/*
Theme Name: Book Tracker Theme
Theme URI: https://example.com/
Author: ChatGPT
Author URI: https://example.com/
Description: A lightweight, tailorable theme designed to work with the Book Tracker plugin shortcodes.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 7.4
Text Domain: book-tracker-theme
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/

:root {
  --bt-primary: #2b6cb0;
  --bt-accent: #805ad5;
  --bt-bg: #ffffff;
  --bt-surface: #f7fafc;
  --bt-text: #1a202c;
  --bt-muted: #4a5568;
  --bt-border: #e2e8f0;
  --bt-radius: 14px;
  --bt-max: 1100px;
  --bt-shadow: 0 10px 24px rgba(0,0,0,.08);
  --bt-font: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

body {
  margin: 0;
  font-family: var(--bt-font);
  color: var(--bt-text);
  background: var(--bt-bg);
  line-height: 1.5;
}

a { color: var(--bt-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.bt-wrap { max-width: var(--bt-max); margin: 0 auto; padding: 24px 16px; }

.bt-card {
  background: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
  box-shadow: var(--bt-shadow);
  padding: 18px;
}

.bt-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bt-bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bt-border);
}

.bt-header-inner {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  max-width: var(--bt-max);
  margin: 0 auto;
}

.bt-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: .2px;
}
.bt-brand img {
  width: 34px; height: 34px;
  border-radius: 10px;
  object-fit: cover;
}

.bt-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
}
.bt-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 12px;
  color: var(--bt-text);
}
.bt-nav a:hover {
  background: color-mix(in srgb, var(--bt-border) 45%, transparent);
  text-decoration: none;
}

.bt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--bt-border);
  background: var(--bt-bg);
  color: var(--bt-text);
  cursor: pointer;
}
.bt-btn:hover {
  background: color-mix(in srgb, var(--bt-border) 40%, transparent);
  text-decoration: none;
}
.bt-btn-primary {
  border-color: color-mix(in srgb, var(--bt-primary) 40%, var(--bt-border));
  background: var(--bt-primary);
  color: white;
}
.bt-btn-primary:hover { background: color-mix(in srgb, var(--bt-primary) 86%, black); }

.bt-hero { padding: 30px 0 10px; }
.bt-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  align-items: stretch;
}
@media (max-width: 860px) { .bt-hero-grid { grid-template-columns: 1fr; } }

.bt-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
}
@media (max-width: 640px) { .bt-kpis { grid-template-columns: 1fr; } }

.bt-kpi {
  background: var(--bt-bg);
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
  padding: 14px;
}
.bt-kpi .n { font-size: 22px; font-weight: 800; }
.bt-kpi .l { color: var(--bt-muted); font-size: 13px; }

.bt-footer {
  border-top: 1px solid var(--bt-border);
  margin-top: 32px;
  padding: 24px 0;
  color: var(--bt-muted);
  font-size: 13px;
}

.book-tracker-container {
  max-width: var(--bt-max);
  margin: 0 auto;
  padding: 20px 16px;
}