@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --paper: #FAFAF8;
    --paper-raised: #FFFFFF;
    --ink: #14151A;
    --ink-soft: #5A5C64;
    --accent: #155EEF;
    --accent-dim: #EAF1FF;
    --line: #E2E1DA;
    --radius: 3px;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;
    --font-sans: 'Inter', -apple-system, system-ui, sans-serif;
}

[data-theme="dark"] {
    --paper: #14151A;
    --paper-raised: #1D1E24;
    --ink: #F2F2F0;
    --ink-soft: #9A9CA6;
    --accent: #3B82F6;
    --accent-dim: #16233D;
    --line: #2C2D34;
}

* { box-sizing: border-box; }

body { transition: background-color .2s ease, color .2s ease; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

a { color: inherit; text-decoration: none; }

/* Header */
.site-header {
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    position: sticky;
    top: 0;
    z-index: 10;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: -0.02em;
}
.logo-mark { color: var(--accent); display: flex; }
.main-nav { display: flex; gap: 28px; flex: 1; justify-content: center; }
.main-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-soft);
    padding: 6px 2px;
    border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: var(--ink); }
.main-nav a.active { color: var(--ink); border-bottom-color: var(--accent); }
.lang-switch { display: flex; gap: 4px; font-family: var(--font-mono); font-size: 12px; }
.lang-switch a {
    padding: 4px 8px;
    color: var(--ink-soft);
    border-radius: var(--radius);
}
.lang-switch a.active { background: var(--ink); color: var(--paper); }

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
    padding: 72px 0 56px;
}
.hero h1 {
    font-family: var(--font-mono);
    font-size: 40px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 18px;
}
.hero p {
    font-size: 17px;
    color: var(--ink-soft);
    max-width: 42ch;
    margin: 0;
}
.hero-grid {
    aspect-ratio: 1;
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(9, 1fr);
    gap: 4px;
    padding: 20px;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 8px;
}
.hero-grid span {
    background: var(--line);
    border-radius: 1px;
    animation: modulePulse 3.2s ease-in-out infinite;
    animation-delay: calc(var(--i) * 45ms);
}
@keyframes modulePulse {
    0%, 100% { background: var(--line); }
    45% { background: var(--ink); }
    55% { background: var(--ink); }
}

/* Tool card */
.tool-card {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 32px;
    margin-bottom: 64px;
}
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 16px;
}
.tab-btn {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 20px;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink-soft);
    cursor: pointer;
}
.tab-btn.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.tool-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.tool-form { display: flex; flex-direction: column; gap: 16px; }
.tool-panel { display: none; flex-direction: column; gap: 16px; }
.tool-panel.active { display: flex; }

label {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-soft);
    display: block;
    margin-bottom: 6px;
}
input[type=text], input[type=url], input[type=tel], input[type=email], input[type=password], textarea, select {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper);
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--ink);
}
input:focus, textarea:focus, select:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    border-color: var(--accent);
}
textarea { min-height: 88px; resize: vertical; }

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.style-controls { display: flex; gap: 16px; align-items: center; margin-top: 4px; }
.style-controls input[type=color] { width: 40px; height: 40px; border: 1px solid var(--line); border-radius: var(--radius); padding: 2px; background: var(--paper-raised); }
.style-controls input[type=range] { flex: 1; }

.preview-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    background: var(--paper);
    border: 1px dashed var(--line);
    border-radius: 8px;
    padding: 24px;
}
#qr-canvas-wrap, #barcode-canvas-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
}
.placeholder-text {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--ink-soft);
}
.download-row { display: flex; gap: 10px; }

.btn {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 13px;
    padding: 11px 18px;
    border-radius: var(--radius);
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--paper);
    cursor: pointer;
}
.btn:hover { background: #000; }
.btn.secondary { background: var(--paper-raised); color: var(--ink); }

/* Page header (barcode / scan) */
.page-head { padding: 56px 0 8px; }
.page-head h1 { font-family: var(--font-mono); font-size: 30px; margin: 0 0 10px; }
.page-head p { color: var(--ink-soft); margin: 0 0 32px; max-width: 56ch; }

