/* ================================================================
   PDCO.AI — Glass design system (poo.php compatible)
   Vazirmatn • Glass cards • Teal→blue gradients • Theme toggle
   ================================================================ */

/* === DESIGN TOKENS (light default, dark via [data-theme="dark"]) === */
:root {
    --brand:#0f766e; --brand-dark:#0f766e; --brand-light:#ccfbf1; --brand-2:#2563eb;
    --brand-grad:linear-gradient(135deg,#14b8a6,#2563eb);
    --success:#16a34a; --danger:#dc2626; --warning:#f59e0b; --muted:#64748b;
    --body-bg:linear-gradient(160deg,#eef7ff 0%,#dff0fb 45%,#cfe8fa 100%);
    --card-bg:rgba(255,255,255,.9);
    --card-border:rgba(255,255,255,.6);
    --soft-bg:#fafcff; --line:#eef3f8; --hover:#f0f8ff;
    --text:#0f172a; --text-soft:#51606e; --text-muted:#64748b;
    --input-border:#dce8f1; --input-bg:#fff;
    --shadow:0 4px 18px rgba(15,23,42,.08);
    --shadow-lg:0 12px 40px rgba(15,23,42,.14);
    --nav-bg:transparent; --nav-color:#51606e; --nav-active:#fff;
    --thead-grad:linear-gradient(135deg,#0f766e,#2563eb);

    color-scheme: light;

    /* aliases consumed by the chat layout */
    --bg-main: #eef4f9;
    --bg-sidebar: rgba(255,255,255,.72);
    --bg-input: #ffffff;
    --bg-hover: rgba(0,0,0,.05);
    --bg-active: rgba(0,0,0,.07);
    --bg-card: rgba(255,255,255,.9);
    --bg-code: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #51606e;
    --border: #dce8f1;
    --border-subtle: #eef3f8;
    --border-hairline: rgba(15,23,42,.08);
    --hover-veil: rgba(0,0,0,.04);

    --radius: 12px;
    --radius-sm: 10px;
    --radius-pill: 9999px;

    --font: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', 'Noto Sans Arabic', Tahoma, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

    --transition: 0.15s ease;
    --sidebar-width: 260px;
    --chat-max-width: 768px;
    --header-height: 52px;
}

[data-theme="dark"] {
    --brand:#00d4ff; --brand-dark:#7deeff; --brand-light:#06283f; --brand-2:#2563eb;
    --brand-grad:linear-gradient(135deg,#00d4ff,#2563eb);
    --success:#4ade80; --danger:#f87171; --warning:#fbbf24; --muted:#8a94a6;
    --body-bg:radial-gradient(circle at 85% 0%,rgba(0,212,255,.14),transparent 32rem),linear-gradient(160deg,#0b1120 0%,#0e1526 55%,#0a0f1c 100%);
    --card-bg:rgba(17,24,39,.88);
    --card-border:rgba(0,212,255,.16);
    --soft-bg:#111827; --line:#1e293b; --hover:#1e293b;
    --text:#e6edf7; --text-soft:#c3d0e0; --text-muted:#8a94a6;
    --input-border:#334155; --input-bg:#0f172a;
    --shadow:0 4px 18px rgba(0,0,0,.45);
    --shadow-lg:0 12px 40px rgba(0,212,255,.14);
    --nav-bg:transparent; --nav-color:#aab8c9; --nav-active:#fff;
    --thead-grad:linear-gradient(135deg,#00d4ff,#2563eb);

    color-scheme: dark;

    --bg-main: #0b1120;
    --bg-sidebar: rgba(11,17,32,.78);
    --bg-input: #0f172a;
    --bg-hover: rgba(255,255,255,.06);
    --bg-active: rgba(0,212,255,.10);
    --bg-card: rgba(17,24,39,.88);
    --bg-code: #0a0f1c;
    --text-primary: #e6edf7;
    --text-secondary: #c3d0e0;
    --border: #334155;
    --border-subtle: #1e293b;
    --border-hairline: rgba(0,212,255,.12);
    --hover-veil: rgba(255,255,255,.05);
}

/* === RESET === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { height: 100%; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    background: var(--body-bg);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.5;
    height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background .25s, color .25s;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--brand); opacity: .55; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--brand-dark); }

/* === BUTTONS === */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 8px 16px; border: none; border-radius: var(--radius);
    cursor: pointer; font-size: 14px; font-weight: 500;
    font-family: var(--font); transition: background var(--transition);
    text-decoration: none; line-height: 1.4; gap: 6px;
}
.btn-primary {
    background: var(--brand-grad); color: #fff;
}
.btn-primary:hover { opacity: 0.9; color: #fff; }
.btn-secondary {
    background: transparent; color: var(--text-primary);
    border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--hover-veil); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.btn-block { display: flex; width: 100%; }
.btn-ghost {
    background: transparent; color: var(--text-secondary);
    border: 1px solid transparent;
}
.btn-ghost:hover { background: var(--hover-veil); color: var(--text-primary); }
.btn-info { background: var(--brand); color: #fff; }
.btn-info:hover { opacity: 0.9; color: #fff; }

