/* === TOOL-SPECIFIC STYLES === */

/* QR Code preview */
.qr-preview {
  display: flex;
  justify-content: center;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  border: 2px dashed var(--border);
}
.qr-preview canvas {
  max-width: 100%;
  height: auto;
}

/* Calculator display */
.calc-display {
  background: var(--input-bg);
  border-radius: 12px;
  padding: 20px;
  font-size: 2rem;
  font-weight: 700;
  text-align: right;
  font-family: 'Courier New', monospace;
  min-height: 80px;
  word-break: break-all;
  border: 2px solid var(--border);
  margin-bottom: 15px;
}

.calc-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.calc-btn {
  padding: 16px;
  border: none;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: var(--input-bg);
  color: var(--text);
  transition: all 0.2s ease;
}
.calc-btn:hover {
  transform: scale(0.9);
}
.calc-btn:active {
  transform: scale(0.8);
}
.calc-btn.sc {
  padding: 10px 2px;
  font-size: 0.72rem;
  border-radius: 8px;
}
.calc-btn.operator {
  background: var(--gradient-primary);
  color: #fff;
}
.calc-btn.equals {
  background: var(--secondary);
  color: #fff;
  grid-column: span 2;
}
.calc-btn.clear {
  background: #e74c3c;
  color: #fff;
}

/* Password strength bar */
.password-strength {
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--border);
  margin: 10px 0;
}
.password-strength .fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease, background 0.5s ease;
}

/* Color picker */
.color-preview-swatch {
  width: 100px;
  height: 100px;
  border-radius: 16px;
  border: 2px solid var(--border);
  transition: background 0.3s ease;
}

/* Unit converter grid */
.unit-converter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 600px) {
  .unit-converter-grid {
    grid-template-columns: 1fr;
  }
}

/* Responsive calculator buttons */
@media (max-width: 768px) {
  .calc-btn {
    padding: 14px;
    font-size: 1rem;
    border-radius: 10px;
  }
  .calc-btn.sc {
    padding: 8px 2px;
    font-size: 0.65rem;
    border-radius: 6px;
  }
  .calc-buttons {
    gap: 5px;
  }
  .calc-display {
    font-size: 1.6rem;
    padding: 16px 18px;
    min-height: 60px;
  }
  .calc-buttons.calc-simple {
    grid-template-columns: repeat(4, 1fr) !important;
  }
  .calc-buttons.calc-sci {
    grid-template-columns: repeat(5, 1fr) !important;
  }
  .calc-buttons.calc-sci .calc-btn.sc {
    font-size: 0.62rem;
    padding: 7px 1px;
  }
}
@media (max-width: 480px) {
  .calc-btn {
    padding: 10px;
    font-size: 0.85rem;
  }
  .calc-btn.sc {
    padding: 6px 1px;
    font-size: 0.55rem;
    border-radius: 5px;
  }
  .calc-buttons {
    gap: 3px;
  }
  .calc-display {
    font-size: 1.3rem;
    padding: 12px 14px;
    min-height: 50px;
  }
}

/* BMI result */
.bmi-result {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  padding: 20px;
}
.bmi-category {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 20px;
  display: inline-block;
  margin: 0 auto;
}
.bmi-category.normal { background: rgba(105, 219, 124, 0.2); color: #69DB7C; }
.bmi-category.underweight { background: rgba(255, 143, 171, 0.2); color: #FF8FAB; }
.bmi-category.overweight { background: rgba(255, 215, 0, 0.2); color: #FFD700; }
.bmi-category.obese { background: rgba(231, 76, 60, 0.2); color: #e74c3c; }

/* Responsive tool options */
.tool-options {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 15px;
  background: var(--input-bg);
  border-radius: 12px;
  margin: 15px 0;
}
.option-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 120px;
}
.option-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}
.option-group select,
.option-group input {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}
.option-group input[type="range"] {
  padding: 0;
}

@media (max-width: 480px) {
  .tool-options {
    flex-direction: column;
    gap: 8px;
  }
  .option-group {
    min-width: auto;
  }
}

/* === HOW TO USE - SEPARATE STEP CARDS === */
.seo-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.seo-step-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  transition: all 0.3s ease;
}

.seo-step-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--shadow);
  border-color: var(--primary);
}

.seo-step-num {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.seo-step-card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}