/* ======================================= */
/* BASIS CONVERTER - Modern Styled         */
/* ======================================= */

.basis-converter-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 35px;
  background: linear-gradient(145deg, var(--card-bg) 0%, var(--secondary-bg) 100%);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  color: var(--text-color);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.basis-converter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue), var(--accent-purple));
  background-size: 200% 100%;
  animation: basis-gradient-shift 3s ease infinite;
}

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

.basis-converter-card h1 {
  color: var(--text-primary);
  font-size: 2rem;
  margin-bottom: 8px;
  text-align: center;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.basis-converter-card-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 30px;
  font-weight: 400;
  line-height: 1.6;
}

.basis-converter-card-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 25px;
  align-items: start;
}

.basis-converter-card-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Labels */
.basis-converter-card label {
  display: block;
  margin-bottom: 10px;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Input Section */
.basis-converter-card-input-section {
  margin-bottom: 5px;
}

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

.basis-converter-card-input-wrapper:focus-within {
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.2);
}

.basis-converter-card-input-wrapper input[type="text"] {
  flex-grow: 1;
  border: none;
  background: transparent;
  text-align: center;
  font-size: 1.1rem;
  padding: 0 20px;
  height: 100%;
  color: var(--text-primary);
  font-weight: 600;
  width: 100%;
  font-family: "Courier New", "Roboto Mono", monospace;
}

.basis-converter-card-input-wrapper input[type="text"]:focus {
  outline: none;
}

.basis-converter-card-input-wrapper input[type="text"]::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

/* Select Section */
.basis-converter-card-select-section {
  background: var(--overlay-medium);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(45, 55, 72, 0.5);
}

.basis-converter-card-select-section label {
  margin-bottom: 12px;
}

.basis-converter-card-select-section select {
  width: 100%;
  padding: 14px 16px;
  background: var(--overlay-dark);
  color: var(--text-primary);
  border: 2px solid var(--border-dark);
  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;
}

.basis-converter-card-select-section select:hover {
  border-color: var(--accent-purple);
  transform: translateY(-1px);
}

.basis-converter-card-select-section select:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.2);
}

/* Feedback Message */
.basis-converter-card-feedback {
  opacity: 0;
  transition: all 0.3s ease;
  transform: translateY(10px);
  padding: 12px 16px;
  border-radius: 10px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.basis-converter-card-feedback.visible {
  opacity: 1;
  transform: translateY(0);
}

.basis-converter-card-feedback.success {
  background: linear-gradient(135deg, var(--strength-strong) 0%, #059669 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.basis-converter-card-feedback.error {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

/* Results Section */
.basis-converter-card-results-section {
  background: var(--overlay-medium);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(45, 55, 72, 0.5);
}

.basis-converter-card-results-section h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 18px;
  font-weight: 600;
  text-align: center;
}

.basis-converter-card-result-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 15px;
}

.basis-converter-card-result-row:last-child {
  margin-bottom: 0;
}

.basis-converter-card-result-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.basis-converter-card-result-display {
  background: var(--overlay-dark);
  border: 2px solid var(--border-dark);
  border-radius: 10px;
  padding: 14px 16px;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.basis-converter-card-result-display:hover {
  border-color: var(--accent-purple);
  transform: translateX(4px);
}

.basis-converter-card-result-display::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(147, 51, 234, 0.1), transparent);
  transition: left 0.5s ease;
}

.basis-converter-card-result-display:hover::before {
  left: 100%;
}

.basis-converter-card-result-value {
  flex-grow: 1;
  font-family: "Courier New", "Roboto Mono", monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-blue);
  word-break: break-all;
  line-height: 1.4;
}

.basis-converter-card-copy-button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 6px 10px;
  flex-shrink: 0;
  transition: all 0.2s ease;
  border-radius: 6px;
}

.basis-converter-card-copy-button:hover {
  color: var(--accent-purple);
  background: rgba(147, 51, 234, 0.1);
  transform: scale(1.1);
}

.basis-converter-card-copy-button:active {
  transform: scale(0.95);
}

/* Responsive - Tablet */
@media (max-width: 768px) {
  .basis-converter-card {
    padding: 25px 20px;
  }

  .basis-converter-card h1 {
    font-size: 1.6rem;
  }

  .basis-converter-card-subtitle {
    font-size: 0.85rem;
    margin-bottom: 25px;
  }

  .basis-converter-card-layout {
    grid-template-columns: 1fr;
    gap: 25px;
  }
}

/* Responsive - Mobile */
@media (max-width: 480px) {
  .basis-converter-card {
    padding: 20px 15px;
    border-radius: 16px;
  }

  .basis-converter-card h1 {
    font-size: 1.4rem;
  }

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

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

  .basis-converter-card-input-wrapper input[type="text"] {
    font-size: 1rem;
  }

  .basis-converter-card-select-section {
    padding: 16px;
  }

  .basis-converter-card-result-display {
    padding: 12px 14px;
    min-height: 46px;
  }

  .basis-converter-card-result-value {
    font-size: 0.95rem;
  }

  .basis-converter-card-copy-button {
    font-size: 1.1rem;
    padding: 4px 8px;
  }

  .basis-converter-card-feedback {
    padding: 10px 14px;
    font-size: 0.85rem;
  }
}

/* Extra small screens */
@media (max-width: 375px) {
  .basis-converter-card {
    padding: 16px 12px;
  }

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

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

  .basis-converter-card-result-value {
    font-size: 0.9rem;
  }
}