:root {
    --bg-main: #0a0a0f;
    --bg-panel: #12121a;
    --bg-panel-alt: #0e0e16;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(38, 132, 246, 0.25);
    --text-main: #e0e0e0;
    --text-sub: #7a7a85;
    --accent-green: #4af626;
    --accent-blue: #2684f6;
    --accent-red: #f6364a;
    --accent-yellow: #f6c026;
    --accent-purple: #a855f7;
    --accent-cyan: #06b6d4;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-sans);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ================= CHANGELOG MODAL ================= */
.changelog-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center;
    animation: fadeInOverlay 0.3s ease;
}
@keyframes fadeInOverlay { from { opacity: 0; } to { opacity: 1; } }

.changelog-modal {
    background: #0e0e18;
    border: 1px solid rgba(38, 132, 246, 0.3);
    border-radius: 12px;
    width: 540px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 80px rgba(38, 132, 246, 0.12), 0 30px 80px rgba(0,0,0,0.6);
    animation: slideUpModal 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    overflow: hidden;
}
@keyframes slideUpModal { from { transform: translateY(24px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.changelog-header {
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: flex-start; justify-content: space-between;
}
.changelog-badge {
    background: linear-gradient(135deg, #2684f6, #7c3aed);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 8px;
}
.changelog-header h2 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
}
.changelog-header p {
    font-size: 0.75rem;
    color: var(--text-sub);
    margin-top: 3px;
}
.changelog-close {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    color: var(--text-sub);
    width: 28px; height: 28px;
    border-radius: 6px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
    margin-top: 2px;
    transition: all 0.15s;
}
.changelog-close:hover { background: rgba(246,54,74,0.15); color: var(--accent-red); border-color: rgba(246,54,74,0.3); }

.changelog-body {
    padding: 20px 24px;
    overflow-y: auto;
    flex: 1;
}
.changelog-section { margin-bottom: 20px; }
.changelog-section:last-child { margin-bottom: 0; }
.changelog-section-title {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-sub);
    margin-bottom: 10px;
}
.changelog-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
}
.changelog-item:last-child { margin-bottom: 0; }
.cl-tag {
    font-size: 0.6rem;
    font-family: var(--font-mono);
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 3px;
    flex-shrink: 0;
    margin-top: 1px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.cl-tag.new { background: rgba(74, 246, 38, 0.15); color: var(--accent-green); }
.cl-tag.fix { background: rgba(246, 192, 38, 0.15); color: var(--accent-yellow); }
.cl-tag.imp { background: rgba(38, 132, 246, 0.15); color: var(--accent-blue); }
.cl-tag.sec { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }
.changelog-item-text { font-size: 0.78rem; color: var(--text-main); line-height: 1.4; }
.changelog-item-text span { color: var(--text-sub); font-size: 0.72rem; display: block; margin-top: 2px; }

.changelog-footer {
    padding: 14px 24px;
    border-top: 1px solid var(--border-color);
    display: flex; justify-content: flex-end; gap: 8px;
}
.btn-changelog-ok {
    background: var(--accent-blue);
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}
.btn-changelog-ok:hover { opacity: 0.85; }

/* ================= HEADER & NAV ================= */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.brand {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.brand span { color: var(--accent-blue); }

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-bar {
    display: flex;
    gap: 8px;
}

.input-group {
    display: flex;
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    transition: border-color 0.2s;
}
.input-group:focus-within { border-color: rgba(38,132,246,0.4); }

.input-group input {
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 7px 14px;
    width: 340px;
    font-family: var(--font-mono);
    font-size: 0.83rem;
    outline: none;
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    border: none;
    padding: 0 18px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.83rem;
    gap: 8px;
}
.btn-primary:hover { opacity: 0.85; }

/* Tab bar for tool panels */
.panel-tabs {
    display: flex;
    gap: 2px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 3px;
}
.panel-tab {
    background: transparent;
    border: none;
    color: var(--text-sub);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.15s;
    white-space: nowrap;
}
.panel-tab:hover { color: var(--text-main); background: rgba(255,255,255,0.04); }
.panel-tab.active { background: rgba(38,132,246,0.2); color: var(--accent-blue); }
.panel-tab .tab-dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.6;
}

/* ================= MAIN WORKSPACE ================= */
.workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

/* Sidebar & File Tree */
.sidebar {
    width: 260px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header input {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 5px 9px;
    border-radius: 4px;
    font-size: 0.78rem;
    outline: none;
    font-family: var(--font-mono);
    transition: border-color 0.2s;
}
.sidebar-header input:focus { border-color: rgba(38,132,246,0.4); }

.tree-container {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.node-group { margin-bottom: 4px; }
.node-header {
    padding: 5px 14px;
    font-size: 0.68rem;
    color: var(--text-sub);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    transition: color 0.15s;
}
.node-header:hover { color: var(--text-main); }
.node-header svg { transition: transform 0.2s; }
.node-group.collapsed .node-header svg { transform: rotate(0deg); }
.node-group:not(.collapsed) .node-header svg { transform: rotate(90deg); }
.node-children { display: block; }
.node-group.collapsed .node-children { display: none; }

