/* ═══════════════════════════════════════════
   IMAGE RESIZER — MODERN UI
   ═══════════════════════════════════════════ */
:root {
  --ir-accent: #6366f1;
  --ir-accent-light: rgba(99,102,241,0.1);
  --ir-accent-glow: rgba(99,102,241,0.25);
  --ir-green: #10b981;
  --ir-green-bg: rgba(16,185,129,0.1);
  --ir-amber: #f59e0b;
  --ir-amber-bg: rgba(245,158,11,0.1);
  --ir-red: #ef4444;
  --ir-red-bg: rgba(239,68,68,0.1);
  --ir-bg: var(--bg-glass);
  --ir-border: var(--border);
  --ir-radius: var(--radius-sm);
  --ir-font: var(--font);
  --ir-mono: 'SF Mono','Fira Code','Cascadia Code','Consolas',monospace;
}

/* ── Main Card ── */
.ir-main-card { padding: 1.5rem; }
@media (max-width: 480px) { .ir-main-card { padding: 1rem; } }

/* ── Drop Zone ── */
.ir-dropzone {
  position: relative;
  border: 2px dashed var(--ir-border);
  border-radius: var(--ir-radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s;
  background: var(--ir-bg);
  margin-bottom: 1.25rem;
  outline: none;
}
.ir-dropzone:hover,
.ir-dropzone:focus-visible {
  border-color: var(--ir-accent);
  background: var(--ir-accent-light);
  box-shadow: 0 0 0 3px var(--ir-accent-glow);
}
.ir-dropzone.dragover {
  border-color: var(--ir-accent);
  background: var(--ir-accent-light);
  box-shadow: 0 0 0 4px var(--ir-accent-glow);
  transform: scale(1.01);
}
.ir-dropzone.has-image {
  border-style: solid;
  border-color: var(--ir-green);
  background: var(--ir-green-bg);
  padding: 1rem;
}
.ir-input-file {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.ir-drop-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  display: block;
  transition: transform 0.25s;
}
.ir-dropzone.dragover .ir-drop-icon { transform: translateY(-4px); }
.ir-drop-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.25rem;
}
.ir-drop-sub {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin: 0;
}
.ir-drop-formats {
  font-size: 0.65rem;
  color: var(--text-tertiary);
  margin-top: 0.5rem;
  opacity: 0.8;
}

/* ── Preview Area ── */
.ir-preview-section {
  display: none;
  margin-bottom: 1.25rem;
}
.ir-preview-section.show { display: block; }
.ir-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.ir-preview-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ir-preview-actions {
  display: flex;
  gap: 0.35rem;
}
.ir-preview-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 600px) { .ir-preview-wrap { grid-template-columns: 1fr; } }
.ir-preview-card {
  background: var(--ir-bg);
  border: 1px solid var(--ir-border);
  border-radius: var(--ir-radius);
  overflow: hidden;
}
.ir-preview-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--ir-border);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.ir-preview-img-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
  min-height: 160px;
  background: repeating-conic-gradient(var(--ir-border) 0% 25%, transparent 0% 50%) 50% / 16px 16px;
}
.ir-preview-img-wrap img {
  max-width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: 3px;
}
.ir-preview-info {
  padding: 0.45rem 0.75rem;
  font-size: 0.68rem;
  color: var(--text-secondary);
  font-family: var(--ir-mono);
  border-top: 1px solid var(--ir-border);
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.ir-preview-info span { white-space: nowrap; }
.ir-preview-info .ir-dim { color: var(--ir-accent); font-weight: 600; }
.ir-preview-info .ir-size { color: var(--ir-green); font-weight: 600; }

/* ── Options Grid ── */
.ir-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 480px) { .ir-options-grid { grid-template-columns: 1fr; gap: 0.75rem; } }

/* ── Dimension Inputs ── */
.ir-dim-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.ir-dim-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ir-dim-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.ir-dim-input {
  flex: 1;
  padding: 0.5rem 0.65rem;
  border: 1.5px solid var(--ir-border);
  border-radius: var(--ir-radius);
  background: var(--ir-bg);
  color: var(--text);
  font-family: var(--ir-mono);
  font-size: 0.85rem;
  font-weight: 600;
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
}
.ir-dim-input:focus {
  border-color: var(--ir-accent);
  box-shadow: 0 0 0 3px var(--ir-accent-glow);
}
.ir-dim-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.ir-dim-unit {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  font-weight: 600;
  flex-shrink: 0;
}
.ir-lock-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--ir-border);
  border-radius: 50%;
  background: var(--ir-bg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.9rem;
  flex-shrink: 0;
  padding: 0;
}
.ir-lock-btn:hover {
  border-color: var(--ir-accent);
  color: var(--ir-accent);
  background: var(--ir-accent-light);
}
.ir-lock-btn.active {
  background: var(--ir-accent);
  color: #fff;
  border-color: var(--ir-accent);
}

