/* ── Reset & Base ──────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f0f4f9;
  color: #222;
  font-size: 14px;
  line-height: 1.5;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }

/* ── Header ────────────────────────────────────── */
.site-header {
  background: #2E5395;
  color: #fff;
  padding: 18px 0;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.site-header h1 { font-size: 20px; font-weight: 700; }
.site-header .subtitle { font-size: 12px; opacity: .75; margin-top: 2px; }

/* ── Cards ─────────────────────────────────────── */
.card {
  background: #fff;
  border-radius: 10px;
  padding: 20px 22px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
}
.card h2 {
  font-size: 14px; font-weight: 700; color: #2E5395;
  padding-bottom: 8px; border-bottom: 2px solid #e8eef7;
}

.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.section-header h2 { border: none; padding: 0; margin: 0; }

.badge {
  display: inline-block;
  background: #4471C4; color: #fff;
  font-size: 11px; font-weight: 700;
  border-radius: 10px; padding: 1px 7px;
  margin-left: 6px; vertical-align: middle;
}

/* ── Forms ─────────────────────────────────────── */
.form-row { display: flex; gap: 14px; flex-wrap: wrap; }
.flex1 { flex: 1; min-width: 160px; }
.flex2 { flex: 2; min-width: 260px; }

.form-group { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.form-group label { font-size: 11px; font-weight: 700; color: #555; text-transform: uppercase; letter-spacing: .4px; }
.form-group .optional { font-weight: 400; text-transform: none; color: #999; }

/* İndeks radio options */
.indeks-options { display: flex; flex-direction: column; gap: 4px; }
.indeks-option {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 400;
  text-transform: none; letter-spacing: 0;
  color: #333; cursor: pointer;
  padding: 5px 8px; border-radius: 5px;
  transition: background .15s;
}
.indeks-option:hover { background: #f0f4f9; }
.indeks-option input[type="radio"] { accent-color: #2E5395; width: 15px; height: 15px; flex-shrink: 0; }
.indeks-option:has(input:checked) { background: #e8eef8; color: #2E5395; font-weight: 600; }

input[type="text"], textarea {
  border: 1px solid #d0d8e8; border-radius: 6px;
  padding: 7px 10px; font-size: 13px;
  transition: border-color .15s; font-family: inherit; width: 100%;
}
input[type="text"]:focus, textarea:focus {
  outline: none; border-color: #4471C4;
  box-shadow: 0 0 0 3px rgba(68,113,196,.1);
}
textarea { resize: vertical; min-height: 52px; }

.doi-row { display: flex; gap: 8px; margin-bottom: 5px; }
.doi-row .doi-input { flex: 1; }

/* ── Buttons ───────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  padding: 7px 14px; border: none; border-radius: 6px;
  cursor: pointer; font-size: 13px; font-weight: 600;
  transition: opacity .15s, transform .1s; white-space: nowrap;
}
.btn:hover { opacity: .88; }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }

.btn-primary   { background: #2E5395; color: #fff; }
.btn-secondary { background: #e8eef7; color: #2E5395; }
.btn-success   { background: #1e7e34; color: #fff; }
.btn-danger    { background: #dc3545; color: #fff; }
.btn-sm   { padding: 5px 11px; font-size: 12px; }
.btn-icon { padding: 3px 7px; font-size: 14px; background: transparent; color: inherit; }

/* ── Atıf Card ─────────────────────────────────── */
.atif-card {
  border: 1px solid #d0d8e8; border-radius: 8px;
  margin-bottom: 12px; overflow: hidden;
  background: #fafcff;
}

.atif-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: #eef2fa; border-bottom: 1px solid #d0d8e8;
  cursor: pointer; user-select: none;
}
.atif-num { font-weight: 700; font-size: 13px; color: #2E5395; }
.atif-header-actions { display: flex; gap: 4px; }
.collapse-btn { font-size: 12px; color: #888; }

.atif-body { padding: 14px; }
.atif-card.collapsed .atif-body { display: none; }
.atif-card.collapsed .collapse-btn { transform: rotate(180deg); }

/* PDF Upload Row */
.pdf-uploads-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}
@media (max-width: 600px) { .pdf-uploads-row { grid-template-columns: 1fr; } }

/* PDF Upload Area */
.pdf-upload-area {
  border: 1px dashed #bbc9e0; border-radius: 8px;
  padding: 12px; background: #fff;
}
.pdf-upload-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.pdf-upload-label { font-size: 11px; font-weight: 700; color: #555; text-transform: uppercase; letter-spacing: .4px; }

