/* ========== Let's set up the core color scheme ========== */
:root {
    --bg-primary: #343541;
    --bg-secondary: #444654;
    --bg-sidebar: #202123;
    --text-primary: #ececec;
    --text-secondary: #c5c5d2;
    --border-color: #4e4f60;
    --accent: #10a37f;
    --accent-hover: #1a7f64;
    --accent-glow: rgba(16, 163, 127, 0.2);
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --code-bg: #1e1e1e;
    --code-text: #d4d4d4;
    --user-bubble: #10a37f;
    --ai-bubble: #444654;
    --scrollbar-track: #343541;
    --scrollbar-thumb: #4e4f60;
    --scrollbar-thumb-hover: #10a37f;
    --modal-bg: #444654;
    --input-bg: #444654;
    --hover-bg: rgba(255,255,255,0.05);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.1);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.1);
}

/* Light theme – bright and clean */
body.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f8;
    --bg-sidebar: #f0f0f0;
    --text-primary: #2c2c2e;
    --text-secondary: #6c6c6e;
    --border-color: #e0e0e0;
    --code-bg: #f5f5f5;
    --code-text: #24292e;
    --user-bubble: #10a37f;
    --ai-bubble: #e5e5ea;
    --scrollbar-track: #f0f0f0;
    --scrollbar-thumb: #c0c0c0;
    --scrollbar-thumb-hover: #10a37f;
    --modal-bg: #ffffff;
    --input-bg: #ffffff;
    --hover-bg: rgba(0,0,0,0.05);
}

/* Neon theme – get your glow on */
body.neon-theme {
    --bg-primary: #0a0a1a;
    --bg-secondary: #0d0d2b;
    --bg-sidebar: #060614;
    --text-primary: #e0e0ff;
    --text-secondary: #a0a0d0;
    --border-color: #2a2a4e;
    --neon-accent: var(--current-neon-accent, #bc13fe);
    --accent: var(--neon-accent);
    --accent-hover: color-mix(in srgb, var(--accent) 70%, white);
    --accent-glow: color-mix(in srgb, var(--accent) 25%, transparent);
    --code-bg: #0a0a1a;
    --code-text: #e0e0ff;
    --user-bubble: var(--accent);
    --ai-bubble: #1a1a3e;
    --scrollbar-track: #0a0a1a;
    --scrollbar-thumb: var(--accent);
    --modal-bg: #0d0d2b;
    --input-bg: #0d0d2b;
    --hover-bg: color-mix(in srgb, var(--accent) 8%, transparent);
}

body.neon-theme[data-neon-accent="purple"] { --current-neon-accent: #bc13fe; }
body.neon-theme[data-neon-accent="blue"] { --current-neon-accent: #0088ff; }
body.neon-theme[data-neon-accent="cyan"] { --current-neon-accent: #00aaff; }
body.neon-theme[data-neon-accent="pink"] { --current-neon-accent: #ff44cc; }
body.neon-theme[data-neon-accent="green"] { --current-neon-accent: #00cc88; }
body.neon-theme[data-neon-accent="orange"] { --current-neon-accent: #ff8844; }
body.neon-theme[data-neon-accent="red"] { --current-neon-accent: #ff4466; }

/* Custom neon color will be set via JS */
body.neon-theme[data-neon-accent="custom"] {
    --current-neon-accent: var(--neon-custom-color);
}

/* ========== Basic reset & page setup ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.2s, color 0.2s;
}

