/* ======================================= */
/* FILESIZE CONVERTER - MODERN UNIFIED    */
/* ======================================= */

/* ===== COLOR DEFINITIONS ===== */
/* Dark mode is default, light mode overrides via :root.light-mode */

.filesize-converter-card {
  /* Dark mode colors */
  --filesize-converter-bg-card: var(--secondary-bg);
  --filesize-converter-bg-input: var(--primary-bg);
  --filesize-converter-bg-form: var(--secondary-bg);
  --filesize-converter-border: var(--border-color);
  --filesize-converter-text: var(--text-primary);
  --filesize-converter-text-secondary: var(--text-secondary);
  --filesize-converter-button-bg: var(--link-color);
  --filesize-converter-button-text: var(--text-primary);
  --filesize-converter-button-border: var(--border-color);
  --filesize-converter-button-hover-border: var(--link-color);
  --filesize-converter-button-hover-shadow: rgba(88, 166, 255, 0.2);
  --filesize-converter-type-btn-active-bg: var(--link-color);
  --filesize-converter-type-btn-active-border: var(--link-color);
  --filesize-converter-type-btn-active-shadow: rgba(88, 166, 255, 0.3);
  --filesize-converter-focus-border: var(--link-color);
  --filesize-converter-focus-shadow: rgba(88, 166, 255, 0.1);
  --filesize-converter-size-small: linear-gradient(90deg, #10b981, #059669);
  --filesize-converter-size-medium: linear-gradient(90deg, #fbbf24, #f59e0b);
  --filesize-converter-size-large: linear-gradient(90deg, #f97316, #ea580c);
  --filesize-converter-size-huge: linear-gradient(90deg, #ef4444, #dc2626);
}

/* Light mode color overrides */
:root.light-mode .filesize-converter-card {
  --filesize-converter-bg-card: #ffffff;
  --filesize-converter-bg-input: #ffffff;
  --filesize-converter-bg-form: #f9fafb;
  --filesize-converter-border: #d0d7de;
  --filesize-converter-text: #24292f;
  --filesize-converter-text-secondary: #57606a;
  --filesize-converter-button-bg: #ffffff;
  --filesize-converter-button-text: #24292f;
  --filesize-converter-button-border: #d0d7de;
  --filesize-converter-button-hover-border: #0969da;
  --filesize-converter-button-hover-shadow: rgba(9, 105, 218, 0.15);
  --filesize-converter-type-btn-active-bg: #0969da;
  --filesize-converter-type-btn-active-border: #0969da;
  --filesize-converter-type-btn-active-shadow: rgba(9, 105, 218, 0.2);
  --filesize-converter-focus-border: #0969da;
  --filesize-converter-focus-shadow: rgba(9, 105, 218, 0.1);
  --filesize-converter-size-small: linear-gradient(90deg, #057a55, #0d9488);
  --filesize-converter-size-medium: linear-gradient(90deg, #ca8a04, #eab308);
  --filesize-converter-size-large: linear-gradient(90deg, #ea580c, #fb923c);
  --filesize-converter-size-huge: linear-gradient(90deg, #dc2626, #f87171);
}

/* ===== MAIN CARD ===== */
.filesize-converter-card {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem;
  background: var(--filesize-converter-bg-card);
  border: 1px solid var(--filesize-converter-border);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  color: var(--filesize-converter-text);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

/* Gradient top border */
.filesize-converter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #9333ea, #3b82f6, #9333ea);
  background-size: 200% 100%;
  animation: filesize-converter-gradient-shift 3s ease infinite;
}

@keyframes filesize-converter-gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ===== HEADER ===== */
.filesize-converter-card h1 {
  color: var(--filesize-converter-text);
  font-size: 1.6rem;
  margin-bottom: 1rem;
  text-align: center;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.filesize-converter-subtitle {
  text-align: center;
  color: var(--filesize-converter-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  font-weight: 400;
  line-height: 1.6;
}

/* ===== LAYOUT ===== */
.filesize-converter-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1rem;
  align-items: start;
}

.filesize-converter-column {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ===== LABELS ===== */
.filesize-converter-card label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--filesize-converter-text);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ===== INPUT GROUPS ===== */
.filesize-converter-input-group {
  margin-bottom: 0;
}

