/* ══════════════════════════════════════════════════════════════════
   PHP Nano RAG — Design System
   Tema padrão: Cyberpunk (verde em fundo escuro)
   ══════════════════════════════════════════════════════════════════ */

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

:root {
    --primary:      #10b981;
    --primary-dk:   #059669;
    --primary-glow: rgba(16, 185, 129, 0.2);
    --bg:           #0d1117;
    --bg-2:         #161b22;
    --bg-3:         #1c2128;
    --border:       rgba(255,255,255,0.08);
    --border-bright:rgba(16, 185, 129, 0.3);
    --text:         #e6edf3;
    --text-muted:   #7d8590;
    --text-dim:     #484f58;
    --danger:       #f85149;
    --warning:      #f0883e;
    --shadow:       0 4px 20px rgba(0,0,0,0.4);
    --radius:       8px;
    --sidebar-w:    256px;
    --sources-w:    300px;
    --topbar-h:     56px;
}

/* ── Temas ────────────────────────────────────────────────────────── */
[data-theme="nebula"] {
    --primary: #8b5cf6; --primary-dk: #7c3aed;
    --primary-glow: rgba(139,92,246,0.2); --bg: #0d0b14; --bg-2: #13101c; --bg-3: #1a1527;
    --border-bright: rgba(139,92,246,0.3);
}
[data-theme="hacker-terminal"] {
    --primary: #00ff41; --primary-dk: #00cc33;
    --primary-glow: rgba(0,255,65,0.15); --bg: #000000; --bg-2: #050505; --bg-3: #0a0a0a;
    --border-bright: rgba(0,255,65,0.4);
}
[data-theme="sakura"] {
    --primary: #f472b6; --primary-dk: #ec4899;
    --primary-glow: rgba(244,114,182,0.2); --bg: #1a0a12; --bg-2: #22101a; --bg-3: #2a1522;
    --border-bright: rgba(244,114,182,0.3);
}
[data-theme="obsidian"] {
    --primary: #9ca3af; --primary-dk: #6b7280;
    --primary-glow: rgba(156,163,175,0.15); --bg: #111111; --bg-2: #1a1a1a; --bg-3: #222222;
    --border-bright: rgba(156,163,175,0.3);
}
[data-theme="solar-flare"] {
    --primary: #f59e0b; --primary-dk: #d97706;
    --primary-glow: rgba(245,158,11,0.2); --bg: #0f0900; --bg-2: #180e00; --bg-3: #221400;
    --border-bright: rgba(245,158,11,0.3);
}
[data-theme="arctic-wave"] {
    --primary: #0ea5e9; --primary-dk: #0284c7;
    --primary-glow: rgba(14,165,233,0.2); --bg: #030b12; --bg-2: #061018; --bg-3: #0a1a24;
    --border-bright: rgba(14,165,233,0.3);
}

/* ── Reset base ───────────────────────────────────────────────────── */
html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    overflow: hidden;
}

/* ── Scrollbar ───────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ══════════════════════════════════════════════════════════════════
   LOGIN (login.html — página standalone)
   ══════════════════════════════════════════════════════════════════ */
.login-card {
    background: var(--bg-2);
    border: 1px solid var(--border-bright);
    border-radius: 16px;
    padding: 40px 36px;
    width: 100%; max-width: 380px;
    box-shadow: 0 0 60px var(--primary-glow);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .icon { font-size: 42px; display: flex; justify-content: center; margin-bottom: 12px; }
.login-logo .icon svg { width: 48px; height: 48px; color: var(--primary); filter: drop-shadow(0 0 8px var(--primary-glow)); }
.login-logo h1 { font-size: 22px; color: var(--primary); font-weight: 700; }
.login-logo p { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.login-step { display: none; }
.login-step.active { display: block; }

.otp-display {
    font-size: 12px; color: var(--text-muted);
    margin-bottom: 14px; text-align: center;
}
.otp-display strong { color: var(--text); }

#otp-countdown {
    font-size: 12px; color: var(--text-muted);
    text-align: center; margin-bottom: 10px; min-height: 18px;
}

/* ══════════════════════════════════════════════════════════════════
   LAYOUT — 3 colunas (index.html)
   body é o flex container principal
   ══════════════════════════════════════════════════════════════════ */
body {
    display: flex;
    height: 100vh;
}

/* ── Engine init / Xenova progress ───────────────────────────────── */
#engine-init {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 14px; padding: 40px 24px; flex: 1;
}
.engine-progress-bar {
    width: 100%; max-width: 320px; height: 6px;
    background: var(--border); border-radius: 99px; overflow: hidden;
}
.engine-progress-fill {
    height: 100%; width: 0;
    background: var(--primary);
    border-radius: 99px;
    transition: width 0.3s ease;
    box-shadow: 0 0 8px var(--primary-glow);
}

