/* ═══════════════════════════════════════════════════════
   base.css — Variables, reset, theme, login, header, layout
   ═══════════════════════════════════════════════════════ */

:root {
  --bg: #f5f5f5;
  --bg-card: #ffffff;
  --bg-secondary: #ffffff;
  --bg-hover: #e8e8e8;
  --bg-input: #ffffff;
  --border: #d0d0d0;
  --text: #1a1a1a;
  --text-dim: #4a4a4a;
  --text-muted: #7a7a7a;
  --accent: #0066cc;
  --accent-dim: #0052a3;
  --green: #28a745;
  --orange: #fd7e14;
  --red: #dc3545;
  --purple: #6f42c1;
  --mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --radius: 6px;
}

/* ── Dark Theme ── */
:root.dark {
  --bg: #141414;
  --bg-card: #1e1e1e;
  --bg-secondary: #1e1e1e;
  --bg-hover: #2a2a2a;
  --bg-input: #252525;
  --border: #383838;
  --text: #e4e4e4;
  --text-dim: #a0a0a0;
  --text-muted: #666666;
  --accent: #4d9fff;
  --accent-dim: #3a8de0;
  --green: #3dbf5c;
  --orange: #ff9a3c;
  --red: #f05060;
  --purple: #9d73e8;
}

/* Theme toggle */
#btn-theme {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: var(--radius);
  padding: 4px 8px;
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
}
#btn-theme:hover { background: var(--bg-hover); color: var(--text); }

/* ── Reset ── */
* { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Login ── */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px 40px;
  text-align: center;
  max-width: 400px;
  width: 100%;
}
.login-box h1 { font-size: 24px; margin-bottom: 8px; color: var(--accent); }
.login-box p { color: var(--text-dim); margin-bottom: 24px; font-size: 14px; }
.login-box input {
  width: 100%; padding: 10px 14px;
  background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-family: var(--mono); font-size: 14px; margin-bottom: 16px;
}
.login-box input:focus { outline: none; border-color: var(--accent); }
.login-box button {
  width: 100%; padding: 10px;
  background: var(--accent-dim); color: #fff;
  border: none; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; cursor: pointer;
}
.login-box button:hover { background: var(--accent); }
.login-footer { margin-top: 12px; }
.link-btn {
  background: none; border: none;
  color: var(--text-muted); font-size: 12px;
  cursor: pointer; text-decoration: underline;
}
.link-btn:hover { color: var(--text-dim); }

/* ── Header ── */
header {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.header-left { display: flex; align-items: center; gap: 12px; }
.header-left h1 { font-size: 16px; color: var(--accent); white-space: nowrap; }
.badge {
  font-size: 11px; padding: 2px 8px;
  border-radius: 10px; background: var(--green);
  color: #000; font-weight: 600;
}
header nav { display: flex; gap: 2px; margin-left: auto; flex-wrap: wrap; justify-content: flex-end; max-width: 60%; }
.tab {
  padding: 6px 12px; background: transparent;
  border: 1px solid transparent; border-radius: var(--radius);
  color: var(--text-dim); font-size: 12px; cursor: pointer;
  font-weight: 500; white-space: nowrap;
}
.tab:hover { color: var(--text); background: var(--bg-hover); }
.tab.active { color: var(--text); background: var(--bg-hover); border-color: var(--border); }
#btn-logout {
  padding: 6px 12px; background: transparent;
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-dim); font-size: 12px; cursor: pointer; margin-left: 8px;
}
#btn-logout:hover { color: var(--red); border-color: var(--red); }
.header-actions { display: flex; align-items: center; gap: 8px; }

/* ── Dashboard App Shell ── */
#dashboard {
  display: flex; flex-direction: column;
  height: 100dvh; overflow: hidden;
}

/* ── Tab Content ── */
.tab-content { display: none; }
.tab-content.active {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}
#tab-notes { flex-direction: column; padding: 0; overflow: hidden; }
#tab-news { justify-content: center; }

/* ── Workspace Tab Container (outside #dashboard) ── */
#workspace-tab-contents {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  pointer-events: none;
  overflow: hidden;
}

#workspace-tab-contents .tab-content {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

#workspace-tab-contents .tab-content.active {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  background: var(--bg);
  padding-top: var(--ws-header-offset, 49px); /* set dynamically by ws-core.js */
  pointer-events: auto;
  overflow-y: auto;
}

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

/* ── Shared buttons ── */
.btn-primary, .btn-secondary {
  padding: 8px 16px; border-radius: 4px;
  font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.15s;
}
.btn-primary { background: var(--accent); border: 1px solid var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
.btn-secondary { background: none; border: 1px solid var(--border); color: var(--text); }
.btn-secondary:hover { background: var(--bg-hover); }
.form-actions { display: flex; gap: 8px; margin-top: 20px; }

.empty-state {
  padding: 60px 20px; text-align: center;
  color: var(--text-muted); font-size: 14px;
}

.error {
  margin-top: 12px; padding: 8px 12px;
  background: rgba(220, 53, 69, 0.1); border: 1px solid var(--red);
  border-radius: 4px; color: var(--red); font-size: 12px;
}
.success {
  margin-top: 12px; padding: 8px 12px;
  background: rgba(40, 167, 69, 0.1); border: 1px solid var(--green);
  border-radius: 4px; color: var(--green); font-size: 12px;
}