.app-container { display: flex; height: 100vh; width: 100%; }

/* ========== Sidebar – chat history and controls ========== */
.sidebar {
    width: 280px; background: var(--bg-sidebar);
    display: flex; flex-direction: column;
    transition: transform 0.3s ease; z-index: 100;
    border-right: 1px solid var(--border-color);
}
.sidebar-header { padding: 16px; border-bottom: 1px solid var(--border-color); }
.new-chat-btn {
    width: 100%; padding: 12px; background: transparent;
    border: 1px solid var(--border-color); color: var(--text-primary);
    border-radius: 10px; cursor: pointer; display: flex;
    align-items: center; justify-content: center; gap: 8px;
    font-size: 14px; transition: all 0.2s;
}
.new-chat-btn:hover { background: var(--hover-bg); border-color: var(--accent); }
.conversations-list { flex: 1; overflow-y: auto; padding: 12px; }
.conversation-item {
    padding: 12px; margin-bottom: 4px; border-radius: 10px;
    cursor: pointer; transition: all 0.2s; display: flex;
    align-items: center; justify-content: space-between; gap: 8px;
}
.conversation-item:hover { background: var(--hover-bg); }
.conversation-item.active { background: var(--bg-secondary); border-left: 3px solid var(--accent); }
.conversation-info { flex: 1; min-width: 0; }
.conversation-title { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conversation-date { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }
.conversation-actions { display: none; gap: 4px; }
.conversation-item:hover .conversation-actions { display: flex; }
.conv-action-btn { background: transparent; border: none; color: var(--text-secondary); cursor: pointer; padding: 4px; border-radius: 6px; font-size: 12px; transition: all 0.2s; }
.conv-action-btn:hover { color: var(--accent); background: var(--hover-bg); }
.sidebar-footer { padding: 16px; border-top: 1px solid var(--border-color); }
.settings-btn { width: 100%; padding: 12px; background: transparent; border: none; color: var(--text-primary); cursor: pointer; display: flex; align-items: center; gap: 12px; border-radius: 10px; transition: all 0.2s; }
.settings-btn:hover { background: var(--hover-bg); }

/* ========== Main chat area ========== */
.chat-container { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.chat-header {
    position: relative;   /* needed for absolute positioning later if you want perfect centering */
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;    /* ← center everything horizontally */
}
.menu-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 22px; cursor: pointer; }
.chat-title {
    font-size: 18px;
    font-weight: 500;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 70%;            /* prevent it from overlapping buttons */
}
.chat-actions {
    position: absolute;
    right: 12px;
    display: flex;
    gap: 8px;
}
.action-btn { background: transparent; border: none; color: var(--text-secondary); cursor: pointer; padding: 6px; border-radius: 8px; font-size: 16px; transition: all 0.2s; }
.action-btn:hover { color: var(--accent); background: var(--hover-bg); }
.messages-area { flex: 1; overflow-y: auto; padding: 24px; }

/* ========== Welcome greeting when no messages yet ========== */
.welcome-message { text-align: center; max-width: 600px; margin: 60px auto; }
.welcome-icon { font-size: 64px; margin-bottom: 20px; }
.welcome-message h2 { margin-bottom: 16px; color: var(--accent); }
.welcome-message p { color: var(--text-secondary); margin-bottom: 12px; }

/* ========== Message bubbles – user on the right, assistant on the left ========== */
.message { display: flex; margin-bottom: 20px; }
.message.user { flex-direction: row !important; justify-content: flex-end !important; align-items: flex-end !important; }
.message.user .message-bubble { background: var(--user-bubble); border-radius: 18px 18px 4px 18px; color: white; }
.message.user .message-content,
.message.user .message-content p,
.message.user .message-content li,
.message.user .message-content strong,
.message.user .message-content em { color: rgba(255,255,255,0.95); }
.message.user .message-content a { color: white !important; text-decoration: underline; text-underline-offset: 2px; }
.message.user .message-content code { color: white !important; background: rgba(0,0,0,0.2) !important; }
.message.user .message-content pre { background: rgba(0,0,0,0.2) !important; }
.message.user .message-content blockquote { border-left-color: rgba(255,255,255,0.5) !important; background: rgba(0,0,0,0.15) !important; color: rgba(255,255,255,0.9) !important; }

/* User images: push them to the right side of the bubble */
.message.user .message-content img {
    display: block;
    margin-left: auto;
    margin-right: 0;
    clear: both;
}

.message.assistant { flex-direction: row !important; justify-content: flex-start !important; align-items: flex-end !important; }
.message.assistant .message-bubble { background: var(--ai-bubble); border-radius: 18px 18px 18px 4px; }