/* ── Sidebar ──────────────────────────────────────────────────────── */
#sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    background: var(--bg-2);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.3s ease;
    z-index: 100;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-brand {
    font-size: 16px; font-weight: 700;
    color: var(--primary);
    flex: 1; letter-spacing: 1px;
}

.btn-new-chat {
    width: 100%; padding: 10px 14px;
    background: var(--primary-glow);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius);
    color: var(--primary);
    font-size: 13px; font-weight: 600;
    cursor: pointer;
    display: flex; align-items: center; gap: 8px;
    transition: all 0.2s;
    margin: 12px 12px 0;
    width: calc(100% - 24px);
}
.btn-new-chat:hover { background: var(--primary); color: #000; }

.sidebar-nav {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-top: 10px;
}
.sidebar-tab {
    flex: 1; padding: 8px 4px;
    background: none; border: none; border-bottom: 2px solid transparent;
    color: var(--text-muted); font-size: 12px; font-weight: 600;
    cursor: pointer; text-transform: uppercase; letter-spacing: 0.5px;
    transition: all 0.2s;
}
.sidebar-tab:hover { color: var(--text); }
.sidebar-tab.active { color: var(--primary); border-bottom-color: var(--primary); }

.sidebar-panel { display: none; flex: 1; overflow-y: auto; }
.sidebar-panel.active { display: flex; flex-direction: column; }

.conv-list { list-style: none; padding: 6px 8px; flex: 1; }
.conv-item {
    border-radius: var(--radius);
    cursor: pointer;
    display: flex; align-items: center; gap: 8px;
    padding: 8px 10px;
    margin-bottom: 2px;
    transition: background 0.15s;
    position: relative;
}
.conv-item:hover { background: var(--bg-3); }
.conv-item.active { background: var(--bg-3); border-left: 2px solid var(--primary); }
.conv-item .conv-icon { font-size: 14px; flex-shrink: 0; opacity: 0.7; }
.conv-item .conv-title {
    font-size: 13px; color: var(--text);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    flex: 1;
}
.conv-item:hover .conv-actions { display: flex; }
.conv-actions {
    display: none; gap: 4px; position: absolute; right: 8px;
}
.conv-action-btn {
    background: none; border: none; color: var(--text-muted);
    cursor: pointer; padding: 2px; font-size: 13px;
    border-radius: 4px;
    transition: all 0.15s;
}
.conv-action-btn:hover { color: var(--danger); background: rgba(248,81,73,0.1); }

.sidebar-empty {
    display: flex; flex-direction: column; align-items: center;
    justify-content: center; flex: 1; gap: 8px;
    color: var(--text-muted); font-size: 12px;
    padding: 20px; text-align: center;
}
.sidebar-empty .empty-icon { font-size: 28px; }

/* ── Knowledge list in sidebar ────────────────────────────────────── */
.kb-list { padding: 8px; flex: 1; }
.kb-item {
    padding: 8px 10px; border-radius: var(--radius);
    margin-bottom: 4px; cursor: pointer;
    border: 1px solid var(--border);
    transition: all 0.15s;
}
.kb-item:hover { border-color: var(--primary); background: var(--primary-glow); }
.kb-item-title { font-size: 12px; color: var(--text); font-weight: 500; }
.kb-item-meta { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}
.btn-admin-link {
    display: block; width: 100%;
    background: none; border: 1px solid var(--border);
    color: var(--text-muted); font-size: 12px;
    cursor: pointer; padding: 6px 10px;
    border-radius: 6px; text-decoration: none;
    text-align: center; transition: all 0.15s;
}
.btn-admin-link:hover { color: var(--accent); border-color: var(--accent); background: rgba(16,185,129,0.06); }

/* ── Main area ────────────────────────────────────────────────────── */
#main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Topbar */
#topbar {
    height: var(--topbar-h);
    min-height: var(--topbar-h);
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
}
.topbar-title { font-size: 14px; font-weight: 600; color: var(--text); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.btn-menu { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 6px; border-radius: 6px; display: none; }
.btn-menu:hover { background: var(--bg-3); }
.topbar-actions { display: flex; gap: 8px; }
.btn-icon {
    background: none; border: 1px solid var(--border);
    color: var(--text-muted); cursor: pointer;
    padding: 6px 10px; border-radius: var(--radius);
    font-size: 13px; transition: all 0.15s;
    display: flex; align-items: center; gap: 6px;
}
.btn-icon:hover { color: var(--primary); border-color: var(--primary); }
.btn-icon.active { color: var(--primary); border-color: var(--primary); background: var(--primary-glow); }

