:root {
  --bg: #f3f0e7;
  --bg-soft: #ebe3d2;
  --panel: rgba(255, 255, 255, 0.84);
  --panel-solid: #ffffff;
  --text: #172034;
  --muted: #56627a;
  --accent: #0d7a75;
  --accent-dark: #085f5a;
  --accent-warm: #b4692f;
  --danger: #c73636;
  --border: #cfd7df;
  --ring: rgba(13, 122, 117, 0.28);
  --shadow-lg: 0 20px 45px rgba(23, 32, 52, 0.12);
  --shadow-md: 0 12px 28px rgba(23, 32, 52, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #fdf4e8 0%, transparent 60%),
    radial-gradient(900px 500px at 95% 8%, #dbeef0 0%, transparent 55%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-soft) 100%);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  z-index: -1;
  filter: blur(22px);
  opacity: 0.28;
  pointer-events: none;
  animation: floatBlob 16s ease-in-out infinite;
}

body::before {
  left: -120px;
  top: 16vh;
  background: #8ec4c1;
}

body::after {
  right: -90px;
  bottom: 8vh;
  background: #e0ad81;
  animation-delay: -6s;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(247, 244, 236, 0.72);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 24px rgba(23, 32, 52, 0.06);
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw + 0.9rem, 2.2rem);
  letter-spacing: -0.02em;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
  padding: 20px;
  min-height: calc(100vh - 92px);
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 18px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: fit-content;
  position: sticky;
  top: 98px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
}

.file-label {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #f9fffe;
  padding: 11px 12px;
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.file-label:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(13, 122, 117, 0.24);
  filter: saturate(1.06);
}

#pdfFile,
#splitFile,
#compressFile,
#wordFile,
#pptFile {
  width: 100%;
}

input[type="file"] {
  color: var(--muted);
  font-size: 14px;
}

input[type="file"]::file-selector-button {
  margin-right: 12px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

input[type="file"]::file-selector-button:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

input,
select,
button,
.home-btn,
.home-link {
  transition: all 0.2s ease;
}

button {
  border: 1px solid transparent;
}

button:active,
.home-btn:active,
.file-label:active {
  transform: translateY(1px) scale(0.99);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.home-btn:focus-visible,
.home-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--ring);
}

.controls {
  display: grid;
  gap: 6px;
}

.controls label {
  font-size: 14px;
  font-weight: 700;
  color: #2c3752;
}

input[type="range"] {
  accent-color: var(--accent);
}

input[type="color"] {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  padding: 2px;
  width: 100%;
  min-height: 42px;
  cursor: pointer;
}

select,
.split-controls-panel input[type="text"] {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
}

#downloadBtn,
.merge-panel button,
.split-controls-panel #splitBtn,
#compressBtn,
#wordBtn,
#pptBtn {
  border: 0;
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  width: 100%;
  box-shadow: 0 8px 20px rgba(13, 122, 117, 0.28);
}

#downloadBtn:not(:disabled):hover,
.merge-panel button:not(:disabled):hover,
.split-controls-panel #splitBtn:not(:disabled):hover,
#compressBtn:not(:disabled):hover,
#wordBtn:not(:disabled):hover,
#pptBtn:not(:disabled):hover {
  filter: brightness(1.06);
  transform: translateY(-2px);
}

#downloadBtn:disabled,
.merge-panel button:disabled,
.split-controls-panel #splitBtn:disabled,
#compressBtn:disabled,
#wordBtn:disabled,
#pptBtn:disabled {
  background: #98b8b6;
  box-shadow: none;
  cursor: not-allowed;
}

.merge-action-btn,
.split-mode-btn {
  border: 1px solid var(--border);
  background: var(--panel-solid);
  border-radius: 12px;
  padding: 10px 12px;
  font-weight: 700;
  cursor: pointer;
}

.merge-action-btn:hover:not(:disabled),
.split-mode-btn:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.merge-action-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.format-controls .format-buttons {
  display: flex;
  gap: 8px;
}

.format-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

.format-btn:hover {
  border-color: var(--accent);
  background: #f0f8f7;
}

.format-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.format-btn:nth-child(1) {
  font-weight: 700;
}