/* === GLASS COMPONENTS — poo.php compatible === */
.navbar-brand-lg {
    display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
    font-size: 1.3rem; font-weight: 800; color: var(--text);
}
.brand-logo {
    font-weight: 900; letter-spacing: 1px;
    background: var(--brand-grad);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.brand-logo-img {
    width: 44px; height: 44px; object-fit: contain; border-radius: 12px;
    box-shadow: 0 8px 20px rgba(34,211,238,.22);
    background: #fff; padding: 2px;
}
.login-logo-img {
    width: 72px; height: 72px; object-fit: contain; border-radius: 16px;
    box-shadow: 0 10px 26px rgba(34,211,238,.25);
    background: #fff; padding: 3px;
}
.brand-sub { font-size: .85rem; font-weight: 600; color: var(--text-soft); }
.brand-chip {
    display: inline-flex; align-items: center; gap: .4rem;
    background: var(--brand-grad); color: #fff;
    padding: .35rem 1rem; border-radius: 999px;
    font-size: .8rem; font-weight: 700; box-shadow: var(--shadow);
}
.theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 2.1rem; height: 2.1rem; border-radius: 999px;
    border: 1px solid var(--line); background: var(--card-bg);
    color: var(--text); cursor: pointer; box-shadow: var(--shadow);
    transition: all .18s;
}
.theme-toggle:hover { transform: translateY(-2px); }
.card-soft {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    box-shadow: var(--shadow);
}
.app-header {
    flex-shrink: 0; padding: .6rem 1rem;
    border-bottom: 1px solid var(--card-border);
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    z-index: 10;
}
.app-header-inner {
    max-width: 1140px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    gap: .75rem; flex-wrap: wrap;
}
.app-header-actions { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.text-muted { color: var(--text-muted) !important; }
.social-sidebar {
    position: fixed; left: 0; top: 50%; transform: translateY(-50%);
    display: flex; flex-direction: column; gap: .5rem; z-index: 1030;
    padding: .5rem .42rem;
    background: var(--card-bg); backdrop-filter: blur(10px);
    border: 1px solid var(--line); border-left: none;
    border-radius: 0 16px 16px 0;
    box-shadow: var(--shadow);
}
.social-sidebar a {
    width: 38px; height: 38px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--text); background: var(--soft-bg);
    border: 1px solid var(--line); text-decoration: none;
    transition: all .18s;
}
.social-sidebar a:hover {
    color: #fff; transform: translateX(-4px) scale(1.08);
    background: var(--brand-grad); box-shadow: var(--shadow-lg);
}
.social-sidebar svg { width: 20px; height: 20px; fill: currentColor; }
.social-sidebar .fa { font-size: 1.15rem; }
.social-sidebar .bi { font-size: 1.1rem; }
.text-soft { color: var(--text-soft); }
.mono { font-family: Consolas, Menlo, monospace; direction: ltr; font-size: .82rem; }
.empty-state { color: var(--muted); text-align: center; padding: 3rem 1rem; }

/* === FORMS === */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block; margin-bottom: 6px;
    color: var(--text-secondary); font-size: 14px; font-weight: 500;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary); font-size: 14px;
    font-family: var(--font); outline: none;
    transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--text-muted);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-error { color: var(--danger); font-size: 13px; margin-bottom: 12px; }

/* ================================================================
   AUTH PAGES — ChatGPT style (centered minimal card)
   ================================================================ */
.auth-page {
    background: var(--bg-main); min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
}
.auth-container { width: 100%; max-width: 440px; padding: 24px; }
.auth-card { text-align: center; }
.auth-header { margin-bottom: 28px; }
.auth-header h1 {
    font-size: 28px; font-weight: 700; color: var(--text-primary);
    letter-spacing: -0.02em;
}
.auth-header p { color: var(--text-muted); margin-top: 8px; font-size: 14px; }
.auth-form { text-align: right; }
.auth-form .btn {
    margin-top: 8px; font-size: 14px; padding: 10px 20px;
    border-radius: var(--radius-pill); width: 100%;
}
.auth-footer {
    text-align: center; margin-top: 20px; font-size: 13px;
    color: var(--text-muted);
}
.auth-footer a { color: var(--text-primary); font-weight: 500; }
.auth-footer a:hover { text-decoration: underline; }

/* ================================================================
   LANDING / HOME — ChatGPT welcome state
   ================================================================ */
.landing { background: var(--bg-main); min-height: 100vh; }
.hero {
    min-height: 100vh; display: flex; align-items: center;
    justify-content: center; text-align: center; padding: 40px;
}
.hero-content { max-width: 640px; }
.logo-3d {
    font-size: 56px; font-weight: 800; color: var(--text-primary);
    letter-spacing: -0.03em;
}
.tagline { font-size: 18px; color: var(--text-secondary); margin-top: 12px; }
.desc {
    font-size: 15px; color: var(--text-muted); margin-top: 16px;
    line-height: 1.7; max-width: 480px; margin-left: auto; margin-right: auto;
}
.hero-buttons {
    margin-top: 28px; display: flex; gap: 10px; justify-content: center;
}
.hero-buttons .btn {
    padding: 10px 28px; font-size: 14px;
    border-radius: var(--radius-pill);
}
.features {
    display: flex; gap: 12px; justify-content: center;
    flex-wrap: wrap; margin-top: 40px;
}
.feature {
    background: var(--bg-card); padding: 20px; border-radius: var(--radius);
    width: 180px; text-align: center;
    border: 1px solid var(--border-subtle);
    transition: border-color var(--transition);
}
.feature:hover { border-color: var(--border); }
.feature h3 { font-size: 14px; color: var(--text-primary); margin-bottom: 4px; font-weight: 600; }
.feature p { color: var(--text-muted); font-size: 12px; line-height: 1.5; }

/* ================================================================
   CHAT LAYOUT — Two-column shell
   ================================================================ */
.chat-page { height: 100vh; overflow: hidden; display: flex; flex-direction: column; }
.chat-layout { display: flex; flex: 1; min-height: 0; }

