/* Scrollable Messages Canvas */
.messages-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 30px 20px 0;
    scroll-behavior: smooth;
}

/* Scrollbar styling */
.messages-wrapper::-webkit-scrollbar {
    width: 6px;
}
.messages-wrapper::-webkit-scrollbar-track {
    background: transparent;
}
.messages-wrapper::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-pill);
}
.messages-wrapper::-webkit-scrollbar-thumb:hover {
    background: rgba(56, 189, 248, 0.2);
}

.messages-container {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding-bottom: 40px;
}

/* Messages bubbles & components */
.message {
    display: flex;
    gap: 16px;
    animation: messageSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes messageSlideIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Bot message layout (transparent, flat, borderless) */
.bot-message {
    align-self: stretch;
    width: 100%;
    background-color: transparent;
    border: none;
    padding: 8px 0;
    border-radius: 0;
    box-shadow: none;
}

.bot-message .message-content {
    color: var(--text-primary);
    line-height: 1.65;
    font-size: 0.975rem;
    word-break: break-word;
    white-space: normal; /* Allow HTML tags to layout whitespace naturally */
    padding-top: 0;
    flex: 1;
}

/* Sleek organic User Message card (flat symmetric pill bubble) */
.user-message {
    flex-direction: row-reverse;
    align-self: flex-end;
    max-width: 90%; /* Widen the bubble to fill the space saved from avatar removal */
}

.user-message .message-content {
    background-color: var(--bg-input); /* Flat slate grey-blue container */
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: 24px; /* Symmetric pill shape, no unique tails */
    line-height: 1.55;
    font-size: 0.95rem;
    word-break: break-word;
    white-space: pre-wrap;
    box-shadow: none;
}

/* Message body wrapper for stacked content (reasoning + response) */
.message-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

/* Collapsible reasoning block */
.reasoning-block {
    margin-bottom: 10px;
    border-left: 2px solid var(--text-muted);
    padding-left: 12px;
}

.reasoning-header {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    user-select: none;
    padding: 2px 0;
    transition: color 0.2s;
}

.reasoning-header:hover {
    color: var(--text-secondary);
}

.reasoning-chevron {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
    flex-shrink: 0;
}

.reasoning-block.collapsed .reasoning-chevron {
    transform: rotate(-90deg);
}

.reasoning-block.collapsed .reasoning-content {
    display: none;
}

.reasoning-content {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.55;
    white-space: pre-wrap;
    margin-top: 6px;
    font-style: italic;
}

/* Streaming message cursor animation */
.message-content.streaming::after {
    content: '';
    display: inline-block;
    width: 2px;
    height: 1em;
    background-color: var(--accent-color);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink-cursor 0.8s step-end infinite;
}

@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ==========================================================================
   Typing Indicator
   ========================================================================== */
.typing-indicator {
    display: flex;
    gap: 6px;
    padding: 12px 0;
    margin-left: 52px;
    background: transparent;
    border: none;
    align-self: flex-start;
    align-items: center;
    animation: fadeIn 0.3s ease-out forwards;
    box-shadow: none;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-secondary);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
    box-shadow: 0 0 4px var(--accent-secondary);
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0.3); opacity: 0.4; }
    40% { transform: scale(1.2); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================================================
   Message Action Buttons (Edit, Regenerate) — Hover Reveal
   ========================================================================== */
.message-action-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 2px 0;
    opacity: 0;
    transition: opacity 0.15s ease;
    flex-wrap: wrap;
}

.message:hover .message-action-row {
    opacity: 1;
}

.message-action-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-pill);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 3px 10px;
    font-size: 0.72rem;
    font-family: inherit;
    font-weight: 500;
    transition: var(--transition-m3);
    line-height: 1.4;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.message-action-btn svg {
    width: 11px;
    height: 11px;
    display: block;
}

.message-action-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-color);
    background: var(--accent-dim);
}

.save-btn {
    color: var(--accent-color);
}

.save-btn:hover {
    background: var(--accent-dim);
    border-color: var(--accent-color);
}

