:root {
  --bg-color: #f5f7fa;
  --text-color: #2d3748;
  --card-bg: #ffffff;
  --input-bg: #f8fafc;
  --input-border: #e2e8f0;
  --switch-bg: #edf2f7;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-color: #667eea;
  --success-color: #48bb78;
  /* Toggle Switch Colors */
  --toggle-off-bg: #e2e8f0;
  --toggle-off-border: #cbd5e0;
  --toggle-on-bg: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  --toggle-knob: #ffffff;
  --toggle-knob-shadow: rgba(0, 0, 0, 0.15);
  --card-checked-bg: linear-gradient(
    135deg,
    rgba(72, 187, 120, 0.12) 0%,
    rgba(56, 161, 105, 0.12) 100%
  );
  --card-checked-border: #48bb78;
}

[data-theme="dark"] {
  --bg-color: #1a1a2e;
  --text-color: #eaeaea;
  --card-bg: #16213e;
  --input-bg: #0f3460;
  --input-border: #0f3460;
  --switch-bg: #0f3460;
  /* Toggle Switch Colors - Dark Mode */
  --toggle-off-bg: #2d3748;
  --toggle-off-border: #4a5568;
  --toggle-on-bg: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  --toggle-knob: #ffffff;
  --toggle-knob-shadow: rgba(0, 0, 0, 0.3);
  --card-checked-bg: linear-gradient(
    135deg,
    rgba(72, 187, 120, 0.2) 0%,
    rgba(56, 161, 105, 0.2) 100%
  );
  --card-checked-border: #48bb78;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: all 0.3s ease;
}

.form-control {
  background-color: var(--input-bg);
  border-color: var(--input-border);
  color: var(--text-color);
}

.form-control:focus {
  background-color: var(--input-bg);
  color: var(--text-color);
}

.form-check-label {
  color: var(--text-color);
}

/* Modern Dark Mode Toggle */
.theme-switch-wrapper {
  display: flex;
  align-items: center;
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
}

.theme-switch {
  display: inline-block;
  height: 34px;
  position: relative;
  width: 60px;
}

.theme-switch input {
  display: none;
}

.slider {
  background-color: #ccc;
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: 0.4s;
  border-radius: 34px;
}

.slider:before {
  background-color: #fff;
  bottom: 4px;
  content: "";
  height: 26px;
  left: 4px;
  position: absolute;
  transition: 0.4s;
  width: 26px;
  border-radius: 50%;
}

input:checked + .slider {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

.slider .icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  transition: 0.4s;
}

.slider .sun {
  left: 8px;
  opacity: 1;
}

.slider .moon {
  right: 8px;
  opacity: 0;
}

input:checked + .slider .sun {
  opacity: 0;
}

input:checked + .slider .moon {
  opacity: 1;
}

/* Result Card Styling */
.result-switch {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 10px 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  border: 1px solid var(--input-border);
  width: 100%;
}

.result-switch:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
  border-color: var(--accent-color);
}

.result-switch.checked {
  background: var(--card-checked-bg);
  border-color: var(--card-checked-border);
}

/* Custom 5 column class */
.col-5ths {
  flex: 0 0 20%;
  max-width: 20%;
  padding-right: 0.25rem;
  padding-left: 0.25rem;
}

/* Responsive result columns */
.col-result {
  display: flex;
  justify-content: center;
}

@media (max-width: 768px) {
  .col-result {
    flex: 0 0 33.333%;
    max-width: 33.333%;
  }

  .col-5ths {
    flex: 0 0 33.333%;
    max-width: 33.333%;
  }

  .result-number {
    font-size: 1rem !important;
    letter-spacing: 1px !important;
  }

  .toggle-switch {
    width: 44px !important;
    height: 24px !important;
  }

  .toggle-slider:before {
    height: 18px !important;
    width: 18px !important;
  }

  .toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(20px) !important;
  }
}

@media (max-width: 576px) {
  .col-result {
    flex: 0 0 50%;
    max-width: 50%;
  }

