/* ==========================================================================
   EstroHelp — CSS Custom Properties & Reset
   ========================================================================== */

/* ==========================================================================    Nexus Base Theme & Reset    ========================================================================== */
:root {
  --color-bg: #fafafa;
  --color-bg-elevated: #ffffff;
  --color-bg-hover: #f5f5f5;
  --color-bg-muted: #f0f0f0;
  --color-border: #e0e0e0;
  --color-border-strong: #d0d0d0;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a5a;
  --color-text-muted: #757585;
  --color-text-inverse: #ffffff;
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-light: #eff6ff;
  --color-primary-focus: rgba(59, 130, 246, 0.25);
  
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;
  --text-xs: 0.7rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
  --transition-fast: 120ms ease;
  --header-height: 60px;
  --sidebar-width: 280px;
  --container-max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); font-size: var(--text-base); color: var(--color-text); background: var(--color-bg); min-height: 100vh; display: flex; flex-direction: column; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
ul { list-style: none; }
a { color: var(--color-primary); text-decoration: none; }

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-5); }
.main { flex: 1; padding: var(--space-5) 0; }

.topbar { position: sticky; top: 0; z-index: 100; height: var(--header-height); background: var(--color-bg-elevated); border-bottom: 1px solid var(--color-border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: var(--space-5); }
.brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-serif); font-size: var(--text-xl); font-weight: bold; color: var(--color-text); }
.brand-icon { width: 28px; height: 28px; color: var(--color-primary); }
.main-nav { display: flex; gap: var(--space-1); }
.nav-link { padding: var(--space-2) var(--space-3); font-size: var(--text-sm); color: var(--color-text-secondary); border-radius: var(--radius-md); }
.nav-link.active { color: var(--color-primary); background: var(--color-primary-light); }

.status-indicator { display: inline-flex; align-items: center; gap: var(--space-1); font-size: var(--text-xs); color: var(--color-text-muted); }
.status-dot { width: 6px; height: 6px; border-radius: 9999px; background: var(--color-text-muted); }
.status-indicator.connected .status-dot { background: #10b981; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); font-size: var(--text-sm); font-weight: 500; border-radius: var(--radius-md); cursor: pointer; border: none; }
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-ghost { color: var(--color-text-secondary); background: transparent; }
.btn-outline { border: 1px solid var(--color-border); background: var(--color-bg-elevated); }

@media (min-width: 900px) {
  .main .container { display: grid; grid-template-columns: var(--sidebar-width) 1fr; gap: var(--space-6); align-items: start; }
}

.sidebar { position: sticky; top: calc(var(--header-height) + var(--space-5)); }
.sidebar-section { margin-bottom: var(--space-6); }
.sidebar-title { font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); margin-bottom: var(--space-3); }
.category-list, .resource-list { display: flex; flex-direction: column; gap: var(--space-1); }
.category-link, .resource-link { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); color: var(--color-text-secondary); font-size: var(--text-sm); }
.category-link.active { color: var(--color-primary); background: var(--color-primary-light); }
.category-count { margin-left: auto; font-size: var(--text-xs); background: var(--color-bg-muted); padding: 1px var(--space-2); border-radius: 9999px; }

.feed-header { display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-5); }
.feed-title { font-size: var(--text-2xl); font-weight: bold; }
.feed-filters { display: flex; gap: var(--space-2); }
.filter-btn { padding: var(--space-1) var(--space-3); font-size: var(--text-sm); background: var(--color-bg-elevated); border: 1px solid var(--color-border); border-radius: 9999px; }
.filter-btn.active { color: var(--color-primary); background: var(--color-primary-light); border-color: var(--color-primary); }

.feed { display: flex; flex-direction: column; gap: var(--space-4); }
.post { background: var(--color-bg-elevated); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
.post-header { display: flex; gap: var(--space-3); padding: var(--space-4); border-bottom: 1px solid var(--color-border); background: var(--color-bg); }
.post-avatar { width: 40px; height: 40px; border-radius: 9999px; background: var(--color-primary-light); color: var(--color-primary); display: flex; align-items: center; justify-content: center; font-weight: bold; }
.post-body { padding: var(--space-4); line-height: 1.5; }
.post-actions { display: flex; gap: var(--space-4); padding: var(--space-3) var(--space-4); border-top: 1px solid var(--color-border); background: var(--color-bg); }
.action-btn { display: inline-flex; align-items: center; gap: var(--space-1); font-size: var(--text-sm); color: var(--color-text-muted); background: transparent; }

.modal { position: fixed; inset: 0; z-index: 1000; margin: auto; border: none; background: transparent; }
.modal::backdrop { background: rgba(0,0,0,0.5); }
.modal-content { position: relative; width: 100%; max-width: 560px; margin: var(--space-5) auto; background: var(--color-bg-elevated); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); overflow: hidden; }
.modal-header, .modal-footer { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); }
.modal-body { padding: var(--space-5); }
.form-group { margin-bottom: var(--space-4); }
.form-group label { display: block; font-size: var(--text-sm); font-weight: 500; margin-bottom: var(--space-2); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: var(--space-3); background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); }

.blank-overlay { position: fixed; inset: 0; z-index: 9999; background: var(--color-bg-elevated); opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.blank-overlay:not(.hidden) { opacity: 1; pointer-events: auto; }

.site-footer { background: var(--color-bg-elevated); border-top: 1px solid var(--color-border); margin-top: auto; }
.footer-bottom { padding: var(--space-4) 0; text-align: center; font-size: var(--text-xs); color: var(--color-text-muted); }

/* ==========================================================================    Control Panel Styling    ========================================================================== */
[data-page="control"] {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  min-height: 100vh;
}

.control-wrap {
  width: 100%;
  max-width: 600px;
}

.panel {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.panel.hidden {
  display: none;
}

.eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.control-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-4);
}

.composer {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.composer textarea {
  width: 100%;
  min-height: 140px;
  padding: var(--space-3);
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: var(--text-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  resize: vertical;
}

.composer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.injection-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-height: 200px;
  overflow-y: auto;
}

.injection {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
}

.message {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}