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width); background: var(--bg-sidebar);
    backdrop-filter: blur(12px);
    border-left: 1px solid var(--card-border);
    display: flex; flex-direction: column;
    flex-shrink: 0;
}
.sidebar-header {
    padding: 10px; display: flex; flex-direction: column; gap: 4px;
    height: var(--header-height);
    display: flex; align-items: center;
}
.new-chat-btn {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 14px; border-radius: var(--radius-pill);
    background: var(--brand-grad); border: none;
    color: #fff; cursor: pointer;
    font-size: 14px; font-family: var(--font);
    transition: opacity var(--transition);
    width: 100%; box-shadow: var(--shadow);
}
.new-chat-btn:hover { opacity: 0.9; color: #fff; }
.new-chat-btn .icon { font-size: 16px; font-weight: 300; }

.conversation-list {
    flex: 1; overflow-y: auto; padding: 2px 8px;
}
.conv-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 10px; border-radius: var(--radius);
    color: var(--text-secondary); font-size: 14px;
    transition: background var(--transition);
    cursor: pointer; text-decoration: none;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.conv-item:hover { background: var(--hover-veil); color: var(--text-primary); }
.conv-item.active { background: var(--bg-active); color: var(--text-primary); }
.conv-title {
    flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.conv-delete {
    display: none; background: none; border: none;
    color: var(--text-muted); cursor: pointer; padding: 2px 6px;
    font-size: 14px; border-radius: var(--radius-sm);
}
.conv-item:hover .conv-delete { display: block; }
.conv-delete:hover { color: var(--danger); background: rgba(239,68,68,0.1); }

.sidebar-footer {
    padding: 10px; border-top: 1px solid var(--border-hairline);
    display: flex; flex-direction: column; gap: 2px;
}
.sidebar-footer a {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 10px; border-radius: var(--radius);
    color: var(--text-secondary); font-size: 14px;
    transition: background var(--transition);
}
.sidebar-footer a:hover { background: var(--hover-veil); color: var(--text-primary); }

/* --- Mobile menu: hamburger + drawer sidebar --- */
.mobile-menu-btn {
    display: none;
    width: 38px; height: 38px; flex: 0 0 38px;
    align-items: center; justify-content: center;
    background: var(--input-bg); border: 1px solid var(--input-border);
    border-radius: var(--radius); color: var(--text-primary);
    font-size: 18px; cursor: pointer; transition: all var(--transition);
}
.mobile-menu-btn:hover { border-color: var(--brand); color: var(--brand); }
.sidebar-mask {
    display: none; position: fixed; inset: 0; z-index: 1040;
    background: rgba(8, 12, 24, .55); backdrop-filter: blur(2px);
    opacity: 0; transition: opacity .25s ease;
}
.sidebar-mask { display: none; }
.sidebar-mask.show { display: block; opacity: 1; }

/* --- Chat Main Column --- */
.chat-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

/* --- Chat Header --- */
.chat-header {
    padding: 0 16px;
    display: flex; align-items: center; justify-content: space-between;
    background: var(--bg-main);
    height: var(--header-height);
    min-height: var(--header-height);
}
.chat-header-left { display: flex; align-items: center; gap: 10px; }
.chat-header-left h3 {
    font-size: 16px; font-weight: 600; color: var(--text-primary);
}
.header-actions { display: flex; gap: 4px; }

/* --- Agent Tabs (ChatGPT's model/mode switcher) --- */
.chat-controls {
    display: flex; gap: 8px; align-items: center;
    flex: 1; justify-content: center;
    flex-wrap: wrap;
}
.agent-tabs {
    display: flex; gap: 0;
    background: var(--soft-bg); border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    padding: 3px;
}
.agent-tab {
    padding: 5px 14px; border: none; border-radius: var(--radius-pill);
    background: transparent; color: var(--text-muted);
    font-size: 13px; font-weight: 500; cursor: pointer;
    transition: all var(--transition); font-family: var(--font);
    white-space: nowrap;
}
.agent-tab:hover { color: var(--text-secondary); }
.agent-tab.active {
    background: var(--brand-grad); color: #fff;
    box-shadow: var(--shadow);
}

/* --- Model Selectors --- */
.model-select {
    padding: 5px 12px;
    background: var(--input-bg); border: 1px solid var(--input-border);
    border-radius: 12px;
    color: var(--text); font-size: 13px;
    font-family: var(--font); outline: none; cursor: pointer;
    max-width: 170px;
    transition: border-color var(--transition);
    appearance: auto;
}
.model-select:hover { border-color: var(--brand); }
.model-select option { background: var(--bg-sidebar); color: var(--text); }

/* ================================================================
   AISURE-STYLE — Model pills bar + suggestion chips (additive)
   ================================================================ */
.model-pills-bar {
    display: flex;
    padding: 6px 16px 2px;
    background: var(--bg-main);
    overflow-x: auto; scrollbar-width: thin;
}
.model-pills-bar::-webkit-scrollbar { height: 4px; }
.model-pills-bar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.model-pills {
    display: flex; align-items: center; gap: 8px;
    margin: 0 auto; flex: none;
    padding-bottom: 4px;
}
.model-pill-group {
    display: flex; align-items: center; gap: 6px;
    flex-shrink: 0; padding-left: 4px;
}
.model-pill-group + .model-pill-group {
    border-left: 1px solid var(--border-hairline);
    padding-right: 12px;
}
.model-pill-group-label {
    font-size: 11px; font-weight: 600; color: var(--text-muted);
}
.model-pill {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 12px; border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--input-bg); color: var(--text-soft);
    font-size: 12.5px; font-family: var(--font); cursor: pointer;
    white-space: nowrap; transition: all var(--transition);
}
.model-pill:hover { border-color: var(--brand); color: var(--text-primary); }
.model-pill.active {
    background: var(--brand-grad); color: #fff; border-color: transparent;
    box-shadow: var(--shadow);
}
.model-pill .pill-free { font-size: 10px; opacity: .85; }

