:root {
  --bg: #f1f5f9;
  --panel: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #e11d48;
  --shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
}

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

/* "hidden" özelliği her zaman display kurallarını yensin */
[hidden] { display: none !important; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ---------- Üst bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 8px; }
.brand-icon { font-size: 22px; }
.brand h1 { font-size: 17px; font-weight: 700; white-space: nowrap; }

.toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  flex: 1;
}

.sep { width: 1px; height: 26px; background: var(--border); margin: 0 4px; }

.tool-btn, .action-btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 7px 11px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.tool-btn:hover, .action-btn:hover { background: #f8fafc; border-color: #cbd5e1; }

.tool-btn.active {
  background: #dbeafe;
  border-color: var(--primary);
  color: var(--primary-dark);
  font-weight: 600;
}

.action-btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}
.action-btn.primary:hover { background: var(--primary-dark); }
.action-btn.big { font-size: 16px; padding: 12px 28px; }

.opt { display: inline-flex; align-items: center; }

/* Kare kare renk paleti */
.swatches { display: inline-flex; gap: 4px; align-items: center; }
.swatch {
  width: 22px; height: 22px;
  border: 1px solid #cbd5e1;
  border-radius: 5px;
  cursor: pointer;
  padding: 0;
  transition: transform 0.1s;
}
.swatch:hover { transform: scale(1.15); }
.swatch.active { outline: 2.5px solid var(--primary); outline-offset: 1px; }

/* Silgi modu (Beyaz / Kağıt Rengi) */
.opt-group { display: inline-flex; gap: 0; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.mode-btn {
  border: none;
  background: var(--panel);
  padding: 7px 10px;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
}
.mode-btn + .mode-btn { border-left: 1px solid var(--border); }
.mode-btn.active { background: #dbeafe; color: var(--primary-dark); font-weight: 600; }

/* Yazı biçim seçenekleri (yazı tipi, boyut, kalın, italik, altı çizili) */
.text-opts { align-items: stretch; }
.font-select {
  border: none;
  background: var(--panel);
  padding: 0 8px;
  font-size: 12px;
  cursor: pointer;
  max-width: 130px;
}
.font-size-input {
  border: none;
  border-left: 1px solid var(--border);
  background: var(--panel);
  width: 48px;
  padding: 0 6px;
  font-size: 12px;
  text-align: center;
}
.text-opts .mode-btn { font-size: 13px; font-weight: 700; width: 30px; text-align: center; padding: 7px 0; }
.text-opts #fontDecBtn, .text-opts #fontIncBtn { width: 34px; font-size: 12px; }

/* Döndürme (resim/alan) */
.rotate-opts { align-items: center; padding: 0 8px; gap: 6px; }
.rotate-opts .rotate-ico { font-size: 15px; color: var(--muted); }
.rotate-opts #rotateSlider { width: 96px; cursor: pointer; }
.rotate-opts #rotateNum {
  border: none;
  border-left: 1px solid var(--border);
  background: var(--panel);
  width: 48px;
  padding: 6px;
  font-size: 12px;
  text-align: center;
}
.rotate-opts .mode-btn { font-size: 12px; font-weight: 600; padding: 7px 8px; }

/* Seçim penceresi */
.modal {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.45);
  z-index: 300;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
}
.modal-box {
  background: var(--panel);
  border-radius: 16px;
  padding: 24px;
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.3);
}
.modal-box h3 { font-size: 18px; }
.modal-box p { color: var(--muted); font-size: 14px; }
.modal-box .action-btn { display: flex; flex-direction: column; align-items: flex-start; gap: 3px; padding: 12px 14px; white-space: normal; text-align: left; }
.modal-box .action-btn small { font-weight: 400; font-size: 12px; opacity: 0.85; }
.opt input[type="color"] {
  width: 34px; height: 30px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
  cursor: pointer;
  background: var(--panel);
}
.opt input[type="range"] { width: 90px; cursor: pointer; }

#changesBtn { margin-left: auto; }

/* ---------- Karşılama ---------- */
.welcome {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 60px);
  padding: 24px;
}

.dropzone {
  background: var(--panel);
  border: 2px dashed #94a3b8;
  border-radius: 20px;
  padding: 60px 80px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, background 0.2s;
  max-width: 560px;
}