.tree-item {
    padding: 5px 14px 5px 22px;
    font-size: 0.77rem;
    font-family: var(--font-mono);
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.1s;
}
.tree-item:hover { background: rgba(255,255,255,0.04); }
.tree-item.active { background: rgba(38, 132, 246, 0.12); border-left: 2px solid var(--accent-blue); padding-left: 20px; }
.tree-item-size { color: var(--text-sub); font-size: 0.65rem; }

/* ================= RIGHT PANEL (multi-tool) ================= */
.right-panel {
    width: 400px;
    background: var(--bg-panel);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.3s ease;
}
.right-panel.hidden { display: none !important; }
.right-panel-header {
    padding: 0 16px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.right-panel-tabs {
    display: flex;
    gap: 0;
}
.rp-tab {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-sub);
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.15s;
    white-space: nowrap;
}
.rp-tab:hover { color: var(--text-main); }
.rp-tab.active { color: var(--accent-blue); border-bottom-color: var(--accent-blue); }

.right-panel-close {
    background: transparent;
    border: none;
    color: var(--text-sub);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    transition: all 0.15s;
}
.right-panel-close:hover { color: var(--accent-red); }

.rp-content { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
.rp-pane { display: none; flex-direction: column; height: 100%; overflow: hidden; }
.rp-pane.active { display: flex; }

/* PREVIEW pane */
#sandboxFrame { flex: 1; border: none; background: #fff; }

/* SEO ANALYSER pane */
.seo-pane-inner { flex: 1; overflow-y: auto; padding: 14px; }
.seo-score-ring-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 0 10px;
    gap: 20px;
}
.seo-ring-svg { transform: rotate(-90deg); }
.seo-ring-track { fill: none; stroke: rgba(255,255,255,0.05); stroke-width: 8; }
.seo-ring-fill { fill: none; stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 0.8s cubic-bezier(0.4,0,0.2,1); }
.seo-score-label { text-align: center; }
.seo-score-number { font-size: 2rem; font-weight: 700; font-family: var(--font-mono); line-height: 1; }
.seo-score-text { font-size: 0.68rem; color: var(--text-sub); margin-top: 2px; text-transform: uppercase; letter-spacing: 1px; }
.seo-checks { list-style: none; }
.seo-check-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 7px 10px;
    border-radius: 5px;
    margin-bottom: 4px;
    border: 1px solid var(--border-color);
    background: rgba(0,0,0,0.15);
}
.seo-check-icon { flex-shrink: 0; margin-top: 1px; font-size: 0.75rem; }
.seo-check-label { font-size: 0.75rem; color: var(--text-main); line-height: 1.3; }
.seo-check-label small { color: var(--text-sub); font-size: 0.68rem; display: block; margin-top: 2px; }
.seo-check-item.pass { border-color: rgba(74,246,38,0.15); }
.seo-check-item.fail { border-color: rgba(246,54,74,0.15); }
.seo-check-item.warn { border-color: rgba(246,192,38,0.15); }
.seo-section-title {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-sub);
    margin: 14px 0 6px;
}

/* LINKS EXTRACTOR pane */
.links-pane-inner { flex: 1; overflow-y: auto; padding: 14px; }
.links-toolbar {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.link-filter-btn {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-color);
    color: var(--text-sub);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    transition: all 0.15s;
}
.link-filter-btn:hover { color: var(--text-main); }
.link-filter-btn.active { background: rgba(38,132,246,0.15); color: var(--accent-blue); border-color: rgba(38,132,246,0.3); }
.link-item {
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: rgba(0,0,0,0.15);
    margin-bottom: 3px;
    display: flex;
    align-items: center;
    gap: 7px;
}
.link-badge {
    font-size: 0.58rem;
    font-family: var(--font-mono);
    font-weight: 700;
    padding: 2px 5px;
    border-radius: 3px;
    flex-shrink: 0;
    text-transform: uppercase;
}
.link-badge.int { background: rgba(74,246,38,0.12); color: var(--accent-green); }
.link-badge.ext { background: rgba(38,132,246,0.12); color: var(--accent-blue); }
.link-badge.media { background: rgba(246,192,38,0.12); color: var(--accent-yellow); }
.link-badge.api { background: rgba(168,85,247,0.12); color: var(--accent-purple); }
.link-badge.form { background: rgba(6,182,212,0.12); color: var(--accent-cyan); }
.link-url {
    font-size: 0.7rem;
    font-family: var(--font-mono);
    color: var(--text-sub);
    word-break: break-all;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}
.link-url:hover { color: var(--text-main); }