.cancel-btn:hover {
    color: var(--accent-danger);
    border-color: var(--accent-danger-dim);
}

.edit-btn, .regen-btn {
    font-size: 0.85rem;
    line-height: 1;
    padding: 2px 8px;
}

/* ==========================================================================
   Version Navigation Bar
   ========================================================================== */
.version-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 0.7rem;
    color: var(--text-muted);
    user-select: none;
}

.version-nav-label {
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-muted);
    min-width: 28px;
    text-align: center;
}

.version-nav-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 5px;
    border-radius: var(--border-radius-pill);
    font-size: 0.7rem;
    line-height: 1;
    transition: var(--transition-m3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.version-nav-btn svg {
    width: 9px;
    height: 9px;
    display: block;
}

.version-nav-btn:hover {
    color: var(--text-primary);
    background: var(--accent-dim);
}

/* ==========================================================================
   Inline Edit Textarea
   ========================================================================== */
.inline-edit-textarea {
    width: 100%;
    min-height: 80px;
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
    border-radius: 16px;
    padding: 14px 18px;
    font-size: 0.95rem;
    font-family: inherit;
    line-height: 1.55;
    resize: vertical;
    outline: none;
    transition: var(--transition-m3);
    margin-bottom: 10px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.inline-edit-textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 14px var(--accent-glow), inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.inline-edit-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-bottom: 12px;
}

.inline-edit-actions .message-action-btn {
    padding: 6px 16px;
    border-radius: var(--border-radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-m3);
    border: none;
}

.inline-edit-actions .save-btn {
    background-color: var(--accent-color);
    color: var(--accent-text);
}

.inline-edit-actions .save-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.inline-edit-actions .cancel-btn {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.inline-edit-actions .cancel-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.user-message .inline-edit-textarea {
    background: var(--bg-input);
    border-radius: 24px;
    font-size: 0.95rem;
}

/* ==========================================================================
   Width Adjustment and Container Expansion when Editing
   ========================================================================== */
.message.editing {
    width: 100% !important;
    max-width: 100% !important;
    align-self: stretch !important;
}

.inline-edit-container {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

/* ==========================================================================
   Markdown Elements Inside Message Content
   ========================================================================== */
.message-content p {
    margin-bottom: 12px;
}
.message-content p:last-child {
    margin-bottom: 0;
}

.message-content strong {
    font-weight: 700;
    color: #ffffff; /* High contrast bold text */
}

/* Styled Lists */
.message-content ul, 
.message-content ol {
    margin-left: 24px;
    margin-bottom: 12px;
    padding-left: 0;
}

.message-content li {
    margin-bottom: 6px;
    line-height: 1.6;
}

.message-content li::marker {
    color: var(--accent-secondary); /* Turquoise list points! */
    font-weight: 700;
}

/* Styled Code blocks (Preformatted code) */
.message-content pre {
    background-color: #0b0f19; /* Deep slate obsidian code block background */
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin: 16px 0;
    overflow-x: auto;
    box-shadow: var(--shadow-m3-low);
}

.message-content pre code {
    background: transparent;
    padding: 0;
    border-radius: 0;
    border: none;
    font-family: 'Fira Code', 'Courier New', Courier, monospace;
    font-size: 0.88rem;
    color: #e2e8f0;
}

/* Styled Inline Code blocks */
.message-content code {
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 6px;
    padding: 3px 6px;
    font-family: 'Fira Code', 'Courier New', Courier, monospace;
    font-size: 0.88rem;
    color: var(--accent-color); /* Sky blue colored inline code highlights */
}

/* Styled Headers inside messages */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
    color: #ffffff;
    font-weight: 700;
    margin-top: 20px;
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.message-content h1 { font-size: 1.4rem; }
.message-content h2 { font-size: 1.25rem; }
.message-content h3 { font-size: 1.15rem; }
.message-content h4 { font-size: 1.05rem; }