.message-avatar { width: 35px; height: 35px; border-radius: 50%; flex-shrink: 0; background-size: cover; background-position: center; background-color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: bold; }
.message.assistant .message-avatar { margin-right: 8px; margin-left: 0; align-self: flex-end; order: 1; }
.message.assistant .message-bubble { order: 2; }
.message.user .message-avatar { margin-left: 8px; margin-right: 0; align-self: flex-end; order: 2; background-color: var(--user-bubble); display: flex !important; align-items: center; justify-content: center; font-weight: bold; color: white; }
.message.user .message-bubble { order: 1; }
.message-bubble { max-width: 70%; padding: 10px 16px; position: relative; }

.message-header { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 12px; }
.message.user .message-header { justify-content: flex-end !important; margin-bottom: 6px; }
.message-name { font-size: 13px !important; font-weight: 700 !important; }
.message.assistant .message-name { color: var(--accent) !important; }
.message.user .message-name { color: #ffffff !important; text-shadow: 0 1px 2px rgba(0,0,0,0.2); }
.message-content { line-height: 1.5; }
.message-content img { max-width: 250px !important; max-height: 250px !important; border-radius: 10px; cursor: pointer; }

/* ========== Typing indicator – three dancing dots ========== */
.typing-indicator { display: flex; gap: 6px; padding: 8px 0; align-items: center; }
.typing-indicator span { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; animation: typingBounce 1.2s infinite ease-in-out; }
.typing-indicator span:nth-child(1) { animation-delay: -0.24s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.12s; }
.typing-indicator span:nth-child(3) { animation-delay: 0s; }
@keyframes typingBounce { 0%,80%,100%{transform:scale(.6);opacity:.5} 40%{transform:scale(1);opacity:1} }

/* ========== Input area with file attachments ========== */
.input-area { padding: 16px 24px 20px; border-top: 1px solid var(--border-color); background: var(--bg-primary); }
.input-container { max-width: 800px; margin: 0 auto; position: relative; }
.file-preview-area { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.input-wrapper { display: flex; gap: 10px; background: var(--input-bg); border-radius: 16px; padding: 10px 14px; border: 1px solid var(--border-color); transition: all 0.2s; }
.input-wrapper:focus-within { border-color: var(--accent); }
textarea { flex: 1; background: transparent; border: none; color: var(--text-primary); font-size: 15px; resize: none; font-family: inherit; outline: none; max-height: 200px; }
textarea::placeholder { color: var(--text-secondary); }
.file-upload-btn, .send-btn { background: transparent; border: none; color: var(--text-secondary); cursor: pointer; font-size: 18px; padding: 0 6px; }
.file-upload-btn:hover, .send-btn:hover { color: var(--accent); }
.upload-hint { margin-top: 6px; text-align: center; color: var(--text-secondary); font-size: 10px; }
.file-preview { position: relative; display: flex; align-items: center; gap: 8px; background: var(--bg-secondary); border-radius: 8px; padding: 6px 10px; border: 1px solid var(--border-color); }
.file-preview-badge { position: absolute; top: -5px; right: -5px; background: var(--danger); color: white; border-radius: 50%; width: 16px; height: 16px; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 10px; }

/* ========== Modals – settings, rename, etc. ========== */
.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); z-index: 1000; justify-content: center; align-items: center; }
.modal.active { display: flex; }
.modal-content { background: var(--modal-bg); border-radius: 20px; width: 90%; max-width: 550px; max-height: 85vh; overflow-y: auto; padding: 20px; border: 1px solid var(--border-color); }

/* ========== Modal header with blur ========== */
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: color-mix(in srgb, var(--modal-bg) 80%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 10;
}