.suggestion-chips {
    display: flex; flex-wrap: wrap; gap: 8px;
    max-width: var(--chat-max-width); margin: 10px auto 0;
    justify-content: center;
}
.suggestion-chip {
    padding: 6px 14px; border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--input-bg); color: var(--text-soft);
    font-size: 13px; font-family: var(--font); cursor: pointer;
    transition: all var(--transition);
}
.suggestion-chip:hover { border-color: var(--brand); color: var(--text-primary); background: var(--hover); }

/* ================================================================
   AGENTS GALLERY — AISure-style specialist agent cards (additive)
   ================================================================ */
.agents-gallery {
    padding: 14px 16px 10px;
    background: var(--bg-main);
    border-bottom: 1px solid var(--border-hairline);
}
.agents-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px; max-width: var(--chat-max-width); margin: 0 auto;
}
.agent-card {
    display: flex; flex-direction: column; gap: 4px; text-align: right;
    padding: 12px 14px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--card-bg, var(--input-bg));
    color: var(--text-soft); font-size: 12.5px; font-family: var(--font);
    cursor: pointer; transition: all var(--transition); line-height: 1.6;
}
.agent-card:hover { border-color: var(--brand); color: var(--text-primary); transform: translateY(-1px); }
.agent-card.active {
    background: var(--brand-grad); color: #fff; border-color: transparent;
    box-shadow: var(--shadow);
}
.agent-card.active .agent-card-desc { color: rgba(255,255,255,.85); }
.agent-card-icon { font-size: 20px; }
.agent-card-label { font-size: 13.5px; font-weight: 700; }
.agent-card-desc { font-size: 11.5px; color: var(--text-muted); }
.agents-gallery-hint {
    max-width: var(--chat-max-width); margin: 8px auto 0;
    font-size: 11.5px; color: var(--text-muted);
}

/* ================================================================
   CODE LAB — AISure-style code panel (additive)
   ================================================================ */
.code-lab-panel {
    padding: 14px 16px 12px;
    background: var(--bg-main);
    border-bottom: 1px solid var(--border-hairline);
}
.code-lab-modes {
    display: flex; flex-wrap: wrap; gap: 6px;
    max-width: var(--chat-max-width); margin: 0 auto 10px;
}
.code-lab-mode {
    padding: 5px 12px; font-size: 12px; font-family: var(--font);
    color: var(--text-soft); background: var(--input-bg);
    border: 1px solid var(--border); border-radius: 999px; cursor: pointer;
    transition: all var(--transition);
}
.code-lab-mode:hover { border-color: var(--brand); color: var(--text-primary); }
.code-lab-mode.active {
    background: var(--brand-grad); color: #fff; border-color: transparent;
    box-shadow: var(--shadow);
}
.code-lab-input-row {
    display: flex; gap: 8px; align-items: flex-end;
    max-width: var(--chat-max-width); margin: 0 auto;
}
.code-lab-input-row textarea {
    flex: 1; resize: vertical; min-height: 64px; max-height: 200px;
    padding: 10px 12px; font-size: 13px; line-height: 1.7;
    font-family: var(--font); color: var(--text-primary);
    background: var(--input-bg); border: 1px solid var(--border);
    border-radius: var(--radius); outline: none;
}
.code-lab-input-row textarea:focus { border-color: var(--brand); }
.code-lab-input-row .send-btn {
    width: 42px; height: 42px; flex: 0 0 42px;
    display: inline-flex; align-items: center; justify-content: center;
}
.code-lab-output {
    max-width: var(--chat-max-width); margin: 12px auto 0;
    border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; background: var(--card-bg, var(--input-bg));
}
.code-lab-output-head {
    display: flex; align-items: center; justify-content: space-between;
    gap: 8px; padding: 8px 12px;
    border-bottom: 1px solid var(--border-hairline);
}
.code-lab-status { font-size: 12px; color: var(--text-muted); }
.code-lab-pre {
    margin: 0; padding: 12px 14px; max-height: 380px; overflow: auto;
    font-family: 'Consolas', 'Menlo', monospace; font-size: 12.5px;
    line-height: 1.7; color: var(--text-primary);
    white-space: pre-wrap; word-break: break-word; direction: ltr;
    text-align: left;
}
.code-lab-pre code { font-family: inherit; }

/* ================================================================
   TOOL PAGES — Translator / Presentations / Analytics (additive)
   ================================================================ */
.tool-nav {
    padding: 8px 12px;
    display: flex; flex-direction: column; gap: 4px;
    border-bottom: 1px solid var(--border-hairline);
}
.tool-nav-item {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 10px; border-radius: var(--radius);
    font-size: 13px; color: var(--text-soft); text-decoration: none;
    transition: all var(--transition);
}
.tool-nav-item:hover { background: var(--input-bg); color: var(--text-primary); }
.tool-nav-item.active {
    background: var(--brand-grad); color: #fff;
    box-shadow: var(--shadow);
}
.tool-nav-item i { font-size: 15px; }