/* Content area (chat + sources) */
#content-area {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0;
}

/* ── Chat Area ────────────────────────────────────────────────────── */
#chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.chat-welcome {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center; padding: 40px 24px;
    gap: 16px;
}
.welcome-icon { font-size: 48px; }
.welcome-title { font-size: 22px; font-weight: 700; color: var(--text); }
.welcome-sub { font-size: 14px; color: var(--text-muted); max-width: 400px; }
.quick-starters { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 8px; }
.quick-start-btn {
    padding: 8px 14px; border-radius: 99px;
    border: 1px solid var(--border-bright);
    background: var(--primary-glow); color: var(--primary);
    font-size: 13px; cursor: pointer;
    transition: all 0.2s;
}
.quick-start-btn:hover { background: var(--primary); color: #000; }

#messages {
    flex: 1; overflow-y: auto;
    padding: 20px;
    display: flex; flex-direction: column; gap: 16px;
}

.message { display: flex; gap: 12px; max-width: 820px; }
.message.user { margin-left: auto; flex-direction: row-reverse; }
.message.assistant { margin-right: auto; }

.msg-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; flex-shrink: 0;
    background: var(--bg-3); border: 1px solid var(--border);
}
.message.user .msg-avatar { background: var(--primary-glow); border-color: var(--border-bright); }

.msg-bubble {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px; line-height: 1.65;
    max-width: 680px;
}
.message.user .msg-bubble {
    background: var(--primary);
    color: #000;
    border-radius: 12px 0 12px 12px;
    font-weight: 500;
}
.message.assistant .msg-bubble {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 0 12px 12px 12px;
    color: var(--text);
}
.msg-bubble code {
    background: var(--bg-3); padding: 1px 5px; border-radius: 4px;
    font-family: 'Fira Code', monospace; font-size: 12px;
}
.msg-bubble pre {
    background: var(--bg-3); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 12px; overflow-x: auto;
    margin: 8px 0;
}
.msg-bubble pre code { background: none; padding: 0; }

.msg-sources {
    margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px;
}
.source-chip {
    padding: 3px 8px; border-radius: 99px;
    background: var(--primary-glow); border: 1px solid var(--border-bright);
    color: var(--primary); font-size: 11px; cursor: pointer;
    transition: all 0.15s;
}
.source-chip:hover { background: var(--primary); color: #000; }

.msg-time { font-size: 11px; color: var(--text-dim); margin-top: 4px; text-align: right; }
.message.user .msg-time { text-align: right; }

/* Typing indicator */
.typing-indicator .msg-bubble {
    display: flex; align-items: center; gap: 4px;
    padding: 14px 16px;
}
.typing-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--primary); opacity: 0.4;
    animation: typing-bounce 1.2s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30%           { transform: translateY(-6px); opacity: 1; }
}

/* Input area */
#input-area {
    border-top: 1px solid var(--border);
    padding: 16px 20px;
    background: var(--bg);
}
.input-wrapper {
    display: flex; align-items: flex-end; gap: 10px;
    background: var(--bg-2); border: 1px solid var(--border);
    border-radius: 12px; padding: 10px 12px;
    transition: border-color 0.2s;
}
.input-wrapper:focus-within { border-color: var(--border-bright); }
#msg-input {
    flex: 1; background: none; border: none; outline: none;
    color: var(--text); font-size: 14px; line-height: 1.5;
    resize: none; max-height: 150px; min-height: 22px;
    font-family: inherit;
}
#msg-input::placeholder { color: var(--text-dim); }
.btn-send {
    width: 36px; height: 36px; border-radius: 8px;
    background: var(--primary); border: none;
    color: #000; font-size: 16px; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; transition: all 0.2s;
}
.btn-send:hover { background: var(--primary-dk); }
.btn-send:disabled { opacity: 0.4; cursor: not-allowed; }
.input-hint { font-size: 11px; color: var(--text-dim); margin-top: 6px; text-align: center; }

/* Ingest panel inside chat area */
#ingest-panel {
    flex: 1; overflow-y: auto;
    padding: 24px; display: none;
}
#ingest-panel.active { display: block; }

/* ── Sources Panel ────────────────────────────────────────────────── */
#sources-panel {
    width: var(--sources-w);
    min-width: var(--sources-w);
    background: var(--bg-2);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.3s ease;
}
#sources-panel.collapsed { width: 0; min-width: 0; overflow: hidden; }

