/* ========================================================
   OptiPixel Studio — Modern Styling
   ======================================================== */

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #131b2e;
  --bg-card: rgba(22, 31, 51, 0.75);
  --bg-card-hover: rgba(29, 41, 69, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #6366f1;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-primary: #6366f1;
  --accent-secondary: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --accent-glow: rgba(99, 102, 241, 0.25);
  
  --badge-green-bg: rgba(16, 185, 129, 0.15);
  --badge-green-text: #34d399;
  --badge-blue-bg: rgba(59, 130, 246, 0.15);
  --badge-blue-text: #60a5fa;
  --badge-amber-bg: rgba(245, 158, 11, 0.15);
  --badge-amber-text: #fbbf24;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.2);
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #ffffff;
  --border-color: rgba(0, 0, 0, 0.08);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 45%);
  background-attachment: fixed;
}

.app-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
}

.brand-text h1 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-text h1 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text .tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.privacy-badge {
  background: var(--badge-green-bg);
  color: var(--badge-green-text);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--border-focus);
}

/* Dropzone */
.dropzone-section {
  margin-bottom: 1.75rem;
}

.dropzone {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 2px dashed rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.dropzone-icon {
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: center;
}

.dropzone h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.dropzone h3 .highlight {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.dropzone-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.dropzone-sub kbd {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.format-tags {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* Controls Card */
.controls-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.controls-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.controls-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-main);
}

.controls-title h2 {
  font-size: 1.1rem;
  font-weight: 700;
}

.presets-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.preset-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 600;
  padding: 0 0.4rem;
}

.btn-preset {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-preset:hover {
  color: var(--text-main);
}

.btn-preset.active {
  background: var(--accent-primary);
  color: white;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.info-tooltip {
  cursor: help;
  opacity: 0.6;
  font-size: 0.75rem;
}

.value-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.format-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.3rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.format-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.5rem 0.2rem;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.format-btn.active {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.range-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.7);
  transition: transform 0.1s;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.range-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-dim);
}

.custom-select {
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.custom-select:focus {
  border-color: var(--accent-primary);
}

.custom-dimensions {
  margin-top: 0.5rem;
}

.dim-inputs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dim-inputs input {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.full-width-group {
  grid-column: 1 / -1;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.target-size-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider.round {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .3s;
  border-radius: 34px;
}

.slider.round:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background: var(--accent-primary);
}

input:checked + .slider:before {
  transform: translateX(18px);
}

.switch-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.target-size-input-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.target-size-input-wrapper input {
  width: 100px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.unit-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-left: 0.5rem;
}

/* Results Section */
.results-section {
  animation: fadeIn 0.3s ease;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.results-stats h2 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
}

.stat-pills {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.stat-pill {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.stat-pill.highlight strong {
  color: #38bdf8;
}

.stat-pill.saved {
  background: var(--badge-green-bg);
  color: var(--badge-green-text);
  font-weight: 700;
  border-color: rgba(52, 211, 153, 0.3);
}

.batch-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.image-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  position: relative;
}

.image-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-md);
}

.card-preview {
  position: relative;
  height: 180px;
  background: #000000;
  background-image: 
    linear-gradient(45deg, #18181b 25%, transparent 25%), 
    linear-gradient(-45deg, #18181b 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, #18181b 75%), 
    linear-gradient(-45deg, transparent 75%, #18181b 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.2s ease;
}

.card-preview:hover img {
  transform: scale(1.03);
}

.preview-overlay-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  opacity: 0.85;
  transition: all 0.2s;
}

.preview-overlay-btn:hover {
  opacity: 1;
  background: var(--accent-primary);
}

.card-savings-badge {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(16, 185, 129, 0.9);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.card-savings-badge.negative {
  background: rgba(239, 68, 68, 0.9);
}

.card-details {
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.card-filename {
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

.card-resolution {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.card-sizes {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.size-orig {
  color: var(--text-dim);
  text-decoration: line-through;
}

.size-comp {
  color: #38bdf8;
  font-weight: 700;
}

.card-format-selector {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.card-format-selector label {
  color: var(--text-muted);
  font-weight: 600;
}

.card-format-selector select {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  font-size: 0.8rem;
}

/* Card Download Action Buttons: Download JPG vs Download PNG */
.card-download-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: auto;
}

.btn-download-fmt {
  padding: 0.45rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.btn-download-jpg {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border-color: rgba(99, 102, 241, 0.3);
}

.btn-download-jpg:hover {
  background: var(--accent-primary);
  color: white;
}

.btn-download-png {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.btn-download-png:hover {
  background: #10b981;
  color: white;
}

/* Comparison Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 980px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.modal-header {
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.modal-title-wrap h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-dimensions {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.modal-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.modal-badge-group {
  display: flex;
  gap: 0.5rem;
}

.badge-orig {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.badge-comp {
  background: var(--badge-blue-bg);
  color: var(--badge-blue-text);
}

.badge-saved {
  background: var(--badge-green-bg);
  color: var(--badge-green-text);
}

.close-modal-btn {
  background: transparent;
  border: none;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem;
}

.close-modal-btn:hover {
  color: white;
}

.modal-body {
  padding: 1.5rem;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1;
  background: #090d16;
}

/* Split Slider Container */
.split-slider-container {
  position: relative;
  max-width: 100%;
  max-height: 60vh;
  overflow: hidden;
  user-select: none;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
  background-image: 
    linear-gradient(45deg, #18181b 25%, transparent 25%), 
    linear-gradient(-45deg, #18181b 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, #18181b 75%), 
    linear-gradient(-45deg, transparent 75%, #18181b 75%);
  background-size: 20px 20px;
}

.split-img {
  display: block;
  max-width: 100%;
  max-height: 58vh;
  object-fit: contain;
  pointer-events: none;
}

.split-curtain {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.split-curtain .comp-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  transform: translateX(-50%);
  cursor: ew-resize;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.handle-line {
  width: 2px;
  background: white;
  flex-grow: 1;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.6);
}

.handle-circle {
  width: 34px;
  height: 34px;
  background: white;
  border-radius: 50%;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.label-curtain {
  position: absolute;
  top: 12px;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  pointer-events: none;
}

.orig-label {
  right: 12px;
}

.comp-label {
  left: 12px;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.modal-hint {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.modal-download-actions {
  display: flex;
  gap: 0.6rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 2000;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Utilities */
.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile responsive */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .controls-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .results-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .modal-dialog {
    max-height: 95vh;
  }
}