/* DATA AUDIT pane */
.audit-pane-inner { flex: 1; overflow-y: auto; padding: 14px; }
.audit-section { margin-bottom: 16px; }
.audit-title {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-sub);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.audit-count-badge {
    background: rgba(246,54,74,0.15);
    color: var(--accent-red);
    font-size: 0.6rem;
    padding: 1px 5px;
    border-radius: 3px;
    font-weight: 700;
}
.audit-count-badge.clean { background: rgba(74,246,38,0.1); color: var(--accent-green); }
.audit-item {
    padding: 7px 10px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    background: rgba(0,0,0,0.15);
    margin-bottom: 4px;
    font-size: 0.72rem;
    font-family: var(--font-mono);
}
.audit-item.risk-high { border-color: rgba(246,54,74,0.25); }
.audit-item.risk-med { border-color: rgba(246,192,38,0.2); }
.audit-item.risk-low { border-color: rgba(74,246,38,0.15); }
.audit-item-label { color: var(--text-main); display: block; margin-bottom: 2px; }
.audit-item-value { color: var(--text-sub); font-size: 0.67rem; word-break: break-all; }
.audit-empty { color: var(--text-sub); font-size: 0.75rem; padding: 10px; text-align: center; font-style: italic; }

/* ================= EDITOR AREA ================= */
.editor-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-main);
    position: relative;
    min-width: 0;
}

.editor-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.editor-actions {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    gap: 0;
    flex-wrap: wrap;
    gap: 4px;
}

#active-filename {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent-blue);
    margin-right: auto;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-sub);
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-family: var(--font-sans);
    gap: 4px;
    transition: all 0.15s;
    white-space: nowrap;
}
.action-btn:hover { background: rgba(255,255,255,0.05); color: var(--text-main); }

.code-container {
    flex: 1;
    overflow: auto;
    padding: 16px 20px;
}

pre { margin: 0 !important; border-radius: 0 !important; background: transparent !important; }
code { font-family: var(--font-mono) !important; font-size: 0.82rem; line-height: 1.55; }

/* ================= INTERNAL SEARCH HUD ================= */
.internal-search-hud {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 2px 6px;
    gap: 6px;
    margin-right: 6px;
}
#scriptSearchInput {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-family: var(--font-mono);
    font-size: 0.73rem;
    width: 140px;
    transition: width 0.2s ease;
}
#scriptSearchInput:focus { width: 200px; }
.search-nav-controls { display: flex; align-items: center; gap: 3px; }
#searchMatchCounter { font-size: 0.63rem; color: var(--text-sub); font-family: var(--font-mono); min-width: 32px; text-align: center; }
.search-nav-controls button { background: transparent; border: none; color: var(--text-sub); cursor: pointer; font-size: 0.62rem; padding: 2px 4px; border-radius: 3px; }
.search-nav-controls button:hover { background: rgba(255,255,255,0.08); color: #fff; }

/* ================= TYPING INDICATOR ================= */
.typing-indicator-dot {
    width: 5px; height: 5px;
    background-color: var(--accent-green);
    border-radius: 50%; opacity: 0; flex-shrink: 0;
    transition: opacity 0.2s ease;
}
.tree-item.is-typing-active .typing-indicator-dot { opacity: 1; animation: diagnosticPulse 1.2s infinite ease-in-out; }
@keyframes diagnosticPulse {
    0% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(74,246,38,0.4); }
    50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 6px 2px rgba(74,246,38,0.7); }
    100% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(74,246,38,0.4); }
}

/* ================= UTILITIES ================= */
.hidden { display: none !important; }

.empty-state {
    position: absolute; inset: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--text-sub); font-size: 0.88rem; text-align: center; padding: 20px;
}

.spinner {
    border: 2px solid rgba(255,255,255,0.1);
    border-top: 2px solid var(--accent-blue);
    border-radius: 50%; width: 15px; height: 15px;
    animation: spin 0.8s linear infinite; display: none;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* ================= TERMINAL ================= */
.terminal-panel {
    height: 160px;
    background-color: #050508;
    border-top: 1px solid var(--border-color);
    padding: 8px 14px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    font-family: var(--font-mono);
}

#terminal-log {
    flex: 1;
    overflow-y: auto;
    font-size: 0.72rem;
    line-height: 1.6;
}

.log-row { margin: 0; }
.log-row.info { color: var(--text-sub); }
.log-row.success { color: var(--accent-green); }
.log-row.error { color: var(--accent-red); }
.log-row.warn { color: var(--accent-yellow); }
.log-row.audit { color: var(--accent-purple); }

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    border-top: 1px solid rgba(255,255,255,0.04);
    padding-top: 6px;
}
.prompt { color: var(--accent-green); font-size: 0.72rem; flex-shrink: 0; }
#terminalCliInput {
    background: transparent; border: none; outline: none;
    color: var(--text-main); font-family: var(--font-mono);
    font-size: 0.72rem; flex: 1;
}

/* ================= STATUS BAR ================= */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: 3px 16px;
    background: #07070c;
    border-top: 1px solid var(--border-color);
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-sub);
    flex-shrink: 0;
}
.status-indicators { display: flex; gap: 14px; }
.status-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent-green); display: inline-block; margin-right: 4px; }
.status-dot.warn { background: var(--accent-yellow); }

/* ================= EMPTY PANEL STATES ================= */
.panel-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-sub);
    font-size: 0.78rem;
    text-align: center;
    padding: 20px;
    gap: 8px;
}
.panel-empty svg { opacity: 0.3; }
.panel-empty p { opacity: 0.6; line-height: 1.5; }

/* ================= SCROLLBAR ================= */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }