/* ── openMIP shared theme ── */

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

/* ── Dark theme (default) ── */
:root {
  --bg-page:           #141414;
  --bg-panel:          #1e1e1e;
  --bg-element:        #282828;
  --border:            #383838;
  --border-hi:         #505050;
  --text:              #f0ecff;
  --text-muted:        #9080b8;
  --text-dim:          #c0b4e0;
  --accent:            #c4b0f0;
  --accent-hi:         #a890d8;
  --btn-active-bg:     #6b52b0;
  --btn-active-border: #9b7dd4;
  --viewer-bg-hex:     0x141414;
}

/* ── Light theme ── */
/* Applied via html.light so a tiny inline <head> script can set it
   before first paint, preventing a flash of the wrong theme. */
html.light {
  --bg-page:           #f4f0fb;
  --bg-panel:          #ffffff;
  --bg-element:        #ece6f8;
  --border:            #d5c9f0;
  --border-hi:         #b8a7e0;
  --text:              #2d1f5e;
  --text-muted:        #9080b8;
  --text-dim:          #6657a0;
  --accent:            #8b6fd4;
  --accent-hi:         #7a5fc0;
  --btn-active-bg:     #9b7dd4;
  --btn-active-border: #c4b0f0;
  --viewer-bg-hex:     0xf4f0fb;
}

/* ── Base ── */
body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.2s, color 0.2s;
  overflow: hidden;
}

/* ── Header ── */
header {
  padding: 0.85rem 2rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  background: linear-gradient(135deg, #e0d0ff 0%, #c4b0f0 40%, #90c8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  /* Fallback for browsers without background-clip:text */
  color: var(--accent);
}

header h1 a {
  text-decoration: none;
  color: inherit;
  -webkit-text-fill-color: inherit;
}

/* ── Nav tabs ── */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 0.5rem;
}

.nav-tab {
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}

.nav-tab:hover {
  background: var(--bg-element);
  color: var(--text);
}

.nav-tab.active {
  background: var(--bg-element);
  color: var(--text);
  font-weight: 600;
}

/* ── Theme toggle button ── */
#theme-toggle {
  background: none;
  border: 1px solid var(--border-hi);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  line-height: 1.4;
  flex-shrink: 0;
}

#theme-toggle:hover {
  border-color: var(--accent);
  color: var(--text);
}
