/* ScrappyRAG Dashboard — Styles */

:root {
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'Fira Code', 'SF Mono', Consolas, monospace;
  --bg: #f8f9fa;
  --surface: #ffffff;
  --surface-alt: #f1f3f5;
  --border: #dee2e6;
  --border-focus: #0d9488;
  --text: #212529;
  --text-dim: #6c757d;
  --accent: #0d9488;
  --accent-hover: #0b7a70;
  --accent-dim: rgba(13,148,136,0.08);
  --error: #dc3545;
  --success: #198754;
  --warning: #fd7e14;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111111;
    --surface: #1a1a1a;
    --surface-alt: #222222;
    --border: #333333;
    --text: #e9ecef;
    --text-dim: #8b8b8b;
    --accent: #2dd4bf;
    --accent-hover: #14b8a6;
    --accent-dim: rgba(45,212,191,0.1);
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-body); background: var(--bg); color: var(--text); line-height: 1.6; min-height: 100vh; }

/* ── Buttons ── */
.btn {
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
  padding: 10px 20px; border-radius: 8px; border: none; cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}
.btn:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-secondary:hover { background: var(--accent-dim); }
.btn-ghost { background: transparent; color: var(--text-dim); padding: 6px 12px; }
.btn-ghost:hover { color: var(--text); background: var(--accent-dim); }
.btn-sm { font-size: 0.8rem; padding: 4px 10px; }
.btn-send { padding: 10px 24px; }

/* ── Forms ── */
input[type="email"], input[type="password"], input[type="text"] {
  font-family: var(--font-body); font-size: 0.95rem;
  width: 100%; padding: 12px 14px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); transition: border-color 0.15s;
}
input:focus { outline: none; border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--accent-dim); }
label { font-size: 0.85rem; font-weight: 600; color: var(--text-dim); display: block; margin-bottom: 4px; }
.form-group { margin-bottom: 16px; }
.error-text { color: var(--error); font-size: 0.85rem; margin-top: 12px; }
.success-text { color: var(--success); }

/* ── Screen Layout ── */
.screen { min-height: 100vh; }

/* ── Auth ── */
#auth-screen {
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  background-image: radial-gradient(ellipse at 50% 0%, var(--accent-dim) 0%, transparent 60%);
}
.auth-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 40px; width: 100%; max-width: 400px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.auth-logo { text-align: center; margin-bottom: 32px; }
.logo-icon { font-size: 2.5rem; color: var(--accent); display: block; margin-bottom: 8px; }
.auth-logo h1 { font-size: 1.6rem; font-weight: 700; }
.auth-tagline { color: var(--text-dim); font-size: 0.9rem; margin-top: 4px; }
#auth-form .btn { width: 100%; margin-top: 8px; }

/* ── Topbar ── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px; border-bottom: 1px solid var(--border);
  background: var(--surface); position: sticky; top: 0; z-index: 10;
}
.topbar-left { display: flex; align-items: center; gap: 8px; }
.logo-icon-sm { font-size: 1.2rem; color: var(--accent); }
.topbar-title { font-weight: 700; font-size: 1rem; }
.topbar-nav { display: flex; gap: 4px; }
.tab-btn {
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 600;
  padding: 8px 16px; border-radius: 6px; border: none;
  background: transparent; color: var(--text-dim); cursor: pointer;
}
.tab-btn:hover { background: var(--accent-dim); color: var(--text); }
.tab-btn.active { background: var(--accent); color: #fff; }
.tab-btn:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.user-email { font-size: 0.8rem; color: var(--text-dim); font-family: var(--font-mono); }

/* ── Tab Content ── */
.tab-content { padding: 24px; max-width: 800px; margin: 0 auto; }