.dropzone.dragover { border-color: var(--primary); background: #eff6ff; }
.dz-icon { font-size: 56px; }
.dropzone h2 { font-size: 20px; }
.dropzone p { color: var(--muted); }
.hint { font-size: 13px; }

/* ---------- Sayfalar ---------- */
.editor { padding: 24px 12px 80px; }

.pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.page-wrap {
  position: relative;
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.18);
  background: #fff;
  max-width: 100%;
  transition: box-shadow 0.2s;
}

.page-wrap.flash-highlight {
  box-shadow: 0 0 0 4px var(--primary), 0 6px 24px rgba(15, 23, 42, 0.18);
}

.page-wrap canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-wrap .overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.page-num {
  position: absolute;
  bottom: -18px;
  right: 4px;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- Yazı kutuları ---------- */
.textbox {
  position: absolute;
  min-width: 30px;
  min-height: 20px;
  z-index: 5;
}

.textbox .tb-content {
  min-width: 30px;
  min-height: 1em;
  outline: 1px dashed transparent;
  white-space: pre-wrap;
  line-height: 1.25;
  cursor: text;
}
.textbox:hover .tb-content, .textbox.selected .tb-content {
  outline-color: var(--primary);
  background: rgba(37, 99, 235, 0.06);
}
.textbox .tb-content:focus { outline: 1.5px solid var(--primary); }

.textbox .del, .textbox .move {
  position: absolute;
  top: -14px;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: none;
  color: #fff;
  font-size: 12px;
  line-height: 22px;
  padding: 0;
  cursor: pointer;
  display: none;
  z-index: 6;
}
.textbox .del { right: -14px; background: var(--danger); }
.textbox .move { left: -14px; background: var(--primary); cursor: move; touch-action: none; }
.textbox:hover .del, .textbox.selected .del,
.textbox:hover .move, .textbox.selected .move { display: block; }

/* ---------- Resim kutuları ---------- */
.imgbox {
  position: absolute;
  z-index: 4;
  cursor: move;
  outline: 1px dashed transparent;
  touch-action: none;
}
.imgbox:hover, .imgbox.selected { outline: 1.5px dashed var(--primary); }
.imgbox img { display: block; width: 100%; height: auto; user-select: none; }

.imgbox .del {
  position: absolute;
  top: -14px; right: -14px;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: none;
  background: var(--danger);
  color: #fff;
  font-size: 12px;
  line-height: 22px;
  padding: 0;
  cursor: pointer;
  display: none;
  z-index: 6;
}

.imgbox .resize {
  position: absolute;
  right: -9px; bottom: -9px;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--primary);
  padding: 0;
  cursor: nwse-resize;
  display: none;
  z-index: 6;
  touch-action: none;
}

.imgbox:hover .del, .imgbox:hover .resize,
.imgbox.selected .del, .imgbox.selected .resize { display: block; }

/* ---------- Geçmiş paneli ---------- */
.history-panel {
  position: fixed;
  top: 0; right: 0;
  width: min(380px, 100vw);
  height: 100vh;
  background: var(--panel);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 24px rgba(15, 23, 42, 0.12);
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.history-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.history-head h2 { font-size: 16px; }

.history-list { overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.history-list .empty { color: var(--muted); text-align: center; padding: 24px 0; }

.history-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.history-item .name { font-weight: 600; font-size: 14px; word-break: break-all; }
.history-item .date { font-size: 12px; color: var(--muted); }
.history-item .row { display: flex; gap: 6px; flex-wrap: wrap; }
.history-item .row button { font-size: 12px; padding: 5px 9px; }

.overlay-bg {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.35);
  z-index: 90;
}

/* ---------- Yükleniyor ---------- */
.loading {
  position: fixed; inset: 0;
  background: rgba(255, 255, 255, 0.85);
  z-index: 200;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

.spinner {
  width: 46px; height: 46px;
  border: 5px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Yazdırma ---------- */
#printArea { display: none; }

@media print {
  body > *:not(#printArea) { display: none !important; }
  #printArea { display: block !important; }
  #printArea img {
    display: block;
    width: 100%;
    page-break-after: always;
  }
  #printArea img:last-child { page-break-after: auto; }
  @page { margin: 0; }
}

/* ---------- Mobil ---------- */
@media (max-width: 720px) {
  .dropzone { padding: 40px 20px; }
  .brand h1 { display: none; }
  .tool-btn, .action-btn { padding: 6px 8px; font-size: 12px; }
}