.pdf-status {
  display: flex; align-items: center; gap: 10px;
  color: #aaa; font-size: 12px; padding: 6px 0;
}
.pdf-icon { font-size: 22px; }
.pdf-status-text { line-height: 1.4; }

.pdf-loaded {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; padding: 4px 0;
}
.pdf-name-text { font-weight: 600; color: #2E5395; }
.pdf-pages-text { color: #888; }

.pdf-upload-area.has-pdf { border-color: #4471C4; border-style: solid; }
.pdf-upload-area.has-pdf .pdf-status-empty { display: none; }
.pdf-upload-area.has-pdf .pdf-loaded { display: flex !important; }

/* ── Slots Grid ────────────────────────────────── */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
@media (max-width: 700px) { .slots-grid { grid-template-columns: repeat(2, 1fr); } }

.slot {
  border: 1px dashed #bbc9e0; border-radius: 8px;
  padding: 10px; background: #fff;
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color .2s;
}
.slot.has-page { border-color: #4471C4; border-style: solid; }

.slot-label { font-size: 11px; font-weight: 700; color: #2E5395; line-height: 1.3; }
.slot-sub   { font-size: 10px; color: #888; line-height: 1.3; }

.slot-thumb-wrap {
  flex: 1; min-height: 80px; max-height: 130px;
  display: flex; align-items: center; justify-content: center;
  background: #f5f7fb; border-radius: 4px; overflow: hidden;
}
.slot-empty-thumb { font-size: 28px; color: #ccc; }
.slot-thumb { display: none; width: 100%; height: 100%; object-fit: contain; cursor: zoom-in; }
.slot.has-page .slot-empty-thumb { display: none; }
.slot.has-page .slot-thumb { display: block; }

.slot-pick-btn { width: 100%; }

/* atif_sayfasi zorunlu seçim vurgusu */
.slot[data-slot="atif_sayfasi"]:not(.has-page) .slot-pick-btn {
  background: #2E5395; color: #fff;
}
.slot[data-slot="atif_sayfasi"]:not(.has-page) .slot-label::after {
  content: ' *';
  color: #dc3545;
}

/* ── Modal ─────────────────────────────────────── */
.modal {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
}
.modal.hidden { display: none; }

.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.5); backdrop-filter: blur(2px);
}
.modal-box {
  position: relative; z-index: 1;
  background: #fff; border-radius: 12px;
  width: min(600px, 95vw);
  max-height: 90vh;
  display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid #e8eef7;
  font-weight: 700; font-size: 14px; color: #2E5395;
}
.modal-nav {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; padding: 10px 18px; border-bottom: 1px solid #f0f4f9;
  font-size: 13px; color: #555;
}
.modal-nav .btn-icon { font-size: 22px; color: #2E5395; }
.modal-preview-wrap {
  flex: 1; overflow-y: auto; padding: 12px 18px;
  display: flex; align-items: flex-start; justify-content: center;
  background: #f5f7fb;
}
#modal-preview-img {
  max-width: 100%; border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0,0,0,.15);
}
.modal-footer {
  padding: 12px 18px; border-top: 1px solid #e8eef7; text-align: center;
}
#modal-select { min-width: 160px; padding: 10px 24px; font-size: 14px; }

/* ── Actions Card ──────────────────────────────── */
.actions-card { display: flex; flex-direction: column; gap: 10px; }
.actions-row  { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.info-text    { font-size: 13px; color: #666; }

.progress-bar { height: 5px; background: #e0e8f4; border-radius: 4px; overflow: hidden; }
.progress-fill {
  height: 100%; background: #4471C4; width: 0%;
  animation: loading 1.5s ease-in-out infinite;
}
@keyframes loading { 0%,100% { width: 15%; } 50% { width: 80%; } }

#download-area { text-align: center; padding: 6px 0; }
#download-link { font-size: 14px; padding: 11px 28px; }

/* ── Toast ─────────────────────────────────────── */
#toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #333; color: #fff;
  padding: 9px 18px; border-radius: 6px; font-size: 13px;
  transition: transform .25s; z-index: 999; pointer-events: none;
}
#toast.show               { transform: translateX(-50%) translateY(0); }
#toast.error              { background: #dc3545; }
#toast.success            { background: #1e7e34; }

.hidden { display: none !important; }