.sources-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 8px;
}
.sources-header h3 { font-size: 13px; font-weight: 600; color: var(--text); flex: 1; }
.sources-count {
    background: var(--primary-glow); color: var(--primary);
    font-size: 11px; padding: 2px 6px; border-radius: 99px;
}
.sources-body { flex: 1; overflow-y: auto; padding: 12px; }

.source-card {
    background: var(--bg-3); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 12px;
    margin-bottom: 10px;
    transition: border-color 0.15s;
}
.source-card:hover { border-color: var(--border-bright); }
.source-card-title { font-size: 12px; font-weight: 600; color: var(--primary); margin-bottom: 4px; }
.source-card-excerpt { font-size: 12px; color: var(--text-muted); line-height: 1.5; margin-top: 6px; }
.source-full {
    font-size: 12px; color: var(--text-muted);
    line-height: 1.5; white-space: pre-wrap;
    word-break: break-word; margin-top: 6px;
}
.source-score {
    display: inline-block; margin-bottom: 4px;
    background: var(--primary-glow); color: var(--primary);
    font-size: 11px; padding: 1px 6px; border-radius: 99px;
}
.source-score-bar {
    height: 4px; background: var(--bg); border-radius: 2px;
    margin: 4px 0 2px; overflow: hidden;
}
.source-score-fill {
    height: 100%; border-radius: 2px;
    transition: width 0.4s ease;
}
.source-score-fill.score-high { background: #10b981; }
.source-score-fill.score-mid  { background: #f0883e; }
.source-score-fill.score-low  { background: var(--text-dim); }
.source-expand-btn {
    display: block; width: 100%;
    background: none; border: none;
    color: var(--primary); font-size: 11px;
    cursor: pointer; padding: 4px 0;
    text-align: left; opacity: 0.8;
}
.source-expand-btn:hover { opacity: 1; }

/* ── Modal de fonte (clique no chip) ─────────────────────────────── */
.source-modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.72);
    z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
    backdrop-filter: blur(4px);
    animation: src-fade 0.15s ease;
}
.source-modal-box {
    background: var(--bg-2);
    border: 1px solid var(--border-bright);
    border-radius: 12px;
    padding: 24px;
    max-width: 560px; width: 100%;
    max-height: 80vh; overflow-y: auto;
    box-shadow: 0 0 48px rgba(0,0,0,0.6);
    animation: src-up 0.2s ease;
}
.source-modal-header {
    display: flex; align-items: flex-start;
    justify-content: space-between; gap: 12px;
    margin-bottom: 10px;
}
.source-modal-title {
    font-size: 15px; font-weight: 700; color: var(--primary);
    line-height: 1.4;
}
.source-modal-close {
    background: none; border: none;
    color: var(--text-muted); font-size: 16px;
    cursor: pointer; padding: 2px 8px;
    border-radius: 4px; flex-shrink: 0;
    line-height: 1;
}
.source-modal-close:hover { color: var(--text); background: var(--bg-3); }
.source-modal-content {
    font-size: 13px; color: var(--text);
    line-height: 1.75; white-space: pre-wrap;
    word-break: break-word;
    margin-top: 12px; padding-top: 12px;
    border-top: 1px solid var(--border);
}
@keyframes src-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes src-up   { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.sources-empty {
    display: flex; flex-direction: column; align-items: center;
    padding: 32px 16px; text-align: center; gap: 8px;
    color: var(--text-muted); font-size: 12px;
}

/* ══════════════════════════════════════════════════════════════════
   INGEST FORM
   ══════════════════════════════════════════════════════════════════ */
.ingest-zone {
    border: 2px dashed var(--border);
    border-radius: 12px; padding: 40px 24px;
    text-align: center; cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 20px;
}
.ingest-zone:hover, .ingest-zone.drag-over {
    border-color: var(--primary); background: var(--primary-glow);
}
.ingest-zone .zone-icon { font-size: 36px; margin-bottom: 10px; }
.ingest-zone p { color: var(--text-muted); font-size: 13px; }
.ingest-zone strong { color: var(--primary); }

.ingest-preview {
    display: flex; align-items: center; gap: 12px;
    background: var(--bg-3); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 12px 16px;
    margin-bottom: 16px;
}
.ingest-preview img { max-height: 80px; border-radius: 4px; }
.ingest-preview-meta { flex: 1; }
.ingest-preview-name { font-size: 13px; font-weight: 600; color: var(--text); }
.ingest-preview-info { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.ocr-badge { display: inline-block; font-size: 11px; padding: 2px 6px; border-radius: 4px; margin-top: 4px; }
.ocr-badge.server { background: rgba(16,185,129,0.15); color: var(--primary); }
.ocr-badge.browser { background: rgba(245,158,11,0.15); color: var(--warning); }