  .col-5ths {
    flex: 0 0 50%;
    max-width: 50%;
  }

  .result-switch {
    padding: 8px 10px;
  }
}

/* Modern Toggle Switch for Results */
.toggle-switch {
  position: relative;
  width: 52px;
  height: 28px;
  flex-shrink: 0;
}

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

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--toggle-off-bg);
  border: 2px solid var(--toggle-off-border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 28px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background-color: var(--toggle-knob);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 50%;
  box-shadow: 0 2px 6px var(--toggle-knob-shadow);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--toggle-on-bg);
  border-color: #38a169;
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(24px);
  box-shadow: 0 2px 8px rgba(72, 187, 120, 0.4);
}

.toggle-switch input:focus + .toggle-slider {
  box-shadow: 0 0 0 3px rgba(72, 187, 120, 0.25);
}

.result-number {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-color);
  min-width: 50px;
  text-align: center;
  font-family: "SF Mono", "Monaco", "Consolas", monospace;
  letter-spacing: 2px;
}

.result-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.total-badge {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 10px 20px;
  border-radius: 25px;
  font-weight: bold;
  display: inline-block;
  margin-bottom: 20px;
}

.total-info {
  color: var(--text-color);
  font-size: 14px;
  opacity: 0.8;
  margin-left: 10px;
}

/* Load More Button */
.btn-load-more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 40px;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-color);
  background: transparent;
  border: 2px solid var(--accent-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-load-more:hover {
  color: white;
  background: var(--accent-gradient);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

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

.btn-load-more .load-icon {
  font-size: 18px;
  transition: transform 0.3s ease;
}

.btn-load-more:hover .load-icon {
  transform: rotate(180deg);
}

/* Input Card Container */
.input-card {
  background-color: var(--card-bg);
  border-radius: 20px;
  padding: 25px 30px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.input-card:hover {
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

/* Modern Input Styling */
.modern-input-wrapper {
  position: relative;
  width: 100%;
}

.modern-input {
  width: 100%;
  padding: 14px 20px 14px 50px;
  font-size: 16px;
  font-weight: 500;
  border: 2px solid var(--input-border);
  border-radius: 12px;
  background-color: var(--input-bg);
  color: var(--text-color);
  transition: all 0.3s ease;
  outline: none;
}

.modern-input::placeholder {
  color: #999;
  font-weight: 400;
}

.modern-input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

.modern-input.error {
  border-color: #ff6b6b;
  animation: shake 0.5s ease;
}

.input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  pointer-events: none;
}

.tooltip-error {
  position: absolute;
  bottom: -35px;
  left: 0;
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
  color: white;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: all 0.3s ease;
  white-space: nowrap;
  z-index: 10;
}

.tooltip-error::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 20px;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid #ff6b6b;
}

.tooltip-error.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  20%,
  60% {
    transform: translateX(-8px);
  }
  40%,
  80% {
    transform: translateX(8px);
  }
}

/* Modern Generate Button */
.btn-generate {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-generate::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.btn-generate:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-generate:hover::before {
  left: 100%;
}

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

.btn-icon {
  font-size: 18px;
  transition: transform 0.3s ease;
}

.btn-generate:hover .btn-icon {
  transform: rotate(20deg) scale(1.2);
}

/* Modern Checkbox */
.modern-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.modern-checkbox input {
  display: none;
}

.checkbox-box {
  width: 24px;
  height: 24px;
  border: 2px solid #ccc;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  background-color: var(--input-bg);
}

.checkbox-box svg {
  width: 14px;
  height: 14px;
  stroke: white;
  opacity: 0;
  transform: scale(0);
  transition: all 0.2s ease;
}

.modern-checkbox input:checked + .checkbox-box {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-color: #667eea;
}

.modern-checkbox input:checked + .checkbox-box svg {
  opacity: 1;
  transform: scale(1);
}

.checkbox-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.modern-checkbox:hover .checkbox-box {
  border-color: #667eea;
}