/* ── Other Controls ── */
.ir-control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  background: var(--ir-bg);
  border: 1.5px solid var(--ir-border);
  border-radius: var(--ir-radius);
}
.ir-control-group legend {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ir-control-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--text);
}
.ir-control-row label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  min-width: 55px;
}
.ir-select,
.ir-number {
  padding: 0.45rem 0.6rem;
  border: 1.5px solid var(--ir-border);
  border-radius: var(--ir-radius);
  background: var(--ir-bg);
  color: var(--text);
  font-family: var(--ir-font);
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.15s;
}
.ir-select:focus,
.ir-number:focus {
  border-color: var(--ir-accent);
  box-shadow: 0 0 0 2px var(--ir-accent-glow);
}
.ir-number { width: 80px; }
.ir-select { flex: 1; min-width: 0; }

/* ── Quality Slider ── */
.ir-quality-wrap { margin-top: 0.25rem; }
.ir-quality-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}
.ir-quality-value {
  font-family: var(--ir-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ir-accent);
}
.ir-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--ir-border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}
.ir-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--ir-accent);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 1px 6px rgba(0,0,0,0.15);
}
.ir-slider::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--ir-accent);
  cursor: pointer;
  border: 2px solid #fff;
}

/* ── Percentage toggle ── */
.ir-pct-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--ir-border);
  border-radius: 100px;
  background: var(--ir-bg);
  transition: all 0.15s;
  user-select: none;
}
.ir-pct-toggle:hover {
  border-color: var(--ir-accent);
  color: var(--ir-accent);
}
.ir-pct-toggle.active {
  background: var(--ir-accent);
  color: #fff;
  border-color: var(--ir-accent);
}
.ir-pct-toggle input { display: none; }

/* ── Result Bar ── */
.ir-result-bar {
  display: none;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--ir-green-bg);
  border: 1px solid var(--ir-green);
  border-radius: var(--ir-radius);
  margin-bottom: 1rem;
  font-size: 0.78rem;
  color: var(--text);
}
.ir-result-bar.show { display: flex; }
.ir-result-icon { font-size: 1.3rem; flex-shrink: 0; }
.ir-result-text { flex: 1; }
.ir-result-text strong { color: var(--ir-green); }

/* ── Error Bar ── */
.ir-error-bar {
  display: none;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  background: var(--ir-red-bg);
  border: 1px solid var(--ir-red);
  border-radius: var(--ir-radius);
  margin-bottom: 1rem;
  font-size: 0.8rem;
  color: var(--ir-red);
}
.ir-error-bar.show { display: flex; }
.ir-error-icon { flex-shrink: 0; font-size: 1.1rem; line-height: 1.3; }

/* ── Action Buttons ── */
.ir-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.ir-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  border: 1.5px solid var(--ir-border);
  border-radius: 50px;
  background: var(--ir-bg);
  color: var(--text-secondary);
  font-family: var(--ir-font);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.ir-action-btn:hover:not(:disabled) {
  border-color: var(--ir-accent);
  color: var(--ir-accent);
  background: var(--ir-accent-light);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--ir-accent-glow);
}
.ir-action-btn:active:not(:disabled) { transform: translateY(0); }
.ir-action-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.ir-action-btn.primary {
  background: var(--ir-accent);
  color: #fff;
  border-color: var(--ir-accent);
}
.ir-action-btn.primary:hover:not(:disabled) { filter: brightness(1.12); }

/* ── Processing Overlay ── */
.ir-processing {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: var(--ir-accent-light);
  border: 1px solid var(--ir-accent);
  border-radius: var(--ir-radius);
  margin-bottom: 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ir-accent);
}
.ir-processing.show { display: flex; }
.ir-spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid var(--ir-border);
  border-top-color: var(--ir-accent);
  border-radius: 50%;
  animation: irSpin 0.6s linear infinite;
}
@keyframes irSpin { to { transform: rotate(360deg); } }

/* ── Toast ── */
.ir-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--ir-accent);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16,1,0.3,1);
  pointer-events: none;
  box-shadow: 0 8px 32px var(--ir-accent-glow);
  white-space: nowrap;
}
.ir-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.ir-toast.error { background: var(--ir-red); }

@media (max-width: 480px) {
  .ir-toast { bottom: 5rem; font-size: 0.78rem; padding: 0.55rem 1.1rem; }
  .ir-dropzone { padding: 1.5rem 1rem; }
  .ir-drop-icon { font-size: 2rem; }
  .ir-action-btn { padding: 0.5rem 1rem; font-size: 0.75rem; }
}