.tool-workspace {
    flex: 1; overflow-y: auto; padding: 20px;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 18px; max-width: 1400px; width: 100%; margin: 0 auto;
}
@media (max-width: 900px) {
    .tool-workspace { grid-template-columns: 1fr; }
}
.tool-panel {
    background: var(--card-bg, var(--input-bg));
    border: 1px solid var(--border); border-radius: var(--radius-lg, var(--radius));
    padding: 16px; display: flex; flex-direction: column; gap: 12px;
    box-shadow: var(--shadow);
    min-height: 420px;
}
.tool-language-row {
    display: flex; align-items: center; gap: 8px;
}
.tool-select {
    flex: 1; min-width: 0; padding: 8px 10px;
    font-size: 13px; font-family: var(--font); color: var(--text-primary);
    background: var(--input-bg); border: 1px solid var(--border);
    border-radius: var(--radius); outline: none; cursor: pointer;
}
.tool-select:focus { border-color: var(--brand); }
.tool-swap-btn {
    flex: 0 0 36px; width: 36px; height: 36px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 16px; color: var(--text-soft);
    background: var(--input-bg); border: 1px solid var(--border);
    border-radius: var(--radius); cursor: pointer;
    transition: all var(--transition);
}
.tool-swap-btn:hover { border-color: var(--brand); color: var(--brand); }
.tool-input-panel textarea.tool-input,
.tool-input-panel > textarea {
    flex: 1; resize: vertical; min-height: 160px;
    padding: 12px; font-size: 14px; line-height: 1.8;
    font-family: var(--font); color: var(--text-primary);
    background: var(--input-bg); border: 1px solid var(--border);
    border-radius: var(--radius); outline: none;
}
.tool-input-panel > textarea:focus { border-color: var(--brand); }
.tool-actions {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.tool-char-count, .tool-hint { font-size: 12px; color: var(--text-muted); }
.tool-hint i { color: var(--brand); }
.tool-panel .send-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 18px; font-size: 13px; font-family: var(--font); font-weight: 600;
}
.tool-output-panel { min-width: 0; }
.tool-output-head {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    padding-bottom: 10px; border-bottom: 1px solid var(--border-hairline);
}
.tool-status { font-size: 12px; color: var(--text-muted); }
.tool-pre {
    flex: 1; margin: 0; padding: 14px; overflow: auto;
    font-family: 'Vazirmatn', 'Consolas', 'Menlo', monospace;
    font-size: 13.5px; line-height: 1.9; color: var(--text-primary);
    white-space: pre-wrap; word-break: break-word;
    background: var(--input-bg); border: 1px solid var(--border);
    border-radius: var(--radius);
}
.tool-pre code { font-family: inherit; }
.tool-pre .tool-error { color: #f87171; }

/* --- Presentations --- */
.tool-form-group { display: flex; flex-direction: column; gap: 6px; }
.tool-label { font-size: 12.5px; color: var(--text-soft); font-weight: 600; }
.tool-input {
    padding: 10px 12px; font-size: 13.5px; font-family: var(--font);
    color: var(--text-primary); background: var(--input-bg);
    border: 1px solid var(--border); border-radius: var(--radius); outline: none;
}
.tool-input:focus { border-color: var(--brand); }
.tool-form-row { display: flex; gap: 10px; }
.tool-form-row .tool-form-group { flex: 1; }
.ppt-output { gap: 12px; }
.ppt-actions { display: flex; gap: 6px; }
.ppt-view {
    flex: 1; display: flex; align-items: center; justify-content: center;
    background: var(--input-bg); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 20px; min-height: 260px;
    overflow: auto;
}
.ppt-slide {
    width: 100%; max-width: 720px; min-height: 240px;
    background: var(--bg-main); border: 1px solid var(--border);
    border-radius: var(--radius-lg, var(--radius));
    padding: 28px 32px; display: flex; flex-direction: column; gap: 14px;
    box-shadow: var(--shadow);
}
.ppt-slide h2 {
    font-size: 22px; font-weight: 800; color: var(--text-primary);
    padding-bottom: 10px; border-bottom: 3px solid var(--brand-grad);
    background: var(--brand-grad);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.ppt-slide ul { margin: 0; padding-right: 20px; display: flex; flex-direction: column; gap: 10px; }
.ppt-slide li {
    font-size: 14.5px; line-height: 1.9; color: var(--text-soft);
}
.ppt-slide-empty {
    display: flex; align-items: center; justify-content: center;
    height: 100%; min-height: 180px; text-align: center;
    font-size: 13px; color: var(--text-muted);
}
.ppt-slide-num {
    margin-top: auto; align-self: flex-end; font-size: 12px; color: var(--text-muted);
}
.ppt-nav {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.ppt-counter { font-size: 12.5px; color: var(--text-muted); }

/* --- Analytics --- */
.an-output {
    flex: 1; overflow-y: auto; padding: 4px 2px;
    display: flex; flex-direction: column; gap: 10px;
}
.an-empty {
    display: flex; align-items: center; justify-content: center;
    height: 100%; min-height: 200px; text-align: center;
    font-size: 13px; color: var(--text-muted);
}
.an-section {
    font-size: 16px; font-weight: 800; color: var(--brand);
    padding: 8px 12px; border-radius: var(--radius);
    background: var(--input-bg); border-right: 4px solid var(--brand);
}
.an-sub { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-top: 4px; }
.an-bullet {
    display: flex; align-items: flex-start; gap: 8px;
    font-size: 13.5px; line-height: 1.8; color: var(--text-soft);
}
.an-bullet i { color: var(--brand); margin-top: 3px; flex-shrink: 0; }
.an-num span {
    flex: 0 0 22px; width: 22px; height: 22px; border-radius: 50%;
    background: var(--brand-grad); color: #fff; font-size: 12px; font-weight: 700;
    display: inline-flex; align-items: center; justify-content: center; margin-top: 3px;
}
.an-text { font-size: 13.5px; line-height: 1.9; color: var(--text-soft); }
.an-text strong, .an-section strong, .an-sub strong { color: var(--text-primary); }
.an-table-row {
    display: flex; gap: 6px; padding: 6px 8px;
    border-bottom: 1px solid var(--border-hairline); font-size: 12.5px;
}
.an-table-row span { flex: 1; color: var(--text-soft); }
.an-spacer { height: 6px; }
.an-output code {
    background: var(--input-bg); border: 1px solid var(--border);
    padding: 1px 5px; border-radius: 4px; font-size: 12px;
    font-family: 'Consolas', 'Menlo', monospace;
}