/* Scanner */
.dropzone {
    border: 2px dashed var(--line);
    border-radius: 10px;
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    background: var(--paper-raised);
}
.dropzone.dragover { border-color: var(--accent); background: var(--accent-dim); }
.dropzone p { font-family: var(--font-mono); color: var(--ink-soft); margin: 0; }
#scan-result-box {
    margin-top: 24px;
    padding: 18px;
    border-radius: var(--radius);
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    font-family: var(--font-mono);
    font-size: 14px;
    word-break: break-all;
    display: none;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-soft);
    cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-soft); }

/* Style controls (shape / gradient / logo / bg) */
.style-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}
.shape-options { display: flex; gap: 8px; }
.shape-options label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    padding: 6px 10px;
    border: 1px solid var(--line);
    border-radius: 20px;
    cursor: pointer;
    color: var(--ink-soft);
}
.shape-options input { display: none; }
.shape-options input:checked + span,
.shape-options label:has(input:checked) { color: var(--ink); }
.shape-options label:has(input:checked) { border-color: var(--ink); background: var(--accent-dim); }
.inline-check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-soft); font-weight: 500; }
.inline-check input { width: auto; }
.file-row { display: flex; align-items: center; gap: 10px; }
.file-row input[type=file] { font-size: 12px; }
.chip-remove {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-soft);
    background: none;
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 3px 10px;
    cursor: pointer;
}

/* History */
.history-block { margin-bottom: 64px; }
.history-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.history-head h2 { font-family: var(--font-mono); font-size: 16px; margin: 0; }
.history-clear-btn { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); background: none; border: none; cursor: pointer; text-decoration: underline; }
.history-list { display: flex; flex-wrap: wrap; gap: 10px; }
.history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 6px 12px 6px 6px;
    font-family: var(--font-mono);
    font-size: 12px;
    cursor: pointer;
    max-width: 220px;
}
.history-item img { width: 24px; height: 24px; border-radius: 3px; }
.history-item span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history-empty-note { font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); }

/* Share row */
.share-row { display: flex; gap: 8px; margin-top: 6px; }
.share-btn {
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 8px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--paper-raised);
    color: var(--ink-soft);
}
.share-btn:hover { color: var(--ink); border-color: var(--ink-soft); }

/* Bulk (barcode page) */
.bulk-section { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--line); }
.bulk-section h2 { font-family: var(--font-mono); font-size: 18px; margin: 0 0 6px; }
.bulk-section > p { color: var(--ink-soft); font-size: 14px; margin: 0 0 18px; }
.bulk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.bulk-grid textarea { min-height: 160px; font-family: var(--font-mono); font-size: 13px; }
#bulk-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-content: flex-start;
    max-height: 220px;
    overflow-y: auto;
    background: var(--paper);
    border: 1px dashed var(--line);
    border-radius: 8px;
    padding: 12px;
}
#bulk-preview canvas { border: 1px solid var(--line); background: #fff; }
.bulk-actions { display: flex; gap: 10px; margin-top: 16px; }

/* Scan mode tabs + camera */
.scan-modes { display: flex; gap: 6px; margin-bottom: 20px; }
#camera-panel { display: none; flex-direction: column; align-items: center; gap: 14px; }
#camera-panel.active { display: flex; }
#dropzone-panel.hidden { display: none; }
#camera-video { width: 100%; max-width: 420px; border-radius: 10px; border: 1px solid var(--line); background: #000; }
.camera-hint { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }

/* Print sheet */
@media print {
    .site-header, .site-footer, .tool-card, .page-head, .bulk-section > p,
    .tabs, .style-panel, .history-block { display: none !important; }
    #print-sheet { display: grid !important; }
}
#print-sheet {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
#print-sheet .print-item { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 10px; }
#print-sheet canvas { max-width: 100%; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 48px; margin-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-note { font-size: 13px; color: var(--ink-soft); margin: 0; }
.footer-meta { display: flex; gap: 16px; font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }

@media (max-width: 780px) {
    .hero { grid-template-columns: 1fr; padding-top: 40px; }
    .hero-grid { max-width: 260px; margin: 0 auto; }
    .tool-body { grid-template-columns: 1fr; }
    .main-nav { display: none; }
}