.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 22px; cursor: pointer; }

/* ========== Settings panel with tabs ========== */
.settings-tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border-color); }
.settings-tab { padding: 8px 16px; background: transparent; border: none; color: var(--text-secondary); cursor: pointer; font-size: 13px; border-radius: 8px 8px 0 0; transition: all 0.2s; margin-bottom: -1px; }
.settings-tab:hover { color: var(--text-primary); background: var(--hover-bg); }
.settings-tab.active { color: var(--accent); border-bottom: 2px solid var(--accent); font-weight: 500; }
.settings-tab-content { display: none; }
.settings-tab-content.active { display: block; }
.settings-section { margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border-color); }
.settings-section h4 { margin-bottom: 12px; color: var(--accent); font-size: 15px; }
.settings-group { margin-bottom: 12px; }
.settings-group label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--text-secondary); font-size: 13px; }
.settings-group input, .settings-group textarea, .settings-group select { width: 100%; padding: 8px 10px; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-primary); font-size: 13px; font-family: inherit; transition: all 0.2s; }
.settings-group input:focus, .settings-group textarea:focus, .settings-group select:focus { outline: none; border-color: var(--accent); }
.settings-buttons {
    position: sticky;
    bottom: 0;
    background: color-mix(in srgb, var(--modal-bg) 80%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 16px 0 12px;
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
    z-index: 10;
    display: flex;
    gap: 10px;
}
.list-models-btn { width: 100%; padding: 8px; background: var(--bg-primary); border: 1px solid var(--accent); color: var(--accent); border-radius: 8px; cursor: pointer; font-size: 13px; }
.test-connection-btn { flex: 1; padding: 10px; background: var(--bg-primary); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: 8px; cursor: pointer; font-size: 13px; }
.save-settings-btn { flex: 1; padding: 10px; background: var(--accent); border: none; border-radius: 8px; color: white; font-weight: bold; cursor: pointer; }
.models-list { max-height: 400px; overflow-y: auto; margin: 25px 0; }
.model-item { padding: 8px 10px; margin: 3px 0; background: var(--bg-primary); border-radius: 8px; font-family: system-ui, sans-serif; font-size: 12px; cursor: pointer; }
.model-item:hover {
    background: var(--accent);
    color: white;
    box-shadow: 0 2px 8px var(--accent-glow);
}
/* Style for the search input inside the model list modal */
#modelSearchInput {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 14px;
    width: 100%;
    transition: border-color 0.2s;
}

#modelSearchInput:focus {
    outline: none;
    border-color: var(--accent);
}

/* "No results" message */
.no-results-message {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}
.accent-color-select { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; align-items: center; }
.accent-color-option { width: 32px; height: 32px; border-radius: 50%; cursor: pointer; border: 2px solid var(--border-color); transition: all 0.2s; }
.accent-color-option:hover { transform: scale(1.1); border-color: white; }
.accent-color-option.selected { border-color: white; box-shadow: 0 0 8px currentColor; }


/* ========== Markdown styling – headings, lists, quotes, etc. ========== */
.markdown-h1, .markdown-h2, .markdown-h3, .markdown-h4 { color: var(--accent) !important; }
.markdown-h1 { font-size: 1.6em; font-weight: 600; margin: 0.6em 0 0.4em; padding-bottom: 0.2em; border-bottom: 1px solid var(--border-color); }
.markdown-h2 { font-size: 1.4em; font-weight: 600; margin: 0.5em 0 0.3em; padding-bottom: 0.2em; border-bottom: 1px solid var(--border-color); }
.markdown-h3 { font-size: 1.2em; font-weight: 600; margin: 0.4em 0 0.2em; }
.markdown-h4 { font-size: 1.1em; font-weight: 600; margin: 0.3em 0 0.2em; }
.markdown-h5 { font-size: 1em; font-weight: 600; margin: 0.2em 0 0.1em; color: var(--text-secondary); }
.markdown-h6 { font-size: 0.9em; font-weight: 600; margin: 0.2em 0 0.1em; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.markdown-h1:first-child, .markdown-h2:first-child, .markdown-h3:first-child, .markdown-h4:first-child, .markdown-h5:first-child, .markdown-h6:first-child { margin-top: 0; }
.markdown-paragraph { margin: 0 0 8px; line-height: 1.5; }
.markdown-paragraph:last-child { margin-bottom: 0; }
.markdown-link { color: var(--accent) !important; text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.15s; }
.markdown-link:hover { border-bottom-color: var(--accent); }
.markdown-list { margin: 8px 0; padding-left: 20px; }
.markdown-list li { margin: 4px 0; line-height: 1.5; }
.markdown-quote { margin: 10px 0; padding: 8px 14px; border-left: 3px solid var(--accent) !important; background: var(--hover-bg); border-radius: 6px; font-style: italic; }
/* Default for all themes (no animation, just a clean line) */
.markdown-hr {
    margin: 28px 0 !important;
    border: none !important;
    height: 4px !important;
    width: 100% !important;
    background: linear-gradient(90deg, transparent, var(--accent), transparent) !important;
    border-radius: 8px !important;
}