/* ================================================================
   CHAT MESSAGES — Centered, clean, no borders between messages
   ================================================================ */
.chat-messages {
    flex: 1; overflow-y: auto; padding: 0;
    display: flex; flex-direction: column;
}
.messages-container {
    max-width: var(--chat-max-width); width: 100%; margin: 0 auto;
    padding: 16px 24px;
}

/* --- Message --- */
.message {
    padding: 20px 0;
}
.message + .message { margin-top: 0; }

.message-label {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 8px;
}
.message-label .avatar {
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 600; flex-shrink: 0;
}
.message.user .message-label .avatar {
    background: var(--text-soft); color: #fff;
}
.message.assistant .message-label .avatar {
    background: var(--brand-grad); color: #fff;
}
.message-label .name {
    font-size: 14px; font-weight: 600; color: var(--text-primary);
}

.message-content {
    font-size: 15px; line-height: 1.7;
    color: var(--text-primary); padding-left: 38px;
    word-wrap: break-word;
}
.message-content p { margin-bottom: 10px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content code {
    background: var(--bg-code); padding: 2px 6px;
    border-radius: 4px; font-size: 13px;
    font-family: var(--font-mono);
}
.message-content pre {
    background: var(--bg-code); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm); padding: 14px;
    margin: 12px 0; overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px; line-height: 1.5; color: var(--text-secondary);
    position: relative;
}
.message-content pre code { background: transparent; padding: 0; font-size: inherit; }
.message-content ul, .message-content ol { padding-right: 20px; margin: 8px 0; }
.message-content li { margin-bottom: 4px; }
.message-content li::marker { color: var(--text-muted); }
.message-content strong { color: var(--text-primary); font-weight: 600; }
.message-content em { font-style: italic; }
.message-content a { color: var(--text-primary); text-decoration: underline; }
.message-content blockquote {
    border-right: 3px solid var(--border);
    padding-right: 12px; margin: 8px 0;
    color: var(--text-secondary);
}
.message-content h1, .message-content h2, .message-content h3 {
    color: var(--text-primary); font-weight: 600; margin: 16px 0 8px;
}
.message-content h1 { font-size: 22px; }
.message-content h2 { font-size: 18px; }
.message-content h3 { font-size: 16px; }
.message-content table {
    border-collapse: collapse; width: 100%; margin: 12px 0;
    font-size: 13px;
}
.message-content th, .message-content td {
    border: 1px solid var(--border); padding: 8px 12px; text-align: right;
}
.message-content th { background: var(--bg-card); font-weight: 600; }
.message-content hr {
    border: none; border-top: 1px solid var(--border-subtle);
    margin: 16px 0;
}

/* ================================================================
   COMPOSER — ChatGPT rounded pill input bar
   ================================================================ */
.chat-input {
    padding: 0 0 8px;
    background: var(--bg-main);
}
.input-container {
    max-width: var(--chat-max-width); width: 100%; margin: 0 auto;
    padding: 0 24px;
}
.chat-input form {
    display: flex; align-items: flex-end; gap: 0;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 6px 6px 6px 16px;
    transition: border-color var(--transition);
}
.chat-input form:focus-within { border-color: var(--text-muted); }

.chat-input textarea {
    flex: 1; padding: 8px 0; border: none; outline: none;
    background: transparent; color: var(--text-primary);
    font-size: 15px; font-family: var(--font);
    resize: none; line-height: 1.5;
    max-height: 200px; min-height: 24px;
}
.chat-input textarea::placeholder { color: var(--text-muted); }

.input-actions { display: flex; align-items: center; gap: 4px; }
.char-count { font-size: 11px; color: var(--text-muted); margin-right: 2px; }

/* Send button — gradient circle */
.send-btn {
    width: 34px; height: 34px; border: none; border-radius: 50%;
    background: var(--brand-grad); color: #fff;
    cursor: pointer; display: flex; align-items: center;
    justify-content: center; transition: opacity var(--transition);
    flex-shrink: 0; box-shadow: var(--shadow);
}
.send-btn:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none; }
.send-btn:not(:disabled):hover { opacity: 0.9; }
.send-btn svg { width: 16px; height: 16px; }

.input-disclaimer {
    text-align: center; font-size: 12px; color: var(--text-muted);
    margin-top: 8px;
    max-width: var(--chat-max-width); margin-left: auto; margin-right: auto;
}

/* ================================================================
   STATUS BAR — Minimal bottom bar
   ================================================================ */
.status-bar {
    display: flex; gap: 16px; padding: 4px 16px;
    background: var(--bg-main);
    font-size: 11px; color: var(--text-muted);
    justify-content: center;
}
.status-item { display: flex; align-items: center; gap: 4px; }