/* ── Chat ── */
.chat-container { display: flex; flex-direction: column; height: calc(100vh - 80px); }
.chat-messages { flex: 1; overflow-y: auto; padding-bottom: 16px; }
.chat-welcome { text-align: center; padding: 80px 20px; color: var(--text-dim); }
.chat-welcome h2 { font-size: 1.4rem; color: var(--text); margin-bottom: 8px; }
.chat-msg { padding: 12px 0; border-bottom: 1px solid var(--border); }
.chat-msg-role { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600; color: var(--accent); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 1px; }
.chat-msg-user .chat-msg-role { color: var(--text-dim); }
.chat-msg-error .chat-msg-role { color: var(--error); }
.chat-msg-content { font-size: 0.95rem; line-height: 1.7; white-space: pre-wrap; }
.chat-meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim); margin-top: 6px; }
.thinking { opacity: 0.5; }
.chat-input-area { display: flex; gap: 8px; padding: 16px 0; border-top: 1px solid var(--border); }
.chat-input-area input { flex: 1; }

/* ── Knowledge Base ── */
.knowledge-header { margin-bottom: 24px; }
.knowledge-header h2 { margin-bottom: 4px; }
.knowledge-header p { color: var(--text-dim); font-size: 0.9rem; }

.drop-zone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 48px 24px; text-align: center; cursor: pointer;
  transition: border-color 0.2s, background 0.2s; margin-bottom: 24px;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent); background: var(--accent-dim);
}
.drop-icon { font-size: 2rem; display: block; margin-bottom: 8px; }
.drop-hint { font-size: 0.8rem; color: var(--text-dim); }
.drop-zone-content { cursor: pointer; display: block; }

/* iOS Safari won't trigger click on hidden inputs — use opacity trick */
.file-input-hidden {
  position: absolute; width: 1px; height: 1px;
  opacity: 0; overflow: hidden;
  clip: rect(0,0,0,0); clip-path: inset(50%);
}

.btn-mobile-upload {
  width: 100%; margin-bottom: 16px; display: none;
}
@media (max-width: 640px) {
  .btn-mobile-upload { display: block; }
  .drop-hint { display: none; }
  .drop-zone { padding: 32px 16px; }
}
.upload-status {
  padding: 12px 16px; background: var(--accent-dim); border-radius: 8px;
  font-size: 0.85rem; margin-bottom: 16px; color: var(--accent);
}
.docs-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.docs-header h3 { font-size: 1rem; }
.doc-card {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 8px; background: var(--surface);
}
.doc-name { font-weight: 600; font-size: 0.9rem; display: block; }
.doc-meta { font-size: 0.78rem; color: var(--text-dim); font-family: var(--font-mono); }
.status-ok { color: var(--success); }
.status-error { color: var(--error); }
.status-pending { color: var(--warning); }

/* ── Tools ── */
.tools-header { margin-bottom: 24px; }
.tools-header h2 { margin-bottom: 4px; }
.tools-header p { color: var(--text-dim); font-size: 0.9rem; }
.tool-card {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 8px; background: var(--surface);
}
.tool-info { display: flex; align-items: center; gap: 10px; }
.tool-name { font-weight: 600; }
.tool-tier {
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600;
  padding: 2px 8px; border-radius: 4px; text-transform: uppercase; letter-spacing: 1px;
  background: var(--accent-dim); color: var(--accent);
}
.tool-oauth { font-size: 0.75rem; color: var(--warning); }

/* ── Toggle Switch ── */
.toggle { position: relative; display: inline-block; width: 44px; height: 24px; cursor: pointer; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border); border-radius: 24px; transition: background 0.2s;
}
.toggle-slider::before {
  content: ''; position: absolute; height: 18px; width: 18px;
  left: 3px; bottom: 3px; background: #fff; border-radius: 50%;
  transition: transform 0.2s;
}
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); }
.toggle input:focus-visible + .toggle-slider { box-shadow: 0 0 0 3px var(--accent-dim); }

/* ── Empty States ── */
.empty-state { color: var(--text-dim); font-size: 0.9rem; text-align: center; padding: 32px; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; gap: 8px; }
  .topbar-nav { order: 3; width: 100%; justify-content: center; }
  .tab-content { padding: 16px; }
  .auth-card { margin: 16px; padding: 24px; }
}