:root {
  --bg-1: #d7e8ff;
  --bg-2: #f8efe2;
  --text-main: #1f2937;
  --text-soft: #4b5563;
  --glass: rgba(255, 255, 255, 0.45);
  --glass-strong: rgba(255, 255, 255, 0.7);
  --border: rgba(255, 255, 255, 0.6);
  --accent: #0f766e;
  --accent-soft: #14b8a6;
  --danger: #dc2626;
  --shadow: 0 20px 50px rgba(17, 24, 39, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at 15% 20%, var(--bg-1) 0%, transparent 38%),
    radial-gradient(circle at 85% 15%, var(--bg-2) 0%, transparent 34%),
    linear-gradient(150deg, #f8fbff 0%, #fef8f2 100%);
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  width: 32rem;
  height: 32rem;
  border-radius: 50%;
  filter: blur(36px);
  z-index: 0;
  pointer-events: none;
}

.orb-1 {
  background: rgba(15, 118, 110, 0.18);
  top: -12rem;
  right: -10rem;
  animation: float 10s ease-in-out infinite;
}

.orb-2 {
  background: rgba(249, 115, 22, 0.12);
  bottom: -14rem;
  left: -8rem;
  animation: float 12s ease-in-out infinite reverse;
}

.app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  position: relative;
  z-index: 1;
}

.hero {
  text-align: center;
  margin-bottom: 1.5rem;
  animation: reveal 0.6s ease;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0.7rem auto 0;
  max-width: 680px;
  color: var(--text-soft);
}

.panel {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.controls-panel {
  padding: 1rem;
  animation: reveal 0.8s ease;
}

.upload-area {
  border: 2px dashed rgba(15, 118, 110, 0.32);
  border-radius: 1rem;
  padding: 1.2rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.upload-area:hover,
.upload-area:focus,
.upload-area.drag-over {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.8);
}

.upload-title {
  margin: 0;
  font-weight: 700;
}

.upload-subtitle {
  margin: 0.35rem 0 0;
  color: var(--text-soft);
}

.control-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.control-block,
.toggle-block {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.7rem;
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.58);
}

.control-block span,
.toggle-block span {
  font-size: 0.9rem;
  color: var(--text-soft);
}

.watermark-preview {
  height: 84px;
  border: 1px dashed rgba(15, 118, 110, 0.28);
  border-radius: 0.65rem;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.95), rgba(241, 245, 249, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.watermark-preview img {
  width: 70%;
  max-height: 72px;
  object-fit: contain;
  opacity: 0;
  transition: width 0.18s ease, opacity 0.2s ease;
}

.watermark-preview img.visible {
  opacity: 1;
}

.wm-preview-hint {
  margin: 0;
  font-size: 0.77rem;
  color: var(--text-soft);
}

input[type="file"],
input[type="text"],
input[type="range"],
select {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 0.6rem;
  padding: 0.55rem 0.6rem;
  font: inherit;
  background: var(--glass-strong);
  color: var(--text-main);
}

input[type="range"] {
  padding: 0;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.55rem;
  font-weight: 600;
}

.toggle-row input {
  width: 2.8rem;
  height: 1.3rem;
  accent-color: var(--accent);
}

.action-row {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 0.65rem 1rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-soft));
  color: #ffffff;
}

.secondary {
  background: #0f172a;
  color: #ffffff;
}

.ghost {
  background: rgba(220, 38, 38, 0.14);
  color: var(--danger);
}

.progress-wrap {
  margin-top: 0.9rem;
}

.hidden {
  display: none;
}

.progress-bar-track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.22);
  overflow: hidden;
}

.progress-bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #22d3ee);
  transition: width 0.18s linear;
}

#progressText,
.status-text {
  margin: 0.45rem 0 0;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.preview-panel {
  margin-top: 1rem;
  padding: 1rem;
  animation: reveal 1s ease;
}

.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.preview-head h2 {
  margin: 0;
}

.count-badge {
  font-size: 0.84rem;
  color: #065f46;
  background: rgba(16, 185, 129, 0.15);
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
}

.preview-grid {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.8rem;
}

.preview-card {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 0.9rem;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transform: translateY(8px);
  opacity: 0;
  animation: cardIn 0.35s ease forwards;
}

.preview-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 0.65rem;
}

.preview-name {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-status {
  margin: 0;
  font-size: 0.77rem;
  color: var(--text-soft);
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cardIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(0.8rem, 0.8rem);
  }
}

@media (max-width: 820px) {
  .control-grid {
    grid-template-columns: 1fr;
  }

  .action-row {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}