/* ================================================================
   TOOL CALLS — Collapsible, clean
   ================================================================ */
.tool-call {
    margin: 12px 0; margin-left: 38px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm); overflow: hidden;
    background: var(--bg-sidebar);
}
.tool-header {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 12px; cursor: pointer;
    transition: background var(--transition); user-select: none;
}
.tool-header:hover { background: var(--hover-veil); }
.tool-icon { font-size: 14px; }
.tool-name { font-size: 13px; font-weight: 500; color: var(--text-primary); }
.tool-status { font-size: 12px; margin-right: auto; }
.tool-status.running { color: var(--warning); }
.tool-status.success { color: var(--success); }
.tool-status.error { color: var(--danger); }
.tool-toggle {
    font-size: 10px; color: var(--text-muted);
    transition: transform 0.2s;
}
.tool-call.expanded .tool-toggle { transform: rotate(90deg); }
.tool-body {
    display: none; padding: 0 12px 10px;
    border-top: 1px solid var(--border-subtle);
}
.tool-call.expanded .tool-body { display: block; }
.tool-args pre, .tool-result pre {
    background: var(--bg-code); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm); padding: 10px 12px;
    font-size: 12px; font-family: var(--font-mono);
    color: var(--text-secondary); overflow-x: auto;
    margin: 6px 0; white-space: pre-wrap; word-break: break-all;
    max-height: 300px; overflow-y: auto;
}
.tool-result pre.error { color: var(--danger); border-color: rgba(239,68,68,0.3); }

/* ================================================================
   ADMIN PANEL
   ================================================================ */
.admin-page { min-height: 100vh; }
.admin-layout { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: var(--sidebar-width); background: var(--bg-sidebar);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex; flex-direction: column;
}
.sidebar-brand {
    padding: 16px; border-bottom: 1px solid var(--border-hairline);
}
.sidebar-brand h2 { color: var(--text-primary); font-size: 16px; font-weight: 700; }
.sidebar-brand span { color: var(--text-muted); font-size: 12px; }
.admin-nav { flex: 1; padding: 8px; overflow-y: auto; }
.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 12px; border-radius: var(--radius);
    color: var(--text-secondary); margin-bottom: 2px;
    font-size: 14px; transition: all var(--transition);
    text-decoration: none;
}
.nav-item:hover { background: var(--hover-veil); color: var(--text-primary); }
.nav-item.active { background: var(--bg-active); color: var(--text-primary); }
.admin-sidebar-footer {
    padding: 12px; border-top: 1px solid var(--border-hairline);
    font-size: 12px; display: flex; flex-direction: column; gap: 4px;
}

.admin-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.admin-header {
    padding: 12px 24px;
    border-bottom: 1px solid var(--card-border);
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; position: sticky; top: 0; z-index: 20;
}
.admin-header h1 { font-size: 18px; font-weight: 600; }
.admin-content { padding: 24px; flex: 1; min-width: 0; }

/* --- Stats --- */
.stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px; margin-bottom: 24px;
}
.stat-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius); padding: 20px; text-align: center;
    transition: border-color var(--transition);
}
.stat-card:hover { border-color: var(--border); }
.stat-card h2 { font-size: 28px; color: var(--text-primary); margin-bottom: 4px; font-weight: 700; }
.stat-card span { color: var(--text-muted); font-size: 12px; }

/* --- Tables --- */
.data-table, .admin-content table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td,
.admin-content table th, .admin-content table td {
    padding: 10px 14px; text-align: right;
    border-bottom: 1px solid var(--border-subtle); font-size: 13px;
    vertical-align: top; word-break: break-word;
}
.data-table th, .admin-content table th {
    color: var(--text-muted); font-weight: 500;
    background: var(--bg-sidebar);
}
.data-table tr:hover, .admin-content table tr:hover { background: var(--hover-veil); }

/* --- Cards --- */
.card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius); padding: 20px; margin-bottom: 12px;
}
.card h3 {
    margin-bottom: 12px; color: var(--text-primary);
    font-size: 14px; font-weight: 600;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* --- Badges --- */
.badge {
    display: inline-block; padding: 2px 8px;
    border-radius: var(--radius); font-size: 11px; font-weight: 500;
    background: var(--hover-veil); color: var(--text-secondary);
}
.badge-success { background: rgba(16,185,129,0.15); color: var(--success); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-info { background: rgba(139,139,139,0.15); color: var(--text-secondary); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }

/* ================================================================
   ERROR PAGE — Minimal
   ================================================================ */
.error-page { text-align: center; padding: 80px 24px; }
.error-page h1 {
    font-size: 80px; font-weight: 700; color: var(--text-primary);
    margin: 0;
}
.error-page p { color: var(--text-muted); margin: 12px 0 24px; font-size: 15px; }
.error-page a {
    display: inline-block; padding: 10px 24px;
    border-radius: var(--radius-pill);
    background: var(--text-primary); color: var(--bg-main);
    font-weight: 600; font-size: 14px;
}
.error-page a:hover { opacity: 0.85; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1000px) {
    .chat-header {
        height: auto; min-height: auto;
        padding: 8px 12px; row-gap: 8px;
        flex-wrap: wrap;
    }
    .chat-controls {
        display: grid; grid-template-columns: 1fr;
        row-gap: 8px; flex: none; width: 100%;
        justify-content: stretch;
    }
    .chat-controls .agent-tabs {
        overflow-x: auto; width: 100%;
        justify-content: flex-start; scrollbar-width: thin;
    }
    .model-select { max-width: 100%; }
    .model-pills-bar { padding: 6px 12px 2px; }
    .code-lab-modes { overflow-x: auto; }
}

