/* ================================================================
   PHP Lab — Split-pane PHP code scanner
   ================================================================ */

/* ── Layout ─────────────────────────────────────────────────── */
.php-header { text-align: center; margin-bottom: var(--space-lg); }

.php-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.php-toolbar-left,
.php-toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.php-upload-btn { cursor: pointer; }

.php-version-label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}
.php-version-select {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  cursor: pointer;
}
.php-issue-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  background: var(--color-red);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 100px;
}
.php-issue-badge[hidden] { display: none; }

/* ── Split Pane ─────────────────────────────────────────────── */
.php-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border-color);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  overflow: hidden;
  min-height: 520px;
  max-height: 80vh;
}

/* ── Editor Pane (left) ─────────────────────────────────────── */
.php-editor-pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-color);
  background: var(--bg-primary);
}
.php-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.php-filename { font-family: var(--font-mono); font-weight: 600; }
.php-filesize { font-family: var(--font-mono); }

.php-editor-wrap {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}
.php-line-numbers {
  width: 48px;
  padding: 12px 8px 12px 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
  flex-shrink: 0;
}
.php-line-numbers .line-num {
  display: block;
  padding-right: 4px;
}
.php-line-numbers .line-num--error {
  color: var(--color-red);
  font-weight: 700;
  background: rgba(230, 57, 70, 0.12);
  border-radius: 2px;
}
.php-line-numbers .line-num--warning {
  color: var(--color-orange);
  font-weight: 700;
  background: rgba(247, 147, 30, 0.12);
  border-radius: 2px;
}

.php-code-input {
  flex: 1;
  resize: none;
  border: none;
  outline: none;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-primary);
  background: transparent;
  -moz-tab-size: 4;
  tab-size: 4;
  white-space: pre;
  overflow: auto;
}
.php-code-input::placeholder {
  color: var(--text-muted);
  white-space: normal;
}

/* Highlight line flash */
.php-code-input.highlight-flash {
  animation: lineFlash 1.5s ease;
}
@keyframes lineFlash {
  0%, 100% { background: transparent; }
  15% { background: rgba(178, 212, 48, 0.06); }
}

/* ── Issues Pane (right) ────────────────────────────────────── */
.php-issues-pane {
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  overflow: hidden;
}
.php-issues-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}
.php-issues-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.php-issues-filters {
  display: flex;
  gap: 2px;
}
.php-filter-btn {
  padding: 3px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.php-filter-btn:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }
.php-filter-btn--active {
  color: var(--color-lime);
  border-color: rgba(178, 212, 48, 0.3);
  background: rgba(178, 212, 48, 0.08);
}

/* Summary bar */
.php-summary {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
  font-weight: 600;
  flex-wrap: wrap;
}
.php-summary[hidden] { display: none; }
.php-summary-item { display: inline-flex; align-items: center; gap: 4px; }
.php-summary--critical { color: var(--color-red); }
.php-summary--warning  { color: var(--color-orange); }
.php-summary--security { color: #E040FB; }
.php-summary--info     { color: var(--color-teal); }
#php-export-btn { margin-left: auto; }

/* Issues list */
.php-issues-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-sm);
}

/* Empty state */
.php-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--text-muted);
}
.php-empty-icon { font-size: 3rem; margin-bottom: var(--space-md); opacity: 0.4; }
.php-empty-state p { margin-bottom: var(--space-sm); font-size: 0.9rem; }
.php-empty-hint { font-size: 0.8rem; opacity: 0.7; max-width: 320px; }

/* Issue card */
.php-issue-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  background: var(--bg-card);
  transition: border-color var(--transition-fast);
  overflow: hidden;
}
.php-issue-card:hover { border-color: rgba(178, 212, 48, 0.3); }
.php-issue-card--critical { border-left: 3px solid var(--color-red); }
.php-issue-card--warning  { border-left: 3px solid var(--color-orange); }
.php-issue-card--security { border-left: 3px solid #E040FB; }
.php-issue-card--info     { border-left: 3px solid var(--color-teal); }

.php-issue-card[hidden] { display: none; }

.php-issue-top {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}
.php-issue-top:hover { background: rgba(255,255,255,0.02); }