.format-btn:nth-child(2) {
  font-style: italic;
  font-weight: normal;
}

.format-btn:nth-child(3) {
  text-decoration: underline;
  font-weight: normal;
  font-style: normal;
}

.delete-zone-bar {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 2px dashed var(--border);
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  font-size: 14px;
}

.workspace.has-pdf .delete-zone-bar {
  display: flex;
}

.delete-zone-bar.drag-over {
  border-bottom-color: var(--danger);
  background: #fff2f2;
  color: var(--danger);
}

.delete-zone-bar .delete-icon {
  font-size: 20px;
}

.workspace-content {
  flex: 1;
  overflow: auto;
  min-height: 400px;
  padding: 18px;
}

#deleteSelectedBtn {
  border: 1px solid var(--danger);
  padding: 10px 12px;
  border-radius: 12px;
  background: #fff;
  color: var(--danger);
  font-weight: 700;
  cursor: pointer;
}

#deleteSelectedBtn:hover:not(:disabled) {
  background: var(--danger);
  color: #fff;
}

#deleteSelectedBtn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.workspace,
.merge-panel,
.merge-preview,
.split-preview-panel,
.split-controls-panel {
  border-radius: 18px;
  box-shadow: var(--shadow-md);
}

.workspace {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(242, 246, 249, 0.72);
  min-height: 500px;
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 400px;
  text-align: center;
  color: var(--muted);
  animation: revealUp 0.55s ease both;
}

.page-wrap {
  position: relative;
  width: fit-content;
  margin: 0 auto 22px;
  box-shadow: 0 12px 28px rgba(18, 24, 40, 0.16);
  border-radius: 8px;
  overflow: hidden;
}

.page-canvas {
  display: block;
  background: #fff;
}

.text-layer-item {
  position: absolute;
  min-width: 24px;
  padding: 2px 4px;
  border: 1px dashed transparent;
  border-radius: 5px;
  cursor: move;
  user-select: none;
  white-space: pre;
  z-index: 2;
}

.text-layer-item.selected {
  border-color: var(--accent);
  background: rgba(13, 122, 117, 0.12);
}

.existing-text-layer {
  z-index: 1;
}

.existing-pdf-text {
  transition: background 0.2s ease;
  color: transparent;
}

.existing-pdf-text:hover {
  background: rgba(13, 122, 117, 0.15);
  border-radius: 2px;
}

.inline-edit-input {
  outline: none;
}

.inline-edit-input:focus {
  box-shadow: 0 0 0 2px rgba(13, 122, 117, 0.32);
}

.home-body .topbar {
  text-align: center;
}

.home-main {
  max-width: 1060px;
  margin: 42px auto;
  padding: 0 16px 24px;
}

.home-hero,
.home-trust,
.home-faq,
.home-cta {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
}

.home-hero {
  padding: 24px;
  margin-bottom: 18px;
}

.home-hero-kicker {
  margin: 0;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 12px;
}

.home-hero h2 {
  margin: 10px 0 10px;
  font-family: "Fraunces", "Iowan Old Style", "Georgia", serif;
  font-size: clamp(1.6rem, 1.9vw + 0.8rem, 2.4rem);
}

.home-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}

.home-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.home-hero-links a {
  text-decoration: none;
  color: var(--accent-dark);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 700;
}

.home-hero-links a:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.home-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}

.home-card {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  transform: translateY(18px);
  opacity: 0;
  animation: revealUp 0.45s ease forwards;
}

.home-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 18%, rgba(255, 255, 255, 0.44) 46%, transparent 74%);
  transform: translateX(-125%);
  transition: transform 0.55s ease;
  pointer-events: none;
}

.home-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 38px rgba(23, 32, 52, 0.17);
}

.home-card:hover::before {
  transform: translateX(125%);
}

.home-card:nth-child(1) { animation-delay: 0.03s; }
.home-card:nth-child(2) { animation-delay: 0.08s; }
.home-card:nth-child(3) { animation-delay: 0.13s; }
.home-card:nth-child(4) { animation-delay: 0.18s; }
.home-card:nth-child(5) { animation-delay: 0.23s; }
.home-card:nth-child(6) { animation-delay: 0.28s; }

