

.msg-content {
    padding: 8px 12px;
    font-size: 0.95rem;
    line-height: 1.4;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    position: relative;
}

.msg-content p {
    white-space: pre-wrap;
    margin-bottom: 4px;
}

.timestamp {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: right;
    margin-top: 4px;
}

/* User Message (Right aligned, Green) */
.user-msg {
    align-self: flex-end;
    flex-direction: row-reverse; /* Avatar on the right */
}

.user-msg .msg-content {
    background-color: var(--user-msg-bg);
    border-radius: 12px;
    border-start-end-radius: 0;
}

/* Model/System Message (Left aligned, White) */
.model-msg, .system-msg {
    align-self: flex-start;
}

.model-msg .msg-content, .system-msg .msg-content {
    background-color: var(--model-msg-bg);
    border-radius: 12px;
    border-start-start-radius: 0;
}

/* Input Area */
.input-container {
    padding: 0.8rem 1rem;
    background-color: var(--bg-header);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
}

#chat-form {
    display: flex;
    gap: 8px;
    align-items: center;
}

#user-input {
    flex: 1;
    background-color: #fff;
    color: var(--text-primary);
    border: 1px solid #fff;
    border-radius: 24px;
    padding: 0.8rem 1.2rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    transition: border-color 0.2s;
}

#user-input:focus {
    border-color: var(--accent-color);
}

#send-btn {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: background-color 0.2s, opacity 0.2s;
    flex-shrink: 0;
}

#send-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    transition: transform 0.2s;
}

[dir="rtl"] #send-btn svg:not(.spinner-icon) {
    transform: scaleX(-1);
}

#send-btn:hover {
    background-color: var(--accent-hover);
}

#send-btn:disabled {
    background-color: var(--text-muted);
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner-icon {
    display: none;
    animation: spin 1s linear infinite;
}

#send-btn.loading .send-icon {
    display: none;
}

#send-btn.loading .spinner-icon {
    display: block;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Hide the old text labels */
.sender {
    display: none;
}

.viewer-container {
    width: 100%;
    max-width: 100%;
    height: 100dvh;
    background-color: var(--bg-app);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.viewer-body {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.bike-info-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-header);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.6rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.bike-icon {
    font-size: 1.2rem;
}

.bike-model-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.bike-model-name {
    color: var(--accent-color);
    font-weight: 700;
}

.viewer-msg-box {
    background-color: var(--model-msg-bg);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    line-height: 1.7;
    white-space: pre-wrap;
    font-size: 1rem;
    color: var(--text-primary);
}

.cite-link {
    color: var(--accent-color);
    background: rgba(204, 45, 45, 0.08);
    padding: 2px 8px;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 0 2px;
    border: 1px solid rgba(204, 45, 45, 0.2);
    transition: all 0.2s ease;
}

.cite-link:hover {
    background: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

.pdf-section {
    display: none;
    background-color: #ffffff;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
}

.pdf-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.pdf-header h3 {
    font-size: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pdf-badge {
    background-color: var(--accent-color);
    color: #ffffff;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 700;
}

.pdf-subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.pdf-iframe {
    width: 100%;
    height: 600px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: #f8f9fa;
}

.loading-state {
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
}