.php-issue-severity {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 100px;
  flex-shrink: 0;
  margin-top: 2px;
}
.severity--critical { background: rgba(230,57,70,0.2); color: var(--color-red); }
.severity--warning  { background: rgba(247,147,30,0.2); color: var(--color-orange); }
.severity--security { background: rgba(224,64,251,0.2); color: #E040FB; }
.severity--info     { background: rgba(46,196,182,0.2); color: var(--color-teal); }

.php-issue-body { flex: 1; min-width: 0; }
.php-issue-rule  { font-size: 0.8rem; font-weight: 700; color: var(--text-primary); margin-bottom: 2px; }
.php-issue-msg   { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.4; }
.php-issue-line  {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Code snippet */
.php-issue-snippet {
  padding: var(--space-xs) var(--space-md);
  border-top: 1px solid var(--border-color);
  background: rgba(0,0,0,0.2);
  display: none;
}
.php-issue-card.is-expanded .php-issue-snippet { display: block; }
.php-issue-snippet code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  white-space: pre;
  overflow-x: auto;
  line-height: 1.5;
}

/* Quick hint */
.php-issue-hint {
  padding: var(--space-xs) var(--space-md);
  border-top: 1px solid var(--border-color);
  font-size: 0.78rem;
  color: var(--color-lime);
  display: none;
}
.php-issue-card.is-expanded .php-issue-hint { display: block; }

/* Actions row */
.php-issue-actions {
  padding: var(--space-xs) var(--space-md);
  border-top: 1px solid var(--border-color);
  display: none;
}
.php-issue-card.is-expanded .php-issue-actions { display: flex; gap: var(--space-sm); align-items: center; }

.php-ai-fix-btn {
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(107, 63, 160, 0.3);
  color: var(--text-primary);
  border: 1px solid var(--color-purple);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.php-ai-fix-btn:hover {
  background: rgba(107, 63, 160, 0.5);
  box-shadow: 0 0 8px rgba(107, 63, 160, 0.4);
}
.php-ai-fix-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* AI fix result */
.php-ai-fix-result {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--border-color);
  background: rgba(107, 63, 160, 0.05);
  display: none;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.php-ai-fix-result.is-visible { display: block; }
.php-ai-fix-result pre {
  background: rgba(0,0,0,0.3);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: var(--space-sm) 0;
}
.php-ai-fix-result code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-lime);
}

/* ── No-issues state ────────────────────────────────────────── */
.php-clean-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--color-lime);
}
.php-clean-icon { font-size: 2.5rem; margin-bottom: var(--space-md); }
.php-clean-state p { font-size: 0.9rem; }

/* ── Active link ────────────────────────────────────────────── */
.nav-link--active {
  color: var(--color-lime) !important;
}

/* ── Buttons (smaller variants) ──────────────────────────────── */
.btn-sm {
  padding: 4px 10px;
  font-size: 0.75rem;
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: var(--space-xs) var(--space-md);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: var(--space-xs) var(--space-md);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-secondary:hover {
  border-color: var(--color-lime);
  box-shadow: 0 0 8px rgba(178, 212, 48, 0.2);
}
.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── AI Toolbar (v2.0) ──────────────────────────────────────── */
.php-ai-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding: var(--space-xs) var(--space-md);
  background: rgba(107, 63, 160, 0.08);
  border-bottom: 1px solid rgba(107, 63, 160, 0.25);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.php-ai-toolbar[hidden] { display: none; }
.php-ai-toolbar-left,
.php-ai-toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
}
.php-ai-toolbar-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-purple);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 4px;
}
.php-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 0.73rem;
  font-weight: 600;
  background: rgba(107, 63, 160, 0.15);
  color: var(--text-primary);
  border: 1px solid rgba(107, 63, 160, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.php-mode-btn:hover {
  background: rgba(107, 63, 160, 0.35);
  border-color: var(--color-purple);
  box-shadow: 0 0 10px rgba(107, 63, 160, 0.3);
}
.php-mode-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}
.php-mode-btn .mode-icon { font-size: 0.85rem; }

/* Export format selector in AI toolbar */
.php-export-group {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.php-export-format {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 3px 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
}

/* ── Score Ring (v2.0) ──────────────────────────────────────── */
.php-score-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.15);
  flex-wrap: wrap;
}
.php-score-bar[hidden] { display: none; }

