@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@700;800&family=Noto+Sans+JP:wght@400;500&display=swap');

:root {
  --color-bg-base:        #0f1117;
  --color-bg-surface:     #1a1f2e;
  --color-bg-elevated:    #242938;
  --color-accent:         #00c2cc;
  --color-accent-dim:     #00c2cc33;
  --color-accent-hover:   #00e5f0;
  --color-text-primary:   #f0f4ff;
  --color-text-secondary: #8892a4;
  --color-text-disabled:  #3d4455;
  --color-border:         #2a3040;
  --color-border-focus:   #00c2cc;
  --color-success:        #22d3a0;
  --color-danger:         #f87171;
  --font-display: 'Syne', sans-serif;
  --font-mono:    'DM Mono', monospace;
  --font-body:    'Noto Sans JP', sans-serif;
}

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

body {
  background: var(--color-bg-base);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Header ── */

.header {
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  height: 52px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  color: var(--color-accent);
  letter-spacing: -0.5px;
  user-select: none;
}

.header-spacer { flex: 1; }

.btn-primary {
  background: var(--color-accent);
  color: #0f1117;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
  display: inline-block;
  line-height: 1;
}

.btn-primary:hover { background: var(--color-accent-hover); }

.btn-outline {
  background: none;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.btn-outline:hover:not(:disabled) { background: var(--color-accent-dim); }
.btn-outline:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Layout ── */

.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Tool Panel ── */

.tool-panel {
  width: 220px;
  min-width: 220px;
  background: var(--color-bg-surface);
  border-right: 1px solid var(--color-border);
  padding: 16px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: fadeUp 0.3s ease both;
}

.tool-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.tool-btn {
  width: 100%;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  text-align: left;
  display: block;
  line-height: 1.4;
}

.tool-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

.tool-btn:active:not(:disabled) { transform: scale(0.97); }

.tool-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.prop-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  display: block;
}

.prop-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.font-size-input {
  width: 100%;
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 4px;
  outline: none;
}

.font-size-input:focus { border-color: var(--color-border-focus); }

.color-picker-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

input[type="color"] {
  width: 32px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: none;
  cursor: pointer;
  padding: 2px;
  flex-shrink: 0;
}

.color-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-secondary);
}

.btn-danger {
  background: none;
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  width: 100%;
  transition: background 0.15s;
}

.btn-danger:hover { background: rgba(248, 113, 113, 0.1); }
.btn-danger:active { transform: scale(0.97); }

/* ── Library (text/image item lists) ── */

.item-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.item-entry {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.15s;
  min-width: 0;
}

.item-entry:hover { border-color: var(--color-accent); }

.item-entry.active {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

.item-entry-thumb {
  width: 24px;
  height: 24px;
  object-fit: cover;
  border-radius: 2px;
  flex-shrink: 0;
}

.item-entry-label {
  flex: 1;
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text-primary);
  min-width: 0;
}

.item-entry-page {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--color-text-disabled);
  flex-shrink: 0;
}

.item-entry-del {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  transition: color 0.15s;
}

.item-entry-del:hover { color: var(--color-danger); }

/* ── Canvas Area ── */

.canvas-area {
  flex: 1;
  background: #080a0f;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 32px;
  animation: fadeUp 0.3s ease both;
}

.canvas-area.drop-mode {
  padding: 16px;
  align-items: stretch;
}

.canvas-wrapper {
  position: relative;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--color-border);
}

#pdf-canvas { display: block; }

/* fabric wraps #fabric-canvas in .canvas-container; override its position */
.canvas-wrapper .canvas-container {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
}

/* ── Drop Zone ── */

.drop-zone {
  width: 100%;
  height: 100%;
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
  cursor: pointer;
  user-select: none;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

.drop-zone-icon { font-size: 40px; opacity: 0.5; }

.drop-zone-sub {
  font-size: 11px;
  color: var(--color-text-disabled);
}

/* ── Footer ── */

.footer {
  height: 44px;
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.page-btn {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  width: 28px;
  height: 28px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: border-color 0.15s, color 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.page-info { min-width: 100px; text-align: center; }

/* ── Animations ── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes addedFlash {
  0%   { box-shadow: 0 0 0 0 var(--color-accent); }
  40%  { box-shadow: 0 0 0 6px var(--color-accent-dim); }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.item-entry.added {
  animation: addedFlash 0.6s ease forwards;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Toast ── */

.toast {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 16px;
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 200;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
  white-space: nowrap;
}

.toast.show { opacity: 1; }