.home-card h2 {
  margin: 0 0 10px;
  font-family: "Fraunces", "Iowan Old Style", "Georgia", serif;
  font-size: clamp(1.45rem, 1.4vw + 1rem, 1.95rem);
  letter-spacing: -0.02em;
}

.home-card p {
  margin: 0 0 18px;
  color: var(--muted);
}

.home-btn {
  display: inline-block;
  text-decoration: none;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(13, 122, 117, 0.24);
}

.home-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.07);
}

.home-note {
  margin-top: 16px;
  color: var(--muted);
}

.home-trust,
.home-faq,
.home-cta {
  margin-top: 18px;
  padding: 20px;
}

.home-trust h2,
.home-faq h2,
.home-cta h2 {
  margin: 0 0 10px;
}

.home-trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.home-trust-grid article {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}

.home-trust-grid h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.home-trust-grid p {
  margin: 0;
  color: var(--muted);
}

.home-faq details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}

.home-faq details + details {
  margin-top: 8px;
}

.home-faq summary {
  cursor: pointer;
  font-weight: 700;
}

.home-faq p {
  margin: 8px 0 0;
  color: var(--muted);
}

.home-cta p {
  margin: 0;
  color: var(--muted);
}

.home-cta a {
  color: var(--accent-dark);
  font-weight: 700;
}

.home-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent-dark);
  text-decoration: none;
  font-weight: 700;
}

.home-link:hover {
  color: var(--accent);
  transform: translateX(2px);
}

.merge-layout {
  max-width: 1050px;
  margin: 22px auto;
  padding: 0 16px 16px;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 18px;
}

.merge-panel,
.merge-preview {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.72);
  padding: 16px;
  backdrop-filter: blur(8px);
}

.merge-panel {
  display: grid;
  gap: 10px;
  align-content: start;
}

.merge-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.merge-preview-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: #f8fafc;
  box-shadow: 0 8px 14px rgba(23, 32, 52, 0.08);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.merge-preview-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 24px rgba(23, 32, 52, 0.12);
}

.merge-preview-card h3 {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.3;
  word-break: break-word;
}

.merge-preview-embed {
  width: 100%;
  height: 220px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.merge-status {
  margin-top: 16px;
  color: var(--muted);
  font-weight: 700;
}

.service-pdf-preview {
  width: 100%;
  height: 360px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.compress-section {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  display: grid;
  gap: 8px;
  background: #f8fafc;
}

.compress-section h3 {
  margin: 0;
  font-size: 16px;
}

.compress-radio,
.compress-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
}

.compress-section summary {
  cursor: pointer;
  font-weight: 800;
}

.compress-section select,
.compress-section input[type="range"] {
  width: 100%;
}

.split-layout {
  max-width: 1240px;
  margin: 22px auto;
  padding: 0 16px 16px;
  display: grid;
  grid-template-columns: 1fr 370px;
  gap: 18px;
}

.split-preview-panel,
.split-controls-panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.72);
  padding: 16px;
  backdrop-filter: blur(8px);
}

.split-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
}

.split-preview-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8fafc;
  padding: 10px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.split-preview-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 20px rgba(23, 32, 52, 0.1);
}

.split-preview-card img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
}

.split-preview-no {
  margin-top: 8px;
  font-weight: 800;
}

.split-controls-panel {
  display: grid;
  gap: 10px;
  align-content: start;
}

.split-mode-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.split-mode-btn.active {
  border-color: var(--accent-warm);
  color: #9b4f17;
  background: #fef5ec;
}

.split-merge-check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatBlob {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(18px, -14px);
  }
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .panel {
    position: static;
    top: auto;
  }

  .home-main {
    margin-top: 24px;
  }

  .home-cards {
    grid-template-columns: 1fr;
  }

  .merge-layout {
    grid-template-columns: 1fr;
    padding: 0 14px 14px;
  }

  .split-layout {
    grid-template-columns: 1fr;
    padding: 0 14px 14px;
  }

  .topbar {
    padding: 14px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}