@media (max-width: 768px) {
    html { overflow-x: hidden; }
    .mobile-menu-btn { display: inline-flex; }
    .sidebar {
        display: flex;
        position: fixed; top: 0; bottom: 0; right: 0; z-index: 1050;
        width: min(300px, 84vw);
        transform: translateX(105%);
        transition: transform .28s ease, box-shadow .28s ease;
        box-shadow: var(--shadow-lg);
        visibility: hidden;
    }
    .sidebar.mobile-open { transform: translateX(0); visibility: visible; }
    .admin-sidebar { display: none; }
    .grid-2 { grid-template-columns: 1fr; }
    .admin-content { padding: 16px; }
    .admin-content .card { overflow-x: auto; }
    .chat-controls { flex-wrap: nowrap; }
    .model-select { max-width: 100%; }
    .messages-container { padding: 12px 14px; }
    .input-container { padding: 0 12px; }
    .message-content { padding-left: 0; margin-top: 6px; }
    .hero-content .logo-3d { font-size: 40px; }
    .features { flex-direction: column; align-items: center; }
    .tool-call { margin-left: 0; }
    .chat-header-left h3 { font-size: 14px; }
    .app-header { padding: .5rem .75rem; }
    .app-header-actions .brand-chip { display: none; }
    .chat-header { flex-wrap: wrap; row-gap: 6px; }
    .chat-controls { flex-basis: 100%; max-width: 100%; }
}

@media (max-width: 767.98px) {
    .chat-page .social-sidebar { display: none; }
}

@media (max-width: 575.98px) {
    .social-sidebar { padding: .4rem .28rem; gap: .35rem; }
    .social-sidebar a { width: 31px; height: 31px; border-radius: 9px; }
    .navbar-brand-lg { font-size: 1.1rem; }
    .brand-chip { font-size: .7rem; padding: .28rem .65rem; }
    .chat-header { padding: 8px 10px; }
    .agent-tab { padding: 5px 10px; font-size: 12px; }
    .chat-header-left h3 { max-width: 42vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .status-bar { gap: 4px; }
    .status-item { font-size: 11px; }
    .suggestion-chips { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; }
    .suggestion-chip { flex: 0 0 auto; font-size: 12px; padding: 7px 12px; }
    .input-disclaimer { font-size: 10px; }
    .app-header-actions .btn { padding: .35rem .6rem; font-size: .78rem; }
    .code-lab-mode { padding: 6px 10px; font-size: 12px; }
    .tool-workspace { padding: 12px; }
    .tool-actions { flex-wrap: wrap; }
    .tool-panel { min-height: 320px; }
    .pwa-install-banner { flex-wrap: wrap; justify-content: center; text-align: center; padding: 12px 16px; }
}

/* ================================================================
   LOADING
   ================================================================ */
.loading {
    display: inline-block; width: 18px; height: 18px;
    border: 2px solid var(--border); border-top-color: var(--text-primary);
    border-radius: 50%; animation: spin 0.6s linear infinite;
}
.spinner-border {
    display: inline-block; width: 1rem; height: 1rem;
    border: 2px solid rgba(255,255,255,.35); border-top-color: #fff;
    border-radius: 50%; animation: spin 0.6s linear infinite;
    vertical-align: -2px;
}
.spinner-border-sm { width: .75rem; height: .75rem; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ================================================================
   PWA INSTALL BANNER
   ================================================================ */
.pwa-install-banner {
    display: none; position: fixed; bottom: 20px; left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg); border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
    border-radius: 16px; padding: 14px 20px;
    z-index: 10000; box-shadow: var(--shadow-lg);
    align-items: center; gap: 14px; max-width: 440px;
    width: calc(100% - 40px);
}
.pwa-install-banner .pwa-icon {
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--brand-grad); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 900; flex-shrink: 0;
}
.pwa-install-banner .pwa-info { flex: 1; }
.pwa-install-banner .pwa-info h4 { font-size: 13px; color: var(--text-primary); margin-bottom: 2px; }
.pwa-install-banner .pwa-info p { font-size: 11px; color: var(--text-muted); }
.pwa-install-banner .pwa-actions { display: flex; gap: 8px; flex-shrink: 0; }
.pwa-install-banner .btn-pwa {
    padding: 6px 14px; border-radius: 10px; border: none;
    cursor: pointer; font-size: 12px; font-weight: 700;
}
.pwa-install-banner .btn-pwa-accept {
    background: var(--brand-grad); color: #fff;
}
.pwa-install-banner .btn-pwa-dismiss {
    background: transparent; color: var(--text-muted);
    border: 1px solid var(--border);
}

/* ================================================================
   PARSDIGITAL LOGO — Fixed top-right, 3x3cm
   ================================================================ */
.parsdigital-logo {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 9999;
    width: 113px;
    height: 113px;
    pointer-events: none;
}
.admin-page .parsdigital-logo { display: none; }
.parsdigital-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.85;
    transition: opacity 0.3s ease;
}
.parsdigital-logo img:hover {
    opacity: 1;
}

/* ================================================================
   REASONING BLOCK — "thinking" indicator while model reasons
   ================================================================ */
.reasoning-block .message-content {
    background: var(--bg-secondary, rgba(255,255,255,0.04));
    border: 1px dashed var(--border-color, rgba(255,255,255,0.12));
    border-radius: 12px;
    padding: 10px 14px;
    max-width: 100%;
}
.reasoning-label {
    font-size: 11px;
    color: var(--text-muted, #999);
    margin-inline-start: 8px;
}
.reasoning-text {
    font-size: 12px;
    color: var(--text-muted, #999);
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 160px;
    overflow-y: auto;
}

/* ================================================================
   MISC
   ================================================================ */
.system-msg {
    max-width: var(--chat-max-width); margin: 0 auto; padding: 8px 24px;
    text-align: center; font-size: 12px; color: var(--text-muted);
}