/* ═══════════════════════════════════════════════════════════════
   ChatGPT-Style Chat Override
   Loaded after style.css — overrides all message, typing, and
   input styles with a clean ChatGPT-identical layout.

   KEY PRINCIPLE: Every message row is a 768px centered column.
   User content right-aligns within it, assistant left-aligns.
   Typing dots use the same column so they sit exactly where
   the next assistant response will appear.
   ═══════════════════════════════════════════════════════════════ */

/* --- Reset: kill every glass/crystal effect on chat elements --- */
.chat-main *::before,
.chat-main *::after {
    background: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
}

/* ── Page-level layout ── */
.chat-main {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    overflow: hidden;
}

/* ── Top header bar with logo + title ── */
.chat-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--sidebar-divider, rgba(0,0,0,0.06));
    flex-shrink: 0;
}

.chat-header-logo {
    height: 40px;
    width: auto;
}

.chat-header-title {
    font-family: var(--font-heading, 'DM Serif Text', serif);
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 400;
}

html.dark .chat-header {
    border-bottom-color: #222;
}

/* ── Scrolling message list ── */
.messages-area {
    flex: 1 1 0;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 0 20px 0;
    gap: 0;
    scroll-behavior: smooth;
}

/* ── Empty state: heading + input grouped in center of page ── */
.messages-area .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 20px;
    margin-top: 0;
}

/* When empty: messages-area takes up space to push content to ~center */
.chat-main:has(.empty-state:not(.hidden)) .messages-area {
    flex: 1 !important;
    padding-top: 0 !important;
    justify-content: flex-end;
    padding-bottom: 16px !important;
}

/* When empty: input area snugs up right below the heading */
.chat-main:has(.empty-state:not(.hidden)) .input-area {
    padding-bottom: 30vh;
}

/* ═══════════════════════════════════════════════════════════════
   MESSAGE ROWS
   Every .message-bubble is a centered 768px column.
   ═══════════════════════════════════════════════════════════════ */

.message-bubble {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 768px;
    margin: 0 auto;
    padding: 12px 24px;
    box-sizing: border-box;
    border: none !important;
    position: relative;
    animation: none !important;
}

/* ── Shared message-content reset ── */
.message-bubble .message-content {
    position: relative;
    overflow-wrap: break-word;
    word-break: break-word;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.75;
    border: none !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    overflow: visible;
    transition: none;
}

/* ── User message: left-aligned within the column ── */
.message-bubble.message-user {
    align-items: flex-start;
}

.message-bubble.message-user .message-content {
    background: #f4f4f4;
    color: #0d0d0d;
    border-radius: 22px;
    padding: 10px 20px;
    max-width: 80%;
    width: fit-content;
    font-weight: 400;
}

html.dark .message-bubble.message-user .message-content {
    background: #303030;
    color: #ececec;
}

/* ── Assistant message: left-aligned bubble within the column ── */
.message-bubble.message-assistant {
    align-items: flex-start;
}

.message-bubble.message-assistant .message-content {
    background: #f9f9f9;
    color: var(--text-primary);
    border-radius: 22px;
    padding: 10px 20px;
    max-width: 80%;
    width: fit-content;
    box-sizing: border-box;
    font-weight: 400;
}

html.dark .message-bubble.message-assistant .message-content {
    background: #212121;
}

/* ═══════════════════════════════════════════════════════════════
   COPY BUTTON — below assistant text, left-aligned in same column
   ═══════════════════════════════════════════════════════════════ */

.message-copy-btn {
    position: static !important;
    display: none;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    margin: 4px 0 0 0;
    background: transparent;
    border: none !important;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 6px;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
}

.message-bubble.message-assistant .message-copy-btn {
    display: flex;
    opacity: 0;
}

.message-bubble.message-assistant:hover .message-copy-btn {
    opacity: 1;
}

.message-copy-btn:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.06);
}

html.dark .message-copy-btn:hover {
    background: rgba(255, 255, 255, 0.08);
}

.message-copy-btn.copied {
    color: #22c55e;
    opacity: 1 !important;
}

/* ═══════════════════════════════════════════════════════════════
   TIMESTAMP
   ═══════════════════════════════════════════════════════════════ */

.message-timestamp {
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 0.15s;
    margin-top: 4px;
}

.message-bubble:hover .message-timestamp {
    opacity: 0.7;
}

/* ═══════════════════════════════════════════════════════════════
   TYPING INDICATOR
   Exact same dimensions as .message-bubble.message-assistant:
   max-width 768px, padding 12px 24px, centered with margin auto.
   Dots start at the same left offset as assistant text.
   ═══════════════════════════════════════════════════════════════ */

.typing-indicator {
    display: none !important;
    align-items: center;
    gap: 6px;
    width: 100%;
    max-width: 768px;
    margin: 0 auto;
    /* 24px bubble padding + 20px content padding = 44px to match assistant text */
    padding: 12px 44px;
    box-sizing: border-box;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    /* Ensure no extra alignment offset */
    align-self: center;
}

