/* =============================================
   Social Media Badge Generator — Styles
   Font: Montserrat | Responsive | Modern & Clean
   ============================================= */

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

:root {
  --color-primary: #FF754B;
  --color-primary-light: #FF8F6B;
  --color-accent: #FF754B;
  --color-bg: #111111;
  --color-surface: #1A1A1A;
  --color-surface-hover: #222222;
  --color-white: #ffffff;
  --color-text: #F0F0F0;
  --color-text-secondary: #9CA3AF;
  --color-border: #2E2E2E;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.2s ease;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(17, 17, 17, 0.92);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header__logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.header__tagline {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Hero */
.hero {
  text-align: center;
  padding: 48px 0 40px;
}

.hero__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--color-text);
}

.hero__title span {
  background: linear-gradient(135deg, #FF754B, #FF9A76);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  margin-top: 12px;
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Generator Layout */
.generator {
  display: grid;
  grid-template-columns: auto 380px;
  gap: 40px;
  align-items: start;
  padding-bottom: 64px;
}

/* Canvas Preview */
.generator__preview {
  position: sticky;
  top: 100px;
  justify-self: end;
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  background: #1A1A1A;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  cursor: grab;
}

.canvas-wrapper:active {
  cursor: grabbing;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Upload Overlay */
.upload-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(17, 17, 17, 0.85);
  backdrop-filter: blur(4px);
  transition: opacity var(--transition);
  cursor: pointer;
}

.upload-overlay--hidden {
  opacity: 0;
  pointer-events: none;
}

.upload-overlay__content {
  text-align: center;
  padding: 32px;
}

.upload-overlay__icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.upload-overlay__text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.upload-overlay__text strong {
  color: var(--color-accent);
}

/* Drag-over state */
.canvas-wrapper.drag-over .upload-overlay {
  opacity: 1;
  pointer-events: auto;
  background: rgba(255, 117, 75, 0.08);
  border: 2px dashed var(--color-accent);
  border-radius: var(--radius);
}

/* Controls */
.generator__controls {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.control-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.control-card:hover {
  box-shadow: var(--shadow-md);
  background: var(--color-surface-hover);
}

.control-card--disabled {
  opacity: 0.4;
  pointer-events: none;
  user-select: none;
}

.control-card--disabled:hover {
  box-shadow: var(--shadow-sm);
  background: var(--color-surface);
}

.control-card__title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.control-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  font-weight: 500;
}

.control-card__hint {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 12px;
}

/* Upload Button */
.upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: #111111;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.upload-btn svg {
  width: 18px;
  height: 18px;
}

.upload-btn:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Slider */
.slider-group {
  margin-bottom: 8px;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.slider-value {
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
  font-weight: 700;
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--color-border);
  outline: none;
  transition: background var(--transition);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: 3px solid var(--color-surface);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition);
}

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

.slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: 3px solid var(--color-surface);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Download Button */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  justify-content: center;
  background: linear-gradient(135deg, #FF754B, #FF9A76);
  color: #111111;
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.download-btn svg {
  width: 20px;
  height: 20px;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 117, 75, 0.3);
}

.download-btn:active {
  transform: translateY(0);
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 24px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

/* =============================================
   Responsive
   ============================================= */

@media (max-width: 900px) {
  .generator {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .generator__preview {
    position: static;
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }

  .hero {
    padding: 32px 0 28px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero__title {
    font-size: 1.5rem;
  }

  .hero__subtitle {
    font-size: 0.9rem;
  }

  .control-card {
    padding: 18px;
  }

  .upload-btn, .download-btn {
    width: 100%;
    justify-content: center;
  }
}