.filesize-converter-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--filesize-converter-bg-input);
  border: 2px solid var(--filesize-converter-border);
  border-radius: 12px;
  overflow: hidden;
  height: 56px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.filesize-converter-input-wrapper:focus-within {
  border-color: var(--filesize-converter-focus-border);
  box-shadow: 0 0 0 3px var(--filesize-converter-focus-shadow);
}

.filesize-converter-input-wrapper input[type="text"],
.filesize-converter-input-wrapper input[type="number"] {
  flex-grow: 1;
  border: none;
  background: transparent;
  text-align: center;
  font-size: 1.1rem;
  padding: 0 20px;
  height: 100%;
  color: var(--filesize-converter-text);
  font-weight: 600;
  width: 100%;
}

.filesize-converter-input-wrapper input:focus {
  outline: none;
}

.filesize-converter-input-wrapper input::-webkit-inner-spin-button,
.filesize-converter-input-wrapper input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.filesize-converter-input-wrapper input {
  -moz-appearance: textfield;
}

/* ===== ARROW CONTROLS ===== */
.filesize-converter-arrow-controls {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-left: 1px solid var(--filesize-converter-border);
}

.filesize-converter-arrow-btn {
  flex: 1;
  width: 50px;
  background: var(--filesize-converter-button-bg);
  color: var(--filesize-converter-button-text);
  border: none;
  cursor: pointer;
  font-size: 1.4rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  position: relative;
}

.filesize-converter-arrow-btn.up {
  border-bottom: 1px solid var(--filesize-converter-border);
}

.filesize-converter-arrow-btn:hover {
  background: var(--filesize-converter-type-btn-active-bg);
  color: white;
}

.filesize-converter-arrow-btn:active {
  transform: scale(0.95);
}

/* ===== SELECT GROUP ===== */
.filesize-converter-select-group {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--filesize-converter-bg-form);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-select-wrapper {
  flex: 1;
}

.filesize-converter-select-wrapper label {
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.filesize-converter-select-group select {
  width: 100%;
  padding: 14px 16px;
  background: var(--filesize-converter-bg-input);
  color: var(--filesize-converter-text);
  border: 2px solid var(--filesize-converter-border);
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

.filesize-converter-select-group select:hover {
  border-color: var(--filesize-converter-button-hover-border);
  transform: translateY(-1px);
}

.filesize-converter-select-group select:focus {
  outline: none;
  border-color: var(--filesize-converter-focus-border);
  box-shadow: 0 0 0 3px var(--filesize-converter-focus-shadow);
}

/* ===== SWAP BUTTON ===== */
.filesize-converter-swap-btn {
  width: 40px;
  height: 40px;
  background: var(--filesize-converter-button-bg);
  border: 2px solid var(--filesize-converter-border);
  border-radius: 10px;
  color: var(--filesize-converter-text);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 24px;
}

.filesize-converter-swap-btn:hover {
  background: var(--filesize-converter-type-btn-active-bg);
  border-color: var(--filesize-converter-type-btn-active-border);
  color: white;
  transform: rotate(180deg);
}

.filesize-converter-swap-btn:active {
  transform: rotate(180deg) scale(0.9);
}

/* ===== MODE SECTION (Binary/Decimal) ===== */
.filesize-converter-mode-section {
  background: var(--filesize-converter-bg-form);
  padding: 15px;
  border-radius: 12px;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-mode-section label {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.filesize-converter-mode-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.filesize-converter-mode-btn {
  flex: 1;
  padding: 0.625rem 1rem;
  background: var(--filesize-converter-button-bg);
  border: 2px solid var(--filesize-converter-border);
  border-radius: 8px;
  color: var(--filesize-converter-button-text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.filesize-converter-mode-btn:hover {
  border-color: var(--filesize-converter-button-hover-border);
  background: var(--filesize-converter-bg-card);
  transform: translateY(-1px);
}

.filesize-converter-mode-btn.active {
  background: var(--filesize-converter-type-btn-active-bg) !important;
  border-color: var(--filesize-converter-type-btn-active-border) !important;
  color: white !important;
  box-shadow: 0 4px 12px var(--filesize-converter-type-btn-active-shadow);
}

.filesize-converter-mode-info {
  margin: 0;
  padding: 0.75rem;
  background: var(--filesize-converter-bg-input);
  border: 1px solid var(--filesize-converter-border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--filesize-converter-text-secondary);
  font-style: italic;
  transition: all 0.3s ease;
}

/* ===== QUICK SELECT ===== */
.filesize-converter-quick-select {
  background: var(--filesize-converter-bg-form);
  padding: 15px;
  border-radius: 12px;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-quick-select label {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.filesize-converter-quick-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filesize-converter-quick-btn {
  padding: 0.5rem 0.875rem;
  background: var(--filesize-converter-button-bg);
  border: 2px solid var(--filesize-converter-border);
  border-radius: 8px;
  color: var(--filesize-converter-button-text);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.filesize-converter-quick-btn:hover {
  border-color: var(--filesize-converter-button-hover-border);
  background: var(--filesize-converter-bg-card);
  transform: translateY(-2px);
}

.filesize-converter-quick-btn:active {
  transform: translateY(0);
}

/* ===== MAIN RESULT DISPLAY ===== */
.filesize-converter-result {
  margin-top: 0;
}

.filesize-converter-result-display {
  background: var(--filesize-converter-type-btn-active-bg);
  border: 2px solid var(--filesize-converter-type-btn-active-border);
  border-radius: 12px;
  padding: 25px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  box-shadow: 0 4px 20px var(--filesize-converter-type-btn-active-shadow);
  transition: all 0.3s ease;
}

.filesize-converter-result-display:hover {
  box-shadow: 0 6px 30px var(--filesize-converter-type-btn-active-shadow);
  transform: translateY(-2px);
}

.filesize-converter-result-value {
  font-family: "Courier New", "Roboto Mono", monospace;
  font-size: 2rem;
  font-weight: 700;
  color: white;
  line-height: 1;
}

.filesize-converter-result-unit {
  font-family: "Courier New", "Roboto Mono", monospace;
  font-size: 1.3rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1;
}

/* ===== CONTEXT HELP ===== */
.filesize-converter-context {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--filesize-converter-bg-form);
  border: 1px solid var(--filesize-converter-border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--filesize-converter-text-secondary);
  text-align: center;
  font-style: italic;
  transition: all 0.3s ease;
}

/* ===== ALL RESULTS SECTION ===== */
.filesize-converter-all-results {
  background: var(--filesize-converter-bg-form);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-all-results h3 {
  color: var(--filesize-converter-text);
  font-size: 1.1rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.filesize-converter-results-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.filesize-converter-result-item {
  background: var(--filesize-converter-bg-input);
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--filesize-converter-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
}

.filesize-converter-result-item:hover {
  border-color: var(--filesize-converter-button-hover-border);
  transform: translateX(4px);
}

.filesize-converter-result-label {
  font-size: 0.9rem;
  color: var(--filesize-converter-text-secondary);
  font-weight: 500;
}

.filesize-converter-result-value-small {
  font-size: 0.95rem;
  color: var(--filesize-converter-type-btn-active-bg);
  font-weight: 700;
  font-family: "Courier New", monospace;
  text-align: right;
}

/* ===== VISUALIZATION SECTION ===== */
.filesize-converter-visual {
  background: var(--filesize-converter-bg-form);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-visual h3 {
  color: var(--filesize-converter-text);
  font-size: 1.1rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.filesize-converter-size-comparison {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.filesize-converter-size-bar {
  height: 30px;
  background: var(--filesize-converter-bg-input);
  border-radius: 15px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-size-fill {
  height: 100%;
  width: 0%;
  background: var(--filesize-converter-size-small);
  border-radius: 15px;
  transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.5s ease;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.filesize-converter-size-fill.medium {
  background: var(--filesize-converter-size-medium);
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.3);
}

.filesize-converter-size-fill.large {
  background: var(--filesize-converter-size-large);
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.3);
}

.filesize-converter-size-fill.huge {
  background: var(--filesize-converter-size-huge);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.filesize-converter-fill-percentage {
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.filesize-converter-size-fill:hover .filesize-converter-fill-percentage {
  opacity: 1;
}

.filesize-converter-size-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: filesize-converter-shimmer 2s infinite;
}

@keyframes filesize-converter-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.filesize-converter-size-label {
  text-align: center;
  font-size: 0.95rem;
  color: var(--filesize-converter-text);
  font-weight: 600;
  padding: 8px;
  background: var(--filesize-converter-bg-input);
  border-radius: 8px;
  border: 1px solid var(--filesize-converter-border);
}

/* ===== RESET BUTTON ===== */
.filesize-converter-reset-btn {
  padding: 0.875rem 1.5rem;
  background: var(--filesize-converter-button-bg);
  border: 2px solid var(--filesize-converter-border);
  border-radius: 8px;
  color: var(--filesize-converter-button-text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.filesize-converter-reset-btn:hover {
  border-color: var(--filesize-converter-button-hover-border);
  background: var(--filesize-converter-bg-card);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--filesize-converter-button-hover-shadow);
}

.filesize-converter-reset-btn:active {
  transform: translateY(0);
}

/* ===== NOTE ===== */
.filesize-converter-note {
  text-align: center;
  margin-top: 1rem;
  padding: 12px;
  background: var(--filesize-converter-bg-input);
  border-radius: 8px;
  border: 1px solid var(--filesize-converter-border);
}

.filesize-converter-note small {
  color: var(--filesize-converter-text-secondary);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ===== RESPONSIVE - TABLET ===== */
@media (max-width: 768px) {
  .filesize-converter-card {
    padding: 1rem;
  }

  .filesize-converter-card h1 {
    font-size: 1.5rem;
  }

  .filesize-converter-subtitle {
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
  }

  .filesize-converter-content {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .filesize-converter-result-value {
    font-size: 1.6rem;
  }

  .filesize-converter-result-unit {
    font-size: 1.1rem;
  }

  .filesize-converter-mode-toggle {
    flex-direction: column;
  }

  .filesize-converter-quick-buttons {
    justify-content: center;
  }
}

/* ===== RESPONSIVE - MOBILE ===== */
@media (max-width: 480px) {
  .filesize-converter-card {
    padding: 1rem;
    border-radius: 12px;
  }

  .filesize-converter-card h1 {
    font-size: 1.35rem;
  }

  .filesize-converter-subtitle {
    font-size: 0.8rem;
  }

  .filesize-converter-input-wrapper {
    height: 50px;
  }

  .filesize-converter-arrow-btn {
    width: 45px;
    font-size: 1.2rem;
  }

  .filesize-converter-input-wrapper input {
    font-size: 1rem;
  }

  .filesize-converter-select-group {
    flex-direction: column;
    gap: 15px;
    padding: 16px;
  }

  .filesize-converter-swap-btn {
    transform: rotate(90deg);
    align-self: center;
    margin-top: 0;
  }

  .filesize-converter-swap-btn:hover {
    transform: rotate(270deg);
  }

  .filesize-converter-result-display {
    padding: 20px;
    min-height: 70px;
    flex-direction: column;
    gap: 8px;
  }

  .filesize-converter-result-value {
    font-size: 1.4rem;
  }

  .filesize-converter-result-unit {
    font-size: 1rem;
  }

  .filesize-converter-result-item {
    padding: 10px 14px;
  }

  .filesize-converter-result-label {
    font-size: 0.85rem;
  }

  .filesize-converter-result-value-small {
    font-size: 0.9rem;
  }

  .filesize-converter-note small {
    font-size: 0.8rem;
  }

  .filesize-converter-mode-btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
  }

  .filesize-converter-quick-buttons {
    gap: 0.4rem;
  }

  .filesize-converter-quick-btn {
    padding: 0.4rem 0.7rem;
    font-size: 0.8rem;
  }
}

/* ===== EXTRA SMALL SCREENS ===== */
@media (max-width: 375px) {
  .filesize-converter-card {
    padding: 1rem;
  }

  .filesize-converter-card h1 {
    font-size: 1.3rem;
  }

  .filesize-converter-subtitle {
    font-size: 0.75rem;
  }

  .filesize-converter-result-value {
    font-size: 1.2rem;
  }
}