/*
Theme Name: DocScanner
Theme URI: https://example.com/docscanner
Author: DocScanner
Author URI: https://example.com
Description: A one-page document scanner WordPress theme. Upload images, apply filters (grayscale, enhance, rotate), and export as PDF — all client-side.
Version: 1.0.0
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: docscanner
Tags: one-page, document-scanner, custom-background
*/

/* ── Reset & Base ─────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: hsl(210, 33%, 98%);
  --fg: hsl(215, 25%, 20%);
  --card: hsl(0, 0%, 100%);
  --primary: hsl(211, 80%, 52%);
  --primary-fg: hsl(0, 0%, 100%);
  --muted-fg: hsl(215, 12%, 50%);
  --border: hsl(214, 20%, 90%);
  --upload-zone: hsl(211, 60%, 96%);
  --upload-zone-border: hsl(211, 50%, 80%);
  --upload-zone-hover: hsl(211, 60%, 92%);
  --destructive: hsl(0, 72%, 55%);
  --radius: 0.75rem;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ───────────────────────────────── */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.site-header .inner {
  max-width: 64rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.site-header .logo-icon { width: 28px; height: 28px; color: var(--primary); }
.site-header h1 { font-size: 1.25rem; font-weight: 700; }
.site-header .tagline { font-size: 0.875rem; color: var(--muted-fg); }

/* ── Toolbar ──────────────────────────────── */
.toolbar {
  max-width: 48rem;
  margin: 0 auto;
  display: none; /* shown via JS when pages exist */
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  background: var(--card);
  padding: 0.75rem;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.toolbar.visible { display: flex; }

.toolbar button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  transition: background .15s;
}
.toolbar button:hover { background: hsl(211, 60%, 95%); }
.toolbar button.primary-action {
  background: var(--primary);
  color: var(--primary-fg);
}
.toolbar button.primary-action:hover { opacity: .9; }
.toolbar button.text-primary { color: var(--primary); }
.toolbar button.text-destructive { color: var(--destructive); }
.toolbar button.active { background: hsl(211, 60%, 92%); }

/* ── Upload Zone ──────────────────────────── */
.upload-zone-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}
.upload-zone {
  max-width: 36rem;
  width: 100%;
  border: 2px dashed var(--upload-zone-border);
  border-radius: 1rem;
  background: var(--upload-zone);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  cursor: pointer;
  transition: background .15s;
}
.upload-zone:hover { background: var(--upload-zone-hover); }
.upload-zone svg { width: 64px; height: 64px; color: var(--primary); opacity: .6; margin-bottom: 1rem; }
.upload-zone .label { font-size: 1.125rem; font-weight: 500; color: var(--primary); }
.upload-zone .sublabel { font-size: 0.875rem; color: var(--muted-fg); }

/* ── Preview ──────────────────────────────── */
.preview-area { max-width: 56rem; margin: 0 auto; width: 100%; }
.main-preview {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.main-preview .frame {
  background: var(--card);
  padding: 0.5rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
  overflow: hidden;
}
.main-preview img {
  max-height: 60vh;
  width: auto;
  border-radius: 0.5rem;
  object-fit: contain;
  transition: all .3s;
}
.thumbnails {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}
.thumb {
  position: relative;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 0.5rem;
  overflow: hidden;
  transition: border-color .15s;
}
.thumb.selected { border-color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.thumb img { width: 64px; height: 80px; object-fit: cover; }
.thumb .remove-btn {
  position: absolute;
  top: -4px; right: -4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--destructive);
  color: #fff;
  border: none;
  font-size: 12px;
  line-height: 18px;
  text-align: center;
  cursor: pointer;
  display: none;
}
.thumb:hover .remove-btn { display: block; }
.thumb .page-num {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,.55);
  color: #fff;
  text-align: center;
  font-size: 0.7rem;
}

/* ── Footer ───────────────────────────────── */
.site-footer {
  background: var(--card);
  border-top: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted-fg);
}

/* ── Content area ─────────────────────────── */
.site-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem 1rem;
}

/* ── Hidden helper ────────────────────────── */
.hidden { display: none !important; }