.php-score-ring {
  position: relative;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
}
.php-score-svg {
  transform: rotate(-90deg);
  width: 52px;
  height: 52px;
}
.php-score-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 4;
}
.php-score-fg {
  fill: none;
  stroke: var(--color-lime);
  stroke-width: 4;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease, stroke 0.4s ease;
}
.php-score-value {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
}
.php-score-details {
  flex: 1;
  min-width: 0;
}
.php-score-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.php-score-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}
.php-score-item {
  font-size: 0.72rem;
  color: var(--text-secondary);
  white-space: nowrap;
}
.score-plus  { color: var(--color-lime); font-weight: 700; }
.score-minus { color: var(--color-red);  font-weight: 700; }

/* ── Compatibility Badges (v2.0) ────────────────────────────── */
.php-compat-badges {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-xs) var(--space-md);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  background: rgba(0, 0, 0, 0.08);
}
.php-compat-badges:empty { display: none; }
.php-compat-badges[hidden] { display: none; }
.php-compat-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-right: 4px;
}
.php-compat-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  border-radius: 100px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.compat-pass {
  background: rgba(178, 212, 48, 0.12);
  color: var(--color-lime);
  border-color: rgba(178, 212, 48, 0.3);
}
.compat-warn {
  background: rgba(247, 147, 30, 0.12);
  color: var(--color-orange);
  border-color: rgba(247, 147, 30, 0.3);
}
.compat-fail {
  background: rgba(230, 57, 70, 0.12);
  color: var(--color-red);
  border-color: rgba(230, 57, 70, 0.3);
}
.compat-target {
  box-shadow: 0 0 8px rgba(107, 63, 160, 0.4);
  border-color: var(--color-purple);
}

/* ── AI Analysis Panel (v2.0) ───────────────────────────────── */
.php-ai-panel {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--border-color);
  background: rgba(107, 63, 160, 0.04);
  max-height: 45vh;
  overflow: hidden;
}
.php-ai-panel[hidden] { display: none; }
.php-ai-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-md);
  background: rgba(107, 63, 160, 0.12);
  border-bottom: 1px solid rgba(107, 63, 160, 0.2);
  flex-shrink: 0;
}
.php-ai-panel-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-purple);
  display: flex;
  align-items: center;
  gap: 6px;
}
.php-ai-panel-close {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-muted);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}
.php-ai-panel-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}
.php-ai-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.php-ai-panel-body h1,
.php-ai-panel-body h2,
.php-ai-panel-body h3 {
  color: var(--text-primary);
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}
.php-ai-panel-body h1 { font-size: 1.1rem; }
.php-ai-panel-body h2 { font-size: 0.95rem; }
.php-ai-panel-body h3 { font-size: 0.85rem; }
.php-ai-panel-body pre {
  background: rgba(0, 0, 0, 0.3);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: var(--space-sm) 0;
}
.php-ai-panel-body code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-lime);
}
.php-ai-panel-body ul,
.php-ai-panel-body ol {
  padding-left: 1.4em;
  margin: var(--space-xs) 0;
}
.php-ai-panel-body li { margin-bottom: 4px; }
.php-ai-panel-body strong { color: var(--text-primary); }
.php-ai-panel-body em { color: var(--color-orange); }

/* AI panel loading spinner */
.php-ai-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl);
  color: var(--text-muted);
  font-size: 0.85rem;
}
.php-ai-loading::before {
  content: '';
  width: 18px;
  height: 18px;
  border: 2px solid rgba(107, 63, 160, 0.3);
  border-top-color: var(--color-purple);
  border-radius: 50%;
  animation: aiSpin 0.8s linear infinite;
}
@keyframes aiSpin {
  to { transform: rotate(360deg); }
}
.php-ai-error {
  color: var(--color-red);
  padding: var(--space-md);
  text-align: center;
  font-size: 0.85rem;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .php-split {
    grid-template-columns: 1fr;
    max-height: none;
  }
  .php-editor-pane {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    min-height: 250px;
    max-height: 45vh;
  }
  .php-issues-pane {
    min-height: 300px;
  }
  .php-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .php-toolbar-left,
  .php-toolbar-right {
    justify-content: center;
    flex-wrap: wrap;
  }
  .php-issues-filters {
    flex-wrap: wrap;
    justify-content: center;
  }
  .php-issues-header {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .php-ai-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
  }
  .php-ai-toolbar-left,
  .php-ai-toolbar-right {
    justify-content: center;
  }
  .php-score-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .php-compat-badges {
    justify-content: center;
  }
  .php-ai-panel {
    max-height: 55vh;
  }
}