/* Light theme subtle styling */
body.light-theme .markdown-hr {
    height: 3px !important;
    opacity: 0.7;
}
/* ========== Table styles ========== */
.markdown-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.9em;
    overflow-x: auto;
    display: block;
}
.markdown-table th,
.markdown-table td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}
.markdown-table th {
    background-color: var(--hover-bg);
    color: var(--accent);
    font-weight: 600;
}
.markdown-table tr:nth-child(even) {
    background-color: var(--hover-bg);
}
.markdown-table tr:hover {
    background-color: var(--accent-glow);
}

/* Task lists */
.task-list-item {
    list-style-type: none;
    margin-left: -1.2em;
}
.task-list-item input {
    margin-right: 0.5em;
    accent-color: var(--accent);
}

/* Definition lists */
dl {
    margin: 1em 0;
}
dt {
    font-weight: bold;
    color: var(--accent);
    margin-top: 0.5em;
}
dd {
    margin-left: 1.5em;
    color: var(--text-secondary);
}

/* Footnotes */
.footnote-ref {
    font-size: 0.8em;
    vertical-align: super;
    color: var(--accent);
    text-decoration: none;
}
.footnotes {
    margin-top: 2em;
    border-top: 1px solid var(--border-color);
    padding-top: 1em;
    font-size: 0.85em;
}
.footnotes ol {
    padding-left: 1.5em;
}
.footnotes li {
    margin: 0.5em 0;
}
.footnote-backref {
    color: var(--accent);
    text-decoration: none;
    margin-left: 0.3em;
}

/* Superscript and subscript */
sup, .superscript {
    font-size: 0.75em;
    vertical-align: super;
}
sub, .subscript {
    font-size: 0.75em;
    vertical-align: sub;
}

/* Abbreviations */
abbr[title] {
    border-bottom: 1px dotted var(--accent);
    cursor: help;
    text-decoration: none;
}

/* ========== NEON THEME ONLY: animated pulse ========== */
body.neon-theme .markdown-hr {
    transform-origin: center;
    will-change: transform, opacity;
    backface-visibility: hidden;
    animation: hrPulse 1s ease-in-out infinite alternate;
}

@keyframes hrPulse {
    0% {
        opacity: 0.5;
        transform: scaleX(0.85);
    }
    100% {
        opacity: 1;
        transform: scaleX(1);
    }
}
/* ========== Code ========== */
.inline-code { color: var(--accent) !important; background: var(--code-bg) !important; padding: 0.2em 0.4em; border-radius: 4px; font-family: 'Consolas','Monaco','Courier New',monospace; font-size: 0.9em; }
.code-block-wrapper { margin: 10px 0; border-radius: 8px; overflow: hidden; background: var(--code-bg); border: 1px solid var(--border-color); border-left: 3px solid var(--accent); }
.code-block-wrapper:first-child { margin-top: 0; }
.code-block-wrapper:last-child { margin-bottom: 0; }
.code-header { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; background: var(--hover-bg); border-bottom: 1px solid var(--border-color); font-size: 11px; }
.code-language { color: var(--accent) !important; font-weight: 500; text-transform: uppercase; font-family: monospace; }
.code-actions { display: flex; gap: 6px; }
.code-action-btn { background: var(--bg-primary) !important; border: 1px solid var(--border-color) !important; color: var(--text-secondary) !important; padding: 4px 10px !important; border-radius: 6px !important; cursor: pointer !important; font-size: 11px !important; font-family: inherit !important; transition: all 0.2s !important; }
.code-action-btn:hover { background: var(--accent) !important; color: white !important; border-color: var(--accent) !important; }
.code-block-wrapper pre { margin: 0; padding: 12px; overflow-x: auto; background: var(--code-bg); }
.code-block-wrapper code { font-family: 'Consolas','Monaco','Courier New',monospace; font-size: 12px; line-height: 1.5; color: var(--code-text); }

/* ========== Thinking Blocks ========== */
.thinking-block { border: 1px solid var(--border-color); border-radius: 8px; margin: 8px 0; overflow: hidden; font-size: 13px; }
.thinking-header { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--hover-bg); cursor: pointer; user-select: none; font-weight: 500; color: var(--text-secondary); }
.thinking-header .arrow { transition: transform 0.2s; font-size: 10px; }
.thinking-header.open .arrow { transform: rotate(90deg); }
.thinking-content { display: none; padding: 8px 12px; background: var(--code-bg); color: var(--text-secondary); font-style: italic; line-height: 1.5; border-top: 1px solid var(--border-color); max-height: 300px; overflow-y: auto; }
.thinking-content.open { display: block; }

/* ========== @Mentions ========== */
.message-content .mention { color: var(--accent); font-weight: 600; background: var(--accent-glow); padding: 1px 5px; border-radius: 4px; }
.message.user .message-content .mention { color: white; background: rgba(255,255,255,0.2); font-weight: 700; }

/* ========== Mention Autocomplete ========== */
.mention-suggestions { position: absolute; bottom: 60px; left: 0; background: var(--modal-bg); border: 1px solid var(--border-color); border-radius: 12px; max-height: 220px; overflow-y: auto; z-index: 100; min-width: 220px; box-shadow: 0 -4px 20px rgba(0,0,0,0.4); }
.mention-suggestion-item { padding: 10px 14px; cursor: pointer; display: flex; align-items: center; gap: 10px; transition: all 0.15s; font-size: 14px; border-bottom: 1px solid var(--border-color); }
.mention-suggestion-item:last-child { border-bottom: none; }
.mention-suggestion-item:hover, .mention-suggestion-item.active { background: var(--accent); color: white; }
.mention-suggestion-item:hover .suggestion-name, .mention-suggestion-item.active .suggestion-name,
.mention-suggestion-item:hover .suggestion-model, .mention-suggestion-item.active .suggestion-model { color: white; }
.mention-suggestion-item .suggestion-avatar { width: 30px; height: 30px; border-radius: 50%; background-size: cover; background-position: center; background-color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: bold; color: white; flex-shrink: 0; }
.mention-suggestion-item .suggestion-name { color: var(--text-primary); font-weight: 600; font-size: 14px; }
.mention-suggestion-item .suggestion-model { color: var(--text-secondary); font-size: 11px; margin-top: 1px; }

/* ========== Toast ========== */
.toast { position: fixed; bottom: 20px; right: 20px; background: var(--accent); color: white; padding: 10px 18px; border-radius: 10px; font-size: 13px; z-index: 2000; animation: fadeInOut 2.5s ease forwards; }
@keyframes fadeInOut { 0%{opacity:0;transform:translateX(20px)} 15%{opacity:1;transform:translateX(0)} 85%{opacity:1} 100%{opacity:0;transform:translateX(20px)} }

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

/* ========== Sidebar Overlay ========== */
.sidebar-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 99; }
.sidebar-overlay.active { display: block; }

/* ========== MOBILE ========== */
@media (max-width: 1024px) {
    html, body { height: 100dvh; overflow: hidden; position: fixed; width: 100%; }
    .app-container { height: 100dvh; }
    
    .sidebar { position: fixed; left: 0; top: 0; height: 100dvh; z-index: 200; transform: translateX(-100%); box-shadow: 2px 0 20px rgba(0,0,0,0.5); padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); display: flex; flex-direction: column; }
    .sidebar.open { transform: translateX(0); }
    .sidebar-header { flex-shrink: 0; }
    .conversations-list { flex: 1; overflow-y: auto; padding-bottom: 8px; }
    .sidebar-footer { flex-shrink: 0; padding: 12px 16px; padding-bottom: max(12px, env(safe-area-inset-bottom, 12px)); border-top: 1px solid var(--border-color); background: var(--bg-sidebar); }
    .settings-btn { padding: 14px; font-size: 16px; }