.progress-bar {
    background: var(--border); border-radius: 99px; height: 6px;
    overflow: hidden; margin: 12px 0;
}
.progress-fill {
    height: 100%; border-radius: 99px;
    background: var(--primary);
    transition: width 0.3s ease;
}

/* ══════════════════════════════════════════════════════════════════
   FORMS & INPUTS (shared)
   ══════════════════════════════════════════════════════════════════ */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block; font-size: 12px; font-weight: 600;
    color: var(--text-muted); margin-bottom: 6px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.form-group .label-hint { font-size: 11px; font-weight: 400; color: var(--text-dim); text-transform: none; letter-spacing: 0; }
input[type="text"], input[type="email"], input[type="number"],
textarea, select {
    width: 100%; padding: 9px 12px;
    background: var(--bg-3); border: 1px solid var(--border);
    border-radius: var(--radius); color: var(--text);
    font-size: 13px; font-family: inherit;
    transition: border-color 0.2s; outline: none;
    appearance: none;
}
input[type="text"]:focus, input[type="email"]:focus, input[type="number"]:focus,
textarea:focus, select:focus { border-color: var(--border-bright); }
textarea { resize: vertical; min-height: 120px; }
select option { background: var(--bg-2); }

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
    padding: 9px 18px; border-radius: var(--radius);
    font-size: 13px; font-weight: 600;
    cursor: pointer; border: none;
    display: inline-flex; align-items: center; gap: 6px;
    transition: all 0.2s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #000; }
.btn-primary:hover { background: var(--primary-dk); }
.btn-outline {
    background: none; border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: none; border: 1px solid rgba(248,81,73,0.3); color: var(--danger); }
.btn-danger:hover { background: rgba(248,81,73,0.1); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ── Cards ────────────────────────────────────────────────────────── */
.card {
    background: var(--bg-2); border: 1px solid var(--border);
    border-radius: 12px; padding: 20px;
    margin-bottom: 16px;
}
.card-header {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.card-header h2 { font-size: 15px; font-weight: 600; color: var(--text); flex: 1; }

/* ── Toast ────────────────────────────────────────────────────────── */
#toast-container {
    position: fixed; bottom: 24px; right: 24px;
    display: flex; flex-direction: column; gap: 8px;
    z-index: 99999;
}
.toast {
    padding: 12px 18px; border-radius: var(--radius);
    font-size: 13px; font-weight: 500;
    animation: toast-in 0.3s ease;
    max-width: 320px;
}
.toast.success { background: var(--primary); color: #000; }
.toast.error { background: var(--danger); color: #fff; }
.toast.info { background: var(--bg-3); color: var(--text); border: 1px solid var(--border); }
@keyframes toast-in { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:none; } }

/* ── Spinner ──────────────────────────────────────────────────────── */
.spinner {
    display: inline-block; width: 16px; height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Overlay mobile ──────────────────────────────────────────────── */
#overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 90; display: none;
}
#overlay.active { display: block; }

/* ── SVG Icons Helper ────────────────────────────────────────────── */
.icon-svg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    flex-shrink: 0;
    width: 1.25em;
    height: 1.25em;
    stroke-width: 2;
    stroke: currentColor;
    fill: none;
    transition: transform 0.2s;
}
.btn:hover .icon-svg { transform: scale(1.1); }
.icon-svg-lg { width: 1.5em; height: 1.5em; }
.icon-svg-xl { width: 2em; height: 2em; }

/* ── Animations ──────────────────────────────────────────────────── */
@keyframes pulse-glow {
    0% { filter: drop-shadow(0 0 2px var(--primary-glow)); }
    50% { filter: drop-shadow(0 0 10px var(--primary-glow)); }
    100% { filter: drop-shadow(0 0 2px var(--primary-glow)); }
}
.animate-pulse { animation: pulse-glow 2s infinite ease-in-out; }

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
    #sources-panel { display: none; }
    #sources-panel.visible { display: flex; position: fixed; right: 0; top: 0; bottom: 0; z-index: 200; }
}

@media (max-width: 768px) {
    :root { --sidebar-w: 80vw; }

    #sidebar {
        position: fixed; left: 0; top: 0; bottom: 0;
        transform: translateX(-100%);
        z-index: 200;
    }
    #sidebar.open { transform: translateX(0); }
    .btn-menu { display: flex; }

    #sources-panel.visible { width: 100%; }
}