.typing-indicator.visible {
    display: flex !important;
}

.typing-indicator .typing-dot,
.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: chatgpt-typing 1.4s ease-in-out infinite;
}

.typing-indicator .typing-dot:nth-child(2),
.typing-indicator span:nth-child(2) {
    animation-delay: 0.16s;
}

.typing-indicator .typing-dot:nth-child(3),
.typing-indicator span:nth-child(3) {
    animation-delay: 0.32s;
}

@keyframes chatgpt-typing {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-4px);
    }
}

/* ═══════════════════════════════════════════════════════════════
   INPUT AREA — same 768px centered column
   ═══════════════════════════════════════════════════════════════ */

.input-area {
    max-width: 768px;
    margin: 0 auto;
    width: 100%;
    padding: 0 16px 24px;
    box-sizing: border-box;
    position: relative;
    z-index: 5;
}

.input-wrapper {
    border-radius: 24px;
    background: var(--glass-fill-dense, #f9f9f9);
    border: 1px solid var(--glass-border-bottom, #e5e5e5);
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
    padding: 6px;
}

html.dark .input-wrapper {
    background: #2f2f2f;
    border-color: #424242;
}

.input-wrapper:focus-within {
    border-color: var(--accent, #3d8fd4);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.08);
}

/* ═══════════════════════════════════════════════════════════════
   FILE ATTACHMENTS
   ═══════════════════════════════════════════════════════════════ */

.message-files {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.message-file-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    background: var(--accent-light, rgba(61,143,212,0.1));
    border: 1px solid var(--accent, #3d8fd4);
    color: var(--accent-dark, #2b6fa8);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 12px;
}

/* ═══════════════════════════════════════════════════════════════
   MARKDOWN IN ASSISTANT MESSAGES
   ═══════════════════════════════════════════════════════════════ */

.message-bubble.message-assistant .message-content p {
    margin: 0 0 12px 0;
}

.message-bubble.message-assistant .message-content p:last-child {
    margin-bottom: 0;
}

.message-bubble.message-assistant .message-content ul,
.message-bubble.message-assistant .message-content ol {
    margin: 8px 0;
    padding-left: 24px;
}

.message-bubble.message-assistant .message-content li {
    margin-bottom: 4px;
}

.message-bubble.message-assistant .message-content code {
    font-family: var(--font-mono, 'SF Mono', Consolas, monospace);
    font-size: 0.875em;
    background: var(--code-bg, rgba(0,0,0,0.05));
    padding: 2px 5px;
    border-radius: 4px;
}

.message-bubble.message-assistant .message-content pre {
    margin: 12px 0;
    border-radius: 8px;
    overflow-x: auto;
}

.message-bubble.message-assistant .message-content pre code {
    background: transparent;
    padding: 0;
    border-radius: 0;
}

/* ═══════════════════════════════════════════════════════════════
   SOURCES DROPDOWN
   ═══════════════════════════════════════════════════════════════ */

.sources-dropdown {
    margin-top: 8px;
}

.sources-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--glass-fill-subtle, rgba(0,0,0,0.04));
    border: 1px solid var(--sidebar-divider, rgba(0,0,0,0.08));
    border-radius: 20px;
    color: var(--text-secondary, #5a6580);
    font-size: 0.8rem;
    font-family: var(--font);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.sources-toggle:hover {
    background: var(--glass-fill-dense, rgba(0,0,0,0.06));
    color: var(--text-primary);
}

.sources-count {
    color: var(--text-muted);
    font-weight: 400;
}

.sources-chevron {
    transition: transform 0.2s ease;
}

.sources-dropdown.open .sources-chevron {
    transform: rotate(180deg);
}

.sources-list {
    display: none;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
    padding: 8px 0;
}

.sources-dropdown.open .sources-list {
    display: flex;
}

.source-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: 10px;
    color: var(--text-secondary, #5a6580);
    text-decoration: none;
    font-size: 0.85rem;
    line-height: 1.4;
    transition: background 0.15s, color 0.15s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.source-item:hover {
    background: var(--glass-fill-subtle, rgba(0,0,0,0.04));
    color: var(--accent, #3d8fd4);
}

.source-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent-light, rgba(61,143,212,0.1));
    color: var(--accent, #3d8fd4);
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

/* Dark mode */
html.dark .sources-toggle {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.1);
}

html.dark .sources-toggle:hover {
    background: rgba(255,255,255,0.1);
}

html.dark .source-item:hover {
    background: rgba(255,255,255,0.06);
}

/* ═══════════════════════════════════════════════════════════════
   MOBILE
   ═══════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
    .message-bubble {
        padding: 8px 16px;
    }

    .message-bubble.message-user .message-content {
        max-width: 85%;
        padding: 10px 16px;
        font-size: 14px;
    }

    .message-bubble.message-assistant .message-content {
        font-size: 14px;
    }

    .typing-indicator {
        padding: 8px 16px !important; /* matches mobile .message-bubble padding */
    }

    .chat-main:has(.empty-state:not(.hidden)) .input-area {
        padding-bottom: 20vh;
    }

    .input-area {
        padding: 0 10px 16px;
    }
}