    /* Center the modal vertically and horizontally */
    #modelListModal {
        align-items: center !important;   /* override any bottom alignment */
    }

    #modelListModal .modal-content {
        display: flex;
        flex-direction: column;
        max-height: 60vh;                /* comfortable height, not too tall */
        height: auto;
        width: 90%;
        margin: 0 auto;                  /* horizontal centering */
        border-radius: 16px;
        padding: 0;
        overflow: hidden;
        background: var(--modal-bg);
    }

    /* Header remains sticky */
    #modelListModal .modal-header {
        flex-shrink: 0;
        padding: 16px 20px 8px;
        margin: 0;
        border-bottom: 1px solid var(--border-color);
    }

    /* Search input area */
    #modelListModal .settings-group {
        flex-shrink: 0;
        padding: 8px 20px;
        margin: 0;
    }

    #modelSearchInput {
        width: 100%;
        padding: 10px 12px;
        font-size: 16px;
        border-radius: 10px;
    }

    /* Scrollable model list */
    #modelListContainer {
        flex: 1;
        overflow-y: auto;
        padding: 0 12px 16px;
        max-height: none;
    }

    .model-item {
        padding: 12px 12px;
        font-size: 15px;
        margin: 4px 0;
        white-space: normal;
        word-break: break-word;
        border-radius: 10px;
    }
    
    .chat-header {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;          /* keeps title centered */
        flex-wrap: nowrap;
        padding-top: max(16px, env(safe-area-inset-top));
        padding-bottom: 12px;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        min-height: 60px;
    }
    .menu-toggle {
        position: absolute;
        left: 12px;                       /* left side */
        top: 50%;
        transform: translateY(-50%);
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        min-width: 44px;
        font-size: 26px;
        background: var(--bg-secondary);
        border-radius: 12px;
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        cursor: pointer;
        z-index: 5;
    }
    .chat-title {
        font-size: 15px;
        max-width: 50%;
        text-align: center;
        margin: 0 auto;
    }
    .chat-actions {
        position: absolute;
        right: 12px;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        gap: 4px;
    }
    
    .messages-area { padding: 10px 6px; padding-top: 8px; }
    .message-bubble { max-width: 88% !important; }
    .message-avatar { width: 28px !important; height: 28px !important; font-size: 12px !important; }
    .message.user .message-avatar { width: 28px !important; height: 28px !important; margin-left: 4px !important; }
    .message.assistant .message-avatar { width: 28px !important; height: 28px !important; margin-right: 4px !important; }
    
    .input-area { padding: 8px 10px 12px; }
    .input-wrapper { padding: 6px 8px; gap: 4px; }
    textarea { font-size: 14px; }
    
    .conversation-actions { display: flex !important; gap: 4px; opacity: 0.7; }
    .modal-content { width: 100%; height: 100%; max-width: none; max-height: 100dvh; border-radius: 0; padding: 16px; padding-top: max(16px, env(safe-area-inset-top)); padding-bottom: max(16px, env(safe-area-inset-bottom)); }
    .settings-tab { padding: 8px 10px; font-size: 11px; }
    .modal.active { align-items: flex-end; }
    .settings-tabs { position: sticky; top: 0; background: var(--modal-bg); z-index: 10; padding-top: 8px; }
    .welcome-icon { font-size: 48px; }
    .welcome-message h2 { font-size: 18px; }

    @media (max-width: 1024px) {
        html, body { height: 100dvh; overflow: hidden; position: fixed; width: 100%; }
        .app-container { height: 100dvh; }

        .sidebar {
            position: fixed; left: 0; top: 0; height: 100dvh; z-index: 200;
            transform: translateX(-100%); box-shadow: 2px 0 20px rgba(0,0,0,0.5);
            padding-top: env(safe-area-inset-top, 0px);
            padding-bottom: env(safe-area-inset-bottom, 0px);
            display: flex; flex-direction: column;
        }
        .sidebar.open { transform: translateX(0); }
        .sidebar-header { flex-shrink: 0; }
        .conversations-list { flex: 1; overflow-y: auto; padding-bottom: 8px; }
        .sidebar-footer { flex-shrink: 0; padding: 12px 16px; padding-bottom: max(12px, env(safe-area-inset-bottom, 12px)); }

        /* Chat header */
        .chat-header {
            position: sticky;
            top: 0;
            z-index: 50;
            display: flex;
            align-items: center;                    /* vertical center for all children */
            justify-content: flex-start;           /* start from left, we'll push title to center manually */
            padding-top: max(16px, env(safe-area-inset-top));
            padding-bottom: 12px;
            padding-left: 12px;
            padding-right: 12px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            min-height: 60px;
            gap: 8px;
        }

        /* Hamburger – revert to normal flex child on mobile */
        .menu-toggle {
            display: flex !important;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            min-width: 44px;
            font-size: 26px;
            background: var(--bg-secondary);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            cursor: pointer;
            flex-shrink: 0;
            position: static;                      /* remove absolute */
            transform: none;                       /* remove transform */
            z-index: auto;
        }

        /* Title */
        .chat-title {
            flex: 1;
            text-align: center;
            font-size: 15px;
            max-width: none;
            margin: 0;
        }

        /* Actions */
        .chat-actions {
            display: flex;
            gap: 4px;
            flex-shrink: 0;
            position: static;
            transform: none;
        }
        .chat-actions .action-btn { padding: 6px; font-size: 15px; }

        /* The rest of the mobile styles (messages, input, etc.) stays the same */
        .messages-area { padding: 10px 6px; padding-top: 8px; }
        .message-bubble { max-width: 88% !important; }
        /* … and so on … */
    }

}

/* ========== Larger Screens ========== */
@media (min-width: 1024px) {
    .modal-content {
        max-width: 700px;
        padding: 28px;
    }
    
    .settings-tab {
        font-size: 14px;
        padding: 10px 20px;
    }
    
    .settings-section h4 {
        font-size: 16px;
    }
    
    .settings-group label {
        font-size: 14px;
    }
    
    .settings-group input,
    .settings-group textarea,
    .settings-group select {
        font-size: 14px;
        padding: 10px 12px;
    }
    
    .list-models-btn,
    .test-connection-btn,
    .save-settings-btn {
        font-size: 14px;
        padding: 12px;
    }
}

/* Conversation item menu */
.conversation-item {
    position: relative;
}

.conversation-menu {
    position: relative;
}

.conv-menu-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    font-size: 16px;
    transition: all 0.2s;
}

.conv-menu-btn:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}

.conv-dropdown {
    position: absolute;
    right: 0;
    top: 100%;
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    min-width: 140px;
    z-index: 300;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    padding: 4px 0;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 8px 14px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13px;
    text-align: left;
    transition: background 0.15s;
}

.dropdown-item:hover {
    background: var(--hover-bg);
}

/* Already updated .settings-buttons above */

@media (min-width: 1024px) {
    .modal-content {
        max-width: 964px;
    }
}

/* Add these at the end of your style.css */

/* API Profile rows */
.api-profile-row {
    margin-bottom: 12px;
    padding: 10px;
    border-radius: 12px;
    background: var(--bg-secondary);
}
.api-profile-row input {
    width: 100%;
    padding: 8px 10px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 13px;
}
.api-profile-row input:focus {
    outline: none;
    border-color: var(--accent);
}
.delete-profile-btn {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 16px;
    cursor: pointer;
    padding: 0 4px;
}
.delete-profile-btn:hover {
    color: var(--danger-hover);
}

/* Ensure the API profiles container doesn't overflow on mobile */
#apiProfilesContainer {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 10px;
}

/* ========== Security Notice ========== */
.security-notice {
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
    padding: 8px;
    margin-top: 12px;
    border-top: 1px solid var(--border-color);
    opacity: 0.7;
}
.security-notice::before {
    content: "🔒 ";
}